diff --git a/src/Filee.App/Assets/i18n/ar.json b/src/Filee.App/Assets/i18n/ar.json
index 3de1151e..b5b4fede 100644
--- a/src/Filee.App/Assets/i18n/ar.json
+++ b/src/Filee.App/Assets/i18n/ar.json
@@ -44,6 +44,11 @@
   "home.clear_history": "مسح",
   "home.files": "عدد الملفات: {0}",
   "home.failed_files": "فشل: {0}",
+  "home.undo": "تراجع",
+  "home.undo_hint": "نقل النتائج إلى سلة المحذوفات",
+  "home.undone": "تم التراجع: النتائج في سلة المحذوفات",
+  "home.undone_original": "تم التراجع: النتائج في سلة المحذوفات، وكذلك الملفات الأصلية التي حلّت محلها",
+  "home.undo_failed": "تعذّر نقل {0} إلى سلة المحذوفات: {1}",
   "donut.center_drag": "اسحب الملفات إلى هنا",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "عدد الملفات: {0}",
@@ -119,6 +124,7 @@
   "trash.no_folder": "لا يوجد مجلد لسلة المحذوفات",
   "trash.failed": "تعذّر نقله إلى سلة المحذوفات",
   "trash.cannot_place": "تعذّر حفظ النتيجة في مجلد الأصل",
+  "trash.changed": "تغيّر بعد التحويل",
   "notice.empty_spreadsheet_pages_removed": "تمت إزالة صفحات جدول البيانات الفارغة",
   "notice.ocr_has_text": "كل الصفحات تحتوي على نص بالفعل، لذا نُسخ الملف كما هو",
   "notice.live_photo_pair": "حُفظ كصورة وملف MOV بالاسم نفسه. استوردهما معًا (صور iCloud أو AirDrop أو تطبيق الصور على Mac) لتحصل على Live Photo",
diff --git a/src/Filee.App/Assets/i18n/de.json b/src/Filee.App/Assets/i18n/de.json
index fc742a82..47839db8 100644
--- a/src/Filee.App/Assets/i18n/de.json
+++ b/src/Filee.App/Assets/i18n/de.json
@@ -44,6 +44,11 @@
   "home.clear_history": "Leeren",
   "home.files": "{0} Dateien",
   "home.failed_files": "{0} fehlgeschlagen",
+  "home.undo": "Rückgängig",
+  "home.undo_hint": "Die Ergebnisse in den Papierkorb verschieben",
+  "home.undone": "Rückgängig gemacht: Die Ergebnisse sind im Papierkorb",
+  "home.undone_original": "Rückgängig gemacht: Die Ergebnisse sind im Papierkorb, ebenso die Originale, die sie ersetzt hatten",
+  "home.undo_failed": "{0} konnte nicht in den Papierkorb verschoben werden: {1}",
   "donut.center_drag": "Dateien hierher ziehen",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} Dateien",
@@ -119,6 +124,7 @@
   "trash.no_folder": "es gibt keinen Papierkorbordner",
   "trash.failed": "die Datei konnte nicht in den Papierkorb verschoben werden",
   "trash.cannot_place": "das Ergebnis konnte nicht im Ordner des Originals gespeichert werden",
+  "trash.changed": "die Datei wurde nach der Umwandlung geändert",
   "notice.empty_spreadsheet_pages_removed": "Leere Tabellenseiten wurden entfernt",
   "notice.ocr_has_text": "Alle Seiten enthalten bereits Text. Die Datei wurde unverändert kopiert",
   "notice.live_photo_pair": "Als Foto und MOV-Datei mit gleichem Namen gespeichert. Importiere beide zusammen (über iCloud-Fotos, AirDrop oder Fotos auf einem Mac), um ein Live Photo zu erhalten",
diff --git a/src/Filee.App/Assets/i18n/en.json b/src/Filee.App/Assets/i18n/en.json
index 75d0ee92..7ed76479 100644
--- a/src/Filee.App/Assets/i18n/en.json
+++ b/src/Filee.App/Assets/i18n/en.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Clear",
   "home.files": "{0} files",
   "home.failed_files": "{0} failed",
+  "home.undo": "Undo",
+  "home.undo_hint": "Move the results to the Recycle Bin / Trash",
+  "home.undone": "Undone: the results are in the Recycle Bin / Trash",
+  "home.undone_original": "Undone: the results are in the Recycle Bin / Trash, and so are the originals they replaced",
+  "home.undo_failed": "{0} couldn't be moved to the Recycle Bin / Trash: {1}",
 
   "donut.center_drag": "Bring files here",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "there is no Trash folder",
   "trash.failed": "it couldn't be moved to the Recycle Bin / Trash",
   "trash.cannot_place": "the result couldn't be saved in the original's folder",
+  "trash.changed": "it was changed after the conversion",
   "notice.empty_spreadsheet_pages_removed": "Empty spreadsheet pages were removed",
   "notice.ocr_has_text": "Every page already has text, so it was copied as it is",
   "notice.live_photo_pair": "Saved as a photo and a MOV with the same name. Import both together (iCloud Photos, AirDrop or Photos on a Mac) to get a Live Photo",
diff --git a/src/Filee.App/Assets/i18n/es.json b/src/Filee.App/Assets/i18n/es.json
index c074a17f..b43e1cff 100644
--- a/src/Filee.App/Assets/i18n/es.json
+++ b/src/Filee.App/Assets/i18n/es.json
@@ -44,6 +44,11 @@
   "home.clear_history": "Borrar",
   "home.files": "{0} archivos",
   "home.failed_files": "{0} con error",
+  "home.undo": "Deshacer",
+  "home.undo_hint": "Mover los resultados a la Papelera de reciclaje",
+  "home.undone": "Deshecho: los resultados están en la Papelera de reciclaje",
+  "home.undone_original": "Deshecho: los resultados están en la Papelera de reciclaje, igual que los originales que reemplazaron",
+  "home.undo_failed": "No se pudo mover {0} a la Papelera de reciclaje: {1}",
   "donut.center_drag": "Trae los archivos aquí",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} archivos",
@@ -119,6 +124,7 @@
   "trash.no_folder": "no hay carpeta de Papelera",
   "trash.failed": "no se pudo mover a la Papelera de reciclaje",
   "trash.cannot_place": "no se pudo guardar el resultado en la carpeta del original",
+  "trash.changed": "cambió después de la conversión",
   "notice.empty_spreadsheet_pages_removed": "Se eliminaron las páginas vacías de la hoja de cálculo",
   "notice.ocr_has_text": "Todas las páginas ya tienen texto, así que se copió tal cual",
   "notice.live_photo_pair": "Guardado como una foto y un MOV con el mismo nombre. Impórtalos juntos (Fotos de iCloud, AirDrop o Fotos en un Mac) para obtener una Live Photo",
diff --git a/src/Filee.App/Assets/i18n/fr.json b/src/Filee.App/Assets/i18n/fr.json
index 68101164..38cc052c 100644
--- a/src/Filee.App/Assets/i18n/fr.json
+++ b/src/Filee.App/Assets/i18n/fr.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Effacer",
   "home.files": "{0} fichiers",
   "home.failed_files": "{0} en échec",
+  "home.undo": "Annuler",
+  "home.undo_hint": "Déplacer les résultats dans la Corbeille",
+  "home.undone": "Annulé : les résultats sont dans la Corbeille",
+  "home.undone_original": "Annulé : les résultats sont dans la Corbeille, tout comme les originaux qu'ils avaient remplacés",
+  "home.undo_failed": "Impossible de déplacer {0} dans la Corbeille : {1}",
 
   "donut.center_drag": "Amenez les fichiers ici",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "il n'y a pas de dossier Corbeille",
   "trash.failed": "impossible de le déplacer dans la Corbeille",
   "trash.cannot_place": "impossible d'enregistrer le résultat dans le dossier de l'original",
+  "trash.changed": "il a été modifié après la conversion",
   "notice.empty_spreadsheet_pages_removed": "Les pages vides de la feuille de calcul ont été supprimées",
   "notice.ocr_has_text": "Toutes les pages ont déjà du texte : copié tel quel",
   "notice.live_photo_pair": "Enregistré en une photo et un MOV de même nom. Importez-les ensemble (Photos iCloud, AirDrop ou Photos sur Mac) pour obtenir une Live Photo",
diff --git a/src/Filee.App/Assets/i18n/hi.json b/src/Filee.App/Assets/i18n/hi.json
index 957153f4..c4569867 100644
--- a/src/Filee.App/Assets/i18n/hi.json
+++ b/src/Filee.App/Assets/i18n/hi.json
@@ -44,6 +44,11 @@
   "home.clear_history": "साफ़ करें",
   "home.files": "{0} फ़ाइलें",
   "home.failed_files": "{0} विफल",
+  "home.undo": "पूर्ववत करें",
+  "home.undo_hint": "परिणामों को रीसायकल बिन / ट्रैश में ले जाएँ",
+  "home.undone": "पूर्ववत किया गया: परिणाम रीसायकल बिन / ट्रैश में हैं",
+  "home.undone_original": "पूर्ववत किया गया: परिणाम रीसायकल बिन / ट्रैश में हैं, और जिन मूल फ़ाइलों की जगह उन्होंने ली थी वे भी वहीं हैं",
+  "home.undo_failed": "{0} को रीसायकल बिन / ट्रैश में नहीं ले जाया जा सका: {1}",
   "donut.center_drag": "फ़ाइलें यहाँ लाएँ",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} फ़ाइलें",
@@ -119,6 +124,7 @@
   "trash.no_folder": "ट्रैश फ़ोल्डर नहीं है",
   "trash.failed": "इसे रीसायकल बिन / ट्रैश में नहीं ले जाया जा सका",
   "trash.cannot_place": "परिणाम मूल फ़ाइल के फ़ोल्डर में सेव नहीं हो सका",
+  "trash.changed": "रूपांतरण के बाद इसे बदला गया",
   "notice.empty_spreadsheet_pages_removed": "स्प्रेडशीट के खाली पृष्ठ हटा दिए गए",
   "notice.ocr_has_text": "हर पेज में पहले से टेक्स्ट है, इसलिए फ़ाइल जैसी थी वैसी कॉपी की गई",
   "notice.live_photo_pair": "एक ही नाम की फ़ोटो और MOV के रूप में सहेजा गया। लाइव फ़ोटो पाने के लिए दोनों को साथ में इम्पोर्ट करें (iCloud Photos, AirDrop या Mac पर Photos)",
diff --git a/src/Filee.App/Assets/i18n/ja.json b/src/Filee.App/Assets/i18n/ja.json
index 5dcc03f9..a86f97dc 100644
--- a/src/Filee.App/Assets/i18n/ja.json
+++ b/src/Filee.App/Assets/i18n/ja.json
@@ -44,6 +44,11 @@
   "home.clear_history": "消去",
   "home.files": "{0}個のファイル",
   "home.failed_files": "{0}件失敗",
+  "home.undo": "元に戻す",
+  "home.undo_hint": "結果をごみ箱に移動します",
+  "home.undone": "元に戻しました: 結果はごみ箱にあります",
+  "home.undone_original": "元に戻しました: 結果はごみ箱にあり、置き換えられた元のファイルもごみ箱にあります",
+  "home.undo_failed": "{0} をごみ箱に移動できませんでした: {1}",
   "donut.center_drag": "ここにファイルをドラッグ",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0}ファイル",
@@ -119,6 +124,7 @@
   "trash.no_folder": "ごみ箱フォルダーがありません",
   "trash.failed": "ごみ箱に移動できませんでした",
   "trash.cannot_place": "元のファイルのフォルダーに結果を保存できませんでした",
+  "trash.changed": "変換後に変更されています",
   "notice.empty_spreadsheet_pages_removed": "スプレッドシートの空白ページを削除しました",
   "notice.ocr_has_text": "すべてのページにテキストがあるため、元のままコピーしました",
   "notice.live_photo_pair": "同じ名前の写真とMOVとして保存しました。両方を一緒に取り込むと（iCloud写真、AirDrop、Macの写真アプリ）Live Photoになります",
diff --git a/src/Filee.App/Assets/i18n/ko.json b/src/Filee.App/Assets/i18n/ko.json
index 5e899b54..3ab3e257 100644
--- a/src/Filee.App/Assets/i18n/ko.json
+++ b/src/Filee.App/Assets/i18n/ko.json
@@ -47,6 +47,11 @@
   "home.clear_history": "지우기",
   "home.files": "파일 {0}개",
   "home.failed_files": "{0}개 실패",
+  "home.undo": "되돌리기",
+  "home.undo_hint": "결과를 휴지통으로 옮겨요",
+  "home.undone": "되돌렸어요: 결과는 휴지통에 있어요",
+  "home.undone_original": "되돌렸어요: 결과는 휴지통에 있고, 결과가 대신했던 원본도 휴지통에 있어요",
+  "home.undo_failed": "{0}을(를) 휴지통으로 옮기지 못했어요: {1}",
 
   "donut.center_drag": "파일을 이쪽으로",
   "donut.files_same": "{1} {0}개",
@@ -125,6 +130,7 @@
   "trash.no_folder": "휴지통 폴더가 없어요",
   "trash.failed": "휴지통으로 옮기지 못했어요",
   "trash.cannot_place": "원본 폴더에 결과를 저장하지 못했어요",
+  "trash.changed": "변환한 뒤에 바뀌었어요",
   "notice.empty_spreadsheet_pages_removed": "스프레드시트의 빈 페이지를 제거했어요",
   "notice.ocr_has_text": "모든 페이지에 이미 텍스트가 있어서 그대로 복사했어요",
   "notice.live_photo_pair": "같은 이름의 사진과 MOV로 저장했어요. 두 파일을 함께 가져오면(iCloud 사진, AirDrop, Mac의 사진 앱) 라이브 포토가 돼요",
diff --git a/src/Filee.App/Assets/i18n/ne.json b/src/Filee.App/Assets/i18n/ne.json
index a9a85890..8b9d011a 100644
--- a/src/Filee.App/Assets/i18n/ne.json
+++ b/src/Filee.App/Assets/i18n/ne.json
@@ -44,6 +44,11 @@
   "home.clear_history": "खाली गर्नुहोस्",
   "home.files": "{0} फाइलहरू",
   "home.failed_files": "{0} असफल",
+  "home.undo": "पूर्ववत गर्नुहोस्",
+  "home.undo_hint": "नतिजाहरूलाई रिसाइकल बिन / ट्र्यासमा सार्नुहोस्",
+  "home.undone": "पूर्ववत गरियो: नतिजाहरू रिसाइकल बिन / ट्र्यासमा छन्",
+  "home.undone_original": "पूर्ववत गरियो: नतिजाहरू रिसाइकल बिन / ट्र्यासमा छन्, र तिनले बदलेका मूल फाइलहरू पनि त्यहीँ छन्",
+  "home.undo_failed": "{0} लाई रिसाइकल बिन / ट्र्यासमा सार्न सकिएन: {1}",
   "donut.center_drag": "फाइलहरू यहाँ ल्याउनुहोस्",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} फाइलहरू",
@@ -119,6 +124,7 @@
   "trash.no_folder": "ट्र्यास फोल्डर छैन",
   "trash.failed": "यसलाई रिसाइकल बिन / ट्र्यासमा सार्न सकिएन",
   "trash.cannot_place": "नतिजा मूल फाइलको फोल्डरमा सेभ गर्न सकिएन",
+  "trash.changed": "रूपान्तरणपछि यसलाई परिवर्तन गरिएको छ",
   "notice.ocr_has_text": "हरेक पृष्ठमा पहिले नै पाठ छ, त्यसैले जस्तो छ त्यस्तै प्रतिलिपि गरियो",
   "notice.empty_spreadsheet_pages_removed": "स्प्रेडसिटका खाली पृष्ठहरू हटाइए",
   "notice.live_photo_pair": "एउटै नामको फोटो र MOV का रूपमा सुरक्षित गरियो। लाइभ फोटो पाउन दुवैलाई सँगै आयात गर्नुहोस् (iCloud Photos, AirDrop वा Mac मा Photos)",
diff --git a/src/Filee.App/Assets/i18n/pl.json b/src/Filee.App/Assets/i18n/pl.json
index 72f4aa02..8aa702f2 100644
--- a/src/Filee.App/Assets/i18n/pl.json
+++ b/src/Filee.App/Assets/i18n/pl.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Wyczyść",
   "home.files": "Pliki: {0}",
   "home.failed_files": "Błędy: {0}",
+  "home.undo": "Cofnij",
+  "home.undo_hint": "Przenieś wyniki do Kosza",
+  "home.undone": "Cofnięto: wyniki są w Koszu",
+  "home.undone_original": "Cofnięto: wyniki są w Koszu, tak jak oryginały, które zastąpiły",
+  "home.undo_failed": "Nie udało się przenieść {0} do Kosza: {1}",
 
   "donut.center_drag": "Przenieś pliki tutaj",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "nie ma folderu Kosza",
   "trash.failed": "nie udało się przenieść go do Kosza",
   "trash.cannot_place": "nie udało się zapisać wyniku w folderze oryginału",
+  "trash.changed": "zmieniono go po konwersji",
   "notice.empty_spreadsheet_pages_removed": "Usunięto puste strony arkusza kalkulacyjnego",
   "notice.ocr_has_text": "Każda strona ma już tekst, więc skopiowano bez zmian",
   "notice.live_photo_pair": "Zapisano jako zdjęcie i plik MOV o tej samej nazwie. Zaimportuj je razem (Zdjęcia iCloud, AirDrop lub Zdjęcia na Macu), aby otrzymać Live Photo",
diff --git a/src/Filee.App/Assets/i18n/pt-BR.json b/src/Filee.App/Assets/i18n/pt-BR.json
index 75099813..b15db430 100644
--- a/src/Filee.App/Assets/i18n/pt-BR.json
+++ b/src/Filee.App/Assets/i18n/pt-BR.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Limpar",
   "home.files": "{0} arquivos",
   "home.failed_files": "{0} falharam",
+  "home.undo": "Desfazer",
+  "home.undo_hint": "Mover os resultados para a Lixeira",
+  "home.undone": "Desfeito: os resultados estão na Lixeira",
+  "home.undone_original": "Desfeito: os resultados estão na Lixeira, assim como os originais que eles substituíram",
+  "home.undo_failed": "Não foi possível mover {0} para a Lixeira: {1}",
 
   "donut.center_drag": "Traga os arquivos para cá",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "não há pasta de Lixeira",
   "trash.failed": "não foi possível movê-lo para a Lixeira",
   "trash.cannot_place": "não foi possível salvar o resultado na pasta do original",
+  "trash.changed": "ele foi alterado depois da conversão",
   "notice.empty_spreadsheet_pages_removed": "As páginas vazias da planilha foram removidas",
   "notice.ocr_has_text": "Todas as páginas já têm texto, então foi copiado como está",
   "notice.live_photo_pair": "Salvo como uma foto e um MOV com o mesmo nome. Importe os dois juntos (Fotos do iCloud, AirDrop ou Fotos no Mac) para obter uma Live Photo",
diff --git a/src/Filee.App/Assets/i18n/pt-PT.json b/src/Filee.App/Assets/i18n/pt-PT.json
index e6ca7c15..e67c02ea 100644
--- a/src/Filee.App/Assets/i18n/pt-PT.json
+++ b/src/Filee.App/Assets/i18n/pt-PT.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Limpar",
   "home.files": "{0} ficheiros",
   "home.failed_files": "Falhas: {0}",
+  "home.undo": "Anular",
+  "home.undo_hint": "Mover os resultados para a Reciclagem ou para o Lixo",
+  "home.undone": "Anulado: os resultados estão na Reciclagem ou no Lixo",
+  "home.undone_original": "Anulado: os resultados estão na Reciclagem ou no Lixo, tal como os originais que substituíram",
+  "home.undo_failed": "Não foi possível mover {0} para a Reciclagem ou para o Lixo: {1}",
 
   "donut.center_drag": "Arrasta ficheiros para aqui",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "não existe uma pasta de Lixo",
   "trash.failed": "não foi possível movê-lo para a Reciclagem ou para o Lixo",
   "trash.cannot_place": "não foi possível guardar o resultado na pasta do original",
+  "trash.changed": "foi alterado depois da conversão",
   "notice.empty_spreadsheet_pages_removed": "Foram removidas as páginas vazias das folhas de cálculo",
   "notice.ocr_has_text": "Todas as páginas já têm texto, pelo que o ficheiro foi copiado sem alterações",
   "notice.live_photo_pair": "Foi guardada uma fotografia e um MOV com o mesmo nome. Importa ambos em conjunto (Fotografias em iCloud, AirDrop ou Fotografias num Mac) para obteres uma Live Photo",
diff --git a/src/Filee.App/Assets/i18n/ru.json b/src/Filee.App/Assets/i18n/ru.json
index 29acdd1e..45dd75dd 100644
--- a/src/Filee.App/Assets/i18n/ru.json
+++ b/src/Filee.App/Assets/i18n/ru.json
@@ -47,6 +47,11 @@
   "home.clear_history": "Очистить",
   "home.files": "Файлов: {0}",
   "home.failed_files": "Ошибок: {0}",
+  "home.undo": "Отменить",
+  "home.undo_hint": "Переместить результаты в Корзину",
+  "home.undone": "Отменено: результаты в Корзине",
+  "home.undone_original": "Отменено: результаты в Корзине, как и оригиналы, которые они заменили",
+  "home.undo_failed": "Не удалось переместить {0} в Корзину: {1}",
 
   "donut.center_drag": "Перетащите сюда",
   "donut.files_same": "{0} × {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "нет папки Корзины",
   "trash.failed": "не удалось переместить его в Корзину",
   "trash.cannot_place": "не удалось сохранить результат в папке оригинала",
+  "trash.changed": "он изменился после преобразования",
   "notice.empty_spreadsheet_pages_removed": "Пустые страницы таблицы удалены",
   "notice.ocr_has_text": "На всех страницах уже есть текст, поэтому файл скопирован как есть",
   "notice.live_photo_pair": "Сохранено как фото и MOV с одинаковым именем. Импортируйте их вместе (Фото iCloud, AirDrop или «Фото» на Mac), чтобы получить Live Photo",
diff --git a/src/Filee.App/Assets/i18n/th.json b/src/Filee.App/Assets/i18n/th.json
index 8c419e6b..d6d11bc7 100644
--- a/src/Filee.App/Assets/i18n/th.json
+++ b/src/Filee.App/Assets/i18n/th.json
@@ -44,6 +44,11 @@
   "home.clear_history": "ล้างประวัติ",
   "home.files": "{0} ไฟล์",
   "home.failed_files": "ล้มเหลว {0} ไฟล์",
+  "home.undo": "เลิกทำ",
+  "home.undo_hint": "ย้ายผลลัพธ์ไปที่ถังรีไซเคิล / ถังขยะ",
+  "home.undone": "เลิกทำแล้ว: ผลลัพธ์อยู่ในถังรีไซเคิล / ถังขยะ",
+  "home.undone_original": "เลิกทำแล้ว: ผลลัพธ์อยู่ในถังรีไซเคิล / ถังขยะ และต้นฉบับที่ถูกแทนที่ก็อยู่ที่นั่นด้วย",
+  "home.undo_failed": "ย้าย {0} ไปที่ถังรีไซเคิล / ถังขยะไม่ได้: {1}",
   "donut.center_drag": "ลากไฟล์มาที่นี่",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} ไฟล์",
@@ -119,6 +124,7 @@
   "trash.no_folder": "ไม่มีโฟลเดอร์ถังขยะ",
   "trash.failed": "ย้ายไปที่ถังรีไซเคิล / ถังขยะไม่ได้",
   "trash.cannot_place": "บันทึกผลลัพธ์ในโฟลเดอร์ของไฟล์ต้นฉบับไม่ได้",
+  "trash.changed": "ไฟล์ถูกแก้ไขหลังการแปลง",
   "notice.ocr_has_text": "ทุกหน้ามีข้อความอยู่แล้ว จึงคัดลอกไฟล์ตามเดิม",
   "notice.empty_spreadsheet_pages_removed": "ลบหน้าว่างของสเปรดชีตออกแล้ว",
   "notice.live_photo_pair": "บันทึกเป็นรูปภาพและไฟล์ MOV ที่มีชื่อเดียวกัน นำเข้าทั้งสองไฟล์พร้อมกัน (ผ่านรูปภาพ iCloud, AirDrop หรือ Photos บน Mac) เพื่อใช้งานเป็น Live Photo",
diff --git a/src/Filee.App/Assets/i18n/tr.json b/src/Filee.App/Assets/i18n/tr.json
index 62a8e5e1..87babf8f 100644
--- a/src/Filee.App/Assets/i18n/tr.json
+++ b/src/Filee.App/Assets/i18n/tr.json
@@ -44,6 +44,11 @@
   "home.clear_history": "Temizle",
   "home.files": "{0} dosya",
   "home.failed_files": "{0} başarısız",
+  "home.undo": "Geri al",
+  "home.undo_hint": "Sonuçları Geri Dönüşüm Kutusu'na / Çöp Sepeti'ne taşı",
+  "home.undone": "Geri alındı: sonuçlar Geri Dönüşüm Kutusu'nda / Çöp Sepeti'nde",
+  "home.undone_original": "Geri alındı: sonuçlar ve yerini aldıkları orijinaller Geri Dönüşüm Kutusu'nda / Çöp Sepeti'nde",
+  "home.undo_failed": "{0} Geri Dönüşüm Kutusu'na / Çöp Sepeti'ne taşınamadı: {1}",
   "donut.center_drag": "Dosyaları buraya getirin",
   "donut.files_same": "{0} × {1}",
   "donut.files_mixed": "{0} dosya",
@@ -119,6 +124,7 @@
   "trash.no_folder": "Çöp Sepeti klasörü yok",
   "trash.failed": "Geri Dönüşüm Kutusu'na / Çöp Sepeti'ne taşınamadı",
   "trash.cannot_place": "sonuç özgün dosyanın klasörüne kaydedilemedi",
+  "trash.changed": "dönüştürmeden sonra değiştirildi",
   "notice.empty_spreadsheet_pages_removed": "Elektronik tablodaki boş sayfalar kaldırıldı",
   "notice.ocr_has_text": "Her sayfada zaten metin olduğu için dosya olduğu gibi kopyalandı",
   "notice.live_photo_pair": "Aynı adlı fotoğraf ve MOV dosyası olarak kaydedildi. Live Photo elde etmek için ikisini birlikte içe aktarın (iCloud Fotoğrafları, AirDrop veya Mac'teki Fotoğraflar ile)",
diff --git a/src/Filee.App/Assets/i18n/zh-CN.json b/src/Filee.App/Assets/i18n/zh-CN.json
index 340de83b..4ff4f9ac 100644
--- a/src/Filee.App/Assets/i18n/zh-CN.json
+++ b/src/Filee.App/Assets/i18n/zh-CN.json
@@ -47,6 +47,11 @@
   "home.clear_history": "清除",
   "home.files": "{0} 个文件",
   "home.failed_files": "{0} 个失败",
+  "home.undo": "撤销",
+  "home.undo_hint": "将结果移到回收站/废纸篓",
+  "home.undone": "已撤销：结果已在回收站/废纸篓中",
+  "home.undone_original": "已撤销：结果已在回收站/废纸篓中，被替换的原文件也在那里",
+  "home.undo_failed": "无法将 {0} 移到回收站/废纸篓：{1}",
 
   "donut.center_drag": "把文件拖到这里",
   "donut.files_same": "{0} 个 {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "没有废纸篓文件夹",
   "trash.failed": "无法移到回收站/废纸篓",
   "trash.cannot_place": "无法将结果保存到原文件所在的文件夹",
+  "trash.changed": "转换后它被修改过",
   "notice.empty_spreadsheet_pages_removed": "已移除电子表格中的空白页面",
   "notice.ocr_has_text": "每页都已有文字，已原样复制",
   "notice.live_photo_pair": "已保存为同名的照片和 MOV。将两者一起导入（iCloud 照片、隔空投送或 Mac 上的“照片”）即可得到实况照片",
diff --git a/src/Filee.App/Assets/i18n/zh-TW.json b/src/Filee.App/Assets/i18n/zh-TW.json
index ee508a74..d9f1c979 100644
--- a/src/Filee.App/Assets/i18n/zh-TW.json
+++ b/src/Filee.App/Assets/i18n/zh-TW.json
@@ -47,6 +47,11 @@
   "home.clear_history": "清除",
   "home.files": "{0} 個檔案",
   "home.failed_files": "{0} 個失敗",
+  "home.undo": "復原",
+  "home.undo_hint": "將結果移到資源回收筒/垃圾桶",
+  "home.undone": "已復原：結果已在資源回收筒/垃圾桶中",
+  "home.undone_original": "已復原：結果已在資源回收筒/垃圾桶中，被取代的原始檔也在那裡",
+  "home.undo_failed": "無法將 {0} 移到資源回收筒/垃圾桶：{1}",
 
   "donut.center_drag": "把檔案拖到這裡",
   "donut.files_same": "{0} 個 {1}",
@@ -125,6 +130,7 @@
   "trash.no_folder": "沒有垃圾桶資料夾",
   "trash.failed": "無法移到資源回收筒/垃圾桶",
   "trash.cannot_place": "無法將結果儲存到原始檔案所在的資料夾",
+  "trash.changed": "轉換後已被修改",
   "notice.empty_spreadsheet_pages_removed": "已移除試算表中的空白頁面",
   "notice.ocr_has_text": "每頁都已有文字，已原樣複製",
   "notice.live_photo_pair": "已儲存為同名的照片和 MOV。將兩者一起匯入（iCloud 照片、隔空投送或 Mac 上的「照片」）即可得到原況照片",
diff --git a/src/Filee.App/Styles/Icons.axaml b/src/Filee.App/Styles/Icons.axaml
index 21ca4ad7..c8c0588b 100644
--- a/src/Filee.App/Styles/Icons.axaml
+++ b/src/Filee.App/Styles/Icons.axaml
@@ -33,6 +33,7 @@
   <StreamGeometry x:Key="Icon.GitHub">M12,2A10,10 0 0,0 2,12C2,16.42 4.87,20.17 8.84,21.5C9.34,21.58 9.5,21.27 9.5,21C9.5,20.77 9.5,20.14 9.5,19.31C6.73,19.91 6.14,17.97 6.14,17.97C5.68,16.81 5.03,16.5 5.03,16.5C4.12,15.88 5.1,15.9 5.1,15.9C6.1,15.97 6.63,16.93 6.63,16.93C7.5,18.45 8.97,18 9.54,17.76C9.63,17.11 9.89,16.67 10.17,16.42C7.95,16.17 5.62,15.31 5.62,11.5C5.62,10.39 6,9.5 6.65,8.79C6.55,8.54 6.2,7.5 6.75,6.15C6.75,6.15 7.59,5.88 9.5,7.17C10.29,6.95 11.15,6.84 12,6.84C12.85,6.84 13.71,6.95 14.5,7.17C16.41,5.88 17.25,6.15 17.25,6.15C17.8,7.5 17.45,8.54 17.35,8.79C18,9.5 18.38,10.39 18.38,11.5C18.38,15.32 16.04,16.16 13.81,16.41C14.17,16.72 14.5,17.33 14.5,18.26C14.5,19.6 14.5,20.68 14.5,21C14.5,21.27 14.66,21.59 15.17,21.5C19.14,20.16 22,16.42 22,12A10,10 0 0,0 12,2Z</StreamGeometry>
   <StreamGeometry x:Key="Icon.Heart">M12,21.35L10.55,20.03C5.4,15.36 2,12.27 2,8.5C2,5.41 4.42,3 7.5,3C9.24,3 10.91,3.81 12,5.08C13.09,3.81 14.76,3 16.5,3C19.58,3 22,5.41 22,8.5C22,12.27 18.6,15.36 13.45,20.03L12,21.35Z</StreamGeometry>
   <StreamGeometry x:Key="Icon.Refresh">M17.65,6.35C16.2,4.9 14.21,4 12,4A8,8 0 0,0 4,12A8,8 0 0,0 12,20C15.73,20 18.84,17.45 19.73,14H17.65C16.83,16.33 14.61,18 12,18A6,6 0 0,1 6,12A6,6 0 0,1 12,6C13.66,6 15.14,6.69 16.22,7.78L13,11H20V4L17.65,6.35Z</StreamGeometry>
+  <StreamGeometry x:Key="Icon.Undo">M12.5,8C9.85,8 7.45,9 5.6,10.6L2,7V16H11L7.38,12.38C8.77,11.22 10.54,10.5 12.5,10.5C16.04,10.5 19.05,12.81 20.1,16L22.47,15.22C21.08,11.03 17.15,8 12.5,8Z</StreamGeometry>
   <StreamGeometry x:Key="Icon.Record">M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M12,7A5,5 0 0,1 17,12A5,5 0 0,1 12,17A5,5 0 0,1 7,12A5,5 0 0,1 12,7Z</StreamGeometry>
   <StreamGeometry x:Key="Icon.Crop">M7,17V1H5V5H1V7H5V17A2,2 0 0,0 7,19H17V23H19V19H23V17M17,15H19V7C19,5.89 18.1,5 17,5H9V7H17V15Z</StreamGeometry>
   <StreamGeometry x:Key="Icon.Cut">M9.64,7.64C9.87,7.14 10,6.59 10,6A4,4 0 0,0 6,2A4,4 0 0,0 2,6A4,4 0 0,0 6,10C6.59,10 7.14,9.87 7.64,9.64L10,12L7.64,14.36C7.14,14.13 6.59,14 6,14A4,4 0 0,0 2,18A4,4 0 0,0 6,22A4,4 0 0,0 10,18C10,17.41 9.87,16.86 9.64,16.36L12,14L19,21H22V20L9.64,7.64M6,8A2,2 0 0,1 4,6A2,2 0 0,1 6,4A2,2 0 0,1 8,6A2,2 0 0,1 6,8M6,20A2,2 0 0,1 4,18A2,2 0 0,1 6,16A2,2 0 0,1 8,18A2,2 0 0,1 6,20M19,3L13,9L15,11L22,4V3H19Z</StreamGeometry>
diff --git a/src/Filee.App/ViewModels/Pages/HomePageViewModel.cs b/src/Filee.App/ViewModels/Pages/HomePageViewModel.cs
index 447facf1..663c6bfd 100644
--- a/src/Filee.App/ViewModels/Pages/HomePageViewModel.cs
+++ b/src/Filee.App/ViewModels/Pages/HomePageViewModel.cs
@@ -18,17 +18,22 @@ namespace Filee.App.ViewModels.Pages;
 public sealed partial class HistoryItemViewModel : ObservableObject
 {
     private readonly HistoryEntry _entry;
+    private readonly ILocalizer _loc;
     private readonly IPlatformServices _platform;
     private readonly ConversionService? _conversions;
+    private readonly UserDataStore? _store;
 
     /// <summary>The first output still on disk (the one the buttons open), or null.</summary>
     private readonly string? _output;
 
-    public HistoryItemViewModel(HistoryEntry entry, ILocalizer loc, IPlatformServices platform, ConversionService? conversions = null)
+    public HistoryItemViewModel(HistoryEntry entry, ILocalizer loc, IPlatformServices platform, ConversionService? conversions = null,
+        UserDataStore? store = null)
     {
         _entry = entry;
+        _loc = loc;
         _platform = platform;
         _conversions = conversions;
+        _store = store;
         Title = entry.PresetName;
         Subtitle = entry.Sources.Count == 1 ? Path.GetFileName(entry.Sources[0]) : loc.Format("home.files", entry.Sources.Count);
         Time = entry.FinishedAt.Date == DateTime.Today ? entry.FinishedAt.ToString("t") : entry.FinishedAt.ToString("d");
@@ -52,8 +57,17 @@ public HistoryItemViewModel(HistoryEntry entry, ILocalizer loc, IPlatformService
         ThumbnailSource = picture is not null && HistoryThumbnails.CanShow(picture) ? picture : null;
         // Only entries that remember their preset (Filee 1.8 and later) and still have a failed file to convert.
         CanRetry = conversions is not null && entry.Preset is not null && entry.Failures.Any(f => ConversionService.Exists(f.Source));
+        CanUndo = store is not null && UndoLeft();
+        UndoneText = entry.Undone ? loc[entry.OriginalsInTrash ? "home.undone_original" : "home.undone"] : "";
     }
 
+    /// <summary>
+    /// Undo (#553) is offered while the results not moved yet are all as the job left them, so a file changed since is
+    /// never moved; after an Undo that stopped half-way, for the ones it didn't get to.
+    /// </summary>
+    private bool UndoLeft() =>
+        !_entry.Undone && _entry.Undoable.Where(o => !o.Trashed).ToList() is { Count: > 0 } left && left.All(o => o.Unchanged());
+
     public string Title { get; }
     public string Subtitle { get; }
     public string Time { get; }
@@ -101,6 +115,62 @@ private void Retry()
             _conversions.Retry(_entry.Failures.Select(f => f.Source), _entry.Preset, _entry.WatchRuleId);
     }
 
+    [ObservableProperty] private bool _canUndo;
+
+    /// <summary>"Undone: the results are in the Recycle Bin / Trash", or empty.</summary>
+    public string UndoneText { get; }
+
+    public bool IsUndone => UndoneText.Length > 0;
+
+    /// <summary>Why a result couldn't be moved to the Recycle Bin / Trash, or empty.</summary>
+    [ObservableProperty, NotifyPropertyChangedFor(nameof(HasUndoError))] private string _undoError = "";
+
+    public bool HasUndoError => UndoError.Length > 0;
+
+    /// <summary>
+    /// Moves the job's results to the Recycle Bin / Trash, off the UI thread (Windows' Recycle Bin takes a moment per
+    /// file); the button is disabled meanwhile. Every result is checked first, so a changed one stops it with nothing
+    /// moved. Each result moved is saved as such, so an Undo the Trash stops half-way can be tried again for the rest.
+    /// "Replace the original" sent the originals there already: they stay, and the card says so.
+    /// </summary>
+    [RelayCommand]
+    private async Task UndoAsync()
+    {
+        if (!CanUndo || _store is null)
+            return;
+        UndoError = "";
+        var left = _entry.Undoable.Where(o => !o.Trashed).ToList();
+        if (left.FirstOrDefault(o => !o.Unchanged()) is { } changed)
+        {
+            Refused(changed, new TrashRefusal("trash.changed"));
+            return;
+        }
+        var refused = await Task.Run(() =>
+        {
+            foreach (var output in left)
+            {
+                if (_platform.MoveToTrash(output.Path) is { } refusal)
+                    return (output, refusal);
+                output.Trashed = true;
+            }
+            return default((HistoryOutput, TrashRefusal)?);
+        });
+        if (refused is { } stop)
+        {
+            _store.SaveHistory(notify: false); // the moved ones stay moved; this card says why it stopped
+            Refused(stop.Item1, stop.Item2);
+            return;
+        }
+        _entry.Undone = true;
+        _store.SaveHistory();
+    }
+
+    private void Refused(HistoryOutput output, TrashRefusal refusal)
+    {
+        UndoError = _loc.Format("home.undo_failed", Path.GetFileName(output.Path), _loc[refusal.ReasonKey]);
+        CanUndo = UndoLeft();
+    }
+
     [RelayCommand]
     private void OpenFolder()
     {
@@ -223,7 +293,7 @@ private void Reload()
             .ToList();
         History.Clear();
         foreach (var entry in entries)
-            History.Add(new HistoryItemViewModel(entry, _loc, _platform, _conversions));
+            History.Add(new HistoryItemViewModel(entry, _loc, _platform, _conversions, _store));
         IsEmpty = _store.History.Count == 0;
         NoMatches = !IsEmpty && History.Count == 0;
         LoadThumbnails();
diff --git a/src/Filee.App/Views/Pages/HomePage.axaml b/src/Filee.App/Views/Pages/HomePage.axaml
index a83a3d28..aae555da 100644
--- a/src/Filee.App/Views/Pages/HomePage.axaml
+++ b/src/Filee.App/Views/Pages/HomePage.axaml
@@ -113,6 +113,13 @@
                         <TextBlock Text="{DynamicResource home.open_folder}" />
                       </StackPanel>
                     </Button>
+                    <!-- Only while every result is as the job left it: they go to the Recycle Bin / Trash. -->
+                    <Button Command="{Binding UndoCommand}" IsVisible="{Binding CanUndo}" Padding="10,5" ToolTip.Tip="{DynamicResource home.undo_hint}">
+                      <StackPanel Orientation="Horizontal" Spacing="6">
+                        <PathIcon Width="13" Height="13" Data="{StaticResource Icon.Undo}" />
+                        <TextBlock Text="{DynamicResource home.undo}" />
+                      </StackPanel>
+                    </Button>
                   </StackPanel>
                   <!-- The result: its picture, else its format; the corner says whether the job went well. -->
                   <Panel DockPanel.Dock="Left" Width="42" Height="42" Margin="0,0,12,0">
@@ -156,6 +163,9 @@
                   </StackPanel>
                 </DockPanel>
 
+                <TextBlock Classes="caption" Margin="54,0,0,0" TextWrapping="Wrap" Text="{Binding UndoneText}" IsVisible="{Binding IsUndone}" />
+                <TextBlock Classes="caption danger" Margin="54,0,0,0" TextWrapping="Wrap" Text="{Binding UndoError}" IsVisible="{Binding HasUndoError}" />
+
                 <!-- Failed files: the list on demand, and converting them again -->
                 <DockPanel IsVisible="{Binding HasFailures}" Margin="54,0,0,0">
                   <Button DockPanel.Dock="Right" Command="{Binding RetryCommand}" IsVisible="{Binding CanRetry}" Padding="10,5">
diff --git a/src/Filee.Core/Conversion/ConversionJob.cs b/src/Filee.Core/Conversion/ConversionJob.cs
index 205ef0f5..e1d4c91f 100644
--- a/src/Filee.Core/Conversion/ConversionJob.cs
+++ b/src/Filee.Core/Conversion/ConversionJob.cs
@@ -63,6 +63,9 @@ public sealed class FileResult
     /// <summary>The system's own words after <see cref="NoticeReasonKey"/> (not localized), or null.</summary>
     public string? NoticeDetail { get; set; }
 
+    /// <summary>"Replace the original" sent the source to the Recycle Bin / Trash (its path may now hold the result).</summary>
+    public bool OriginalInTrash { get; set; }
+
     /// <summary>
     /// Referenced document font families that weren't installed before rendering. Conversion still completes with the
     /// renderer's substitutions; the UI can offer trusted sources afterwards.
diff --git a/src/Filee.Core/Conversion/JobQueue.cs b/src/Filee.Core/Conversion/JobQueue.cs
index 70bb2bbf..5d3994aa 100644
--- a/src/Filee.Core/Conversion/JobQueue.cs
+++ b/src/Filee.Core/Conversion/JobQueue.cs
@@ -1078,7 +1078,9 @@ private string ReplaceOriginal(ConversionJob job, FileResult file, string source
             return Kept(new Platform.TrashRefusal("trash.cannot_place", ex.Message), output);
         }
 
-        if (_moveToTrash(source) is { } refusal)
+        var refusal = _moveToTrash(source);
+        file.OriginalInTrash = refusal is null;
+        if (refusal is not null)
         {
             // The result goes back to where it was saved.
             try
diff --git a/src/Filee.Core/History/HistoryEntry.cs b/src/Filee.Core/History/HistoryEntry.cs
index e9bca316..5a606c2e 100644
--- a/src/Filee.Core/History/HistoryEntry.cs
+++ b/src/Filee.Core/History/HistoryEntry.cs
@@ -32,6 +32,18 @@ public sealed class HistoryEntry
     /// <summary>"file: error" lines written by Filee 1.7 and earlier; read for entries without <see cref="Failures"/>.</summary>
     public List<string> Errors { get; set; } = [];
 
+    /// <summary>
+    /// The results Undo sends to the Recycle Bin / Trash, as they were when the job finished: Undo is offered only while
+    /// each one is still there unchanged (#553). Empty when there is nothing to undo, and in entries from before Undo.
+    /// </summary>
+    public List<HistoryOutput> Undoable { get; set; } = [];
+
+    /// <summary>"Replace the original" sent a source to the Recycle Bin / Trash; Undo says it is still there.</summary>
+    public bool OriginalsInTrash { get; set; }
+
+    /// <summary>Undo moved the results to the Recycle Bin / Trash.</summary>
+    public bool Undone { get; set; }
+
     public static HistoryEntry From(ConversionJob job)
     {
         var failures = job.Files
@@ -50,8 +62,61 @@ public static HistoryEntry From(ConversionJob job)
             Failures = failures,
             // history.json isn't the place for a PDF password: a retry takes it from the preset again.
             Preset = failures.Count > 0 ? job.Preset.Clone().WithoutPassword(mark: true) : null,
+            Undoable = UndoableOutputs(job),
+            OriginalsInTrash = job.Files.Any(f => f.OriginalInTrash),
         };
     }
+
+    /// <summary>
+    /// More results than this ("Save every frame", a long PDF split into pages) get no Undo, so history.json stays
+    /// small and an Undo never takes minutes.
+    /// </summary>
+    public const int MaxUndoable = 500;
+
+    private static List<HistoryOutput> UndoableOutputs(ConversionJob job)
+    {
+        var outputs = new List<HistoryOutput>();
+        var seen = new HashSet<string>(OperatingSystem.IsWindows() ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal);
+        foreach (var file in job.Files)
+        {
+            foreach (var output in file.Outputs)
+            {
+                // A source left as it was ("Only if smaller" with "Replace the original") is the user's file, not a result.
+                if (!file.OriginalInTrash && string.Equals(Path.GetFullPath(output), Path.GetFullPath(file.SourcePath), Platform.FileSystemPaths.Comparison))
+                    continue;
+                // An output folder (Extract), or a document whose pictures Pandoc wrote into "<name>_files" beside it
+                // (not one of the outputs): Undo only moves files, so the whole job gets none rather than half of it.
+                if (!File.Exists(output)
+                    || Directory.Exists(Path.Combine(Path.GetDirectoryName(output)!, Path.GetFileNameWithoutExtension(output) + "_files")))
+                    return [];
+                if (!seen.Add(output))
+                    continue;
+                if (outputs.Count == MaxUndoable)
+                    return [];
+                var info = new FileInfo(output);
+                outputs.Add(new HistoryOutput { Path = output, Length = info.Length, WrittenUtc = info.LastWriteTimeUtc });
+            }
+        }
+        return outputs;
+    }
+}
+
+/// <summary>A result as the job left it, so Undo never moves a file that was changed or replaced since.</summary>
+public sealed class HistoryOutput
+{
+    public string Path { get; set; } = "";
+    public long Length { get; set; }
+    public DateTime WrittenUtc { get; set; }
+
+    /// <summary>Undo moved it to the Recycle Bin / Trash, also when a later result was refused there.</summary>
+    public bool Trashed { get; set; }
+
+    /// <summary>Still there, the same size and last written at the same time.</summary>
+    public bool Unchanged()
+    {
+        var info = new FileInfo(Path);
+        return info.Exists && info.Length == Length && info.LastWriteTimeUtc == WrittenUtc;
+    }
 }
 
 /// <summary>A file a job couldn't convert.</summary>
diff --git a/src/Filee.Core/Settings/UserDataStore.cs b/src/Filee.Core/Settings/UserDataStore.cs
index 10a8c0a9..654fb8c6 100644
--- a/src/Filee.Core/Settings/UserDataStore.cs
+++ b/src/Filee.Core/Settings/UserDataStore.cs
@@ -58,7 +58,7 @@ public UserDataStore(string directory, ILogger<UserDataStore>? log = null)
     /// <summary>Raised after presets or profiles were saved.</summary>
     public event EventHandler? LibraryChanged;
 
-    /// <summary>Raised after a history entry was added.</summary>
+    /// <summary>Raised after a history entry was added or changed, or the history cleared.</summary>
     public event EventHandler? HistoryChanged;
 
     private string SettingsPath => Path.Combine(Directory, "settings.json");
@@ -131,6 +131,17 @@ public void AddHistory(HistoryEntry entry)
         HistoryChanged?.Invoke(this, EventArgs.Empty);
     }
 
+    /// <summary>
+    /// Saves a change to an entry already in <see cref="History"/> (Undo marks results moved, and the entry undone).
+    /// <paramref name="notify"/> false leaves the list as it is shown, so the card can say why it stopped.
+    /// </summary>
+    public void SaveHistory(bool notify = true)
+    {
+        Write(HistoryPath, History, FileeJsonContext.Default.ListHistoryEntry);
+        if (notify)
+            HistoryChanged?.Invoke(this, EventArgs.Empty);
+    }
+
     public void ClearHistory()
     {
         lock (_saveLock)
diff --git a/tests/Filee.App.Tests/RecentConversionTests.cs b/tests/Filee.App.Tests/RecentConversionTests.cs
index 391e577b..5b5f7292 100644
--- a/tests/Filee.App.Tests/RecentConversionTests.cs
+++ b/tests/Filee.App.Tests/RecentConversionTests.cs
@@ -1,5 +1,5 @@
 // The Home page's recent conversions: thumbnails of the results (decoded off the UI thread, upright, without holding
-// the files) and the buttons that open a result.
+// the files), the buttons that open a result, and Undo (#553).
 
 using Avalonia;
 using Avalonia.Headless.XUnit;
@@ -251,6 +251,94 @@ public void A_result_opens_with_its_app_and_open_with_only_where_the_system_has_
         }
     }
 
+    [AvaloniaFact]
+    public async Task Undo_moves_the_results_to_the_trash_while_they_are_as_the_job_left_them()
+    {
+        TestServices.EnsureInitialized("en");
+        var loc = AppHost.Get<ILocalizer>();
+        var store = AppHost.Get<UserDataStore>();
+        var folder = Directory.CreateTempSubdirectory("filee-undo-").FullName;
+        store.ClearHistory();
+        try
+        {
+            var a = Path.Combine(folder, "a.png");
+            var b = Path.Combine(folder, "b.png");
+            File.WriteAllBytes(a, [1]);
+            File.WriteAllBytes(b, [2]);
+            var entry = Entry([a, b]);
+            entry.Undoable = [Stamp(a), Stamp(b)];
+            store.AddHistory(entry);
+            var platform = new OpeningPlatform(false);
+
+            // Only the Home page (with the history to save) offers it.
+            Assert.False(new HistoryItemViewModel(entry, loc, platform).CanUndo);
+
+            // The Trash refuses the second result: the first stays moved (and saved as such), the card says why and
+            // still offers Undo for the one left, even rebuilt from the saved history.
+            platform.Refuse = new TrashRefusal("trash.in_use");
+            platform.RefuseOnly = b;
+            var item = new HistoryItemViewModel(entry, loc, platform, store: store);
+            Assert.True(item.CanUndo);
+            await item.UndoCommand.ExecuteAsync(null);
+            Assert.Equal("b.png couldn't be moved to the Recycle Bin / Trash: the file is open in another program", item.UndoError);
+            Assert.Equal([a], platform.Trashed);
+            Assert.False(entry.Undone);
+            Assert.True(item.CanUndo);
+            var reloaded = new UserDataStore(store.Directory);
+            reloaded.Load();
+            Assert.Equal([true, false], Assert.Single(reloaded.History).Undoable.Select(o => o.Trashed));
+            Assert.True(new HistoryItemViewModel(reloaded.History[0], loc, platform, store: store).CanUndo);
+
+            platform.Refuse = null;
+            await item.UndoCommand.ExecuteAsync(null);
+            Assert.Equal([a, b], platform.Trashed); // the first isn't asked for again
+            Assert.True(Assert.Single(store.History).Undone);
+            var undone = new HistoryItemViewModel(store.History[0], loc, platform, store: store);
+            Assert.False(undone.CanUndo);
+            Assert.Equal("Undone: the results are in the Recycle Bin / Trash", undone.UndoneText);
+
+            // "Replace the original" sent the originals there first: the card says they're there too.
+            entry.OriginalsInTrash = true;
+            Assert.Equal("Undone: the results are in the Recycle Bin / Trash, and so are the originals they replaced",
+                new HistoryItemViewModel(entry, loc, platform, store: store).UndoneText);
+
+            // A result written again since (an edit, another conversion over it) is never moved.
+            var c = Path.Combine(folder, "c.png");
+            File.WriteAllBytes(c, [3]);
+            var changed = Entry([c]);
+            changed.Undoable = [Stamp(c)];
+            File.AppendAllText(c, "edited");
+            Assert.False(new HistoryItemViewModel(changed, loc, platform, store: store).CanUndo);
+            Assert.True(File.Exists(c));
+
+            // Every result is checked before any moves: one changed while the card was open stops it with nothing moved.
+            var d = Path.Combine(folder, "d.png");
+            var e = Path.Combine(folder, "e.png");
+            File.WriteAllBytes(d, [4]);
+            File.WriteAllBytes(e, [5]);
+            var pair = Entry([d, e]);
+            pair.Undoable = [Stamp(d), Stamp(e)];
+            var open = new HistoryItemViewModel(pair, loc, platform, store: store);
+            File.AppendAllText(e, "edited");
+            await open.UndoCommand.ExecuteAsync(null);
+            Assert.Equal("e.png couldn't be moved to the Recycle Bin / Trash: it was changed after the conversion", open.UndoError);
+            Assert.True(File.Exists(d));
+            Assert.DoesNotContain(d, platform.Trashed);
+            Assert.False(open.CanUndo);
+        }
+        finally
+        {
+            store.ClearHistory();
+            Directory.Delete(folder, true);
+        }
+    }
+
+    private static HistoryOutput Stamp(string path)
+    {
+        var info = new FileInfo(path);
+        return new HistoryOutput { Path = path, Length = info.Length, WrittenUtc = info.LastWriteTimeUtc };
+    }
+
     [AvaloniaTheory]
     [InlineData("en", false)]
     [InlineData("ru", false)]
@@ -275,7 +363,9 @@ public void Recent_conversions_show_their_results(string language, bool dark)
             File.WriteAllBytes(report, [0]);
             store.AddHistory(Entry([report], "PDF", [Path.Combine(folder, "Annual report.docx")]));
             store.AddHistory(Entry([sunset], "PNG", [Path.Combine(folder, "sunset.heic")]));
-            store.AddHistory(Entry([photo], "JPG 70%", [Path.Combine(folder, "IMG_0412.heic")]));
+            var newest = Entry([photo], "JPG 70%", [Path.Combine(folder, "IMG_0412.heic")]);
+            newest.Undoable = [Stamp(photo)];
+            store.AddHistory(newest);
 
             var vm = new MainWindowViewModel(AppHost.Services, AppHost.Get<ILocalizer>(), AppHost.Get<UpdateService>());
             vm.Navigate("home");
@@ -291,6 +381,7 @@ public void Recent_conversions_show_their_results(string language, bool dark)
             Assert.False(page.History[2].HasThumbnail);
             Assert.Equal("PDF", page.History[2].FormatBadge);
             Assert.All(page.History, item => Assert.Equal(OperatingSystem.IsWindows(), item.CanOpenWith));
+            Assert.Equal([true, false, false], page.History.Select(item => item.CanUndo));
 
             // A search lists them anew: the thumbnails come from the cache at once.
             page.Search = "sunset";
@@ -379,6 +470,21 @@ private sealed class OpeningPlatform(bool openWith) : IPlatformServices
     {
         public List<string> Opened { get; } = [];
         public List<string> OpenedWith { get; } = [];
+        public List<string> Trashed { get; } = [];
+        public TrashRefusal? Refuse { get; set; }
+
+        /// <summary>Refuses only this path, when set.</summary>
+        public string? RefuseOnly { get; set; }
+
+        public TrashRefusal? MoveToTrash(string path)
+        {
+            if (Refuse is not null && (RefuseOnly is null || RefuseOnly == path))
+                return Refuse;
+            File.Delete(path);
+            Trashed.Add(path);
+            return null;
+        }
+
         public bool SupportsOpenWith => openWith;
         public void OpenFile(string path) => Opened.Add(path);
         public void OpenWith(string path) => OpenedWith.Add(path);
diff --git a/tests/Filee.Core.Tests/HistoryEntryTests.cs b/tests/Filee.Core.Tests/HistoryEntryTests.cs
index 8778d4bd..bf484177 100644
--- a/tests/Filee.Core.Tests/HistoryEntryTests.cs
+++ b/tests/Filee.Core.Tests/HistoryEntryTests.cs
@@ -51,4 +51,74 @@ public async Task A_job_without_failures_keeps_no_preset()
         Assert.Empty(entry.Failures);
         Assert.Null(entry.Preset);
     }
+
+    [Fact]
+    public async Task A_finished_job_remembers_its_results_as_they_were_for_undo()
+    {
+        using var dir = new TempDir();
+        var photo = dir.File("photo.jpg");
+        await using var queue = new JobQueue(new ConverterCatalog([new FakeConverter("magick", new ConversionEdge("jpg", "png"))]));
+        var job = new ConversionJob([photo], new Preset { TargetFormat = "png" }, "PNG");
+        await queue.RunAsync(job);
+
+        var store = new UserDataStore(dir.Path);
+        store.Load();
+        store.AddHistory(HistoryEntry.From(job));
+        var reloaded = new UserDataStore(dir.Path);
+        reloaded.Load();
+        var entry = Assert.Single(reloaded.History);
+
+        var result = Assert.Single(entry.Undoable);
+        Assert.Equal(Assert.Single(job.Outputs), result.Path);
+        Assert.False(entry.OriginalsInTrash);
+        Assert.False(entry.Undone);
+        Assert.True(result.Unchanged());
+
+        // Written again since (another conversion with "Overwrite", an edit): Undo must leave it alone.
+        File.AppendAllText(result.Path, "edited");
+        Assert.False(result.Unchanged());
+        File.Delete(result.Path);
+        Assert.False(result.Unchanged());
+    }
+
+    [Fact]
+    public async Task A_document_whose_pictures_pandoc_put_beside_it_has_no_undo()
+    {
+        using var dir = new TempDir();
+        var doc = dir.File("notes.docx");
+        await using var queue = new JobQueue(new ConverterCatalog([new FakeConverter("pandoc", new ConversionEdge("docx", "md")) { PictureFolder = true }]));
+        var job = new ConversionJob([doc], new Preset { TargetFormat = "md" }, "MD");
+        await queue.RunAsync(job);
+
+        // Undo would move the .md and leave its "_files" folder of pictures behind.
+        Assert.True(Directory.Exists(Path.Combine(dir.Path, "notes_files")));
+        Assert.Empty(HistoryEntry.From(job).Undoable);
+    }
+
+    [Fact]
+    public async Task A_job_with_more_results_than_undo_takes_has_none()
+    {
+        using var dir = new TempDir();
+        var pdf = dir.File("book.pdf");
+        var converter = new FakeConverter("pdfium", new ConversionEdge("pdf", "png")) { OutputsPerInput = HistoryEntry.MaxUndoable + 1 };
+        await using var queue = new JobQueue(new ConverterCatalog([converter]));
+        var job = new ConversionJob([pdf], new Preset { TargetFormat = "png" }, "PNG");
+        await queue.RunAsync(job);
+
+        Assert.Equal(HistoryEntry.MaxUndoable + 1, job.Outputs.Count());
+        Assert.Empty(HistoryEntry.From(job).Undoable);
+    }
+
+    [Fact]
+    public void An_entry_from_before_undo_has_nothing_to_undo()
+    {
+        using var dir = new TempDir();
+        File.WriteAllText(Path.Combine(dir.Path, "history.json"), """[{"JobId":"a","PresetName":"PNG","Outputs":["photo.png"]}]""");
+        var store = new UserDataStore(dir.Path);
+        store.Load();
+
+        var entry = Assert.Single(store.History);
+        Assert.Empty(entry.Undoable);
+        Assert.False(entry.Undone);
+    }
 }
diff --git a/tests/Filee.Core.Tests/ReplaceOriginalTests.cs b/tests/Filee.Core.Tests/ReplaceOriginalTests.cs
index e7ed8627..a39c5e7b 100644
--- a/tests/Filee.Core.Tests/ReplaceOriginalTests.cs
+++ b/tests/Filee.Core.Tests/ReplaceOriginalTests.cs
@@ -59,6 +59,32 @@ public async Task The_result_takes_the_place_of_the_original_which_goes_to_the_t
         Assert.Null(job.Files[0].NoticeKey);
     }
 
+    [Fact]
+    public async Task Undo_may_move_a_result_in_the_originals_place_and_says_the_original_is_in_the_trash()
+    {
+        using var dir = new TempDir();
+        using var bin = new TempDir();
+        var source = dir.File("a.jpg");
+
+        var entry = Filee.Core.History.HistoryEntry.From(await Run(new FakeTrash(bin.Path), source, Replacing));
+
+        Assert.Equal(source, Assert.Single(entry.Undoable).Path);
+        Assert.True(entry.OriginalsInTrash);
+    }
+
+    [Fact]
+    public async Task When_the_original_stays_it_is_never_a_result_undo_could_move()
+    {
+        using var dir = new TempDir();
+        var source = dir.File("a.jpg");
+
+        var entry = Filee.Core.History.HistoryEntry.From(await Run(new FakeTrash(dir.Path, refuse: new TrashRefusal("trash.in_use")), source, Replacing));
+
+        // The result was kept beside the original: only it can be undone.
+        Assert.NotEqual(source, Assert.Single(entry.Undoable).Path);
+        Assert.False(entry.OriginalsInTrash);
+    }
+
     [Fact]
     public async Task When_the_trash_refuses_both_are_kept_with_the_reason()
     {
@@ -237,6 +263,8 @@ public async Task Only_if_smaller_leaves_an_unchanged_original_alone()
         Assert.Equal([source], Directory.GetFiles(dir.Path)); // no copy beside it
         Assert.Equal("x", File.ReadAllText(source));
         Assert.Equal("notice.original_unchanged", job.Files[0].NoticeKey);
+        // The "result" is the user's own file: Undo must never send it to the Trash.
+        Assert.Empty(Filee.Core.History.HistoryEntry.From(job).Undoable);
     }
 
     [Fact]