browser-kitty

Scan paper documents, correct perspective, arrange pages, and save a submission-ready PDF.

Build visual PDF-processing workflows with reusable steps, previews, and local export.

Convert a selected video section into an animated GIF or WebP with crop and size controls.

Draw characters in a browser and turn them into a TrueType handwriting font.

Track local PPTX versions, compare slides, and work with branches, merges, and conflicts.

Turn PPTX slides and narration into MP4 video, with scripts, audio, and subtitles.

Fit entered text at the largest readable size on A4 pages and print from a browser.

Inspect and clean selected metadata and hidden review items in DOCX, XLSX, and PPTX files.

Inspect Apache Arrow IPC files and streams, including schemas, record batches, and data.

Fill PDF forms, place text and marks, add signatures, and save completed documents locally.

Open DBF files and inspect table fields, records, and encoding in your browser.

Cover answers on images and study them through an interactive reveal-and-recall sheet.

Build visual FFmpeg filter graphs, preview results, and render processed video or audio in the browser.

Connect smartphones as motion sensors over WebRTC and analyze synchronized measurements.

Compress local videos to H.264/AAC MP4 or VP9/Opus WebM using FFmpeg WebAssembly.

Calibrate images using a reference size and measure lengths, angles, areas, and counts.

Count people crossing a line in two directions using a fixed camera or local video.

Extract original embedded images from Word, Excel, and PowerPoint documents in a browser.

Manage repeatable attendance and check-in sessions using a local roster, history, and CSV export.

Recreate a photo composition using a transparent camera overlay of an earlier image.