browser-kitty

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

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

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

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

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.

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

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

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

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

Build profile-specific OpenCV.js and WebAssembly runtimes from selected OpenCV components.

Inspect JSONL and NDJSON records, malformed lines, field presence, and mixed data types.

Sample frames from a video and combine them into a printable visual contact sheet.

Record maintenance and recurring tasks by scanning NFC tags or QR codes attached to objects.

Add time-based notes and frame annotations to videos and export review results.

Build step-by-step visual guides and export them as portable, self-contained HTML lessons.

Sort batches of images into categories with on-device image classification and review.

Change video playback speed from 0.25x to 4x and export the result as MP4.

Use phone orientation sensors as a spirit level and inclinometer in your browser.

Align two before-and-after photos and highlight changes despite small camera-position shifts.