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.

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

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

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.

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

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

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.

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

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

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

Inspect local DuckDB databases, query data, explore schemas, and compare database structures.

Generate reproducible mock data, boundary cases, missing values, and invalid test records.

Design printable label sheets with custom dimensions, CSV data merging, and PDF output.

Split PDFs, SVGs, or images across multiple sheets for printing at a chosen physical size.