Kitbox

KitBox is a local-first digital toolkit for Windows, macOS, and Linux. It runs file work locally on your device using bundled processing engines, so common image, video, audio, PDF, Word, and Markdown workflows do not require cloud uploads.

The app is built with Electron, React, TypeScript, Vite, FFmpeg, pdf-lib, Mammoth, Marked, Turndown, and yt-dlp.

Use Cases

• Convert images between PNG, JPG, JPEG, and WEBP.
• Convert video between MP4, WEBM, AVI, MOV, and MKV.
• Convert audio between MP3, WAV, OGG, AAC, FLAC, and M4A.
• Merge and split PDFs.
• Convert images to PDF.
• Extract PDF text.
• Convert PDFs to HTML, DOCX, and page-image ZIP archives.
• Convert Word documents to HTML, TXT, PDF, Markdown, and JSON.
• Convert Markdown to PDF.
• Download supported YouTube media for personal, lawful use.
  

COMPLETELY FREE AND OPEN SOURCE!