File Converter

Convert images, audio, and video clips entirely in your browser — nothing is uploaded, everything runs locally.

🖼️

Drop images here or click to upload

PNG · JPG · WebP · GIF · BMP · AVIF — batch supported

Output format

Quality — 85%

Max width (px, 0=original)

Max height (px, 0=original)

Maintain aspect ratio Convert to greyscale

ℹ️ Metadata (EXIF) is always stripped automatically — re-encoding via canvas never preserves it.

🎵

Drop audio files here or click to upload

MP3 · WAV · OGG · FLAC · M4A (decoding depends on your browser) — batch supported

Output format

MP3 bitrate

ℹ️ Decoding uses your browser's built-in codecs — MP3/WAV decode everywhere, FLAC and OGG decode in Chrome/Firefox but not reliably in Safari. There's no lightweight pure-JS FLAC or OGG encoder available, so WAV and MP3 are the honest ceiling for output formats here.

🎬

Drop a video here or click to upload

One video at a time · MP4/WebM work best

Trim range —

START END

ℹ️ This plays the clip through MediaRecorder and re-encodes it to WebM (VP9/Opus) — it isn't a byte-exact cut of the original file, but quality loss is minimal. A frame-accurate, no-recompression trim needs a full ffmpeg-in-the-browser build (~30MB+ download), which is out of scope for a lightweight local tool. Needs Chrome or Firefox — Safari's captureStream() support is unreliable.

Document conversion is split across dedicated tools rather than crammed in here, since each format needs a genuinely different engine:

📝 Markdown

Markdown ⇄ HTML preview and export.

📄 PDF Convert

Images ⇄ PDF, merge, split, extract text.

🗄️ Archive Convert

ZIP ⇄ TAR/TAR.GZ, browse and repack.

Plain-text formats (TXT, CSV, JSON) mostly just need copy-paste + the tools above — a generic DOCX/RTF converter would need a much heavier library than fits this site's "no dependencies bigger than the tool itself" approach, so it's intentionally left out rather than shipped half-working.