Convert Your Media
Choose a file, pick the format you want, tweak any options, then download the converted file
Convert video / audio between formats — no upload, no watermark, no sign up
Choose a file, pick the format you want, tweak any options, then download the converted file
100% Private, your file never leaves your browser. The conversion happens locally on your device using WebAssembly. Nothing is uploaded to our servers.
This tool runs FFmpeg, the industry‑standard media toolkit, compiled to WebAssembly so it runs entirely inside your browser. It converts between video formats (MP4, WebM, MOV, MKV, GIF) and audio formats (MP3, WAV, M4A, OGG, FLAC), no account, no watermark, no server queue.
The first time you convert, the tool downloads the media engine (~30MB) to your browser and caches it, so later conversions start instantly. Because the work happens on your own device, very large or long files may take longer on lower‑powered machines.
Want to convert, resize, watermark or generate media automatically at scale? The Bannerbear API automates it for you. Plug it into your app or no‑code workflow and process thousands of files on autopilot.
Trim, resize, caption and combine your videos right in your browser, no upload and no watermark
Start a free trial with 30 API credits, no credit card required
