Audio & video tools

Trim, compress, and convert audio and video with ffmpeg running locally in your browser.

Extract the audio track from any video, trim audio and video to exact points, compress files to shareable sizes, and turn clips into GIFs or animated WebP — all powered by ffmpeg.wasm, the real ffmpeg compiled to WebAssembly. The engine loads once (~25 MB) and caches; after that everything runs offline on your device. Media files are big and often personal — home videos, voice memos, meeting recordings — and uploading them to a converter is slow and needlessly exposes them. Processing locally means no upload wait and no server ever sees your files. Fair warning: browser encoding is single-threaded, so long videos take time. For a one-off, it's worth it.

Every audio & video tool

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Nothing has left this page since you opened the tool. Show network activity

The browser enforces this: the site’s security policy only lets the page talk to the code libraries’ servers and an anonymous usage counter (tool name, file type, size range). A request carrying your file to anywhere else would be blocked before it left.

Check it yourself: open your browser’s developer tools, go to the Network tab, and run the tool. Or turn off Wi-Fi once the tool has loaded; it keeps working.

Every audio & video tool

Drop your file here

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