Video converter
Convert video from one format to another — MP4, WebM, MOV, MKV, or GIF. Free, no software, right in your browser without uploading your file.
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Conversion runs fully in your browser via WebAssembly (FFmpeg). The engine downloads once (~30 MB) on first use; speed depends on your device.
FAQ
Is my video uploaded to a server?+
No. Conversion runs entirely in your browser using WebAssembly (FFmpeg) — the video never leaves your device.
Which formats are supported?+
You can convert to MP4, WebM, MOV, MKV, and GIF. The source format is detected automatically from the file you pick.
Why is the first run slow?+
On first use, the converter engine (FFmpeg) downloads once (~30 MB). After that it's faster. Conversion speed depends on your device.
Is there a file-size limit?+
Since it runs in the browser, it works best for short clips. Very large files can be slow or fail due to browser memory limits.
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