Convert video between MP4, WebM, MOV, AVI, MKV and GIF container formats entirely in your browser, no uploads.. Video Format Converter is a free online tool from the ToolsRift Video Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Load your video, choose the output format you need, and press Convert. The re-encoded file is ready to download once processing finishes.
MP4, WebM, MOV, AVI and MKV as containers, using the H.264 (MP4/MOV/AVI) or VP8/VP9 (WebM) codecs depending on your chosen output.
WebM files are usually smaller for the same visual quality and are natively supported by all modern browsers, making them ideal for websites.
Any format conversion re-encodes the video, so there is technically a small generation loss, but at the default high-quality setting it is not visible in normal playback.