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Convert, compress, trim, and extract audio from videos — all in your browser, so your files never leave your device. No sign-up, no watermarks. Best for short clips.
7 tools · free · no sign-up
These tools run a full video engine — FFmpeg, compiled to WebAssembly — inside the page itself. The first time you convert something, your browser downloads the engine (about 30 MB, cached after that); from then on, converting to MP4 or GIF, compressing, trimming, and extracting MP3 audio all happen on your own machine. Your file is read into the browser's memory and never leaves your device, which is also why there is a practical size limit: a long, high-resolution video can exhaust that memory, so short clips work best. The screen recorder and webcam test use the browser's own capture permissions and record locally too. The trade-off is honest: uploads to a server would handle bigger files, but then your video would be on someone else's computer. For the clips most people actually need converted, local processing is faster and private by construction.
No — these tools process video locally in your browser using an in-page engine, so your files never leave your device.
Processing happens in your browser's memory, so large videos can be slow or fail. Short clips work best.
No — every video tool is free and works instantly with no sign-up.