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Video

Free Video Compressor

Shrink a video's file size right in your browser. Pick a quality preset, compress, and download.

What this does: re-encodes your video to a smaller H.264/AAC MP4 file, entirely in your browser using a WebAssembly build of FFmpeg. It is free, with no signup and no server upload: the file never leaves your device. The first run downloads a ~31MB engine (cached afterward, instant on later visits); because it runs single-threaded in the tab, it is slower than a desktop app, especially on large files or mobile.

Click to select a video or drag and drop it here.

Frequently asked questions

Is this video compressor free, and is my video uploaded anywhere?

Yes, it is 100% free with no signup, and no, your video is never uploaded. Compression runs entirely inside your browser tab using a WebAssembly build of FFmpeg, so the file never leaves your device.

Why does the first compression take a while to start?

The first time you use this tool, your browser downloads a ~31MB WebAssembly video engine (FFmpeg compiled to run in the browser). It is cached afterward, so later visits and later compressions start instantly.

Is browser-based compression as fast as a desktop app?

No. Processing runs single-threaded in the browser tab, so it is slower than a native desktop video tool, especially for large files or on mobile devices. For most everyday clips it still finishes in a reasonable time.