MP4 Compressor
Pick a quality tier and, optionally, drop the resolution for the biggest savings.
Drop files, or click to browse
MP4 files only — processed one at a time
Frequently asked questions
What's the difference between quality and resolution here?+
Quality controls how aggressively each frame is compressed; resolution controls the pixel dimensions. Lowering either shrinks the file — combine both for the biggest savings.
Will the output still play everywhere?+
Yes — the MP4 container and codec choice are kept broadly compatible with players and editors.
Is my video uploaded anywhere?+
No, compression runs locally via ffmpeg.wasm in your browser.
Need another format? Try the full Video Compressor, or explore all video tools.