Browser video compressor
Compress video in your browser.
Use browser-based compression to create a smaller MP4 without sending the selected video to a remote converter.
Compress video in browser
Run local compression with simple quality and resolution settings.
Your selected video is processed in this browser tab. It is not uploaded to a conversion server.
Ready.
Browser compression runs locally
The selected file stays on your device while the tool creates the compressed output.
Best settings and limits
Best first try
Use 720p for a balanced result. If processing is slow, try a shorter clip or 480p.
When this may fail
Browser compression is convenient but memory-limited. Desktop browsers handle larger files more reliably than phones.
Privacy boundary
The selected video file stays on your device while the tool creates the output.
Frequently asked questions
Is browser video compression the same as uploading?
No. The selected video is processed locally in the browser tab.
Does this work offline?
After the app code is loaded, processing happens locally. A fresh visit still needs the page and engine files to load.
Why is browser compression slower than cloud tools?
Your own device does the encoding work, so speed depends on CPU, memory, and browser limits.