Video Compressor
Shrink big videos so they fit WhatsApp, email or a slow upload. Everything is processed inside your browser — the file is never uploaded.
- Files never leave your device
- No signup
- No upload limits
How it works
- STEP 1
Add your video
Drag a video into the box or tap to pick one from your device.
- STEP 2
Pick a quality preset
Small for messaging apps, Balanced for most uses, High to keep full resolution.
- STEP 3
Compress and save
Press Compress — the smaller MP4 downloads when it finishes.
Good to know
- •Compression uses your own processor, so a long clip can take a few minutes — keep the tab open.
- •Files over roughly 200MB may exhaust browser memory; a desktop browser handles them better than a phone.
- •Output is always an MP4 (H.264 video, AAC audio) for maximum compatibility.
Frequently asked questions
Is the video compressor free?
Yes. No account, no watermark and no file-size cap imposed by us.
Is my video uploaded to a server?
No. Compression runs inside your browser using WebAssembly, so the video never leaves your device.
How much smaller will my video get?
Typically 50-80% smaller depending on the preset and the source. The result screen shows the exact saving.
Which formats can I compress?
MP4, MOV, WebM, MKV and AVI go in; a widely compatible MP4 comes out.
How do I compress a video for WhatsApp?
Choose the Small file preset. It targets 720p, which comfortably fits WhatsApp's limits for most clips.
Why is it taking so long?
All the work happens on your own processor. A one-minute clip usually takes under a minute on a laptop and longer on a phone.
Will the audio be kept?
Yes. Audio is re-encoded to 128kbps AAC, which sounds clean and plays everywhere.
Does it work offline?
The compression engine downloads once when the page loads; after that the processing itself needs no connection.