Video Compressor
Last updated: June 1, 2026In-browserShrink video file size without losing quality.
Video Compressor is a free online tool to shrink video file size without losing quality. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Video Compressor
The Video Compressor shrinks MP4, MOV, WebM and MKV files right in your browser, turning a clip that's too big to email or send on WhatsApp into a fraction of the size. Pick a quality level and optional target resolution, watch the estimated size update, and download — your video is never uploaded and there's no watermark.
Read the full guide: How to Compress a Video for WhatsApp (Free Online)
- 1Drop in your video (MP4, MOV, WebM or MKV).
- 2Choose a quality level, and optionally a smaller resolution like 720p.
- 3Compress and download the smaller file — processed entirely on your device.
No upload, fully private
Compression runs locally with in-browser FFmpeg, so your footage never leaves your device.
Hit any size limit
Lower the quality or resolution to get under email, WhatsApp or upload limits without guesswork.
No watermark
The compressed video is clean — no logos, no sign-up and no trial caps.
Video Compressor — frequently asked questions
How do I compress a video for email or WhatsApp?
Drop the video in, pick a lower-quality preset (and optionally 720p or 480p), then download. That's usually enough to get under the 25MB email and 16MB WhatsApp limits.
Will compressing reduce the video quality?
Some quality is traded for size, but you control how much. Medium settings cut size dramatically with little visible difference; lower settings shrink it further for strict limits.
Is there a maximum file size?
There's no fixed cap — it's limited by your device's available memory because everything runs in the browser. Very large 4K files compress faster on a desktop.
Is it safe to compress videos here?
Yes. The video is processed entirely on your device with WebAssembly FFmpeg — nothing is uploaded, stored or shared.
What formats can I compress?
MP4, MOV, WebM and MKV. The output is a widely compatible MP4.
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