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Free Online Video Compressor - Reduce Video Size

156 uses

Drop a video file here or click to browse

Supports MP4, WebM, AVI, MOV and more

Before
After

Tips

Quality vs Size
Lower CRF values mean higher quality but larger files. CRF 28 offers a good balance.
Resolution
Downscaling to 720p significantly reduces file size with minimal visual difference.
Privacy
All processing happens locally in your browser. No video data is uploaded.
Speed
Processing time depends on video length and your device performance.

Frequently Asked Questions

Q How much can I compress a video?
A Typically 40-80% size reduction depending on the original encoding and quality settings.
Q Will compression reduce video quality?
A Some quality loss is expected. Use High (CRF 23) for minimal loss, Tiny (CRF 38) for maximum compression.
Q What formats are supported?
A MP4, WebM, AVI, MOV, MKV and most common video formats. Output is always MP4.
Q Is there a file size limit?
A Since processing happens in your browser, it depends on your device memory. Works well under 500MB.
Q Can I remove the original audio track from my video during online compression?
A Yes, our video compressor allows you to remove the audio track while reducing file size. Look for the 'Remove Audio' or 'Mute Video' option in the settings before starting compression. This is useful for creating silent video clips or preparing footage to add a new voiceover or background music, and further reduces the overall file size.
Q Why is my computer slow when compressing video online without upload?
A When compressing video directly in your browser without uploading, your device's CPU and memory are doing all the heavy lifting. This resource-intensive process can make your computer seem slow, especially if it has older hardware or if you're running many other applications. For optimal performance, ensure your browser is up-to-date and try closing unnecessary tabs or programs during compression to free up system resources.
Q Will this tool upload my video to a server?
A Absolutely not. Processing happens entirely within your web browser. No files leave your computer. This ensures your video's privacy and speeds things up significantly as there's no upload wait time. You'll see the compressed file directly in your downloads folder once it's done.
Q Can I compress a video for TikTok without losing my vertical aspect ratio?
A Yes, your video keeps its original dimensions. The compressor only changes the file size, not the shape or resolution. For TikTok, select "High" quality (CRF 23) to stay sharp. A 30-second 1080x1920 clip usually drops from 50MB to around 12MB.
Q Can I compress a video that has DRM or copyright protection?
A No, you can't. DRM-protected files from streaming services won't play in the browser at all. The tool needs to read the raw video data to compress it, and DRM explicitly blocks that. If you downloaded a video from Netflix or Amazon Prime, those files are encrypted and won't work. Stick to your own recordings or royalty-free clips. A 30-second screen recording of a protected video still compresses fine, though.

How to Compress

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