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Blur video online

Blur the whole video, or just the parts that matter: faces, screens, names and plates. Free, with no upload, no signup and no watermark.

Choose a video to pixelate or blur

Drop one here or choose one from your device.

Works withMP4MOVWebMMKVand more

Private: your video never leaves your device.

  1. 1Choose video
  2. 2Pixelate
  3. 3Download

Sometimes you need to blur a whole video, like a clip you want as a soft background or footage that simply shows too much. More often you need to blur part of a video: a face in the crowd, a phone screen, a house number. This video blur tool does both, right in your browser.

Choose Whole video to blur every frame, or Chosen areas to blur only the boxes and ovals you draw. Areas can follow moving things, appear for just a few seconds, or be flipped so that everything except them is blurred.

How to blur a video

  1. Add your video

    Drop a video file into the tool above or choose one from your device. MP4, MOV, WebM and MKV all work, and the file stays on your device.

  2. Choose what to blur

    Select Blur, then Whole video or Chosen areas. For areas, drag on the video to draw a box, or select Find faces automatically. Set the strength with Blur amount.

  3. Export and download

    Select Export video. The video is rendered in your browser and saved as MP4 (or WebM where supported), with the original sound.

Blur part of a video

Switch to Chosen areas and drag on the video to draw an area. Drag it to move it, pull a corner to resize it, and switch its shape between Box and Oval. Add as many areas as you need.

Each area has its own timing. Move the playhead and press Starts here and Ends here to blur something only while it is visible, like a notification that pops up for two seconds.

If the thing you are blurring moves, select Track movement automatically and the area follows it, or turn on Follow movement and position it by hand at a few moments. For people, blur faces automatically instead of drawing each one.

Blur the whole video, or everything but one area

Whole video blurs every frame evenly. It is handy for a background loop, a teaser, or footage you only need for its sound and color.

To keep one thing sharp, draw an area over it and turn on Blur everything except the areas. The rest of the frame is blurred and your box or oval stays clear. It is a simple shape rather than a cut-out that follows a person's outline, so it works best on a subject that stays roughly in place or one you track.

How strong should the blur be?

Blur amount runs from 4 to 64 px, measured against your video's full resolution, and the preview is scaled to match the export. Low values soften; high values reduce detail to patches of color. To hide text or a face, raise it until you cannot read or recognize it at full screen.

Blur suits a soft, natural look. If the goal is privacy, pixelate with large blocks or use Black box, which leaves nothing of the original behind. The guide to censoring a video compares all three.

Quality, sound and file size

Only the blurred parts change; the rest of the picture is re-encoded to stay close to the original. Under Export settings you can choose MP4 or WebM, a smaller size or file, and whether to keep the sound. To shorten the clip at the same time, use the scissors under the preview to trim the start and end.

Questions about this kind of blur

Can I blur a video for free without a watermark?

Yes. Blurring and exporting are free, with no watermark, no signup and no fixed length or file size limit. Very long or 4K videos are limited only by your device's memory and speed.

Is my video uploaded when I blur it?

No. The video is opened, blurred and exported inside your browser, and it never leaves your device.

How do I blur a moving object in a video?

Draw an area over the object, then select Track movement automatically. The area follows it forwards and backwards from that moment. If tracking loses it, go to the time shown, move the area back onto the object and track again.

Can I blur just a few seconds of a video?

Yes. Choose Chosen areas, draw an area and press Starts here and Ends here. To blur the entire picture for a few seconds, stretch the area to the edges of the frame and set its times.

Can I blur the background of a video?

You can blur everything except a box or oval you choose, using the switch under the areas. It does not trace a person's outline like portrait mode, so a little background stays sharp around them.

What's the difference between blur and pixelate?

Blur softens detail smoothly, while pixelate replaces it with square blocks. Both hide detail when strong enough. For sensitive details, large blocks or Black box are safer than blur.

Which video formats can I blur?

MP4, MOV, WebM, MKV and most other common video files. Unusual codecs are converted in your browser first. The blurred video downloads as MP4, or as WebM in browsers that support it.

Keep censoring: related guides