Blur one part. Leave the rest alone.
A house number, a screen in the corner, a face at the edge of frame. Set a rectangle and only that rectangle is touched — the rest of the picture is passed through.
Precise
A rectangle you can see
Adjustable
Soft, or flat colour
Private
Deleted after 1 hour
How it works
- 01
Add your video
Drop in an MP4, MOV, MKV, WebM or AVI file.
- 02
Set the area
Type the rectangle in pixels and watch it land on the preview, then pick a strength.
- 03
Download
Only that rectangle is touched. The rest of the picture comes back untouched.
Related: Crop video · Change aspect ratio · Trim video · Blur an image.
Common questions
Is a blur good enough to hide something sensitive?+
No, and this matters. A blur is a reversible mathematical transform on a fixed neighbourhood of pixels, and a light blur over text, a number plate or a face can sometimes be partly reconstructed. Treat it as an aesthetic effect. If something genuinely must not be readable, crop it out of frame or cover it with a solid shape instead.
Does it affect the rest of the video?+
No — and that is the guarantee the tool is built around. Only the rectangle you set is blurred; everything outside it is passed through. The video is re-encoded once, as any edit requires, but no other part of the picture is altered.
Can I blur something that moves?+
Not here. The rectangle is fixed for the whole clip, which suits a static thing — a house number, a screen in the corner, a logo on a wall. For a face that moves around the frame you would need tracking, which is a different tool; the practical workaround is to trim the clip into sections and do each separately.
What does the strength number do?+
It is the radius of the box blur, in pixels. Small numbers soften; large ones reduce the area to flat colour. If you can still make out what was there, raise it — a blur that leaves the subject recognisable has cost you the pixels and given you nothing.
Free, no watermark?+
Yes. Free, no watermark, no signup.