Blur & Pixelate Image
Hide faces, license plates and private details — drag to blur or pixelate any area, privately in your browser.
Drag on the image to mark an area to hide. Drag a box to move it, pull a corner to resize, or click ✕ to remove it.
Mark an area above to see the result.
How to blur & pixelate in 3 steps
- 1
Upload an image
Drop a photo or screenshot into the box to load it.
- 2
Mark what to hide
Drag on the image to box each area, then move or resize the boxes. Switch between Blur and Pixelate and set the strength.
- 3
Download
A live preview shows the redacted result — save it with one click. Nothing was uploaded.
Why use Kotopig?
Your files stay private
Images are processed on your device and never uploaded to any server.
Instant results
No upload or download queue — processing starts the moment you drop a file.
Free, no sign-up
No account, no watermarks on output, no per-day limits. Just open and use.
Frequently asked questions
Are my images uploaded to a server?
No. Every operation runs entirely inside your browser using your device's own processor. Your files never leave your computer, so the tool works even with the page disconnected from the internet after loading.
Can the blur be reversed?
No. Kotopig rewrites the actual pixels in the area, so the original detail is permanently destroyed in the downloaded file — unlike a black box layered over a PDF, there's nothing underneath to recover.
Should I use blur or pixelate?
Both hide content. Pixelate (mosaic) gives a clean, obviously-censored look that's best for faces and text; blur is softer and blends in more. Use a high enough strength that the detail is unreadable.
Can I hide more than one thing at once?
Yes. Drag as many boxes as you need — every face, name or plate in the photo — and they're all redacted together when you download.
Does it work for license plates and documents?
Yes. It's ideal for blurring license plates, faces, addresses, account numbers and signatures before sharing a photo or screenshot online.
What formats can I use?
JPG, PNG and WebP are supported. The output keeps the original format, or PNG if the source was PNG, so transparency is preserved.