Blur or Pixelate Part of an Image
Hide faces, number plates and private details by blurring, pixelating or blacking out.
Drop a photo or screenshot
or select one. You can also paste a screenshot (Ctrl+V)
Files are processed on this device. Nothing is uploaded.
How to use Blur or Pixelate Part of an Image
- Add a photo or paste a screenshot.
- Drag a box over each face, number plate, name or message you want to hide. Move or remove boxes as needed.
- Choose pixels, blur or solid black, then select Hide and download.
How it works
Each marked area is replaced in the saved file: pixels averages the area into large blocks, blur smooths it with a three-pass box blur, and solid black paints over it. Strength is relative to the size of each box, so a small face and a large one are hidden equally well. The original pixels under the box are not kept anywhere in the new file.
For anything truly sensitive, such as passwords, card numbers, addresses or documents, use solid black. Light blur and coarse pixelation of text can sometimes be reversed or guessed, because the blurred shape still depends on the characters underneath. Solid black leaves nothing to recover. For faces, strong pixelation or blur is normally enough.
The work is done by your browser on your device. Your pictures are not uploaded, so there is no queue, no size limit set by us and no copy kept anywhere. Photos from phones also carry hidden location data; remove it with Remove EXIF data before sharing.
Example
A screenshot of a chat: drag a box over the phone number and each name, choose solid black, and download a copy that is safe to post.
Frequently asked questions
Is blurring safe for hiding text?
Not always. Researchers have recovered text from light blur and from pixelation in some cases. For passwords, account numbers and addresses, choose solid black.
Can the blur be undone from the saved picture?
The saved file contains only the changed pixels, not the originals. Solid black cannot be undone at all; strong blur and pixelation destroy most detail but are not a mathematical guarantee for text.
Does it detect faces automatically?
No. You mark the areas yourself, which also means nothing is analysed or sent to any face-recognition service.
Can I blur the background instead?
Not automatically. This tool hides the areas you mark; separating a subject from its background needs an AI model.
Does the rest of the picture change?
No. Only the marked areas are altered; the picture keeps its size.
Limitations
- No automatic face or text detection.
- No background blur (portrait effect).
- One picture at a time.
- Blur and pixelation are not a guarantee for text: use solid black for secrets.
Last reviewed November 9, 2026. How we build and test tools.