Screenshots of chats, photos of delivery labels, pictures of documents and street photos often contain things that should not travel further: a phone number, an address, a child's face, a license plate, an account number. This tool lets you cover those areas before you post or send the image.
Because the editing happens in your browser, the sensitive original never leaves your device.
How to use it
- Choose an image.
- Pick an effect: blur (with a strength slider), pixelate (with a block size) or black box.
- Draw rectangles on the preview over the areas you want to hide.
- Select an area to move it or delete it. Use undo to step back.
- If you want the whole picture soft, for example as a background for a slide, use the blur whole image option with its own strength setting.
- Download the result. The image keeps its original format.
There is no automatic face or text detection. You decide what to hide, so look over the whole image before downloading.
Which effect to use
| Effect | Good for | Watch out for |
|---|---|---|
| Blur | Faces in the background, plates in casual photos, a softer look | Weak blur on text can sometimes be partly read or reconstructed |
| Pixelate | Faces and screens when a visible censor look is fine | Large blocks over short text such as numbers can sometimes be guessed |
| Black box | Passwords, ID and card numbers, addresses, signatures, anything sensitive | Nothing: the pixels underneath are fully replaced |
The important point: blur and pixelation are not reliable for sensitive text. With weak settings, or when the possible content is limited (a short number, a known font), parts of the original can sometimes be recovered. For anything that could cause harm if read, use the black box.
Redaction habits that actually protect you
- Cover more than the text. Draw the box a little larger than the words, so the length and edges of the text do not give hints.
- Check the whole picture. The same information often appears twice: an address on the label and on the invoice next to it, a name in a chat header and in a message, a face reflected in a window.
- Remember the hidden data. A photo can carry its GPS location and capture date in its metadata. Clean it with Remove EXIF and location before sharing, or read more in What is EXIF.
- Cut what you do not need. If a whole region is irrelevant, cropping it away with Crop image is even safer than covering it.
- Share only the new file. The original on your device stays unchanged; make sure you attach the downloaded copy.
Frequently asked questions
Is blurring safe for passwords or ID numbers?
No. Use the black box for anything sensitive. Weak blur or large pixel blocks can sometimes be partly reversed on text, while a solid black box replaces the pixels completely.
Can someone undo the effect in my downloaded image?
The downloaded file contains only the edited pixels; there is no hidden layer with the original. The risk is reconstruction from blurred or pixelated text, which is why the black box is the safe choice for private data.
Does the tool find faces automatically?
No. You draw the areas yourself, which also means nothing is hidden unless you cover it. Check the preview carefully before downloading.
Is my image uploaded to a server?
No. The image is processed entirely in your browser and is not sent anywhere.