Cover a face or an address on a photo
Drag over the part you want to cover and it fills with blocks, or with one flat colour. The rest of the photo is untouched. No account, no watermark, and the photo never leaves your device — which is the point, for the kind of photo you cover things up in.
You choose the part
Drag over one thing or five: two faces, an address and a phone number. Everything you do not drag over stays exactly as it was.
No signup, no watermark
No account, no trial, no upgrade prompt on the download. Ads pay for the site.
Nothing is uploaded
The photo stays on your device. Cut the Wi-Fi once you have dropped it and it still works.
The camera details go too
A phone photo carries a hidden note of where it was taken. The copy you download does not have it.
How it works
- Drop your photo, or click the box to choose a file.
- Drag across the part you want to cover. Drag again for another part. Tap a covered area to take it off.
- Pick Blocks, Bigger blocks, or Solid. You can change your mind after dragging; the picture updates as you look at it.
- Press Cover and download and save the result.
Why the blocks are not a number you type
A block size in pixels is the wrong dial. The same block that completely covers small lettering leaves the first digits of a phone number showing when the number is printed larger — we measured that before building this. What matters is the size of the blocks against the size of the thing you are covering.
So the area you drag sets the blocks. Drag a tight box around the account number and the blocks come out to suit it; drag a big box around a face and they come out bigger. Bigger blocks is the coarser of the two, for small print.
Blocks or a solid fill
Blocks keep the shape and the colours of the photo, so the result still looks like a photo with something covered in it. That reads better, and it is what most people want.
A solid fill does not keep anything of what was underneath — the area becomes one flat colour. It looks blunter. If what is under there matters more to you than how the photo looks, that is the one to use.
What you get back
The same width and height in pixels, and the same kind of file you dropped. Making the copy re-saves the whole photo, so a JPG is written again at high quality; the change is smaller than the one the photo already went through inside the camera, and the file usually comes out a little lighter.
The hidden block of camera details does not survive that step. On a phone photo that block often holds the place it was taken, so the copy you hand over does not carry it.
Frequently asked questions
Can the covered part be brought back?
Blocks replace the area with an average of what was there, and bigger blocks keep less of it. That is what we can tell you. There is published work on reconstructing pixelated text, and we have not measured it here, so we will not tell you a mosaic cannot be undone. If you want none of the picture left in that spot, pick Solid: the area becomes one flat colour, so there is nothing left there to work from.
How big should the blocks be?
You do not pick a number of pixels, and that is on purpose. The blocks are sized against the area you drag, so a small box over an account number and a big box over a face each get blocks that suit them. A fixed pixel size would be far too coarse on one and too fine on the other. Bigger blocks is the coarser of the two settings.
Can I cover more than one thing?
Yes. Drag as many areas as you need — two faces, or an address and a phone number. Each one gets blocks sized against itself. Tap a covered area to take it off again, or use Undo.
Does it work on a phone?
Yes. Drag with your finger over the part you want to cover. The page will not scroll while you are dragging on the picture.
Is my photo uploaded to a server?
No. The work happens on your own device. You can switch your network off after you drop the picture and it will still finish. For a photo you are covering something up in, that is the whole point.
What happens to the details my camera stored?
They are not in the copy you download. A photo carries a hidden block of camera details, and on a phone that often includes the place it was taken. The picture is redrawn to make the result, and the redrawn copy has none of that.
Does the picture stay the same size and format?
The width and height in pixels are unchanged, and the file comes back as the kind of file you dropped. The one exception is a format your browser cannot write at all: then it is saved as a PNG and told to you on the result, never swapped quietly.
Does it add a watermark or need an account?
No watermark, no account, no trial, and no upgrade prompt on the download. The site is free and paid for by ads.
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