Photo Censor
Draw boxes on an image to pixelate, blur, or black them out - all in your browser.
Click and drag on the image to draw a region. Use the × on a region to delete it.
Each region keeps the mode and strength that were active when you drew it; later setting changes do not affect earlier regions.
You have reached the limit of 40 regions. Remove one before adding another.
That file could not be read. Choose a valid image such as PNG, JPEG, WebP or GIF.
About Photo Censor
A pixelated region is only as safe as its block size: on small text in a known font, 4 or 6 pixel blocks can be brute-forced back into readable characters. The more common mistake is drawing a black rectangle as a layer in an editor and shipping a file where the original pixels still sit underneath. This tool bakes each region straight into the exported pixels, and does the whole job inside your browser with no upload.
How to use Photo Censor
- 1
Drop an image onto the panel or open it with the choose button; the file is read only into browser memory.
- 2
Pick a censor mode - pixelate, blur or solid black - and adjust the block size slider (4 to 80) or blur radius slider (2 to 40). Solid mode has no slider.
- 3
Click and drag on the image to draw a region. Each region locks in the mode and strength active at that moment, and you can add up to 40 of them.
- 4
Fix mistakes with the × on a region, the Undo button, or Ctrl+Z; Clear all returns the image to its untouched state.
- 5
Choose PNG or JPEG as the output format and press download to save the file with the censoring already baked into the pixels.
Frequently asked questions
Is my photo uploaded to your server?
No. The file is read with FileReader, processed on a canvas element, and the result is downloaded from the same page. No request carrying the image is ever sent, so the tool keeps working with the network disconnected.
Can the pixelation be undone?
Not from the exported file - the original data is discarded and no copy is embedded. But irreversible is not the same as unguessable: with small blocks and predictable content such as a card number or a licence plate, an attacker can render candidates and match them against the blocks. For sensitive data use a large block size or solid black.
Why can I not move or resize a region after drawing it?
Regions are not editable - you can only delete them or undo and redraw. There is also a hard limit of 40 regions, and images larger than about 24 megapixels are scaled down before processing so the browser does not run out of memory; the new dimensions are shown below the image when that happens.
Should I export PNG or JPEG?
PNG is lossless and keeps transparency. JPEG is smaller but flattens any transparent background to white and re-encodes at 92% quality. Either way the image is rebuilt from a canvas, so original metadata such as EXIF and GPS coordinates does not survive into the exported file.