All tools › Hide something
Pixelate an area
Blocks of one colour, with a warning when there are enough of them to read.
It runs entirely in this browser tab: the file you open is never uploaded, and the result is re-encoded from pixels, so its metadata does not come with it.
Settings
- Block size
- Larger blocks hide more; the result says when there are enough to read. A number from 2 to 200.
- Area
- Choices: The whole picture, Part of it.
- Units
- A share survives the picture being resized; pixels do not. Choices: Per cent, Pixels.
- From the left
- A number from 0 to 10000.
- From the top
- A number from 0 to 10000.
- Width
- A number from 1 to 10000.
- Height
- A number from 1 to 10000.
- Save as
- Only PNG keeps transparency. JPEG fills it in. Choices: PNG, JPEG.
- Quality
- Below about seventy the blocking starts to show. A number from 1 to 100.
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Is my picture uploaded anywhere?
- No. The whole application is carried as WebAssembly and runs on your own device. There is no server to send anything to, and none of these tools makes a network request while it works — not even the one that reads a photograph's location, which is why it gives coordinates rather than drawing a map.
- What happens to the EXIF data?
- It is gone. Every result here is written from pixels, so the camera, the date, the location and the copyright field are all dropped. That is the point of the location tool and a surprise to anybody who wanted the copyright kept, which is why every result says so.
- Is a blur enough to hide something?
- Usually not. A blur and a pixelation are averages of what was there, and both have been reversed in published work by blurring candidate images the same way and comparing. Only a solid fill or noise removes the information, and the tools say which method you chose.
- Why is the example a test pattern rather than a photograph?
- Because this workspace ships no image files anywhere, and a base64 photograph pasted into a source file would be one wearing a disguise. The patterns are drawn from nothing when the button is pressed.
Other tools for hide something
Censor an area
Four methods, and only two of them actually remove what was underneath.
Blur part of it
A blur measured against the size of what it hides, because a weak one can be undone.
All thirty-five tools