Pixelation can sometimes be reversed
Small blocks over large text can still be guessed or AI-super-resolved.
Fix: Use a large block size (24px+) or switch to a solid fill in an image editor for high-stakes redaction.
Censor Image (Blur & Pixelate)
Redact sensitive areas of an image by drawing a rectangle and applying pixelate or blur — everything stays in your browser
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What is Censor Image (Blur & Pixelate)
Written by Giorgos Kostas. Last reviewed:
Image censoring hides sensitive content (faces, license plates, personal data) by applying a destructive filter — typically blur or pixelation — to a specific region of the image.
Censor Image lets you pick a rectangular region, choose pixelate or blur, dial in the strength, and export the redacted PNG or JPG directly.
Why use it
- Protect identities before publishing a screenshot, demo, or press photo.
- Quickly redact PII in bug reports without leaving the browser.
- Choose pixelate for a retro aesthetic or blur for a soft redaction.
- 100% client-side — the original image never leaves your machine.
Features
- Pixelate or blur modes
- Adjustable strength
- Precise X/Y/Width/Height input
- Live preview
- PNG and JPG export
- Redaction applied locally in your browser
How to use Censor Image (Blur & Pixelate)
- Upload. Drop the image that contains the sensitive region.
- Position the censor box. Set X, Y, Width, and Height over the region to hide.
- Pick a mode. Choose Pixelate or Blur and adjust the strength.
- Export. Click Download to save the censored PNG or JPG.
Example (before/after)
Screenshot with PII
bug-report.png (account id and email visible in a sidebar)
Censored output
bug-report-censored.png (sidebar region pixelated at block size 16, surrounding content untouched)
Common errors
Censor box misaligned
Typing pixel coordinates is fiddly on wide images.
Fix: Start with the default centered box, preview the result, and tweak X/Y/Width/Height in small increments.
FAQ
Is pixelation or blur more secure?
Neither is fully reversible when applied strongly, but blur with a large radius tends to be harder for AI to recover than fine-grained pixelation.
Can I censor multiple regions?
In the current version, one region at a time. To censor multiple areas, export between each pass and re-upload.
Is my image uploaded?
No. Everything runs in your browser using the Canvas API.
Does it support transparent PNGs?
Yes — PNG export preserves transparency outside the censored region.
Related tools
Related image tools: You can also browse the full Image Tools category for more options.
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