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)
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.
Pixelate Image
Apply a pixelation (mosaic) effect to any image with an adjustable block size — perfect for retro looks or quick redactions
Grayscale Image
Convert any image to black-and-white grayscale in the browser with adjustable intensity and instant PNG/JPG export
Desaturate Image
Reduce the saturation of any image with a slider from full color to fully desaturated — runs entirely in your browser
Round Image Corners
Add rounded corners to any image with adjustable radius and transparent background — export as PNG
Flip Image
Mirror any image horizontally or vertically in the browser with a single click and export as PNG or JPG
Rotate Image
Rotate an image by any angle (including free-form degrees) with transparent fill — fast, browser-based
Resize Image
Resize any image to exact pixel dimensions or a percentage, with optional aspect-ratio lock and instant PNG/JPG export
Crop Image
Crop any image to a custom rectangle with precise pixel coordinates or preset aspect ratios — client-side only
Base64 to Image Converter
Paste any Base64 data URL or raw Base64 string, auto-detect the MIME type, and preview plus download the image
Image Invert Colors
Invert colors of an image
Image Metadata Viewer
Inspect image dimensions, alpha support, and basic file metadata
Image Sharpen
Sharpen images