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Kordu Tools
Image Tools Runs in browser Privacy Updated 31 Mar 2026

Image Blur & Censor

Blur, pixelate, or black out any region of an image. Redact sensitive info, faces, text, and licence plates.

Effect

20px

Click to upload or drag and drop

PNG, JPG, JPEG, WEBP up to 50MB
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How to use Image Blur & Censor

  1. Upload your image

    Click the upload area or drag and drop a PNG, JPG, or WebP image onto the canvas.

  2. Choose a censor style

    Select Blur (smooth Gaussian), Pixelate (blocky mosaic), or Black (solid fill) from the style options.

  3. Draw censor regions

    Click and drag directly on the image to draw rectangles over the areas you want to censor. Add as many regions as needed.

  4. Adjust or undo

    Use the Undo button to remove the last region if needed. Adjust censor style before drawing additional regions.

  5. Export the censored image

    Click Export to download the censored image. Choose output format (PNG, JPG, WebP, or AVIF) before exporting.

Image Blur & Censor FAQ

Is my image uploaded to a server?
No. All processing happens in your browser using the Canvas API. Your images never leave your device.

What's the difference between blur, pixelate, and black?
Blur applies a Gaussian blur that softens the area. Pixelate replaces the area with large color blocks (mosaic). Black fills the area with solid black. All three effectively obscure the content underneath.

Can the censoring be reversed?
No. Once exported, the original pixel data is permanently replaced by the censor effect. The censored content cannot be recovered from the output file.

Can I censor multiple areas?
Yes. Draw as many rectangles as needed on a single image. Use the Undo button to remove the most recently drawn region.

What's the difference between this and the Face Blur tool?
The Face Blur tool uses AI to automatically detect and blur faces. This tool gives you manual control — draw censor regions anywhere on any content type: text, numbers, faces, objects, or anything else.

Can I censor licence plates?
Yes. Draw a rectangle over any licence plate in the image and apply blur, pixelate, or black fill. This is one of the most common use cases.

What image formats are supported?
Input: PNG, JPG/JPEG, WebP. Output: PNG, JPG, WebP, AVIF. PNG output is recommended for screenshots and documents to avoid compression artefacts around censor regions.

Does this work for censoring text in screenshots?
Yes. Draw regions over any text, code, passwords, email addresses, or other sensitive content in screenshots or document images.

Is there a limit on image size?
Files up to 50MB are supported. Very large images may take a moment to render in the canvas editor.

Background

Manually censor any area of an image with precision rectangle selection. Draw a region over the content you want to hide, choose your censoring style — Gaussian blur (smooth), pixelate (classic mosaic), or solid black fill — and export the result. Draw as many regions as needed on a single image, with undo for the last region if you make a mistake.

Common use cases: redacting personal information in screenshots (names, emails, phone numbers, addresses), censoring licence plates in street photos, blurring financial data in documents, hiding passwords or API keys in tutorial screenshots, anonymizing faces that automated tools miss, and preparing images for publication or legal proceedings.

Unlike the AI Face Blur tool, this tool gives you full manual control — draw your own regions anywhere on the image regardless of content type. Combine both tools for comprehensive privacy coverage: use AI face blur for automatic face detection, then use this tool for any remaining sensitive areas.

All processing runs entirely in your browser using the Canvas API. No data leaves your device. Output is saved as PNG, JPG, WebP, or AVIF.

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