Blur Image Online
Blur entire images or select specific regions to hide. Gaussian blur or pixelation with adjustable intensity. Free, no signup.
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How to Blur an Image
1
Upload Image
Drag and drop your image (JPG, PNG, WebP, GIF, TIFF, or others) into the tool above, or click to browse. Up to 100 MB.
2
Select & Blur
Draw rectangles on the areas you want to blur, or switch to Full Image mode. Choose between Gaussian blur and pixelation, then adjust the intensity.
3
Download
Click Apply & Download and get your blurred image. The original format and resolution are preserved.
Blur Types Explained
| Type | How It Works | Best For |
|---|---|---|
| Gaussian Blur | Applies a smooth, natural-looking blur by averaging neighboring pixels with a weighted kernel. Higher intensity means a wider blur radius and more smoothing. | Soft background blur, depth-of-field effects, hiding sensitive text while maintaining a clean look. The standard choice for most use cases. |
| Pixelate | Replaces pixel groups with a single average color, creating a blocky, mosaic-like effect. Higher intensity means larger blocks and less recognizable detail. | Hiding faces, license plates, or identifiable information in screenshots. The pixelation effect is unmistakable — viewers know content has been deliberately obscured. |
Common Use Cases
- Privacy protection — blur faces, names, email addresses, phone numbers, or other personal information before sharing images publicly. Essential for GDPR compliance and social media etiquette.
- Screenshot redaction — hide sensitive data in screenshots before sharing with colleagues, posting in bug reports, or including in documentation. Pixelation makes it obvious that information was intentionally hidden.
- Document censoring — redact specific fields in scanned documents, invoices, or contracts without editing the entire file. Select only the regions that need to be hidden.
- Background blur — apply a full-image Gaussian blur to create soft backgrounds for presentations, social media posts, or product shots.
- License plates & addresses — when sharing photos of cars, houses, or street views, blur identifying information like license plates and house numbers.
How Region Selection Works
The region selector works like a simple drawing tool. Here is how to use it:
- Draw a rectangle — click and drag anywhere on the image to create a blur region. The blur preview updates in real time so you can see exactly what the result will look like.
- Move a region — click inside an existing region and drag to reposition it. The cursor changes to a move icon when hovering over a region.
- Resize a region — grab any of the 8 handles (corners and edge midpoints) to resize the region. The cursor changes to a resize arrow when hovering over a handle.
- Delete a region — click the red X button at the top-right corner of any region to remove it.
- Undo — press Ctrl+Z (or Cmd+Z on Mac) to remove the last drawn region.
You can create as many regions as needed. Each region is blurred independently with the same blur type and intensity settings.
Frequently Asked Questions
The tool supports JPG/JPEG, PNG, WebP, GIF, BMP, TIFF, HEIC, HEIF, and AVIF images up to 100 MB. The output format matches your input — a JPG input produces a blurred JPG, a PNG produces a blurred PNG, and so on.
Gaussian blur creates a smooth, natural-looking blur by blending neighboring pixels together. Pixelation replaces groups of pixels with a single average color, creating a mosaic-like blocky effect. Gaussian blur is generally preferred for backgrounds and soft effects, while pixelation is better for clearly indicating that content has been censored (like faces or license plates).
Yes. In Select Regions mode, you can draw as many rectangular regions as needed. Each region is blurred with the same type and intensity. You can move, resize, or delete individual regions before applying. Use Ctrl+Z to undo the last drawn region.
The canvas preview is a close approximation showing blur placement and relative intensity on a scaled-down version of your image. The final output is processed server-side at full original resolution using ImageMagick, so the blur quality is higher and the result may appear slightly different from the browser preview, especially at very high intensity values.
Yes, completely free. No signup, no limits, no branding added. All file transfers are encrypted via 256-bit SSL (HTTPS). Your uploaded images are automatically deleted from our servers within 2 hours. We do not view, share, or store your files beyond the processing window.