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Blur Image — Blur Part of an Image or the Whole Photo

Blur an image online: blur the whole photo or drag to blur only selected areas, set the strength and download PNG or JPG. Runs in your browser, no upload.

Convert in your browser · No sign-up

One static JPG, PNG, WebP or AVIF · up to 20 MB and 24 megapixels

How to use

  1. Choose a JPG, PNG, WebP or AVIF image.
  2. Blur the whole image, or switch to selected areas and drag over each part you want to blur. Set the strength and output format.
  3. Select Blur image, check the result and download it.

Example

A 1600 × 900 screenshot with an email address in one corner → select that rectangle, strength 60 → the same screenshot with only the email blurred, saved as PNG.

Details and limitations

Strength scales with image size: 100 is a Gaussian blur radius (standard deviation) of 5% of the longest side. Browsers that do not support canvas blur filters, such as some Safari versions, use a built-in box-blur fallback that looks very similar.

Blur can be partially reversible, especially at low strength or on small text. For sensitive details, use a strong blur or the image mosaic tool. Your image is processed in your browser and never uploaded.

FAQ

How do I blur only part of an image?

Choose Selected areas, then drag a rectangle over each part you want to blur, such as faces, names or license plates. You can also enter an area's position and size in pixels. Everything outside the areas stays sharp.

Is blurring safe for hiding passwords or text?

Not always. A light blur on small text can sometimes be read or reconstructed. Use the highest strength, or cover the text with the image mosaic tool before sharing a screenshot.

Does blurring reduce image quality?

Only the blurred areas change and the pixel size stays the same. PNG output is lossless; JPG output is saved at quality 92% and is smaller.

Format references

Tool page updated: