When this tool is useful
Soft backgrounds, reduced visual detail, and preview effects where irreversible privacy redaction is not required.
How local processing works
The browser convolves neighboring pixels using the selected blur radius and re-encodes the resulting raster.
How to use it
- Prepare Blur an image: Work from a copy and confirm blur radius, edge treatment, faces or text needing real redaction, dimensions, and output format. Keep the source unchanged.
- Apply Blur an image: Process locally in the browser. The browser convolves neighboring pixels using the selected blur radius and re-encodes the resulting raster.
- Download and verify: Save under a new name. Inspect edges and small text at 100%, confirm dimensions and alpha, and never treat an unreadable preview as proof of redaction.
Important limitations
Blur is not secure redaction: outlines or information may remain inferable, and lost detail cannot be restored from the output.
Verify the downloaded result
Inspect edges and small text at 100%, confirm dimensions and alpha, and never treat an unreadable preview as proof of redaction.
Private by design
Your files stay in this browser. The tool does not upload the source or output to our servers.
Questions and answers
When should I use Blur an image?
Soft backgrounds, reduced visual detail, and preview effects where irreversible privacy redaction is not required.
What does Blur an image change?
The browser convolves neighboring pixels using the selected blur radius and re-encodes the resulting raster.
Which limits and settings matter?
blur radius, edge treatment, faces or text needing real redaction, dimensions, and output format. Blur is not secure redaction: outlines or information may remain inferable, and lost detail cannot be restored from the output.
How do I verify the result?
Inspect edges and small text at 100%, confirm dimensions and alpha, and never treat an unreadable preview as proof of redaction.