Blur Part of an Image
Select one exact area of an image and blur only that part with no upload required.
Same local editor as the homepage. This page is a deep link for one job, not a separate upload service.
Blur
Softer cover. Raise the strength until text is unreadable.
Pixelate
Mosaic blocks for faces and photos. Larger blocks hide more.
Black Box
Solid cover for names, IDs, and anything that must not be readable.
How to use
How do you redact this image locally?
Load the image in this browser, draw over each sensitive region, and export a PNG. The canvas edit does not upload the file. Paste a screenshot with Ctrl+V or Command-V, or drop a JPG, PNG, or WebP. Undo fixes a box without changing the original on your device.
- 1
Upload your image by clicking the button or dragging the file onto the page.
- 2
Choose your effect: Blur for a frosted look, Pixelate for a mosaic, or Black Box to fully cover the area.
- 3
Click and drag directly on the image to draw a box around the exact part you want to blur.
- 4
Add more blurred regions by drawing additional boxes. Use Undo to fix mistakes.
- 5
Click "Export redacted PNG" to save the final image with the selected parts blurred.
You can also paste a screenshot with Ctrl+V or ⌘V. Undo and Redo fix a box without changing the original file.
Why use this tool
Why does this stay in the browser?
This page is for images that already contain private material. Blur, pixelate, and black box run in your browser, so the file is not sent away to be cleaned. Use a black box for secrets that must not stay readable. Use blur or pixelate only after you have checked that the cover is enough.
Sometimes only a small part of an image is sensitive: a face in the background, a name in a table, a price on a document, or a location on a map. Blurring the whole image would destroy its usefulness.
This tool gives you precise control over exactly which part of an image gets redacted. Draw a box as small or large as you need, in any position, and the effect is applied only within that area.
Questions
What should you know before you export?
The image is processed locally, and export writes a new PNG. Blur is not the same cover as a black box. Paste works with Ctrl+V or Command-V. If your question is about a specific leak, such as a password, a face, or a sidebar, use the guides linked below before you send the file.
Can I blur just one small area of an image?
Yes. You can draw a selection of any size, from a tiny word to a large section. The effect is applied only within the box you draw.
Can I blur a face in a photo?
Yes. Draw a box over any face to blur, pixelate, or black it out. This works on any part of the image, not just text.
Will blurring one part affect the rest of the image?
No. Only the area inside your selection is affected. The rest of the image remains unchanged.
Is the blur reversible after downloading?
No. Once downloaded, the effect is permanently applied to the image. You can undo selections before downloading using the Undo button.
What is the difference between Blur, Pixelate, and Black Box?
Blur creates a smooth frosted-glass effect. Pixelate replaces the area with large colored blocks. Black Box covers with solid black and is the strongest visual redaction.
Can I blur a background instead of the foreground?
Yes. Draw your selection over any region, including the background. The tool does not distinguish between foreground and background elements.
Is there a limit to how many areas I can blur?
No. You can add as many blurred regions as you need. Each drag creates a new independent selection.
Can I resize or move a selection after placing it?
Not directly, but you can click Undo to remove the last selection and redraw it in the correct position.
Will the blurred image have a lower resolution than the original?
No. The downloaded image has the same dimensions and resolution as the original. Only the selected area changes.
Related workflows
Which related tool should you open next?
Every tool on this site is the same local editor with a different starting note. Open a related page when the job is narrower, such as faces, screenshots, or solid black text. You do not upload the image to a second service to switch jobs.
Guides
Which guide matches this job?
Read the guide that matches the mistake you are about to make. Text secrets usually need a black box, not a light blur. Faces, plates, and sidebars need their own pass. Local editing matters most when the file should not be uploaded in order to hide it.
Tool network
Where are the other free tools?
The list below is that same editor under different job names. Pick the name that matches what you need to hide. Processing stays in the browser on every page here, and none of these links is a separate upload form.