Free Online Image Blur Tool
Obscure sensitive data and add artistic effects in your browser. Protect privacy instantly without installing software.
Upload an image to start
Drag and drop or click to select an image file
What this tool does
This tool blurs specific areas of an image or the entire photo. Upload a file, select the area to obscure, adjust the blur intensity, and download. Use it to hide sensitive info or add artistic depth-of-field effects. Everything runs in your browser.
How to use it
1. Upload your image
Drag a file into the workspace or click to browse. The image loads instantly into your browser.
2. Select the area to blur
Choose whether to blur the entire image or a specific region. For selective blur, drag to create a rectangle over the area you want to obscure.
3. Adjust intensity and download
Move the slider to control blur strength. Watch the preview update in real-time, then download when the sensitive info is hidden or the effect looks right.
When you'd use this
Hiding private info in troubleshooting screenshots
Asking for tech help online often means sharing screenshots that contain email addresses or browser tabs. Blur out the private parts before posting to public forums.
Obscuring faces to protect privacy
Posting group event photos where some people didn't consent to be pictured? Blur their faces to respect their privacy while still sharing the memory.
Censoring license plates in car photos
Automotive enthusiasts who post vehicle photos often forget about visible license plates. Blurring them prevents malicious tracking or identity scraping.
Creating artistic background blur
Great portrait, messy background? Applying blur outside the main subject simulates expensive camera lens depth-of-field, forcing attention to your subject.
Anonymizing financial documents
Need to send a bank statement as proof but want to hide account numbers and balances? Blur out the sensitive fields before sharing.
What to know before using it
Blur intensity determines readability
For hiding text, increase blur until characters are completely unreadable. Light blur might obscure at a glance but still be decipherable if someone zooms in.
Pixelate vs Gaussian blur
Gaussian blur creates a smooth, soft effect that looks natural for artistic use. Pixelation creates blocky squares that clearly signal "this was censored" - better for privacy protection.
The rest of your image stays sharp
Only the selected area gets blurred. The rest of your photo maintains its original quality and resolution.
Blur is permanent after download
Once you download the blurred image, the effect is baked into the pixels. Keep an unblurred master copy saved separately in case you need it later.
FAQs
Is it safe to blur sensitive documents here?
Yes. The tool runs entirely in your browser. Bank statements, IDs, and other sensitive files never leave your computer.
Does blurring reduce overall image quality?
Only in the blurred area itself. The rest of your image stays at full quality. The blurred region is intentionally obscured, not degraded.
How much blur do I need to hide text?
Start low and increase until characters are completely unreadable. For sensitive info, err on the side of more blur - you should not be able to make out any letter shapes.
Can I undo the blur if I make a mistake?
Yes, while working in the tool you can adjust or remove the blur before downloading. Your original file stays untouched on your device.
What formats are supported?
JPG, PNG, and WebP all work. The output format matches your input unless you specify otherwise.
Is there a limit on how many images I can blur?
No. Process as many images as you need, one at a time. No signup, no quotas, no watermarks.