Free Online Image Blur Tool
Blur sensitive information in any screenshot or image before sharing. Hide emails, pricing, personal data, and credentials in seconds. No signup required.
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How to blur images with Supademo
1. Upload your image
Upload any screenshot or image from your device, or use the Chrome extension to capture directly.
2. Select the area to blur
Click the Redact tool and draw a rectangle over the sensitive information you want to hide.
3. Adjust blur intensity
Use the slider to control how much blur is applied. From a light defocus to a full redaction.
4. Download or copy
Export your blurred image as PNG/JPEG or copy it to the clipboard. Share safely.
Why we built a free image blur tool
“We built the blur tool because sharing unredacted screenshots is a real security risk. Teams share screenshots in Slack, docs, and tickets all day. One leaked API key or customer email can be a compliance issue. This tool makes redaction instant.”
“The blur runs entirely in your browser. No image data ever touches our servers unless you explicitly create a shareable link. That was a non-negotiable design decision for us.”
Frequently asked questions
Common questions about our free image blur tool.
How do I blur an image online for free?
Upload your screenshot or image to Supademo's free blur tool, select the area you want to blur, adjust the blur intensity, and download the result. No signup or software installation needed.
Can I blur specific parts of an image?
Yes. Select any rectangular region and apply blur to just that area. Perfect for hiding emails, API keys, pricing, personal data, or anything sensitive before sharing.
Is the image blur tool free?
Completely free. No account, no watermark, no limits. Supademo's image blur tool runs entirely in your browser. See all free tools.
What file formats are supported?
Upload PNG or JPEG images. Download your blurred image as PNG or JPEG.
Is my data secure when using the blur tool?
Yes. Images are processed locally in your browser and are never uploaded to our servers. Supademo is SOC 2 Type II compliant.
Can I adjust the blur intensity?
Yes. Use the blur intensity slider to control how strong the blur effect is, from a subtle defocus to a complete redaction.
How is this different from Photoshop or Canva blur?
Supademo's blur tool is purpose-built for redacting screenshots. No login, no learning curve, no subscription. Upload, blur, download. It also integrates with Supademo's screenshot editor for annotations and backgrounds.
Blur Sensitive Data in Screenshots Instantly
Protect sensitive information before sharing screenshots. Free, browser-based, no account needed.