Blur Image
Blur an image. Upload an image, adjust the blur radius, and download a softened result.
Click to upload an image
Your file is processed entirely in your browser
Recommended Settings
Pro Tips
- •Higher blur radius values produce a stronger, softer blur - values above 15px blur most detail beyond recognition
- •A light blur (2-5px) can create a soft background effect while keeping the subject recognizable
- •Heavier blur is useful for obscuring sensitive details, though it isn't a guaranteed privacy measure since some information may still be inferred
- •The whole file is processed locally in your browser - nothing is uploaded anywhere
Most Popular
Most users start with the default setting and fine-tune using the slider while previewing the result
When to Use This Tool
Use this tool to blur an image for background blur effects.
Use this tool to blur an image for privacy & redaction.
Use this tool to blur an image for thumbnail placeholders.
How It Works
Read the uploaded image and decode it using the browser's native image support
Apply a CSS blur filter to the canvas at the selected radius
Draw the filtered result onto a new canvas
Encode the canvas as PNG, ready to preview and download
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Browser native Canvas API for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
How strong is the blur?
The blur radius directly controls the strength - a higher pixel value spreads each pixel's color further into its neighbors, producing a stronger blur.
Can I blur just part of an image?
No, this tool blurs the entire image uniformly. For selective blurring, you'd need an image editor with layer or selection support.
Is this safe for redacting sensitive information?
Use caution - strong blurring can sometimes still be partially reversed or guessed, especially for simple text. For guaranteed redaction, block the area out completely instead.
Is my image uploaded to a server?
No. The entire conversion happens locally in your browser using the Canvas API. Your image never leaves your device.
What format is the output?
The result is downloaded as a PNG file, which preserves any transparency in the original image.