Creating Legible Text Backdrops & Hero Banners
Apply a medium-to-strong Gaussian blur across busy photography so white or dark headline typography placed on top meets WCAG contrast standards.
Blur Image
Soften busy photographic backgrounds to make overlay text pop, create atmospheric depth-of-field backdrops for social graphics, or obscure sensitive details in screenshots. Adjust the exact blur radius with real-time visual feedback and export at full native resolution without uploading your files.
Drag and drop an image here
JPG, PNG or WebP — processed locally
How to Blur an Image
- 1
Select or drag and drop a JPG, PNG, or WebP image into the browser workspace.
- 2
Drag the Blur Strength slider to set the Gaussian smoothing radius from a subtle 2px softening up to a heavy abstract wash.
- 3
Toggle between Full Image mode (for presentation backdrops and hero banners) or Center Area mode (to blur a targeted focal region).
- 4
Compare the live canvas preview and export your blurred image as PNG, JPG, or WebP.
Practical Use Cases
Redacting Sensitive Data in App Screenshots
Blur out customer email addresses, API keys, account balances, or order numbers before publishing product tutorials and bug reports.
Making 9:16 & 4:5 Padded Backgrounds
Create soft, color-matched blurred background plates to place behind horizontal photos when formatting vertical stories and reels.
Blur Image Features
Continuous Gaussian Radius Control
Dial in the exact smoothing intensity from subtle skin/surface softening to deep frosted-glass effects.
Full-Canvas or Center-Region Modes
Blur the entire composition uniformly or isolate the effect to a configurable central bounding box.
Zero Resolution Loss
Exports retain the exact width and height of your source image without forced downscaling.
100% Client-Side Privacy
All pixel operations run directly inside your browser via HTML5 Canvas. Your images are never uploaded to any remote server.
Real-Time Canvas Preview
Inspect every adjustment immediately on an interactive preview canvas before exporting your final file.
Responsive Mobile & Desktop Controls
Precision sliders, presets, and export buttons adapt cleanly to touchscreens, tablets, and desktop monitors.
Technical Specifications & Best Practices
- ✓For redacting highly confidential text (such as passwords, credit card numbers, or SSNs), use a high blur radius (20px+) or consider solid cropping, as light blurs can sometimes be analyzed.
- ✓Full-image Gaussian blur naturally reduces high-frequency edge detail, which also makes exported JPG and WebP files significantly smaller in byte size.
- ✓All Gaussian convolution happens on your device's GPU/CPU via HTML5 Canvas — your screenshots and photos never touch an external server.
- ✓Blurring is a one-way destructive raster operation on the exported copy; keep your original file saved separately.