Blur Image
Click to upload images or drag & drop
Supported formats: JPG, PNG, WEBP, GIF, BMP, AVIF
Drag the slider for an instant preview on every image. You can fine-tune each image individually in the results below.
Blur Image - Free Online Gaussian Blur Tool
Need to blur part of a photo for privacy or add a soft, artistic touch? Our Blur Image tool applies smooth Gaussian blur directly in your browser — nothing is ever uploaded to a server. Drag the slider for an instant live preview, drag the split divider to compare before and after, fine-tune each image individually, and batch process up to 50 images at once. Original JPG, PNG, and WEBP formats are preserved at full resolution when you download.
How to Use
Click the upload area or drag & drop your files. Add up to 50 images at once in JPG, PNG, WEBP, GIF, BMP, or AVIF format.
Drag the global slider to apply blur to every image instantly, or use the slider on each card to fine-tune individually from 0 to 40px. Everything previews live — no waiting.
Switch between Split, Original, and Blurred modes. In Split mode, drag the divider to compare the sharp and blurred versions side by side and dial in the exact strength.
Download a single image or 'Download All' as a ZIP. The original format and full resolution are preserved, so files stay small and sharp.
Key Features
Blur is applied in real time as you drag the slider using GPU-accelerated filters. No processing wait and no separate 'apply' step.
Split view shows the original and blurred versions with a draggable divider, so you can judge the exact blur strength on each image.
Set one blur level for the whole batch, then adjust any individual image with its own slider without affecting the others.
Blur up to 50 images at once and download them together as a single ZIP file, each at its own blur level.
JPG stays JPG and WEBP stays WEBP, keeping file sizes small. Full original resolution is always maintained.
Smooth Gaussian blur from a subtle 1px to a heavy 40px, with clean edges and no dark borders around the image.
All blurring runs locally in your browser with HTML canvas. Your images never leave your device and work offline.
No watermarks, no sign-up, and no limits. Unlimited blurring and unlimited downloads for everyone.
Popular Use Cases
Blur faces, license plates, addresses, or ID numbers before sharing screenshots and photos to keep sensitive information safe.
Add a soft, dreamy look or simulate a shallow depth of field to make your subject stand out from the background.
Create frosted-glass backgrounds for websites, slide decks, and social media banners that keep overlaid text readable.
Censor spoilers, hide content, or produce eye-catching blurred-background posts and stories for any platform.
Generate low-detail blurred previews (LQIP) for faster-loading web pages and smoother image loading transitions.
Obscure graphic, confidential, or NSFW regions of an image so it can be published and shared safely.
Frequently Asked Questions
Are my images uploaded to a server?
No. Blur Image runs entirely in your browser using HTML canvas. Your images are never uploaded anywhere and stay completely on your device.
Will blurring reduce my image quality or resolution?
No. The blur is applied at the original resolution and the file is re-encoded in its source format (JPG/WEBP) or PNG, so quality and dimensions are preserved.
Can the blur be reversed from an exported image?
No tool can fully restore detail removed by blur. For privacy use this is a benefit — once exported, the hidden information cannot be recovered from the file.
How many images can I blur at once?
Up to 50 images per batch. Each image can have its own blur level, and you can download them all together as a single ZIP file.
What's the difference between the global and per-image sliders?
The global slider sets the same blur for every image instantly. Each image card also has its own slider to fine-tune that single image without changing the others.
Is it really free?
Yes — completely free with no watermarks, no account required, and no usage limits on blurring or downloads.
Whether you need to protect privacy, censor sensitive details, or add a soft artistic effect, our Blur Image tool makes it effortless — with instant live preview, a drag-to-compare slider, per-image control, and batch processing. Completely free, 100% private, and running entirely in your browser.