Apply Gaussian, Box, or Motion blur to images online — no upload needed. Control blur strength with a live slider, compare before/after, and process multiple images in bulk with ZIP download.
Drag and drop one or more images (JPG, PNG, WebP) into the upload zone, or click to browse. For bulk mode, select multiple files — a thumbnail queue appears so you can see all images before processing.
Select Gaussian (smooth, natural), Box (uniform), or Motion (directional) blur. Use the radius slider to control intensity — from subtle 2px softening to heavy 30px privacy blur. The live canvas preview updates as you drag.
Toggle the Before/After slider on the preview to verify the effect. For single images, click Download. For bulk mode, click Download All to get a ZIP archive of all blurred images in your chosen format (JPG, PNG, or WebP).
Gaussian blur uses a bell-curve weighting where nearby pixels contribute more than distant ones, producing the smoothest, most natural-looking result — ideal for portraits, backgrounds, and subtle effects. Box blur averages all surrounding pixels equally, which is faster but can look slightly harsher. Motion blur applies directional smearing that simulates camera or subject movement, creating a dynamic streak effect useful for artistic photos and speed effects.
For subtle skin retouching or noise reduction, use 1–3px. For soft background effects and depth-of-field simulation, use 5–15px. For privacy masking of faces or license plates, use 15–25px. For making text screenshots completely unreadable or creating strong artistic effects, use 25–50px.
Blurring reduces fine detail in the image, which means the file compresses more efficiently — especially for JPEG, which is based on frequency data. A heavily blurred JPEG is often 30–60% smaller than the original. PNG files benefit less because PNG uses lossless compression. The pixel dimensions stay identical; only the detail content changes.
No. All blur processing happens entirely in your browser using the Canvas API. Your images never leave your device and are not transmitted to any server. This is true even for bulk processing of large files.
The bulk mode supports up to 20 images per batch. Each image is processed sequentially in your browser and added to a ZIP archive for download. For very large images (over 10MB each), processing may take a few seconds per image due to the volume of pixel calculations.
This tool applies blur to the entire image. For selective blurring of specific regions (like a face or license plate), you would need a desktop image editor like GIMP or Photoshop. This whole-image blur is most useful for background blurring, privacy-compliant screenshots, and artistic softening of entire images.
