Apply box blur or pixelation to an entire image or a selected rectangle. Adjust effect strength, preview the result and download it privately in your browser.
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Static PNG, JPEG or WebP · 20 MiB and 40 MP input. Working image is fitted to 2,400 px per side and 4 MP; download uses those working dimensions.
Drag on the original to draw a rectangle, or enter exact working-pixel coordinates below.
Every application starts from the original working image, so effects do not accumulate. For several areas, download the result and reopen it. Blur samples nearby original pixels; pixel blocks are averaged within the selected rectangle.
Apply an effect to see your result.
Ready. Choose an image.
Blur and pixelation are visual effects, not guaranteed secure redaction. Inspect the downloaded image before sharing sensitive details. PNG and WebP preserve processed transparency; JPEG fills it with your background color. Original EXIF and GPS metadata are not copied.
Need monochrome effects? Try Grayscale / Threshold.
Your photo is never uploaded to a server. Image decoding, blur and pixelation, and downloads run locally using Canvas and a disposable browser worker. No accounts, remote APIs or persistent input storage are required. Clear releases the source and result.
No. Blur and pixelation are visual effects and are not guaranteed secure redaction. Sensitive details can remain recognizable or be inferred. Inspect your downloaded result before sharing; use an opaque redaction workflow when irreversible concealment is required.
Choose one static PNG, JPEG or WebP up to 20 MiB, 40 megapixels and 16,384 pixels per side. It is downscaled when needed to a working image within 2,400 pixels per side and 4 MP. Downloads use those working dimensions and are limited to 32 MiB.
Only pixels in the selected rectangle are replaced before encoding. Box blur averages a square neighborhood using nearby original pixels, including outside the selection, with clamped image edges. Pixelation averages blocks inside the selected rectangle. Both use alpha-aware color averaging. JPEG flattens transparency and lossy formats can alter pixels beyond the selection during encoding.
This tool applies one rectangle at a time. Every application starts from the original working image. Download and reopen your result to process more areas, or use Photo Editor for a broader editing workspace. Original EXIF and GPS metadata are not copied; browser color and orientation handling applies.
