How to Blur a Photo in Your Browser

Blur a photo in four steps

A short workflow avoids the two usual mistakes: blurring too lightly and saving before you inspect the edges. PixDazzle runs in the browser with no account, and the image stays on your device.

• Open Blur Image and add a JPG, PNG, or WebP from your device.
• Set Blur amount, or start from the Soft, Strong, or Sharp center preset.
• For a blurred background, see the Sharp center workflow in the next section.
• Download and reopen the file at the size people will see before you share it.

When not to rely on blur for privacy

Blur works for casual concealment, but a light blur is not a guarantee that sensitive information stays gone. Deconvolution can partly sharpen a mild blur, which is why the pixelate-vs-blur guide recommends heavy settings or removal for text and faces.

• Use a stronger setting when a legal document, payment detail, or private message appears in the frame.
• Cover a wider area when a face, address, plate, or screen detail still reads after blurring.
• Check reflections, shadows, and duplicate copies of the same information elsewhere in the photo.
• Keep the original private and inspect the export before posting.

How to blur the background of a photo

Blur Image can blur the background while an oval in the middle stays sharp. Choose the Sharp center preset, which sets Blur amount to about 45, Keep sharp to Center, and Sharp area size to about 50%. Slide Sharp area size between 20% and 90% to widen or tighten that oval, and raise or lower Blur amount (0 to 100) until the outer blur looks like a soft background.

This is not subject detection or AI masking. Hair, shoulders, and irregular outlines can soften along the oval edge, and a true portrait-mode cutout needs layer software with a manual mask or a dedicated portrait tool. The change-photo-background guide explains what PixDazzle does and does not cover for replacing a backdrop.

For an even soft look across the whole frame, use Soft or Strong, or set Keep sharp to Nothing. PixDazzle does not offer brush or rectangle selection on Blur Image yet. To hide one small region, crop it out, cover it before export, or use Pixelate Image at a heavy block count. See pixelate-vs-blur when you are choosing blocks over softness.

• 1. Crop first with Crop Image when the subject is off-center, so the face or product sits near the middle of the frame.
• 2. Open Blur Image, add the photo, and tap Sharp center (or set Keep sharp to Center yourself).
• 3. Widen Sharp area size until the subject fits inside the sharp oval and the edges read as background blur.
• 4. Adjust Blur amount if you need more or less softness, then download and inspect hair, shoulders, and reflections at full size.

Set blur strength for portraits and privacy

Start with the lowest amount that achieves the goal. Background blur with Sharp center usually looks natural at the preset strength (about 45). For privacy on the whole frame, raise the amount until text, facial features, and identifying shapes fail a recognition check at 100% zoom.

In Blur Image, strength scales with resolution. At 100, the radius is 6% of the longest edge, so a setting that looks right in the preview should match the download.

Check the result before you export

Saving is the last step, not the quality check. Compare the full image with the original, then inspect hair, shoulders, object edges, shadows, and reflections.

• Confirm every face, word, number, and screen you meant to hide is covered.
• Look for sharp fragments along edges and in reflections.
• Pick JPG, PNG, or WebP to match where the file is going.
• Open the downloaded copy once more before you send or post it.