Image Mosaic / Blur

When to use?

Use it before posting images to blur areas you should not reveal — names, emails, order numbers, addresses, faces, plate numbers. It makes a result PNG in the browser without uploading the original.

How to use

• Select an image.
• Choose whole-image or specific-rectangle blur mode.
• Adjust blur strength, X/Y coordinates, and width/height.
• Check the preview, then save the result image.

Input Explanation

In area mode, enter X, Y coordinates and width/height in pixels. In whole mode, adjust only the blur strength.

Calculation Basis

It draws the image on browser Canvas and applies a blur(px) filter. Area mode redraws only the clipped rectangle, keeping the rest of the original.

Usage Examples

• Protect personal info - Blur sensitive info in images — names, emails, contacts, addresses, order numbers — before sharing.
• Hide faces/plate numbers - Blur a specific face, plate number, or revealing sign by selecting an area.
• Prepare screenshots to share - Hide account names or internal data in app/receipt/admin captures for a shareable image.
• Blur the whole background - Blur an entire document or photo so details cannot be read.

Examples

• Blur only the name and ID area in a contract capture by X/Y coordinates
• Blur only the address/contact/tracking-number area in an order screenshot
• Blur only a specific face in an event photo by selecting an area

Cautions

• It processes via browser canvas, so original metadata (EXIF) may be lost or transparent areas may change color.
• Extremely high-resolution large files may fail to convert due to browser image-decoding limits.

Guides

Choosing blur vs. mosaic

Blur looks natural but at low strength the original shape can remain. For sensitive text like IDs, addresses, and order numbers, raise the strength or select a wide enough area.

Tips for selecting areas

Select a bit wider than the target so letter edges or shadows do not remain. If several pieces of info are close, one large rectangle is safer than separate areas.

Keep the original safe

The tool makes a new PNG and does not modify the original. When sharing, confirm you picked the blurred result and did not attach the original by mistake.

Browser processing

Images are processed on browser Canvas with no server upload. You can produce results without transferring files, even for internal screens or PII screenshots.

FAQ

Does the original file change?

No. It generates a new PNG file in the browser.

Is the photo uploaded to a server?

No. As a tool for sensitive info, blurring runs only in the browser and the photo is not sent out.

Can blurred info be restored?

Weak blur can leave shapes visible, so apply strong blur to sensitive info and check the result.

Can I adjust the blur strength?

Yes, from light blur to a strong mosaic where info is unreadable.

Can I blur only part of the image?

Yes. In area mode, specify X/Y coordinates and size to blur only that rectangle.

Related Tools

• Image Watermark - Add a text or logo watermark over an image with adjustable position and opacity.
• Image Pixelate Tool - Process an image in blocks for a pixel-art look and save as PNG.
• Image Cropper - Enter pixel coordinates to crop just the area you need, in the browser.
• Image Metadata Remover - Make a new image with original metadata like EXIF removed via Canvas re-encoding.
• Image Resizer - Resize multiple images in the browser with aspect ratio kept, no server upload.
• Image Rotate / Flip - Rotate images in 90-degree steps or flip them horizontally/vertically.