🫥 Blur an Image

Hide faces, number plates or addresses, or blur the background of a photo. Everything happens in your browser: the image is never uploaded.

Drop an image here, click to choose one or paste it (Ctrl+V)

JPG, PNG or WebP · processed only on your device

Compare with the original

🎯 What to blur?

Drag on the image to draw a zone. Click a zone to move it, drag its corners to resize it.

✨ Effect

Effect

Blur strength

Block size

Colour

Feather edges

💾 Export

Format

Quality

Same dimensions as the original. Export re-encodes the image: EXIF metadata (camera, date, GPS location) is removed.

🔐 To anonymise sensitive information (face, plate, name, address), prefer large-block pixelation or a solid box: a light blur can sometimes be partly reversed by specialised software.

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About the Image Blur Tool

Before sharing a photo you often need to hide a face, a number plate, a username or an address. This tool blurs, pixelates or covers exactly the zones you choose, or blurs the background to make the subject stand out like a portrait mode. All processing happens in your browser.

How to Use the Tool

Open an image by clicking, dragging and dropping, or pasting (Ctrl+V).
Choose what to blur: the whole image, zones (rectangles or ellipses), brush strokes, or the automatically detected background.
Set the effect: blur, pixelation or solid colour, and how soft the edges are.
Compare with the original using the slider or the “hold” button, then download the image as PNG, JPEG or WebP.

How the Effect Is Computed

Gaussian blur: three successive box-blur passes computed in JavaScript give the same result in every browser, including those without canvas filter support.
Pixelation: the image is split into blocks; each block takes the average colour of its pixels. The original detail is truly destroyed.
Solid box: the zone is replaced by a plain colour; nothing of the original remains.
Feathered edges: the transition goes outwards from the zone, so the inside stays fully hidden.
Full resolution: the preview is scaled down to stay smooth, but the export applies your settings to the original image, at its own size.

Tips

Anonymisation: for text or faces, use large pixel blocks or a black box rather than a light blur.
Leave a margin: draw the zone slightly larger than what you are hiding.
Screenshots: also hide avatars, phone numbers and visible email addresses.
Portrait effect: a photo with a subject well separated from the background works best; adjust feathering if the outline looks too sharp.

Common Mistakes and Limits

A blur that is too light lets text or faces be guessed, and can sometimes be partly reversed.
Forgetting reflections (windows, glasses, screens) showing the same information elsewhere.
Approximate subject detection on fine hair or transparent objects: touch up with zones or the brush.
Very large images: above about 40 megapixels the export is scaled down to stay within browser limits.

Privacy & Security

100% in your browser: the image is never uploaded, not even for subject detection.
Metadata removed: the exported image no longer contains EXIF data (camera model, date, GPS location).
No sign-up, free and usable offline once the page (and the model) have loaded.