Lens Blur
Blur a photo like an out of focus lens. Pick the aperture shape and its lights open into hexagons, octagons or round bokeh.
or browse filesdrop an image here or paste
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Blur a photo like an out of focus lens. Pick the aperture shape and its lights open into hexagons, octagons or round bokeh.
or browse filesdrop an image here or paste
This lens blur works like the Lens Blur filter in a desktop photo editor, in the browser. Drop a photo and the whole picture goes out of focus the way a real lens does it: every point of light spreads into a disc with the shape of the lens aperture, instead of the soft smudge an ordinary blur gives. Night streets, city lights, candles, fairy lights and sun on water are where it shows most - each bright point opens into its own hexagon or circle. Blur radius sets how far out of focus the picture goes, from a slight softening to a background that dissolves completely. Use it for a dreamy wallpaper, a soft backdrop behind text, or to hide a busy scene without losing its colours and lights.
The shape of an out-of-focus light comes from the blades inside the lens. Wide open, most lenses draw a circle; stopped down, the blades show and the lights turn into polygons. Aperture picks the shape: a circle, or a pentagon, hexagon or octagon for a 5, 6 or 8 blade lens. The hexagon is the classic look of an older lens and the default here. Under More options, Blade rotation turns the polygon, so the hexagons can stand on a point or on a flat side.
A photo stores a street lamp as plain white, far dimmer than the real light was, so a plain blur spreads it into a grey patch. Highlight brightness puts that light back before the blur and Highlight threshold decides how bright a pixel must be to count as a light: lower it and more of the picture blooms into shaped discs. The blur itself is worked out in linear light, the way light adds up in a lens. Noise adds a little grain to the blurred part, so it does not look plastic next to a grainy photo. Keep sharp leaves a spot or a band in focus; drag on the picture to move it. For a softer background with round bokeh balls around a subject, see /bokeh-effect/, and for the miniature look with a sharp band across the frame, see /tilt-shift/.
The result downloads at the full size of your photo, as PNG, JPG or WebP. A JPG comes back as a JPG unless you pick another format. On a phone you can share it straight into another app, and on a computer copy it to the clipboard and paste it into a document or chat.
Night shots of a street, a home or a party often show more than the picture is meant to: house numbers, plates, faces in the background. Blurring them here never puts the sharp original on anyone's server. The photo is opened, blurred and saved inside your browser, and nothing is uploaded.
A Gaussian blur averages every pixel with its neighbours in a soft bell curve, so lights fade into dim smudges. A lens blur spreads each point evenly over the shape of the aperture, with a defined edge, and keeps bright lights bright. That is why lights turn into crisp circles or hexagons, the look a camera gives when it is out of focus.
Choose the hexagon under Aperture, raise Blur radius until the lights separate into discs, then raise Highlight brightness. If only the brightest lamps change, lower Highlight threshold so dimmer lights join in too.
Yes. Open More options and set Keep sharp to Spot or Band, then drag on the picture to put it over the subject and use Sharp area size to fit it. Everything outside is blurred through the aperture.
No. The photo never leaves your device: it is decoded, blurred and encoded by your own browser, so a picture of your street, your house or your friends stays with you.