Add halation glow to your photos, free

On film, bright light passes through the emulsion, reflects off the base, and scatters back — glowing outward from highlights, usually with a warm red cast because the anti-halation layer absorbs unevenly. It is why practical lights in film photographs bleed so beautifully.

Open the halation tool →

Free · no sign-up · runs in your browser — your photo is never uploaded.

This tool isolates highlights above a threshold, blurs them, tints them, and blends them back over the image.

How to use it

Open the halation tool and load a photo.
Set Threshold so only genuine highlights glow.
Raise Glow for intensity and Spread for how far it bleeds.
Adjust Hue — warm red is the classic film look.
Export.

Tips

Night scenes with practical lights are the ideal source.
Keep threshold high so midtones do not wash out.
Pairs naturally with film emulation.

FAQ

What is halation in photography?

Halation is the glow around bright highlights caused by light reflecting inside film and scattering back through the emulsion, often with a reddish tint.

How is it different from bloom?

Bloom is a general highlight glow; halation is specifically the warm, film-derived version caused by reflection off the film base.

More effects

Datamosh Pixel Sort VHS Dither Chromatic Aberration Halftone ASCII Film Slit-Scan

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