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Film Grain Image

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Film Grain Image lets you add reproducible monochrome grain with an adjustable strength and seed. Choose a photo to begin.

Method and calculation

Add reproducible monochrome grain with an adjustable strength and seed.

Inputs and settings

Film Grain Image accepts Grain strength (minimum 0, maximum 100); Random seed (minimum 1, maximum 2147483647).

Worked example

Film Grain Image example — Grain strength: 20; Random seed: 42. Preview instructions: Select a still photo, then use Grain strength: 20; Random seed: 42. The result is a PNG with add reproducible monochrome grain with an adjustable strength and seed.

Output and limitations

A seeded linear-congruential sequence supplies the same luminance perturbation to all three channels of a pixel. Reusing a seed and strength reproduces the grain exactly. Highlights and shadows clip at channel limits, which can change the apparent strength.

Technical references: Canvas pixel manipulation

Film Grain Image FAQs

Film Grain Image applies the following rule to your input: Add reproducible monochrome grain with an adjustable strength and seed. The visible preview shows the resulting image effect.
Film Grain Image has these boundaries: Processes one still image locally. PNG export uses a maximum 4096-pixel source edge; effects may expand the canvas. Start by checking the grain strength field against the units or format shown.
Film Grain Image provides this sample: Select a still photo, then use Grain strength: 20; Random seed: 42. The result is a PNG with add reproducible monochrome grain with an adjustable strength and seed.. The preview can be inspected before saving.

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