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macOS app image tools retro

Retrolium

Pixel/Nostalgia art generator for macOS

Retrolium hero image
View on App Store

A nostalgia machine for your images.

Do you think high-definition is overrated? Me too, Retrolium help's right this wrong. Drop in your images and pixelate the cr*p out of them.

Filters

Drop your images into Retrolium and let one of four filters work its nostalgic mischief, turning perfectly normal photos into delightfully questionable retro masterpieces

Retrolium pixel art filter example

Pixel Art

Turn images into chunky pixel artwork, then recolour the output using built-in or imported palettes.

Retrolium CRT effect filter example

CRT Effect

Pixelate the source and add a CRT-style treatment for an old-monitor feel.

Retrolium colour by numbers filter example

Colour by Numbers

Create printable colour-by-numbers pixel art for slow, analogue colouring sessions.

Retrolium barcode filter example

Barcode

Build an abstract barcode pattern from the most prominent colour in each image column.

Dithering

Dithering is the ancient art of sprinkling tiny dots everywhere to fake detail. With Retrolium, you can finally overuse it in your images with the enthusiasm of someone who’s just discovered salt.

Retrolium Bayer dithering example

Bayer dithering

A structured ordered-dither look for crisp repeating texture.

Retrolium Floyd-Steinberg dithering example

Floyd-Steinberg dithering

A more organic error-diffusion style for noisy, classic image conversion.

Colour control

Retrolium ships with curated palettes including Aurora, Classic CGA, Classic Gameboy, Commodore 64, Grayscale, Intellivision, LCD, NES, and Teletext.

If the built-in palettes are not enough, import .hex palette files or generate a custom palette from the image itself.

Retrolium built-in colour palettes screen

Built-in palettes

Plenty of palettes to choose from.

Retrolium custom palette generation screen

Generate from image

Generate a custom palette from an image.

Pixel Perfect pen tool

Pixel pen

Oh, you think your better than Retrolium? Fine, fix individual pixels directly.