What Kinds of Effects Does Grainrad Offer?

Grainrad offers three main categories of real-time visual effects: ASCII art conversion, dithering styles, and retro/nostalgic filters. All of them run in the browser at up to 60fps, powered by WebGPU. If you want to apply any of these looks to an image or live source without installing software, this is what the tool covers.

ASCII Art Conversion

This effect turns an image into text-based art, where brightness and detail are represented by characters instead of pixels.

• Character-based rendering — the image is rebuilt from typographic symbols, producing the classic terminal or typewriter look.
• Tunable output — because it is a real-time effect, the conversion updates continuously rather than requiring a one-off export.
• Best for — stylized portraits, album art, thumbnails, or any image where a "printed text" aesthetic fits.

When to choose it

Pick ASCII conversion when the goal is a recognizable but clearly digital, low-fidelity look. It reads best on high-contrast images, since character density carries the shading.

Dithering Styles

Dithering recreates gradients and shading using limited patterns of dots or pixels, the same technique early computer and print graphics relied on.

• Pattern-based shading — smooth areas become textured dot or pixel patterns instead of continuous color.
• Retro-computing feel — the result resembles old 1-bit or limited-palette displays.
• Best for — giving modern images an intentionally "old hardware" texture, or unifying an image into a restricted palette.

When to choose it

Use dithering when you want texture and a limited-color aesthetic rather than clean gradients. It works well on photos that you want to look like they came off vintage hardware.

Retro / Nostalgic Effects

This is the broader category covering the vintage, lo-fi, and "old screen" looks that Grainrad is built around.

• Nostalgic visual style — effects evoke older display and imaging technology.
• Real-time preview — you see the effect applied live, so you can judge the look before committing.
• Best for — content that needs a deliberate throwback or analog-era mood.

How the Effects Are Delivered

The key practical point: because these run through WebGPU at 60fps, the effects are interactive. You are not waiting on a slow batch render to see the result — the preview updates as you adjust.

Choosing Between Them

• Want text made of characters? → ASCII conversion.
• Want dot/pixel patterns and limited shading? → Dithering.
• Want a general old-school screen or analog mood? → Retro effects.

These categories often overlap in practice, so the fastest way to decide is to apply each to the same image and compare the live preview. Since everything renders in real time, testing all three takes only moments.