Make patterns, dithers and pixel art from any image

Beautiful results in seconds, free, and private: nothing is uploaded.

Cross-stitch and bead charts, 23-algorithm dithering, riso separations, film looks, ASCII art and image compressors. Every image on this page was made with these tools.

Try the dither studioBrowse all tools ↓
Diamond duotone made with GridloomRiso separation made with GridloomCross-stitch chart made with GridloomFilm look made with GridloomColor ASCII made with GridloomNewsprint halftone made with Gridloom

All tools

Cross-stitch pattern maker

Photo → DMC chart PDF with symbols & stitch counts.

Perler bead pattern maker

Image → 29×29 pegboard pages with bead counts.

Dither studio

23 algorithms, palette editor, layers, curves, SVG & GIF.

Halftone generator

Newsprint dots for print, zines and DTF.

E-ink image converter

Dither to B/W, tri-color or 7-color e-paper palettes.

Riso & CMYK separation

Per-ink layers with their own dither, angle and offsets.

Duotone gradient-map dither

Diamond, halftone or blue-noise duotones and tritones.

Film filter & grain effect

Portra, Ektar, Tri-X & CineStill-style looks with grain, halation and light leaks.

ASCII art generator

Custom charsets, color, copy & PNG.

Braille art generator

High-res Unicode dot art for chat.

Image compressor

Compress JPG, PNG & WebP to an exact size — 20KB, 100KB, 1MB, Discord.

YouTube thumbnail resizer

16:9 at 3840×2160, 1920×1080 or 1280×720, under 2 MB, with a feed preview.

YouTube banner resizer

2560×1440 and 2048×1152 under 6 MB, text kept in the safe area.

Favicon generator

Logo or letter → favicon.ico, Apple touch icon, 192/512 manifest icons and the HTML.

App icon generator

One logo → iOS 1024 AppIcon, Android adaptive icon + mipmaps, 512 px Play Store icon.

Telegram sticker resizer

Any image → 512 px PNG/WEBP sticker + 100×100 emoji, with white outline.