Software with Image Conversion

Simple Pixel Art Editor is a free pixel art editor that runs in the browser, with no install or account needed. It covers sprite drawing with layers, mirror drawing and selections, frame-by-frame animation with onion skin and frame tags, and exports to PNG, GIF and sprite sheets.

It also includes tools for game assets: a tileset editor that generates Wang-16 and blob-47 auto-tile terrains from a base tile and exports Godot 4 TileSet (.tres) and Tiled (.tsx) files, a tilemap painter with an isometric mode, a palette library and an image-to-pixel-art converter.

It suits beginners and hobbyists making sprites and tilesets for small 2D games. The source code is MIT-licensed.

The pixel art editor

Gribble is a pixel art and animation editor that runs in the browser (gribble.app) or as an Android or iPhone app. One account syncs projects between all devices.

Website: gribble.app
Android: Play Store
iOS: App Store

Layers with opacity and 15 blend modes. Frame-by-frame animation with onion skin, frame tags and playback.

Every stroke is recorded, so a finished artwork can be exported as a timelapse.

The community features includes a global gallery with museum frames, a profile page, followers, likes and achievements.

Tools

Brushes, eraser, bucket, dither gradient, color picker, global color picker, ellipse tool, square tool, line tool, square select, lasso select, magic wand, dither, shading, outline, gradient, symmetry, smudge.

Features

Autosave, cloud-storage, timelapse, image/GIF imports, image/video/GIF/code/spritesheet exports, unique 9-patch mode and export, palette lock, alpha lock, themes, pixel perfect, 512x512 grids, palettes, gribble files (.grbl), artwork forking.

Petscii Cola is a free, basic PETSCII editor which can save raster images and Commodore 64-playable files, as well as convert raster images to PETSCII, multicolor or hires Commodore 64 images.

It also includes a choice of Commodore 64 palettes, and a gallery of PETSCII art.

Playscii edits and animates ASCII art with arbitrary character sets, converts images to text art, and has a mode for building simple games.

Divoom is a pixel art editor for Android and iOS devices, letting you create and import pixel art for display on Divoom devices such as the Ditoo speaker or the Pixoo picture frame.

It can be used without these devices just as a portable pixel art program and features the ability to import and resize images, as well as layers and animations.

There is also a text display function with many animated effects and palettes, as well as some audio features such as a keyboard and simple DJ mixer.

Divoom also features a pixel art gallery and community, allowing you to display images from community members on your devices and interact with pixel artists across the globe.

FileToVox converts things that are not voxel models into voxel models: meshes, point clouds, heightmaps, images and Minecraft schematics all become MagicaVoxel files. It runs from the command line, which makes it easy to put in a pipeline.

PicoImageTool is a lightweight, portable application designed for preparing graphics for retro computers, embedded systems, and other hardware with limited display capabilities.

The application provides tools for image resizing, color quantization, palette management, and dithering, allowing modern images to be converted into formats suitable for low-color and indexed graphics systems.

PicoImageTool was originally developed in late 2025 as a small internal utility for Raspberry Pi Pico (hence the name) projects using VGA output.

The initial purpose was to convert PNG images into raw indexed graphics data while maintaining a separate, unified palette.

What began as a simple hand written project-specific tool has since evolved into a more versatile image conversion utility, with an improved interface, additional processing algorithms, and support for retro image formats. Currently its mostly vibe coded using Codex.

It's completely free and requires no installation.

Requirements: .NET 10 Desktop Runtime x64

PixaTool converts images, sprite sheets and video into pixel art, with control over the output resolution, the palette, dithering, outlines and CRT-style effects. It works in batches and from the command line, which makes it useful for putting a whole folder of art through the same treatment.

Users can adjust the output size, reduce images to 8, 16, 32, or 64 colors, choose fixed palettes, enable dithering, and crop the source image. Manual color replacement supports undo and redo. Results can be exported as PNG at 1×, 2×, 4×, or 8× scale.

Pixelmash takes high-resolution artwork - painted, photographed or rendered - and pixelizes it through a stack of layers whose settings stay editable. Change the output resolution or the palette at any point and everything downstream re-renders, which makes it a way to try pixel sizes rather than commit to one.