Software with Onion Skinning

Aseprite is a pixel art editor built around sprite work: an indexed-color workflow, onion skinning and a timeline for animation, tilemap layers, custom brushes, and export straight to sprite sheets. Extensions and Lua scripts add anything it lacks. It is the editor most Lospec artists reach for first.

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.

Novaboard runs in the browser and as a desktop app, with layers, animation and effects.

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.

Blockbench is a free and open source editor for low-poly models with pixel art textures. Models can be exported into standard 3D formats, to be shared, rendered, 3D-printed, or used in game engines or games line Minecraft. Modeling, UV mapping, texturing with pixel-art tools, rigging and animating, can all be done in the program.

Blockbench has a clean and beginner friendly interface, but also offers lots of customization and advanced features for experienced 3D artists. Plugins can extend the functionality of the program even further.

Pixelorama is a full featured free editor: layers, animation with onion skinning, tile mode, palettes, and an active development pace. It runs on every desktop platform and in the browser.

Pixquare is a pixel art editor for iPad and iPhone with a deliberately dense feature set: layers, animation, palettes, tiled preview and pressure-aware Apple Pencil drawing. It reads and writes the formats desktop editors use, so a drawing started on a tablet finishes anywhere.

Resprite is a pixel art and animation editor for iOS, Android, Windows and macOS, built around a touch interface without losing the tools a desktop editor has: pixel-perfect lines, alpha lock, dithering patterns, custom brushes, gradients and symmetry. It imports and exports GIF, sprite sheets, PSD and APNG.

Pixaki is a full pixel art studio for the iPad, built for drawing with the Apple Pencil rather than a mouse. It has layers, a proper animation timeline with onion skinning, palette tools and tiled preview, and exports sprite sheets, GIFs and layered files.

GraphicsGale has been in use since 2005 and excels at animation, with onion skinning and frame-by-frame preview. It was made freeware in 2017. The interface shows its age but the tools are precise.

LibreSprite continues the last GPL version of Aseprite as a community project. It keeps the familiar layers, animation timeline and palette tools, and adds its own scripting and a browser build.

Pixly is a game-oriented pixel art and animation editor for Android, with the gestures worked out for a touchscreen: two fingers to pan and zoom, three to change the brush size. It covers layers, onion-skinned animation, symmetry, real-time tiling and cloud sync. Its own site is still up and still points at Google Play as the only way to get it, but that listing no longer resolves.

Core Editing & Selection Tools

Drawing Tools: Includes Brush, Eraser, Flood-fill, Gradient, Line, Rectangle, Ellipse, and Pipette.

Pixel-Perfect Algorithm: Applies to drawing tools to ensure single-pixel-wide lines without unwanted extra pixels.

Selection: Supports copying, cutting, moving, pasting, rotating, and flipping selected image sections.

Layers: Supports layer management for organizing artwork elements.

Animation & Reference

Frame-by-Frame Animation: Includes dedicated tools for creating frame-based animations.

Onion Skinning: Displays overlay previews of preceding frames relative to the active frame.

Reference Images: Loads gallery images onto the canvas for comparison while drawing.

Color Palettes

Preset Palettes: Includes built-in palettes based on hardware profiles like Atari 2600, NES, and Game Boy.

Custom & Imported Palettes: Supports custom color palettes as well as importing palettes from Lospec.

Import, Export & Compatibility

File Import: Opens Aseprite project files (.ase, .aseprite) alongside standard raster formats (.png, .jpeg, .gif).

Export & Upscaling: Exports animations and images to formats including MP4 video, standard raster formats, or local storage/social sharing, with upscaling options to prevent interpolation blur on standard displays.

Pixel Studio is a pixel art editor that runs on desktop, phone and tablet with the same project open on all of them. It covers layers, animation with onion skinning, tilesets and palettes, and reads and writes Aseprite files, which makes it a practical way to keep drawing away from a desk.

It covers sprite drawing with pixel-perfect lines, symmetry and dithering, layers, frame-by-frame animation with onion skinning, indexed color palettes, lighting, tilesets and sprite sheet export.

No account is required. It can be installed as a web app and used offline, and files stay on the user's computer. The interface is available in English, Spanish and French.

Drawing tools include Pencil and Eraser with Pixel-Perfect options, palette-step shading, fills, gradients and dithering. The editor also provides selections, raster transformations and a workspace with docked panels or freely arranged floating modules.

Export options include PNG, JPEG, animated GIF, sprite sheets and PNG sequences. Photoshop PSD/PSB and Aseprite ASE/ASEPRITE import and export support subsets of those formats. Editable paths and linked fills are rasterized in external copies, while native projects keep them editable. Tilemaps are not supported.

Pixelithra is a portable Windows x64 application with interfaces in English, French and Japanese. A one-time purchase provides a permanent license with all future updates included.

The free 14-day trial includes all tools, saving and export, and works offline without an account. Purchased licenses work offline after initial itch.io activation.

Students can request a free permanent license for personal or commercial projects, with all tools and future updates included. The license remains valid after their studies.

Pixen is a pixel art and animation editor built as a proper Mac application, with the same project openable on an iPhone or iPad. It is aimed at low-resolution bitmaps and 8-bit sprites: layers, palettes, an animation timeline and the system features a native app gets, like versions and autosave.

With a free account, finished pieces can be published to a community gallery, entered in weekly challenges or drawn on together in live rooms. A built-in Academy teaches pixel-art basics in short step-by-step lessons, which makes it a fit for beginners. The interface is available in 10 languages.

Features include layers, frame-by-frame animation, onion skinning, indexed colour, custom palettes, selections and PNG export. The free version supports canvases up to 128 × 128 pixels, three layers and six animation frames.

An optional Pro upgrade increases these limits and adds workflows including editable Aseprite import and export, sprite sheets, animated GIF and WebP export, seamless tiled drawing, symmetry and dithering.