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Spritesheet Generator is a free browser-based tool for building sprite sheets for game development. Users upload sprite images or a JSON atlas, arrange frames in a grid, preview animations at adjustable frame rates, and export as PNG, JSON, ZIP or GIF. It includes a pixel editor, recolor controls and an atlas packer. The site states images stay on the user's machine and the tool works offline.
A GitHub repository for generating retro pixel game characters with generative adversarial networks. It includes the TinyHero dataset of 64x64 pixel characters generated from the Universal LPC spritesheet, with 3648 images. Notebooks cover a DCGAN based on the PyTorch tutorial, a conditional DCGAN and a deep convolutional autoencoder. Art is dual licensed under GPL 3.0 and CC-BY-SA 3.0.
Nasu is a spritesheet editor for creating 8-bit fonts and sprites. It was built during production of the Famicom version of the card game donsol. It is available as a downloadable rom for Windows, macOS, Linux and Android, and for the uxn computer.
Piskel is a free, open-source web-based editor for spriting and pixel art. It creates pixel art, game sprites and animated GIFs, and is best used in a desktop browser in landscape orientation. The tools include a live animation preview and export to GIF or PNG, including spritesheets. A separate child-friendly version, Piskel for Kids, is available. Free desktop and offline applications exist for Windows, OSX and Linux.
