About SpriteBench
SpriteBench is a small, free workbench for indie game developers: the sprite-sheet utilities you reach for a dozen times a week, running entirely in the browser, with honest export data for the engines people actually use.
Why it exists
Professional texture packers are excellent and priced for studios. Hobbyists and game-jam teams mostly need five things — pack, cut, GIF conversion, animation preview, pixel conversion — without installing anything, creating an account, or uploading artwork to a stranger's server. That is the whole product. The AI generator is being added as a clearly-labelled Beta, with its limits stated on its own page rather than buried.
How it is built
The site is a static build: no application server, no database. The packing layout uses the MaxRects algorithm; image work is done with the browser's Canvas API; GIF decoding and encoding, ZIP export and template rendering are handled by small open-source libraries listed below. Because everything runs on your machine, our running cost is near zero — which is why the tools can be free without watermarks or accounts.
Open-source credits
| Project | Used for | License |
|---|---|---|
| free-tex-packer-core (Oleksandr Norynchak) | The 15 atlas exporter templates (JSON Hash/Array, Phaser 3, Godot, Unity, CSS, XML, Starling, Cocos2d, Spine, Egret2D, UIKit, Unreal…) are carried over verbatim, as is its mustache formatter set. Its LICENSE file ships with this site's source in third-party/. | MIT |
| maxrects-packer | Rectangle packing layout | MIT |
| mustache.js + mustache-wax (@jvitela) | Exporter template rendering | MIT |
| gifuct-js | GIF decoding | MIT |
| gif.js | GIF encoding | MIT |
| JSZip | ZIP downloads (used under its MIT option) | MIT OR GPL-3.0-or-later (dual) — MIT elected |
| Astro | Static site framework | MIT |
We deliberately do not use AGPL-licensed code in this build, so the site's own source stays simple to license. Sample sprites on this site were produced by our own AI test pipeline and are labelled "Sample" wherever they appear.
Contact
SpriteBench is part of the rapporteur.online tool family. A public contact channel will be listed here when the site launches.