The latest articles on DEV Community by Xizar (@xizar_e006a11514586). https://dev.to/xizar_e006a11514586 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4159868%2F609d9169-7e92-4835-905e-62cb054d0549.png https://dev.to/xizar_e006a11514586 en Xizar Sat, 03 Oct 2026 14:07:09 +0000 https://dev.to/xizar_e006a11514586/fossprite-a-pixel-art-editor-in-a-single-html-file-that-works-offline-1ibe https://dev.to/xizar_e006a11514586/fossprite-a-pixel-art-editor-in-a-single-html-file-that-works-offline-1ibe <p>I'm developing Fossprite, a pixel-art editor that runs in the browser and is meant to be used offline.</p> <p>It's a single HTML file, so there's no server, account, CDN, or npm runtime involved. Download it, open it locally, and your artwork stays on your own machine.</p> <h2> What it does so far </h2> <ul> <li>Drawing and painting tools</li> <li>Color palettes and layers</li> <li>Animation</li> <li>Project saving and loading</li> <li>Image-to-pixel-art conversion</li> <li>Keyboard shortcuts</li> <li>Import/export for several pixel-art and image formats</li> </ul> <p>It's still in beta. Some parts are unfinished, some image formats aren't supported yet, and bugs are possible. Please back up anything important while you test it.</p> <h2> Why a browser app if it's meant to be offline? </h2> <p>Because "browser-based" and "online" aren't the same thing. The browser is just where Fossprite runs, and it doesn't need an internet connection. I went with it because pretty much everyone already has one, on any operating system, so there's nothing extra to install. The trade-off is that some browser limitations still apply.</p> <h2> Code and licensing </h2> <p>I used AI-assisted coding during development, and the single-file structure has left the code harder to read than I'd like. Splitting it into clearer modules is on my list.</p> <p>The repo contains original Fossprite code, adapted code, and embedded third-party libraries. Some of the drawing, palette, and other tools are documented as adaptations of DogSprite and Simple Pixel Art. The embedded libraries keep their original licenses, including MIT, Apache-2.0, Ms-PL, Zlib, and BSD-3-Clause.</p> <p>I'm not distributing the whole HTML file under the MIT License. The root <code>LICENSE</code> covers only original Fossprite code, and its copyright-holder field is currently marked UNVERIFIED because my provenance audit isn't finished. The known third-party components and remaining uncertainties are documented in <code>THIRD-PARTY-NOTICES.md</code>.</p> <h2> Feedback </h2> <p>I'd like to hear what you think of the editor, the documentation, the licensing notes, and the contributor experience. Is the scope of the licenses easy to understand? Did I miss any notable third-party components? And if you try it, what's the first thing you'd change?</p> <p>Repo: <a href="https://github.com/xizar280513/Fossprite" rel="noopener noreferrer">https://github.com/xizar280513/Fossprite</a></p> ai webapp pixelart html