Levity

Levity is a free, open source logo design application that runs entirely on your machine. You download a single binary, launch it, and get a browser based interface where you can generate logo concepts from text prompts, then edit, resize, recolor, and export them without creating an account or sending your work to someone else's server. The actual image generation reaches an external provider you choose, but all the editing and processing happens locally using Go's standard library.

The generation workflow is straightforward. You describe what you want, pick colors, set an aspect ratio and batch size, and Levity sends the request to either Cloudflare Workers AI (which has a free tier) or OpenRouter if you want more model options. Candidates come back and you can cycle through them, tweak settings, and regenerate until something clicks. Once you have a logo you like, the local editing suite takes over.

That editing suite is where Levity earns its keep for people who usually jump between tools. You can knock out backgrounds to transparent, auto trim whitespace, resize to any dimension, upscale without losing sharpness, pad with margins, rotate, flip, recolor, and fill. All of this stays on your machine. When you're ready to ship, batch export generates favicon sets, app icons for iOS and Android, social media dimension packs, and custom sizes in one click.

The project management layer helps if you're exploring multiple directions. Every generated image goes into a local database you can browse, filter by favorites, and organize. It's a small thing, but it keeps you from losing that one variant you almost picked before generating twenty more.

Levity is aimed at indie developers, side project builders, and anyone who needs a logo but doesn't want to learn Illustrator or pay for a design tool subscription. It's also useful for anyone cautious about uploading brand assets to cloud services. Because the editing is local and the generation providers are swappable, you keep control over where your data goes.

Access is completely free. The tool is open source under MIT, the code is on GitHub, and you can build it from source if you prefer. There's no premium tier, no watermarks, and no account required. Cloudflare's free tier is enough for moderate generation volume, so the practical cost of using Levity can be zero.