Open source
useonlinetools is fully open source. The entire codebase — every tool, component, and design token — is publicly available. You can inspect exactly how each tool processes your data and verify that nothing is ever sent to a server.
Repository
The source code is hosted on GitHub. You can browse the code, open issues, submit pull requests, or fork the project to run your own instance.
Tech stack
- Astro — static site generation with React islands for interactive components
- React — tool interfaces (dropzones, editors, state management)
- Web Crypto API — cryptographic hashing (SHA-256, SHA-512)
- Canvas API — image processing
- Cloudflare Pages — hosting and CDN
Contributing
Contributions are welcome. Whether you want to add a new tool, improve an existing one, fix a bug, or enhance the design — open an issue or pull request on GitHub. The project follows a standard fork-and-PR workflow.
License
This project is licensed under the MIT License. You're free to use, modify, and distribute the code for any purpose, personal or commercial.