diagrams.free (https://diagrams.free)
Last updated: June 2026
Plain-language summary, not legal advice.
diagrams.free is a free browser-based drawing tool. The site is hosted as static files; there is no paid tier and no account required to use the editor locally in your browser.
You keep ownership of diagrams you create. Content you save stays on your device unless you choose to export it or sync it (for example to Google Drive when that feature is enabled).
Use diagrams.free lawfully. Do not attempt to disrupt the service, scrape it abusively, or use it to distribute malware or illegal material.
diagrams.free is based on Excalidraw (MIT License). See About and the repository konashevich/diagrams-free for attribution and source code.
The service is provided “as is” without warranties of any kind. We do not guarantee uninterrupted availability, data retention, or fitness for a particular purpose. Back up your work regularly (export to file).
To the extent permitted by law, the maintainers of diagrams.free are not liable for any loss of data, loss of profits, or indirect damages arising from use of the service.
These terms may be updated from time to time. Continued use of the site after changes are posted constitutes acceptance of the updated terms.
Email: support@diagrams.free · GitHub