Embed HTML options
The configuration and data of an embedded HTML diagram are stored in a JSON object in the data-mxgraph attribute of the placeholder <div>. The complete list of supported keys — toolbar configuration, layout and sizing, navigation, lightbox behaviour, link/tooltip icons, browser translation — is maintained as a GitHub Discussion:
Embed HTML reference — jgraph/drawio Discussion #5617
Use the comments on that discussion for questions, clarifications, and updates.