There are a number of built-in plugins that can be added to draw.io, either added as a one-off, for added for every time you use draw.io with that browser.
To load one-off, use the p=xxxx URL parameter. The following plugins are available:
|p1 / doors||Examples (see p1.js and doors.js)|
|ex||Adds Explore from Here in context menu (example)|
|voice||Voice Assistant (Voice menu)|
|tips||Icons for tooltips in chromeless mode|
|svgdata||Adds metadata and IDs in SVG export|
|number||Numbering all shapes in chromeless mode|
|sql||Adds Arrange, Insert, From SQL|
|props||Shows metadata in chromeless mode|
|text||Adds Extras, Extract Text|
|anim||Adds Extras, Animation (autostarts in chromeless mode)|
|update||Adds data-driven diagrams in chromeless mode (see source for details)|
|replay||Adds Extras, Record for replaying all changes on a diagram|
|anon||Adds Extras, Anonymize Current Page to remove metadata and change labels|
For example, to use the voice and ex plugins, the following URL is used: https://www.draw.io/?p=voice;ex
The above method needs the p parameter to be each time. If you want to setup a browser to load one of more plugins every time, use the plugin dialog, found under Extras->Plugins.
In the dialog click add and enter "/plugins/foo.js" where "foo" is replaced with the plugin name (the IDs in the table above, e.g. "/plugins/sql.js"). You can add multiple plugins by clicking add again and adding further plugins.
When you are finished adding, press apply and then refresh to have the plugins installed.
To remove plugins go back to the plugin dialog and click the trash icon next to plugins to remove them.