Trilium natively supports the following formats for both import and export.

• HTML:
  • This is the main format used by Trilium, where standard tags are used to represent basic formatting and layout (e.g. <strong>, <table>, <pre>).
  • Note that HTML is not a standardized format so some more specific features such as admonitions or Internal (reference) links might not be supported by other applications.
• Markdown
  • Most of the formatting is preserved, see Supported syntax.
• OPML (Outliner Interchange Format)
  • Supports both OPML v1.0 for plain text and v2.0 with HTML support.

To import from other applications, see the dedicated pages:

• Evernote
• OneNote