Migrating from OneNote (user contributed)

This page describes a method to migrate via EverNote Legacy, but this app is no longer available/working.

Prep Onenote notes for best compatibility

Remove Onenote Tags and replace with Emoji if possible (Onenote Tags will get imported into trilium as an image which clutters the Trilium tree somewhat)
Make sure to use Onenote headings where applicable (These will be carried over correctly into Trilium)
Remove extra whitespace in Onenote (Whitespace seems to be more noticible in Trilium, so removing it now will make it look nicer in trilium)
If possible, try to avoid very long Onenote pages. Trilium works best with shorter concise pages with any number of sub or (sub-sub...) pages.
Make sure numbered lists don't have unusual spaces between items in the list (Sometimes the numbered list will start at 1 again in Trilum if there is an extra space in the list in OneNote).

Migration Procedure

Import into Evernote from OneNote:

Install Evernote Legacy. Current versions of Evernote do not have this functionality. (Requires Evernote account, but import works without internet connection - be sure to NOT sync notes to Evernote!).
In evernote navigate to File > Import > Onenote > Notebook > Section > OK

If exporting all sections at a time, they will not be grouped in folders - they will all be added to a single folder, but the order will be kept, so you can re-group into folders after importing to Trilium

Export from Evernote

Right click on the created notebook in Evernote and choose "Export Notes…"
Use the default export format of .enex

Cleanup enex file (optional)

If the Onenote header (that is at the top of each Onenote page) is not desired, you can use the following regex to remove them in a text editor like VsCode:

Find (using regex): .<div.*><h1 Replace with: <h1

Import into Trilium

In Trilium, right click on the root node and choose Import (all default options should be fine).
Select the .enex file exported from Evernote
Be patient. Large .enex files may take a few minutes to process
Repeat import for each .enex file

Other importing notes:

Centered text in Onenote will be left-justified after importing into Trilium
Internal onenote links will obviously be broken, but the link still exists so you can do a search in Trilium to find all onenote:// links and then re-link to the proper Trilium page (there is no way to link to a paragraph in trilium, so it's good to keep trilium pages short so links point to a small chunk of information instead of a massive note)
Text colors, highlights, and formatting generally carries over well
Revision history will be lost, but any new revisions will be tracked in Trilium
The structure of notes are not maintained exactly, so if you had sub-notes in Onenote, you may have to re-arrange the notes accordingly (This is easy since the order of the notes is preserved).
Evernote tags are created for each "section" in OneNote and these tags are carried over to Trilium as attributes
- If the tags are not desired, you can turn them off in the Evernote export options.
If the "Created with OneNote" text is not desired, do a find/replace in the enex files before importing to Trilium
Some links will be disabled (not clickable) when importing from enex.
Files, screenshots, and attachments are all preserved (This is the only one-note export option that seems to preserve all of these).

Screenshot tour
Basic concepts
- Document
- Note
- Navigation
- Keyboard shortcuts
- Themes
  - Theme Gallery
- Import & Export
Installation & setup
Advanced usage
- Attributes
- Relation map
- Note map
- Book note
- Sharing
- Code notes
- Advanced showcases
- ETAPI (REST API)
- Default note title
Developer guides
- Frontend Basics
- Widget Basics
FAQ
Troubleshooting

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