Trilium allows you to share selected notes as publicly accessible read-only documents. This feature is particularly useful for publishing content directly from your Trilium notes, making it accessible to others online.

Prerequisites

To use the sharing feature, you must have a Server Installation of Trilium. This is necessary because the notes will be hosted from the server.

How to Share a Note

1. Enable Sharing: To share a note, toggle the Shared switch within the note's interface. Once sharing is enabled, an URL will appear, which you can click to access the shared note.

   

2. Access the Shared Note: The link provided will open the note in your browser. If your server is not configured with a public IP, the URL will refer to localhost (127.0.0.1).

   

Sharing a Note Subtree

When you share a note, you actually share the entire subtree of notes beneath it. If the note has child notes, they will also be included in the shared content. For example, sharing the "Formatting" subtree will display a page with basic navigation for exploring all the notes within that subtree.

Viewing All Shared Notes

You can view a list of all shared notes by clicking on "Show Shared Notes Subtree." This allows you to manage and navigate through all the notes you have made public.

Security Considerations

Shared notes are published on the open internet and can be accessed by anyone with the URL. The URL's randomness does not provide security, so it is crucial not to share sensitive information through this feature.

Password Protection

To protect shared notes with a username and password, you can use the #shareCredentials attribute. Add this label to the note with the format #shareCredentials="username:password". To protect an entire subtree, make sure the label is inheritable.

Advanced Sharing Options

Customizing the Appearance of Shared Notes

The default shared page is basic in design, but you can customize it using your own CSS:

• Custom CSS: Link a CSS Code note to the shared page by adding a ~shareCss relation to the note. If you want this style to apply to the entire subtree, make the label inheritable. You can hide the CSS code note from the tree navigation by adding the #shareHiddenFromTree label.
• Omitting Default CSS: For extensive styling changes, use the #shareOmitDefaultCss label to avoid conflicts with Trilium's default stylesheet.

Adding JavaScript

You can inject custom JavaScript into the shared note using the ~shareJs relation. This allows you to access note attributes or traverse the note tree using the fetchNote() API, which retrieves note data based on its ID.

Example:

const currentNote = await fetchNote();
const parentNote = await fetchNote(currentNote.parentNoteIds[0]);

for (const attr of parentNote.attributes) {
    console.log(attr.type, attr.name, attr.value);
}

Creating Human-Readable URL Aliases

Shared notes typically have URLs like http://domain.tld/share/knvU8aJy4dJ7, where the last part is the note's ID. You can make these URLs more user-friendly by adding the #shareAlias label to individual notes (e.g., #shareAlias=highlighting). This will change the URL to http://domain.tld/share/highlighting.

Important:

1. Ensure that aliases are unique.
2. Using slashes (/) within aliases to create subpaths is not supported.

Viewing and Managing Shared Notes

All shared notes are grouped under an automatically managed "Shared Notes" section. From here, you can view, share, or unshare notes by moving or cloning them within this section.

Setting a Custom Favicon

To customize the favicon for your shared pages, create a relation ~shareFavicon pointing to a file note containing the favicon (e.g., in .ico format).

Sharing a Note as the Root

You can designate a specific note or folder as the root of your shared content by adding the #shareRoot label. This note will be linked when visiting [http://domain.tld/share](http://domain/share), making it easier to use Trilium as a fully-fledged website. Consider combining this with the #shareIndex label, which will display a list of all shared notes.

Limitations

While the sharing feature is powerful, it has some limitations:

• No Relation Map Support
• Book Notes: Only show a list of child notes.
• Code Notes: No syntax highlighting.
• Static Note Tree
• Protected Notes: Cannot be shared.
• Include Notes: Not supported.

Some of these limitations may be addressed in future updates.

Attribute reference