Skip to content
Glossary

What is a noteref?

Updated:

A noteref is the link from a reference mark in the text (a superscript number or symbol) to its note, marked in EPUB 3 with epub:type="noteref". Reading apps that support it open the note in a pop-up.

Why it matters when you convert a PDF to EPUB

In a PDF the reference is just a small raised number, so a converter has to recognise it by size and position, keep it out of the word it touches, and turn it into a noteref link to the right note.

Related terms

EPUBCheck messages about this

  • RSC-012 Fragment identifier is not defined.

Convert a PDF to EPUB
Convert up to 5 pages free, no account needed.

FAQ

What is a noteref?

A noteref is the link from a reference mark in the text (a superscript number or symbol) to its note, marked in EPUB 3 with epub:type="noteref". Reading apps that support it open the note in a pop-up.