Tagfern
Your markup, unfurled.
Tagfern turns tag-heavy XML and raw Markdown into clean pages you can read, search, edit and export — on your Mac.
For macOS 12 and later · Apple silicon
Read files like documents, not code
Open an XML export or a Markdown file and see headings, lists and tables instead of brackets and symbols.
Edit Markdown in place
Click into the page and type, like a word processor. Your file stays clean Markdown — only the lines you change are rewritten.
XML made readable
See XML as a tidy document, as collapsible cards for each record, or as a color-coded tree.
Source when you want it
Split view shows the raw file next to the page. Edit either side and the other follows.
Table of contents
Jump between sections of long documents, with the one you're reading highlighted.
Search and PDF export
Find text in any view, and export a clean, paginated PDF to share with anyone.
Private by design
No accounts, no tracking, no uploads. Your files never leave your Mac.
One app for both kinds of markup
Writing notes in Markdown or digging through an XML feed, Tagfern shows you the content, not the tags.
Opens
Get Tagfern
$4.99, one time. No subscription.
Coming soon to the Mac App Store. Buying direct gets you a download for macOS 12 and later on Apple silicon.