Changelog

2.0.1 — October 2026

• The XPath in the status bar is shown correctly (the leading "/" was drawn at the end).
• Text search highlights the row also when the match is inside a short element shown on one line.
• Dark theme: scrollbars follow the theme.

2.0 — October 2026

A complete rewrite, built from scratch. It keeps the add-on id, so existing users get it as an update.

Fixed (reported in reviews)

• XML is detected by content type. URLs without .xml, application/*+xml types, and XML served as octet-stream or text/plain all open in the viewer.
• No more "invalid XML" or blank pages on valid documents. Errors show the line and column, and HTML entities are tolerated.
• The 200-line limit is gone. Large documents open quickly.
• XPath works, including prefixes, default namespaces and value results.
• Non-English characters show correctly. The encoding comes from the BOM, the HTTP charset or the XML declaration.
• No console messages on websites.
• Light theme, alongside dark and automatic.
• Context menu: view a selection, a link or the page as XML.
• Public source code (MIT).

New

• Manifest V3. Works on Firefox for Android (1.x was capped at Firefox 68).
• Reader view for RSS and Atom.
• Virtualised, syntax-highlighted source view, pretty-printed or original.
• Node details: XPath, namespace, attributes; copy as XPath, XML, text or JSON.
• Export as XML, minified XML or JSON.
• Viewer page: paste XML, open or drop a file, open a URL.
• View original page and View styled (XSLT).
• Settings: detection, theme, text size, indentation, tree depth, wrapping.

Removed

• jQuery and vkbeautify. The add-on contains no third-party code.

1.2.6 — 2019

The last version of the original add-on. It is still available in Files.