relternate
Relternate is a WebExtension that adds a single button to the URL bar on pages containing <link rel=...> entries in their header, which displays a table of the relations and hrefs, with their types, media, and hreflang attributes.
It prioritises alternate-type and -media representations, but lists all entries in the page except stylesheets, icons, and preload/fetch items, with clickable links to the relevant hrefs.
Relternate is available to install:
- For Firefox from addons.mozilla.org
- By loading a temporary add-on from the files in this repository
- For Chrome and Edge by editing the files to conform to the Chrome API