Plugins may render new preference panes or embed themselves into several existing one, store data using simple key/value data or directly in the database, modify how articles are rendered, alter feed data, and much more.

You can use sample plugins bundled with tt-rss and other plugins as a starting point. Ask on the forums if you need help with anything specific.

Some useful information may be found here:

• https://github.com/tt-rss/tt-rss/blob/main/classes/PluginHost.php
• https://github.com/tt-rss/tt-rss/blob/main/classes/Plugin.php

Frontend (JS) uses different hooks, which are defined in PluginHost.js

Localization support

See time_to_read plugin for a complete example

Implementation

• Plugin translations are placed in a separate Gettext domain (name equals lowercase plugin-class).
• Translation (.po) file in (plugin-dir)/locale/(LANG)/LC_MESSAGES/ name should correspond to Gettext domain name.

Using gettext

• On the PHP side, either use helper methods defined in classes/plugin.php (base class for all plugins) or call _dgettext group of functions directly.
• On the Javascript side, all translations are merged so you can use the usual __() shortcut function.