A Flarum 2.0 extension that gives users accessibility-focused font size controls directly in the forum header — no CSS editing required. Admins set sitewide defaults; users override them with their own preferences, saved in cookies.
- Header button — a
fa-text-heighticon in the forum header opens a modal for all users, including guests - Reading text slider — scales post body text and discussion titles from 100% to 150% in 5% increments
- Interface size toggle — Default or Large (115%) mode for navigation, buttons, and other UI elements
- Cookie persistence — preferences are saved for 1 year so returning visitors keep their settings
- Admin defaults — set a sitewide default for both reading text size and interface size from the extension settings page
- Live preview — the admin panel previews changes as you drag the slider
- Debounced save — settings save 500ms after you stop dragging to prevent API conflicts
- Theme agnostic — uses Flarum CSS variables throughout; works on all light and dark themes
The reading text slider runs from 100% (Flarum default) to 150% in 5% increments. The interface size toggle offers Default or Large (115%). Both values are stored as cookies (lr_text_scale and lr_ui_size) on the user's browser. If no cookie exists, the user sees whatever the admin has configured as the sitewide default.
Admin defaults are saved to Flarum's settings table under linkrobins-font-sizer.scale and linkrobins-font-sizer.ui, and served to the forum frontend in the page payload.
composer require linkrobins/font-sizer
- Flarum 2.0 RC1+
- No dependencies beyond
flarum/core
MIT