ArthasMod is a browser extension that customizes the ISY web UI with a dark, modern theme and quality-of-life tweaks.
- Applies a custom "ArthasMod" visual theme (colors, typography, cards, menus).
- Adds a third theme option in the profile settings alongside base light/dark modes.
- Improves timetable visuals (lesson colors, readability, sizing/spacing tweaks).
- Adds UI fixes for specific pages (e.g., absences/table alignment, sidebars, overlays).
- Injects small behavior enhancements via content scripts.
manifest.json– extension config and permissions.content.js– DOM behavior, UI patching, theme mode logic.styles.css– theme styling and component overrides.background.js– background extension logic.main-world-cache.js– additional in-page cache/runtime helper logic.
- Load the extension as an unpacked extension in your browser.
- Open ISY.
- In profile settings, select ArthasMod to enable the custom theme.