Advanced Spellbook enhances the default Spellbook by making it easier to see which spells you aren’t using — and keeps your action bars up to date.

Features

Missing Spell Highlights: Highlights spellbook entries that are not placed on your action bars (best-effort detection across different clients/UI setups).

Max-Rank Aware: Only highlights the highest available rank of a spell to avoid duplicate glowing ranks.

Ignores Non-Relevant Entries: Passive spells, future spells, and pet actions are excluded from highlighting.

Macro & Flyout Support (best-effort): Scans action bars broadly and also tries to detect spells used via macros/flyouts where possible.

Auto UpRank (optional): Automatically replaces lower-rank spells on your action bars with the highest rank you know (safe handling: won’t try to modify bars during combat).

Customization

Highlight Color Picker 

Highlight Intensity Slider (adjust glow strength).

Settings are saved via AdvancedSpellbookDB.

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UI / Quality of Life

“Auto UpRank” checkbox inside the Spellbook.

Small gear button opens the highlight options window.

Movable UI elements: Hold CTRL + Right Click to drag the checkbox/gear (position is saved).

ElvUI/Tukui friendly: Includes skin-detection and tries to play nicely with popular UI skins.