Publisher Tag Debugger

A modern browser extension for debugging Google Ad Manager (GAM) publisher tags. Inspect ad slots, targeting parameters, and response information directly in your browser's side panel.

Features:
- Ad Slot Detection - Automatically scans pages for Google Ad Manager slots via the googletag API
- Slot Analysis - View ad unit paths, sizes, network codes, and MCM parent IDs
- Fill Status - Instantly see which slots are filled vs. empty with stats dashboard
- Targeting Inspector - Examine page-level and slot-level targeting key-value pairs
- Response Details - View advertiser, campaign, creative, and line item IDs for filled slots
- Visual Highlighting - Click to highlight any slot on the page with an animated overlay
- Dark Mode - Automatic system preference detection with manual toggle
Cross-Browser - Works on Chrome (MV3) and Firefox (MV2)