Publisher Tag Debugger

by David Vallejo · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Publisher Tag Debugger Extension

Users

+5 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#100K

#83K among extensions

Version

0.0.1

updated 24 Dec 2025

Users

monthly, 10 months

Latest, 16 Oct 2026: 63 usersMove the mouse over the chart for any month

Ratings count

monthly, 10 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About 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)