Google Publisher Tag

Google Publisher Tag (GPT) is an ad tagging library for Google Ad Manager which is used to dynamically build ad requests.

advertising12,490 eligible domainsdevelopers.google.com
Broader database observations
Share of tracked domains5.3%
Avg confidence100%
30-day observation change+61

These statistics include detections outside the stricter public preview. Counts can exceed the qualifying domains above; they describe our coverage, not internet-wide market share.

Search database

What is Google Publisher Tag?

Google Publisher Tag is a advertising technology. Google Publisher Tag (GPT) is an ad tagging library for Google Ad Manager which is used to dynamically build ad requests.. Currently detected on 12,490 quality-eligible websites in the Glympt index.

Official website: developers.google.com.

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Country lead-list previews

Qualifying domains with estimated country confidence of at least 70. Counts here match the linked previews.

Estimated countries across broader detections

Includes observations below the public country preview’s confidence and quality thresholds. These are website geography signals, not verified business locations.

BR · 603DE · 232ES · 576FR · 409GB · 347IT · 474NL · 224PL · 165SE · 185US · 2,270

Related technologies

Co-detected in the broader database

Counts include broader stored detections, without the public preview’s quality filters. Co-detection describes an observation, not a recommendation or integration guarantee.

Frequently asked questions

How does Glympt detect Google Publisher Tag?

By scanning headers, HTML, JS globals, meta tags, and cookies. Detection is automated and non-intrusive.

What does the score measure?

The average detector score for Google Publisher Tag is 100/100. It measures matching evidence, not independently verified accuracy.

Can I export?

Yes. Pro and Business plans include CSV export with full filtering.

Refresh rate?

Observation dates are shown on each report. Refresh timing varies with crawler capacity; you can request a fresh scan from the dashboard.

Does this measure Google Publisher Tag market growth?

Our database recorded a net change of 61 observations in 30 days. New coverage and rescans affect this number; it is not a measure of market growth or migrations.

What is "confidence"?

A 0–100 detector score based on matching signals. Stronger evidence increases the score, but false positives and missed technologies remain possible.