How AdLibraryGuide checks every ad library
AdLibraryGuide takes facts about each ad library only from the platform’s own help pages, documentation or the law that requires the library, and every interface claim is backed by a screenshot taken on a stated date. A figure without a source and a date does not appear on this site.
Where the facts come from
Section titled “Where the facts come from”Every statement about what a library shows, how long it keeps ads or which countries it covers comes from the platform’s own documentation: Meta’s Ad Library help, Google’s Ads Transparency Center help, LinkedIn’s Help Center, TikTok’s Commercial Content Library notes, and the EU Digital Services Act where a library exists because of it. Third-party blogs are used only to find where to look, never as the source.
How the screenshots are taken
Section titled “How the screenshots are taken”Each guide is built on our own session in the library, opened without logging in, from a United States connection unless the guide says otherwise. A screenshot always carries a caption with the search we ran, the filters, the number of results the library itself reported and the date. Libraries change their interface without notice, so a caption with a date is the only honest way to show one.
How often figures are rechecked
Section titled “How often figures are rechecked”Retention periods, country coverage and API terms are reread from the source before any page that prints them is updated, and the “checked” date on a page moves only when the figures were actually reread. A page is never re-dated just because it was rebuilt.
What is not compared
Section titled “What is not compared”Official libraries are not ranked against each other with a single score. Meta’s library answers “what is this page running”, Google’s answers “what has this advertiser shown on Search, YouTube and Display”, LinkedIn’s answers “what is this company promoting to professionals”. A score would hide which question each one answers.
Corrections
Section titled “Corrections”If a library changes and a page has not caught up, the page is corrected and the date of the correction is shown next to the changed statement.
Where does AdLibraryGuide get its facts?
Section titled “Where does AdLibraryGuide get its facts?”AdLibraryGuide takes every fact about an ad library from the platform’s own help pages, documentation or the law that requires the library, such as the EU Digital Services Act. Third-party blogs are used only to find where to look and are never cited as the source of a fact.
How current are the screenshots on AdLibraryGuide?
Section titled “How current are the screenshots on AdLibraryGuide?”Every screenshot carries the date of the session it came from, together with the search, the filters and the result count the library itself reported. The guides published so far were built on sessions from 8 October 2026, opened without logging in from a United States connection.