Meta Ad Library in the EU: The Extra Reach and Audience Data

EU ad transparency

The additional disclosure the Meta Ad Library carries for ads shown in the European Union, covering targeting parameters, estimated reach, demographic reach breakdowns and the advertiser and payer, retained for a year.

Also known as: DSA ad transparency, EU transparency

Everywhere else, a commercial ad in the library shows the creative, the advertiser, the platforms and the start date. That is enough to see what a competitor runs, but not who it reached. For ads delivered in the EU, Meta publishes the audience side as well, and it keeps those ads visible for a year after they stop rather than dropping them.

Two consequences matter for competitive research. First, you can compare reach between the ads of one competitor, which is the nearest public view of where their delivery goes. Second, you can see their stopped EU ads with start and end dates, so the history of their campaigns is partly recoverable even if you never recorded it.

Rank their EU ads by reach. The top few are where their delivery concentrates, and delivery follows budget and performance together. An ad that has been live for months and also leads on reach is as close to a confirmed winner as public data gets.

Reach is cumulative for the life of the ad, so a single reading tells you the total so far. Record it on each visit and the difference between readings shows whether the ad is still reaching new people. An ad whose reach barely moves over two weeks is live but no longer pushed.

Many advertisers now select broad audiences and let Meta find the buyers. In those cases the audience fields are uninformative, but the delivery breakdown is not. It shows where the system chose to spend the budget, and the system optimizes toward people who respond. That is indirect evidence about who their customers are.

Compare the delivery split across several of their ads. If every ad skews toward the same age bands regardless of creative, that is their market. If the split changes with the creative, their creative is choosing the audience, and the ads reaching a group you also sell to deserve a close look.

The location breakdown works the same way at country level. The guide on competitor ad country targeting uses it, along with other clues, to map which markets a competitor actually prioritizes.

The UK tab mirrors the EU one, with its own "Ad audience" and "Ad delivery" sections and a reach figure counting Meta accounts in the United Kingdom. For competitors selling into Britain and the EU, the two tabs let you compare how the same ad performed in each.

Because UK coverage starts from mid-2025, older UK-only campaigns will not appear, and anything you want to compare over a longer window should be recorded as you go.

This is still more than any other public source offers for commercial advertising, and it is free. Oppira tracks competitor Meta ads on the Basic plan and above, checking them twice a week while they run and recording how long each has been live. For the ads that matter most, opening the EU panel by hand adds the reach and audience view on top.

Article 39 of the Digital Services Act sets out what the repository has to contain, including the ad content, on whose behalf it was shown, who paid, the period it ran, whether it was targeted and the main parameters used, and the total number of people reached, broken down by member state where relevant. Meta expanded its Ad Library to meet the obligation in August 2023.

The legal basis is useful to know because it explains the boundaries. The data covers what the regulation asks for and not much more, which is why the targeting fields stop at location, age and gender, and why the rest of the world gets the standard library.