Meta Ad Library (formerly the Facebook Ad Library)

What the Meta Ad Library is

The Meta Ad Library is Meta's public archive of the ads running across Facebook, Instagram, Messenger and the Audience Network. Meta built it in 2018, under pressure over political advertising, and it has quietly become the most useful competitive research tool in performance marketing: every advertiser on the platform is in it, whether they like it or not.

It launched as the Facebook Ad Library and the two names still float around interchangeably. The rename followed the company's own, the URL never changed, and facebook.com/ads/library remains where the tool lives. If someone tells you to check the FB ad library, they mean this.

It is free, it needs no account, and the advertiser is never told you looked. You only sign in to Facebook if you want to download the results of a search, which Meta gates behind its terms of service.

What is actually in it

Meta is precise about the scope, and the precision matters because most guides get it wrong. The library holds every ad currently running across Meta's apps, worldwide. On top of that live set it keeps three archives: ads about social issues, elections or politics for seven years; ads delivered anywhere in the EU for the past year; and ads delivered in the UK for the past year, covering ads that ran after 1 July 2025.

Read that list again, because the gap in it is the whole story. A normal commercial ad in the United States, Canada, Australia or anywhere outside those windows exists in the library only while it is running. The day the advertiser switches it off, it is gone, and nothing you can do inside the tool brings it back.

New ads appear within 24 hours of their first impression, and edits to a live ad show up on the same schedule.

What each ad shows you

Open any result and you get the creative itself — image, video or carousel — plus the primary text, the headline, the call-to-action button, the display domain and the destination the ad points at. Above it sits the Library ID and the date the ad started running, and a row of icons tells you which Meta surfaces it was delivered on.

Two details repay attention. The line reading that an ad has multiple versions means the advertiser is running variants of the same creative, which is a direct read on what they are testing. And the start date, on an ad still running months later, is the closest thing the library gives you to a performance signal: nobody keeps paying for a loser.

Both are easy to see on a live search. Scroll Warby Parker's active US ads and the cards carrying a line like two ads use this creative and text are the ones where a single concept is being run in more than one cut — a different opening frame, a different headline against the same image. Count how many of a competitor's ads carry that line and you have a rough measure of how seriously they test rather than how much they publish.

Ads delivered into the EU carry extra fields under an EU transparency panel — reach per country, the date range, and the targeting parameters the advertiser selected. Political and issue ads carry more still: the funding entity, a spend range, an impressions range and a demographic breakdown, all of which also feed the downloadable Ad Library Report.

What it will not tell you

For an ordinary commercial ad, the library publishes no spend, no impressions, no click-through rate and no conversion data. This is not a field waiting to be filled in — that data is not in the library at all. Any tool promising you a competitor's Facebook ad spend is either estimating it from something else or making it up.

There is no performance ranking either. Sorting by impressions works only where impression data exists, which is the political and EU-delivered set, so for commercial research you are reading the ads themselves rather than any metric attached to them.

The Ad Library API has the same shape of limitation. It is scoped to ads about social issues, elections and politics, plus ads delivered to the EU and associated territories. You cannot script a competitor's ordinary retail ads out of it.

How to search it without wasting an hour

The search box does two different jobs and does not tell you which one it is doing. A keyword search matches text inside ads and the names of the Pages running them, so a query like Nike returns the brand, plus resellers, affiliates, dropshippers and anyone who wrote the word in their copy. On a big brand the noise is overwhelming.

Watch it happen on three real searches, all set to active ads in the United States. Warby Parker returns roughly 420 results and behaves: almost everything on the first few screens is Warby Parker's own Page. Gymshark returns around 600 and starts to drift — among the brand's own ads sits a Planet Fitness campaign offering a summer pass with twenty per cent off Gymshark, which matched because the word appears in the copy. Then search Ridge, the wallet company, and you get roughly thirty-two thousand results, because ridge is an ordinary English word and the library is matching every advertiser who used it.

That progression is the whole lesson. The more common the brand name, the less a keyword search is worth, and there is no setting that fixes it — the fix is to stop searching text and start reading one Page.

The reliable route is to find the advertiser's actual Page and read their ads directly. When a brand's Page name does not match their brand — and it often does not, because Pages carry country suffixes, legal entities or old company names — the fastest fixes are these:

The country filter is the other trap. Ads are indexed by where they were shown, so a search set to the United Kingdom will not surface the US campaigns of the same advertiser. If you are checking whether a competitor has launched something, check their home market and yours, separately.

• Open the brand's website and follow their own Facebook or Instagram link — that is the Page the ads run from.
• Search their Instagram handle rather than their brand name; the two are usually connected to one business.
• Find one ad you know is theirs, click the advertiser name on it, and you land on a Page-scoped view of everything they are running.
• Switch the ad category between All ads and Issues, elections or politics — they return different data sets, not different sorts of the same one.

Where the Meta Ad Library stops being enough

The library answers one question well: what is this advertiser running right now. It is built for transparency, not for research, and the difference shows the moment you want a second look.

Nothing is diffed, so the ads that started this week and the ones quietly killed last Tuesday look identical to the ads that have run all year. Nothing is stored, so a creative you saw in March and want to reference in July is unrecoverable outside the EU and UK windows. Nothing is exported, so building a swipe file means screenshots in a folder. Nothing alerts you, so a competitor's launch reaches you whenever you next happen to look. And the results are paginated and reordered on every load, which makes even a manual weekly check unreliable.

Marketers work around all of this the same way — a calendar reminder, a scroll, a screenshot, a Slack message — and it holds for about three weeks.