Meta Ad Library
Every active ad across Facebook, Instagram, Messenger, and the Audience Network, searchable by advertiser or keyword. The deepest of the four, and the one most ecommerce research starts and ends with.
Complete guide
Business Ad Library: How to Find and Read Competitor Ads
A business ad library is a free, public database of the ads a company is currently running on a platform. Meta, TikTok, Google, and LinkedIn each publish one, and together they show you what your competitors are arguing right now, for free, with no tool subscription. This guide covers where they are, how to search them properly, what to record, and the limit every one of them shares.
Key takeaways
- Four public ad libraries cover the platforms that matter: Meta, TikTok, Google, and LinkedIn. All free, none requiring an account with the competitor you are researching.
- Ad libraries show what is running, never what is working. Longevity is the only performance proxy they give you, which makes an ad that has been live for months the most valuable thing in the interface.
- The reusable output is the argument, not the execution: the claim, the objection it answers, the proof, and the audience. Cross-check the gaps against your own reviews before you test.
What a Business Ad Library Actually Is
Ad libraries exist because of regulation, not generosity. Meta launched what was then the Facebook Ad Library in 2018 under pressure over political-advertising transparency, then extended it to cover all advertising, and Meta's own documentation now describes it as a searchable collection of all ads currently running across its technologies. The side effect is that any brand can see any competitor's live creative without a subscription, an account, or a relationship. That is a genuinely unusual state of affairs in a competitive market, and most ecommerce teams still use it as a mood board.
It matters because the creative is where paid performance is decided. Nielsen's 2017 creative-effectiveness research credits creative, not targeting or media spend, with up to 89% of a digital ad's in-market success, and broad targeting has only pushed more of the qualifying job into the ad itself. Knowing which arguments your market is already making, and which it is not, is therefore competitive intelligence about the highest-leverage variable you control. Mirella Crespi, CEO of Creative Milkshake, describes the step that separates browsing from research: “There is a method to the madness of actually looking through creatives, taking those learnings from your competitor's research, and then turning it into something that you can actually execute. This is what we call the creative analysis stage of research.”
The Four Public Ad Libraries Worth Your Time
Each covers its own platform and publishes slightly different fields. Start with the one where your competitors actually spend.
TikTok Creative Center
Top-performing ads by industry, region, and time window, with engagement indicators the other libraries do not publish. The closest thing to a public performance signal you will find.
Google Ads Transparency Center
Ads an advertiser has run across Search, YouTube, and Display, with a date range. Useful for seeing how long a message has been in market, which is the closest proxy for whether it works.
LinkedIn Ad Library
Sponsored content from company pages. Thin for direct-to-consumer brands, genuinely useful if your competitors sell to businesses or recruit against you.
Where to Find Each One
All four are open in a browser with no login: the Meta Ad Library, TikTok's Creative Center, and the Google Ads Transparency Center. Bookmark the two your competitors actually use rather than trying to work all four every month, because coverage you do not maintain is worse than coverage you never started: it gives you a stale picture you still trust.
How to Research a Competitor in an Ad Library, Step by Step
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1
Build a real competitor list first
Not the three brands your team names in a meeting. Include the two that outrank you in search, the one your reviews keep mentioning by name, and the cheap alternative buyers compare you against. Reviews are the best source here, because customers name the competitor they left in their own words.
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2
Search by advertiser, then by keyword
Searching a brand shows you what one competitor argues. Searching a category term shows you what the whole market argues, including brands you did not know were bidding against you for attention. Do both, in that order, because the second one is where the surprises are.
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3
Filter to what has been running longest
Ad libraries publish start dates. An ad that has been live for four months in a competitive category is the single most useful signal available to you, because nobody keeps paying for a creative that loses. Sort by longevity and you have a shortlist of proven arguments without any performance data at all.
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4
Record the argument, not the layout
For each ad worth keeping, write down four things: the claim it makes, the objection it answers, the proof it offers, and who it is clearly talking to. That is the reusable part. The font, the colour grade, and the transition are not.
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5
Map the claims against each other
Lay every competitor claim side by side and the gaps appear immediately: the objection nobody is answering, the segment nobody is addressing, the proof type everybody leans on so heavily that it has stopped being differentiating. Those gaps are your angles.
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6
Check the gap against your own customers
An unclaimed angle is only worth testing if your buyers actually care about it. Cross-reference the gap with your reviews and comments. If the objection nobody answers is also the objection your customers raise, you have found the test worth running this week.
Ad libraries tell you what your competitors argue. Your reviews tell you what your buyers actually care about. Selzee reads both and returns the angle worth testing next, with the customer language behind it.
See Selzee in Action, Request a DemoThe Limit Every Ad Library Shares
No public ad library publishes performance. You cannot see spend, click-through rate, cost per acquisition, or return on ad spend for anyone else's creative, and any tool claiming to show you a competitor's exact numbers is modelling, not measuring. This is the single most important thing to internalise, because it changes how you read the interface: a competitor ad is a hypothesis somebody else is funding, not a proven winner. The one real signal available is time. Platforms publish start dates, and an ad still running after months in a competitive category has almost certainly earned its place, because no team keeps paying to serve a loser. Sort by longevity, treat everything launched in the last few weeks as an experiment rather than a conclusion, and you extract most of the available value without pretending to data nobody has.
Six Ways Ad Library Research Goes Wrong
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Copying the execution instead of the argument
Fix: rebuild the claim in your own brand and product truth. A competitor's hook works because of their proof and their audience. Cloning their layout gives you neither.
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Assuming a visible ad is a winning ad
Fix: ad libraries show what is running, never what is working. Longevity is the only performance proxy available, so weight by how long an ad has been live and treat everything recent as unproven.
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Researching once and calling it a quarter
Fix: check monthly. Competitor messaging shifts with their own testing cycle, and a quarterly audit reads a market that has already moved on.
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Only looking at the direct competitors
Fix: include the adjacent category and the cheap alternative. Buyers compare across those lines even when your positioning deck does not.
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Collecting screenshots nobody revisits
Fix: a folder of images is not research. Write the claim, objection, proof, and audience next to each one, or the work is unusable within a fortnight.
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Skipping the customer cross-check
Fix: an angle your competitors ignore might be ignored for a good reason. Validate against your own reviews before you spend production budget on it.
From Ad Library to a Brief You Can Actually Run
Competitor research answers half the question. It tells you which arguments are already in market and which are unclaimed. It cannot tell you whether an unclaimed argument is unclaimed because it is valuable or because it does not work, and that answer only lives in your own customer evidence. The teams that get value from ad libraries are the ones that treat a gap as a hypothesis and then test it against what their buyers already say in reviews, comments, and support tickets.
Selzee is built for that second half. It reads your reviews and comments, surfaces the objections and outcomes customers raise unprompted, and returns the hooks and briefs worth testing with the customer sentence behind each one attached. Pair it with an hour in the Meta Ad Library and you get the full picture: what the market is arguing, what it is ignoring, and which of those gaps your own buyers care about. The structured version of the competitor side is on competitor ads analysis, the paid-tool landscape is compared on the best Facebook ads spy tools, and the research workflow itself is on AI for advertising.
Business Ad Library: FAQ
01 What is a business ad library? +
A business ad library is a free, public database of the ads a company is currently running on a given platform. Meta, TikTok, Google, and LinkedIn each publish one. They exist largely because of advertising-transparency regulation, and the practical effect is that any brand can see any competitor's live creative without an account or a subscription.
02 Is the Meta Ad Library free? +
Yes, and it needs no login. The same is true of TikTok's Creative Center and the Google Ads Transparency Center. Paid spy tools layer search, alerting, and saved boards on top of the same public data, which is worth paying for when you are tracking many competitors continuously and hard to justify when you are checking five brands once a month.
03 Can I see how well a competitor's ad is performing? +
No. No public ad library publishes spend, click-through rate, or return on ad spend for another advertiser, and any tool promising exact competitor numbers is modelling rather than measuring. The one real signal is time: an ad still running after several months in a competitive category has almost certainly earned its place.
04 How often should I check competitor ad libraries? +
Monthly. Competitor messaging moves with their own testing cycle, so a quarterly audit describes a market that has already shifted. A focused thirty minutes each month on the two platforms where your competitors actually spend beats an exhaustive sweep once a quarter.
05 What should I record from each competitor ad? +
Four things: the claim it makes, the objection it answers, the proof it offers, and who it is talking to. That is the transferable part. Saving screenshots without those notes produces a folder nobody reopens, and the fonts and transitions you were tempted to copy are the least useful thing in the ad.
06 Is it legal to research competitor ads this way? +
Yes. These libraries are published deliberately by the platforms as transparency tools, and the ads in them are already public. Copying a competitor's creative assets or trademarked material is a different matter entirely, which is why the useful output of this work is the argument rewritten in your own product truth rather than the execution.
07 How does Selzee fit into competitor ad research? +
Ad libraries tell you what the market argues. Selzee tells you what your buyers care about, by reading your reviews, comments, and campaign data and returning the hooks and briefs worth testing with the customer language attached. The gap between those two answers is where your next winning angle usually sits.
Bring a competitor you cannot out-argue and a set of your own reviews. We will show you the objection they are leaving unanswered and the customer language that answers it.
See Selzee in Action, Request a DemoKeep exploring: competitor ads analysis, Facebook ad spy, the best Facebook ads spy tools compared, the competitor advertising analysis framework, trending ads, AI for advertising.