Rikard Jonsson
Rikard Jonsson is Founder & CEO of Hey Sid and a five-time entrepreneur with a background in B2B SaaS, sales, and brand building. He believes B2B marketing is overcomplicated and writes about going back to basics: visibility, positioning, and consistent presence among the accounts that matter.
LinkedIn Ad Library vs Meta Ad Library: Which Wins for B2B Competitor Research?
TL;DR
LinkedIn Ad Library shows the exact ads B2B competitors run to decision-makers, including document and thought-leader formats, but gives no spend data and holds each ad for only one year.
Meta Ad Library covers Facebook, Instagram, Messenger, and Audience Network, adds keyword search and an official API, and surfaces more creative variations. Its API returns commercial ads only when they ran in the EU.
For pure B2B relevance, LinkedIn wins: it is where your buyers actually are. For research depth and automation, Meta wins.
Both share one gap: they show creative, not which named accounts a competitor targets or whether the ads convert.
Use the decision table below to pick the right library, then close the intelligence-to-action gap with person-level targeting.
Related reading: LinkedIn Ads Strategy for B2B | Programmatic Advertising vs LinkedIn Ads for B2B | Contact-Level Advertising
LinkedIn Ad Library vs Meta Ad Library: the short answer
This comparison is for B2B demand gen and paid social marketers who run competitor ad research and want to know which free library earns their time.
The core difference is simple. LinkedIn Ad Library gives you the most relevant B2B creative, because LinkedIn is where buying committees spend their professional attention. Meta Ad Library gives you the deeper toolset: keyword search, an API, and a larger, more varied creative pool across four platforms.
Neither tool tells you the two things that decide a B2B campaign: who your competitor is targeting at the account level, and whether the ad is working. We break down search, data depth, B2B relevance, archive freshness, and automation so you can decide which library to open first, and where each one stops being useful.
Quick comparison: LinkedIn Ad Library vs Meta Ad Library
Criterion | LinkedIn Ad Library | Meta Ad Library |
|---|---|---|
Platforms covered | LinkedIn feed and sponsored formats | Facebook, Instagram, Messenger, Audience Network |
Search methods | Advertiser, payer, keyword, country, date | Advertiser and keyword |
Login required | No | No |
Creative shown | Image, video, document, text, format | Images, video, carousels, copy, headlines, CTAs, multiple variations |
Spend data | None for commercial ads | Only for social issues, elections, and politics |
Targeting shown | EU ads only: targeting parameters and impression range | Hidden except for political ads |
Archive window | Each ad kept 1 year after its last impression | Non-EU ads drop ~30 days after stopping; EU ads kept 1 year |
Official API | Not publicly available | Yes, but commercial ads only if EU-run |
Best for | Seeing the real B2B ads competitors run on LinkedIn | Volume, keyword discovery, automated creative research |
About LinkedIn Ad Library
LinkedIn launched its Ad Library in February 2024 to meet EU Digital Services Act transparency rules. The archive reaches back further than the launch, covering ads served from June 1, 2023 onward. It is free, needs no login, and lives at linkedin.com/ad-library.
You can search by advertiser name, payer name, keyword, country, and date range. Each result shows the creative itself, the ad format, the advertiser, and the payer, which is the entity funding the ad and sometimes differs from the brand. For ads served in the European Union, LinkedIn adds an impression range and the targeting parameters the advertiser selected.
The strength for B2B is relevance. LinkedIn is the primary channel for reaching senior decision-makers, so its library holds the exact sponsored content, document ads, and thought-leader ads your competitors use to influence buying committees. If you want to know how a rival frames its value proposition to a VP of Marketing, this is the source.
Two limits matter. There is no spend or performance data on commercial ads, so you see what runs, not whether it works. And each ad stays visible for only one year after its last impression, which makes the library a rolling recent view rather than a permanent archive.
About Meta Ad Library
Meta launched its Ad Library in 2019, expanding an earlier 2018 political ad archive to cover all active ads, and it is the more mature tool. It is free, needs no login, and displays ads running across Facebook, Instagram, Messenger, and the Audience Network.
Search works two ways: by advertiser, using a brand’s Facebook page name to pull all active ads, and by keyword, using industry terms like "B2B software" to surface ads from multiple advertisers at once. Each ad shows creative assets, multiple creative variations from the same advertiser, the start date, the platforms it runs on, the advertiser’s page history, and a unique library ID.
For social issue, election, and political ads, Meta shows far more: demographic breakdowns by location, gender, and age, audience size and reach, total spend, last week’s spend, advertiser contact details, and whether the creative was digitally altered. Most B2B ads do not fall into these categories, so that richer data rarely applies to competitor research.
The advantage for B2B researchers is scale and tooling. Keyword search plus the official Ad Library API let you monitor a whole category or automate creative tracking, which LinkedIn does not support natively. The trade-off: Meta traffic skews to broad consumer reach, so the B2B signal is thinner than on LinkedIn.
LinkedIn Ad Library vs Meta Ad Library: search and filtering
Meta wins on flexibility. Keyword search lets you enter a category term and see every advertiser running ads against it, which is the fastest way to map a competitive set you do not already know. The API extends this to automated, repeatable monitoring.
LinkedIn has closed part of the gap. You can now search by advertiser, payer, keyword, country, and date, which is broader than the advertiser-only search it launched with. There is no public API, so category-level monitoring stays manual.
Winner: Meta, for keyword discovery and automation. If you already know the five competitors you care about, the difference narrows and LinkedIn is enough.
LinkedIn Ad Library vs Meta Ad Library: data depth
Both libraries withhold the number that matters most. Neither shows click-through rate, conversions, or return on ad spend for commercial ads, so you can never confirm what is actually converting.
Meta shows more of the surrounding context: multiple creative variations from the same advertiser and start dates. Seeing several variations can hint at what a competitor is testing, though the library does not label them as A/B tests. LinkedIn shows the creative and format, plus targeting parameters and an impression range for EU-served ads, which is a rough proxy for scale that Meta does not give on ordinary commercial ads.
Winner: a tie with a caveat. Meta gives more creative context; LinkedIn gives a thin targeting and reach signal in the EU. For a fuller view of budget and channel trade-offs, pair this with our guide on programmatic advertising vs LinkedIn Ads for B2B.
LinkedIn Ad Library vs Meta Ad Library: B2B relevance
This is where the comparison is decided for most B2B teams. B2B purchases involve a buying group of typically 6 to 10 stakeholders, and those stakeholders make professional decisions on LinkedIn, not on Instagram.
LinkedIn Ad Library therefore shows the creative that maps to your actual funnel: sponsored content aimed at job titles, document ads that gate a report, and thought-leader ads that borrow an executive’s credibility. Meta’s B2B inventory exists, mostly retargeting and top-of-funnel demand gen, but it is a smaller share of a consumer-dominated pool.
Winner: LinkedIn, decisively, for B2B competitor research. Meta becomes relevant if your competitors run meaningful retargeting or demand-gen campaigns on Facebook and Instagram.
LinkedIn Ad Library vs Meta Ad Library: archive and freshness
The two libraries retain ads differently. LinkedIn keeps each ad for one year after its last impression. Meta keeps ads served in the EU for up to a year, but non-EU commercial ads usually drop from the library within about 30 days of stopping.
So LinkedIn gives a steadier rolling year of history, while Meta outside the EU skews to what is live now. Neither lets you study a campaign a competitor ran two years ago. For live monitoring of what is running today, both are current enough to catch a new campaign within days of launch.
Winner: a tie. Treat both as recent-activity monitors, not historical archives.
LinkedIn Ad Library vs Meta Ad Library: automation and scale
Meta offers an official Ad Library API, which LinkedIn does not. It lets a team pull ad data programmatically and track a category over time. The catch for B2B: the API returns political and social-issue ads globally, but ordinary commercial ads only when they ran in the EU, and access requires identity verification and app approval. LinkedIn offers no API, so research there is manual: open the library, search each competitor, and record findings by hand.
Winner: Meta on paper, because an API beats no API. But the EU-only scope for commercial ads narrows that edge for B2B teams whose competitors advertise mainly outside Europe. LinkedIn stays manual either way.
Who should use LinkedIn Ad Library
B2B marketers whose competitors advertise mainly to decision-makers on LinkedIn.
Teams researching a known, short list of rivals rather than mapping an unknown category.
Anyone who wants to study LinkedIn-native formats: document ads, thought-leader ads, and conversation ads.
Marketers in the EU who want the extra targeting-parameter and impression-range signal.
Who should use Meta Ad Library
Researchers who need keyword search to discover advertisers they do not already know.
Teams that want to automate creative monitoring through the official API.
Marketers tracking competitors with heavy Facebook and Instagram retargeting or demand-gen programs.
Anyone comparing volume and creative-variation patterns across a large advertiser set.
Where both libraries fall short for B2B, and what to do about it
Ad libraries answer one question: what creative is my competitor running? They cannot answer the two that decide pipeline. Which named accounts and people is that competitor reaching? And once you know their creative, how do you reach the same decision-makers yourself?
Creative transparency without targeting or performance data is a starting point, not a strategy. This is the boundary where free research ends and paid intelligence and targeting begin.
A few categories of paid tools pick up where the libraries stop. 6sense is strong at predictive intent: it flags which accounts are researching your category, so you learn who is in-market, not just what ads exist. Demandbase brings comprehensive account intelligence and an ad network for reaching target accounts. Influ2 pioneered contact-level display advertising, letting you serve ads to named individuals rather than broad segments. Each is a genuine step beyond a library. But each also leaves you to run the creative, the outreach, and the content yourself.
Hey Sid closes the loop between research and action. Where a library shows you a competitor’s ad, Hey Sid targets the same named decision-makers with a coordinated system: Always On for person-level advertising, Precision Connect for automated LinkedIn outreach, and Authority Builder for done-for-you thought leadership. Together they form The Influence Loop, run against the same individuals over 60 to 90 days.
Why it works: the sequence is designed so that by the time Precision Connect sends a message, the prospect has already seen the ads and read the thought leadership. The outreach lands as a natural next step, not a cold interruption. Risk Ident reported 2.5x shorter sales cycles and 40% higher engagement, and remained GDPR compliant (client-reported). Mercuri International attributed one of its biggest deals in a decade to the program, with 85% reduced ad spend (client-reported).
This is contact-level marketing, not account-level guesswork. For the full mechanics, see contact-level advertising: how to target individual decision-makers in B2B.
See how it works: heysid.com/how-it-works
Verdict: which ad library wins for B2B competitor research
For B2B competitor research, LinkedIn Ad Library wins on the axis that matters most: relevance. It shows the real ads your competitors run to the decision-makers you are trying to reach. Meta Ad Library wins on tooling, with keyword search, an API, and richer creative context across four platforms.
The practical answer: open LinkedIn first to study what rivals say to buyers, then use Meta to widen the net and automate monitoring. Just remember that both stop at creative. Knowing a competitor’s ad is not the same as reaching their buyers or proving what converts. To turn competitive research into pipeline, you need person-level targeting and a coordinated follow-through. Compare the paid landscape in our roundup of the best programmatic advertising platforms for B2B.
Book a demo: heysid.com/demo
For a deeper single-tool walkthrough, see LinkedIn Ad Library: How to Research Competitor Ads 2026.
FAQ
Is the LinkedIn Ad Library or Meta Ad Library better for B2B competitor research?
LinkedIn Ad Library is better for pure B2B relevance because it shows the ads competitors run to decision-makers on the primary professional platform. Meta Ad Library is better for discovery and automation, thanks to keyword search and an official API. Most B2B teams start with LinkedIn and use Meta to broaden the picture.
Can you see how much a competitor spends in either ad library?
Not for standard B2B ads. Neither library shows spend, click-through rate, or conversions for ordinary commercial campaigns. Meta discloses spend only for social issue, election, and political ads, which rarely apply to B2B. Both libraries show what is running, not whether it is working.
How far back do the ad libraries go?
LinkedIn keeps each ad for one year after its last impression, giving a steadier rolling year of history. Meta keeps ads served in the EU for up to a year, but non-EU commercial ads usually drop from the library within about 30 days of stopping. Treat both as recent-activity monitors, not deep historical archives.
Does the Meta Ad Library cover Instagram as well as Facebook?
Yes. The Meta Ad Library shows ads across Facebook, Instagram, Messenger, and the Audience Network while campaigns are active. You can see the same advertiser’s creative across all four placements in one search.
How do I spy on competitor LinkedIn ads without a login?
Go to linkedin.com/ad-library and search by advertiser, payer, keyword, country, or date. No LinkedIn account is required. You will see each competitor’s live creative and format, plus targeting parameters and an impression range for ads served in the EU.
Sources
European Commission, "Digital Services Act: transparency of online advertising"
SuperAds, "Meta Ads Library: How to Find Any Facebook or Instagram Ad (2026)"
Related: LinkedIn Ads Strategy for B2B | Programmatic Advertising vs LinkedIn Ads for B2B | Best Programmatic Advertising Platforms for B2B
