Paid advertising is the part of the strategy a competitor invests in most and that shows up least in the organic feed. In 2026, Meta legally requires every Page to publish its active ads in the Ad Library — a public, free database covering Facebook, Instagram, Messenger and WhatsApp.
100%
of active ads on Meta are public in the Ad Library — a global regulatory requirement since 2023.
Meta Transparency Center, 2024
What you see (and what you don’t)
Ordinary commercial ad
- Creative (image, text, CTA)
- Start and end date
- Platforms (FB, IG, Messenger, WhatsApp)
- Target country, language
- No impressions, no spend, no audience
Political/social ad
- Everything from the ordinary ad, +
- Spend range (R$ 100-499, R$ 500-999...)
- Impressions range
- Demographics of the audience reached
- Identified sponsor
For ordinary retail you stay in the left-hand panel — but that is already much more than reading only the organic feed. Creative frequency, duration, platform mix and message variation tell you what the competitor is testing.
3 questions the Ad Library answers
- Did the competitor go into a campaign without posting? If they have 12 active ads and the organic feed is silent, they decided to run paid-only — usually to test creatives or clear stock without drawing public attention.
- Which mechanic are they pushing today? Coupon? Free shipping? Combo? The ad copy tells you, and the Ad Library shows all the variations live — not just the creative the feed algorithm served you.
- How long does the creative survive? An ad that stays 15+ days live = it is converting. An ad that leaves in 3 days = the test failed. That signal is free and they have no way to hide it.
How to find the Page ID (the step that trips everyone up)
Where the Facebook Page ID is
Step 1
Open the competitor’s Page on Facebook
No need to be logged in. It works on desktop or mobile.
Step 2
Go to “About” → scroll to “Page Transparency”
On mobile, tap the three dots in the header and look for “About this Page”.
Step 3
Copy the number shown under “Page ID”
Typical format: 15 to 20 digits. E.g.: 113499698688041 (Americanas).
Step 4
Go to facebook.com/ads/library/?id=<your-id>
Or paste the ID into the search field of the official Ad Library.
What NOT to expect from the Ad Library
Minimal usage routine (10 min/week)
- List 5 to 10 direct competitors with their Page IDs.
- Every Monday, scan the new creatives from the previous week.
- Note: mechanic (coupon, shipping, combo), duration, dominant platform.
- Compare with your week: did you react? Do you need to react? Or is it noise?
- Archive the screenshots — in 6 months you will have a history they don’t have.
Referências e leitura complementar
- Meta (2024). Ad Library API — Public Documentation. Meta Transparency Center link .
- Meta (2024). Transparency Report — Ads on Issues, Elections and Politics. Meta link .
- eMarketer (2025). Digital Ad Spend in Latin America — Brazil Forecast 2026. Insider Intelligence.
- Conversion (2024). Yearbook of Brazilian E-commerce — Paid Media in Retail. Conversion / B-Capital link .
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