How to Add ads.txt on Blogger in 2026

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If you use Google AdSense or another advertising partner on a Blogger site, an ads.txt file can help buyers identify which companies are authorised to sell your ad inventory. It is a small text file, but a missing or incorrect entry can lead to warnings in an advertising dashboard or reduce the number of eligible ad buyers.

The good news is that Blogger hosts the file for you. You do not need FTP, a separate hosting account, or a plugin. You only need the exact seller record supplied by your advertising provider and access to the correct Blogger blog.

What ads.txt does

Ads.txt means "Authorized Digital Sellers." It is an IAB Tech Lab standard that publishes a list of companies allowed to sell advertising for a website. It does not guarantee approval for AdSense, increase traffic, or raise revenue by itself. It simply makes your advertising relationships more transparent and helps reduce counterfeit inventory.

The typical AdSense line looks like this:

google.com, pub-XXXXXXXXXXXXXXXX, DIRECT, f08c47fec0942fa0

Replace the X characters with your own AdSense publisher ID. Keep the pub- prefix, commas, and spacing. Never copy a publisher ID from another site. If you use another network, ask that network for its official ads.txt record and add it only if you actually work with that provider.

Add ads.txt in Blogger

  1. Sign in to Blogger with the Google account that manages your site.
  2. In the Blogger dashboard, choose the blog you want to edit. Double-check the blog name before changing settings.
  3. Open Settings in the left-hand menu.
  4. Scroll to the Monetization section.
  5. Turn on Enable custom ads.txt.
  6. Select Custom ads.txt.
  7. Paste the exact line or lines supplied by AdSense and your other legitimate ad partners.
  8. Click Save.

If several providers are authorised to sell your inventory, put each record on its own line. Do not add random networks, affiliate programs, or "recommended" lines from an online template. An ads.txt record should describe a real business relationship.

For AdSense, you can usually find the suggested record in the AdSense notification or in the ads.txt area of your account. Your publisher ID is also shown in AdSense under account information. Treat it as business information, not as a password; your password, two-factor codes, and recovery details must never be pasted into ads.txt.

Check that the file is live

After saving, open this address in a browser, replacing the example domain with your own:

https://yourblog.blogspot.com/ads.txt

If you use a custom domain, check the custom-domain version as well. The page should show plain text containing the record you added. If it still returns an error or an old version, wait and try again: Blogger, caches, and advertising crawlers may not update at exactly the same time.

You can also return to AdSense and use its option to check for updates, when available. Detection is not always immediate, so do not repeatedly edit the file or paste duplicate lines while waiting. Keep a copy of the exact records you approved for your site.

Common mistakes to avoid

Using the wrong publisher ID: AdSense IDs are tied to an account. Copy yours carefully, including pub- and all digits.

Putting the code in a post: Ads.txt belongs at the site-level /ads.txt address. A blog post, HTML gadget, or robots.txt entry is not a substitute.

Overwriting a provider's record: If an existing file contains a legitimate line, preserve it unless the provider tells you to remove it. Add new lines separately.

Expecting instant earnings: Ads.txt is not a monetization switch. You still need an eligible site, a valid AdSense setup, policy compliance, and ad placements that work for readers.

Ignoring policy requirements: Do not click your own ads, encourage others to click them, or publish prohibited content to chase impressions. Follow the current Blogger and AdSense publisher policies.

Final checklist

Confirm that custom ads.txt is enabled, your publisher ID is yours, every line came from a real provider, and /ads.txt displays the expected text. Recheck after changing domains, switching ad partners, or closing an account. This simple maintenance step keeps your Blogger advertising setup clearer and more reliable in 2026.

Links and dashboard labels can change. Always follow the latest instructions from Blogger, AdSense, and your advertising provider.

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