ads.txt is a small text file placed at your site root. It allows ad platforms (like Google) to verify that the companies selling ads on your domain are authorized.
Why ads.txt matters
- Reduces spoofing and increases trust.
- Protects revenue by blocking unauthorized sales.
- Can improve demand quality and buying confidence.
Common mistakes
- Uploading it to the wrong location (not at the root).
- Wrong formatting: extra spaces/commas or incorrect publisher IDs.
- Duplicate files (ads.txt vs Ads.txt) creating confusion.
Fast check & generate
Use Dr AdsTxt to check your current file or generate a clean one with practical tips:
Quick tip
After updating ads.txt, give it some time, then re-check. Crawlers may not pick up changes instantly.