ads.txt and sellers.json guides
Buyers check a few small public files before they bid on your inventory. If they are missing, out of date or copied wrong, demand quietly skips you and nothing on the site looks broken. These guides cover ads.txt for websites, app-ads.txt for apps and CTV, and the sellers.json files that confirm who is selling.
Start here, then go deeper
- How to Set Up ads.txt and Fix Common Errors
- How to Set Up app-ads.txt and Fix AdMob Errors
- sellers.json Explained and How to Check Your Entry
Want a hand with your own setup? See how MH AdX helps with Monetization Partner Onboarding Checklist.
How to Set Up ads.txt and Fix Common Errors
A plain-English guide to ads.txt: what each line means, where the file goes, how to add partner lines, and how to fix the warnings that cost publishers revenue.
Read the guide · 11 min →
How to Set Up app-ads.txt and Fix AdMob Errors
What app-ads.txt is, how to create and host it on your developer website, the line format, and how to fix AdMob errors such as app-ads.txt not found.
Read the guide · 12 min →
sellers.json Explained and How to Check Your Entry
What sellers.json is, what each field means, how it pairs with ads.txt, and how publishers check and fix a confidential or missing sellers.json entry.
Read the guide · 10 min →