Enter your AdSense Publisher ID and get the exact ads.txt line to upload — no guessing the format, no copy-paste errors.
ads.txt (Authorized Digital Sellers) is an industry-standard file that tells advertisers and ad exchanges which companies are actually allowed to sell ad space on your site. Without it, some advertisers won’t bid on your inventory at all, since they can’t verify you’re a legitimate seller — which can quietly reduce your AdSense earnings even if your account is fully approved and running normally.
It’s a one-time setup per site. Once it’s live and correctly formatted, you generally don’t need to touch it again unless you add another ad network later.
Add this line as a new line in your existing file rather than replacing it — ads.txt files can list multiple authorized sellers at once, one per line.
ads.txt isn’t typically an approval requirement itself, but running without it once you’re live can reduce the advertiser demand competing for your ad space, which can lower your earnings even after approval.
No. Everything runs in your browser — nothing you enter is saved, logged, or sent anywhere. Your Publisher ID isn’t a secret credential, but we still don’t store it.