adWMG Checker: ads.txt/sellers.json

Validate ads.txt and app-ads.txt files, cross-reference seller IDs with sellers.json, detect errors, and analyze SPO metrics

adWMG Checker is a Chrome extension for inspecting and validating ads.txt, app-ads.txt, and sellers.json files. It helps publishers, ad operations teams, and programmatic advertising professionals review seller information, identify common errors, and analyze advertising supply paths. Key features: - ads.txt & app-ads.txt inspection — Quickly access and review advertising authorization files on websites. - sellers.json verification — Cross-reference seller IDs with records in your selected sellers.json file to verify seller information. - Error detection — Identify duplicate entries and common formatting issues. - DIRECT / RESELLER analysis — Review the distribution of direct and reseller relationships. - Owner and manager domains — Detect and display OWNERDOMAIN and MANAGERDOMAIN information when available. Designed to simplify routine advertising supply chain checks and make ads.txt analysis more accessible. Developed by adWMG — https://adwmg.com