Mass Ads & App-Ads Checker

Bulk validate ads.txt and app-ads.txt files with deterministic URL probing, IAB line parsing, and CSV export.

Mass Ads & App-Ads Checker is a professional AdOps utility designed to streamline the bulk validation of ads.txt and app-ads.txt files. Ad operations teams, publishers, and programmatic buyers frequently need to verify seller authorization across dozens or hundreds of domains. This extension eliminates the need for manual, time-consuming checks by automating the discovery and parsing process directly within the browser. Key Features: • Bulk Scanning: Paste a list of domains and validate them all simultaneously. • Smart Discovery: Automatically probes multiple URL variants (HTTP/HTTPS, with and without the 'www' prefix) to locate the active ads file, minimizing false negatives. • IAB Standard Parsing: Accurately parses the file contents according to Interactive Advertising Bureau (IAB) standards. It filters out comments, detects false-positive HTML error pages, and precisely counts valid DIRECT and RESELLER records. • CSV Export: Download a consolidated diagnostic report containing the resolved file URLs, scan statuses (Valid, Empty File, Error), and exact line counts for easy sharing, BI ingestion, or auditing. • Privacy First: All processing happens locally in your browser. No data or domain lists are sent to external tracking servers. • Customizable UI: Includes a persistent Light/Dark mode toggle for comfortable viewing during long auditing sessions. Perfect for programmatic advertising professionals conducting routine compliance audits, inventory quality checks, or onboarding new publisher partners.