AdTech.dev Ad Inspector

Monitor GAM (GPT), Prebid.js, Amazon A9 and more — slots, bids, analytics, verification, and consent.

AdTech.dev Ad Inspector gives publishers, ad ops teams, and developers real-time visibility into the ad tech running on any page. Monitor slots, auctions, bids, targeting, consent, and verification — all from a single popup. Google Ad Manager (GPT) Live view of all ad slots with fill status, declared and rendered sizes, line item/creative/advertiser IDs with direct links into Google Ad Manager. Page and slot targeting displayed with search and filtering. Slot refresh, set targeting, and GPT Debug Console controls built in. Prebid.js Multi-instance header bidding inspector. View all auctions per ad unit, bid responses with CPM bars, win/timeout/no-bid status, bidder stats (avg CPM, p95 TTR, win rate), oRTB2 first-party data, and configuration. Optimise recommendations highlight slow bidders, revenue leakage, and timeout tuning. Amazon TAM (A9) Track apstag bids natively — price buckets, slot mapping, CPM analysis. Distinguishes native TAM bids from Prebid TAM adapter bids. Video IMA SDK, JW Player, and Video.js ad event capture with player lifecycle tracking. Brand Safety & Verification IAS risk scores across brand safety categories (adult, alcohol, violence, etc.), viewability predictions, and fraud signals. DoubleVerify classification data. Mantis contextual targeting, sentiment analysis, emotion breakdown, and brand safety ratings (GREEN/AMBER/RED). DMP Lotame audience segments, profile ID, and configuration. Permutive real-time segments, identity, and SDK config. LiveRamp, BlueKai, and Krux detection. Consent TCF v2 (purpose consents, vendor consents, Google vendor 755), USP (CCPA string), and GPP (Global Privacy Platform) — all in one view. Troubleshoot & Diagnostics Revenue and delivery analysis: fill rate, response timing, header bidding coverage, refresh policy, SRA detection, and page targeting gaps. On-page slot highlighting scrolls to and outlines any ad slot. Detects slots removed from the DOM or hidden via CSS. GPT Debug Console launcher. Filters & Search Filter slots by status (Filled, Empty, Removed, Hidden, Pending), size, or bidder coverage. Full-text search across slot IDs and ad unit paths. Integrations Overview Auto-detected tech stack grid showing all vendors across Ad Server, Header Bidding, Verification, DMP, Analytics, and Video categories. 28 Languages Full interface translation: English, Arabic, Chinese, Danish, Dutch, Estonian, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese, and more. Additional Features • Three-tier plan system (Basic / Standard / Pro) — all currently free • Beta mode for early access to experimental features • Settings pushed to the page in real-time (consent gate, log level) • SPA support — automatic reinitialisation on single-page app navigations • In-page data store survives service worker suspension • Versioned update welcome screen for new feature announcements Built by adtech.dev — a small team of ad tech engineers who needed better tooling and decided to build it. More details: https://adtech.dev/tools/adtech-ad-inspector/