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Debug and verify ad tag implementations on publisher websites. AdCheck – Ad Tag QA & Debugging Toolkit AdCheck helps developers, publishers, and QA teams validate ad implementations directly on live webpages. Quickly detect missing ad tags, troubleshoot setup issues, inspect network activity, and test custom overrides before problems reach production. Perfect for ad operations, monetization teams, and frontend developers working with ad tech integrations. Features 🔎 Ad Tag Validation Instantly verify whether required ad scripts, bundles, DOM elements, IDs, classes, and attributes are present on the page. 🧩 Floating Debug Widget An in-page helper widget that provides real-time feedback about ad-related elements and implementation status while browsing. 🛠 Site Overrides & Testing Tools Configure custom behavior per website to simulate or debug ad setups without modifying production code. • Element Picker – Visually select page elements for targeting overrides. • Custom HTML Injection – Inject HTML snippets directly into selected DOM locations. • Script Loader Injection – Add custom loader scripts before, after, or inside elements. • DOM Placement Controls – Insert content precisely where needed for testing. • Network Blocking – Block specific network calls. 🌐 Network Request Tracking Monitor ad-related network requests in real time with request history tracking to help debug loading and delivery issues. ⚙️ Configuration Management • Import/export configurations as JSON • Define custom bundles and script names • Track DOM IDs, CSS classes, and attributes • Save reusable debugging presets 🪟 Window Globals Inspector Inspect and monitor values from the page’s window object safely, including: • Deep-path access support • Dependency-aware “await bundle” tracking • Runtime variable inspection for ad libraries and integrations Usage • Use the popup toggle to enable or disable AdCheck globally. • Configure site-specific overrides from the “Current Site Override” section. • For inline script injection features, enable “Allow access to user scripts” in the Chrome extension settings. Built for Ad Tech Workflows AdCheck is designed to speed up QA, reduce debugging time, and improve confidence when deploying advertising integrations across environments. Open Source AdCheck is open source and transparent about everything.
May 15, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.