Deep Search - Data Layer & Storage Explorer
marczewski.me.uk · Developer Tools
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Description
Advanced search tool for exploring JavaScript data layers and browser storage (localStorage, sessionStorage, cookies) Deep Search — Data Layer, Storage & DOM Inspector Developer tool for inspecting JavaScript data layers, browser storage, cookies, and DOM elements — with advanced search, real-time monitoring, and instant copy tools. Deep Search is built for developers, marketers, and QA engineers who need to quickly find, inspect, and debug data on any website. Powerful enough for complex GTM/GA4 audits, simple enough to use in seconds. == Features == ✓ Data Layer Search — Deep traversal of the window object with configurable depth (up to 20 levels). Results are ranked by relevance so the most useful matches appear first. ✓ Storage Inspector — Search cookies, localStorage, and sessionStorage together. Decode Base64 and JSON values inline with one click. View full cookie metadata: expiry, domain, path, HttpOnly, Secure, and SameSite flags. ✓ DOM Search — Find elements by tag, text content, or both, including inside Shadow DOM and iframes. Highlights matches on the page with a visual flash. ✓ dataLayer Monitor — Capture dataLayer.push() events in real time. Opens with an instant snapshot of events already in the dataLayer — so you see what happened before you opened the tool, not just what happens next. ✓ Search History — Your last 5 searches per tab are saved as one-click chips, persisted across page loads. ✓ Filter Within Results — Narrow down large result sets without re-running the search. ✓ Object Exploration — Drill into any nested object directly from search results. ✓ Smart Copy Tools — Copy values, object paths, or ready-to-paste JavaScript snippets (e.g. localStorage.getItem("key")). ✓ Export — Save results as JSON or CSV. ✓ Non-intrusive UI — Shadow DOM isolation means the panel never conflicts with the page's own styles. Draggable, minimisable, and fullscreen-capable. == Perfect for == • Web Developers — debug GA4 / GTM data layer events and validate tracking implementations • Digital Marketers — verify conversion tracking, e-commerce events, and campaign parameters • QA Engineers — test data persistence, validate storage, and audit third-party tags • Data Analysts — extract and inspect website data structures == Privacy & Security == Deep Search operates entirely within your browser. It does not collect, transmit, or store any data from the pages you visit. All analysis runs locally on your machine. == Getting Started == 1. Install the extension 2. Navigate to any website 3. Click the Deep Search icon in your toolbar 4. Start exploring — Data Layer, Storage, DOM, or Monitor == Help & Support == Documentation, examples, and support: https://github.com/daverage/DeepSearch If Deep Search helps your workflow, a 5-star review is always appreciated!