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A lightweight domain expiry & website tech stack inspector. Domain & Stack Inspector is a lightweight side-panel tool for anyone who checks websites for a living — developers, SEO/marketing consultants, agencies, or the curious. Open the side panel on any site to instantly see: Domain Details: Expiry date (colour-coded by urgency), registrar, domain age, and nameservers via public RDAP lookup. Hosting & Location: Provider (ISP/ASN) and server location via public geo-IP lookup. Tech Stack Detection: 46+ signatures covering popular frontend frameworks, major CMS/e-commerce platforms, payment gateways, chat widgets, marketing tools, analytics, and CSS frameworks. Server & Infra Signals: HTTP response headers (Server, X-Powered-By, CDN) to identify web servers, backend runtimes, and hosting CDNs. All DOM-based technology detection runs locally in your browser. The header module performs a single local fetch of the active page's URL to read response headers without requiring additional permissions. The only external calls are to rdap.org and ipwho.is.
Jul 28, 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.