Discover the Undiscovered.
Elementary, my dear newsmap. GNMSherlock automatically fingerprints, crawls, and validates hidden Google News Sitemaps for any website in seconds.
The 5-Phase Discovery Engine
Deep Technical Capabilities & Lifecycle
Phase 1: Robots.txt & Feed Intelligence
Scans root robots.txt for explicit 'Sitemap:' declarations. Support for standard XML, indices, and Google News-accepted RSS 2.0 / Atom 1.0 feeds.
Phase 2: Modern CMS Fingerprinting
Instant detection of 20+ CMS platforms with specialized priority paths.
Phase 3: Deep Link & Discovery Crawl
Probes 10+ core path prefixes: /sitemap/, /news/, /feeds/, /rss/, /xml/, /home/, and more.
Phase 4: 500+ Global Pattern Library
Combines a massive library of filenames with automatic path prefixing.
Phase 5: Smart Variation & Fallback Logic
Pagination Support, Split-Sitemap Detection, and Fallback Audit logic.
The 'Smart Engine' (Level 6 Logic)
AI and Historical Inference Layer
Common Crawl CDX Engine
Queries massive public data archives for historical XML URLs.
Pattern Inference
A local 'brain' that extrapolates new paths based on already-found sitemaps.
Triple-AI Support
Integration for OpenAI, Google Gemini, and Anthropic Claude for deep analysis.
Pro Features (Advanced)
Batch Investigation Mode
Scan up to 100 domains in parallel. Upload CSV/Excel and export a complete news-landscape report in seconds.
Custom Feed Builder
Select your found sitemaps, apply keyword filters, and generate a unified, clean RSS/JSON feed.
Who is GNMSherlock for?
SEO Specialists
Track competitor news sitemap health and mapping.
News Publishers
Audit your own GNM configuration and 48-hour article freshness.
Growth Hackers
Discover high-authority news sources for content aggregation.
Journalists
Keep a pulse on specialized news indices across the web.
Support & Feedback
Have an idea or need help with a discovery? We're listening.
info@msquaredigitalhub.comPrivacy Disclosure
GNMSherlock is a client-side scanner. We do not collect, store, or transmit your browsing history, personal data, or found sitemaps to any external servers. All processing happens locally in your browser.
Standard Terms
This extension is provided "as is" for news discovery purposes. Users are responsible for complying with the target websites' robots.txt and crawling policies. Read our Privacy Policy.