SEO Scrubbox
On page SEO diagnostics with view source vs rendered comparison, built for search engines and AI crawlers
SEO Scrubbox is a lightweight yet advanced Chrome extension built for SEO professionals, developers, and technical marketers who need accurate, real-world insight into how a page behaves for search engines and AI crawlers.
It combines instant on-page analysis with deeper HTTP-based audits, showing both view-source and rendered states so you can understand exactly what Googlebot, Bing, and AI systems actually see.
Designed for modern SEO and AI search optimisation workflows, SEO Scrubbox helps diagnose canonical inconsistencies, rendering differences, structured data quality, crawl signals, and sitemap visibility without leaving the page you are auditing.
What it does
SEO Scrubbox focuses on signal clarity over noise. It surfaces the technical SEO and crawl signals that influence indexing and machine interpretation, then shows how those signals change (or stay stable) after JavaScript rendering.
Fast checks with rendered awareness
- Detects current URL and full redirect chains in correct order
- Shows real HTTP status codes with colour-coded interpretation
- Compares canonical tags before and after JavaScript rendering
- Flags canonical changes introduced by JS
- Detects meta robots and Googlebot directives
- Highlights noindex, nofollow, X-Robots-Tag, and conflicting signals
- Identifies title and meta description changes caused by JS
Deep technical audit
When you need more than a quick read, the deep audit runs controlled HTTP-based checks to validate crawl paths, sitemap environments, internal linking health, and hreflang integrity.
- Recursively discovers and evaluates sitemaps declared in robots.txt
- Detects sitemap index vs URL set structure
- Shows lastmod values when available
- Applies intelligent safety limits for very large sitemap environments
- Validates hreflang status codes
- Checks hreflang return link reciprocity
- Audits internal links with status, redirect detection, and rel="nofollow" flags
- Adjustable internal crawl limit for controlled analysis
Rendered vs non-rendered comparison
Modern sites often rewrite key signals after JavaScript execution. SEO Scrubbox makes those shifts explicit so you can diagnose issues like canonical drift, missing internal links, or content that only appears after rendering.
- Compares internal link count before and after rendering
- Compares word count before and after rendering
- Helps identify JavaScript SEO issues and hidden content
Structured data inspection
SEO Scrubbox detects JSON-LD on the page, validates it per script, and expands each schema into a readable structure. This helps you verify both correctness and consistency for indexing and AI entity understanding.
- Detects all JSON-LD scripts on the page
- Validates JSON format per script
- Expands and displays each schema in a structured, readable format
- Flags invalid JSON-LD
- Supports complex schema types including Organization, Product, FAQPage, CollectionPage, BreadcrumbList, ItemList and more
- Extracts structured data in a way that aligns with AI search ingestion and entity understanding
AI search optimisation ready
SEO Scrubbox is built with modern AI-driven search in mind. It helps you optimise for systems that consume content as structured signals, not just visual pages.
- Google Search generative results
- Bing AI
- AI overviews and answer engines
- LLM-based crawlers and AI agents
- Entity clarity and structured data consistency
- Canonical stability for AI indexing
- Clean crawl signals for machine-readable interpretation
By comparing view-source HTML and rendered DOM signals, it helps ensure your pages remain consistent and interpretable by both traditional search engines and AI systems.
Core Web Vitals (CrUX integration)
SEO Scrubbox includes an optional Chrome UX Report integration so you can view real user metrics directly in your audit workflow.
- Optional Google Chrome UX Report integration
- Uses your own API key
- Displays real user LCP, INP, and CLS data
Why use SEO Scrubbox
- Runs locally in your browser, no external servers
- No page reload required
- Automatic icon colour changes based on indexability
- Designed for real technical SEO debugging
- Ideal for diagnosing canonical drift, JS rewriting, sitemap issues, and redirect chains
- Fast enough for daily audits, precise enough for advanced investigations
Feedback and issue reporting
If you have feedback, feature requests, or want to report an issue with the extension, email: contact@scrubnet.org
If you are looking for privacy details, please refer to the dedicated privacy policy page for SEO Scrubbox.
Make crawl signals explicit
SEO Scrubbox helps you see what bots actually see, spot differences introduced by rendering, and validate technical signals that affect indexing and AI interpretation.