Shumway SEO Toolkit

About

Shumway SEO Toolkit is a Chrome extension for on-page SEO built by a working enterprise Growth/SEO PM. It surfaces technical, content, schema, link, image, social, SERP, performance, and style data in one place. No tracking, no accounts, no background crawling, no third-party data sharing.

Built for SEOs, product managers, and site teams who need to inspect pages quickly, copy the data they need, and export it as CSV, TSV, JSON, or Markdown.

FEATURES

🔍 Overview and Indexability
See the current URL, canonical, robots meta, X-Robots-Tag, robots.txt match, title, description, H1, language, technical basics, discovery links, and review items in one workspace.

📝 Title and Description Checks
Review title and meta description text with character counts and pixel-width estimates to spot truncation issues.

📋 Heading Review
Inspect rendered headings, identify H1 count issues, copy individual headings or the full outline, and export to CSV, TSV, JSON, or Markdown.

🔗 Link Inventory
Review internal, external, follow, nofollow, sponsored, UGC, empty-anchor, duplicate-anchor, and unsafe blank-target links with sorting, copy controls, and export options.

🖼 Image Inventory
Preview rendered images and inspect alt text coverage, lazy loading, missing dimensions, duplicate sources, and image URLs. Copy URLs, export image data, or download images as a ZIP.

🗂 Structured Data
Detect JSON-LD, Microdata, and RDFa. Review schema blocks, copy or export structured data, and open the current page in Schema Validator or Google Rich Results Test.

🍞 Breadcrumb and Schema Checks
Surface common structured-data issues including missing breadcrumb names, item URLs, positions, and non-sequential breadcrumb positions.

📣 Social Preview
Inspect Open Graph and X/Twitter metadata, copy individual fields, export social metadata, and preview how social cards may appear.

✏️ Editable SERP Preview
Test title, URL, and description changes in a Google-style snippet preview with character and pixel counts.

⚡ Performance Signals
Capture lightweight local Web Vitals signals including LCP candidates, layout shift sources, and interaction candidates where browser APIs allow.

🎨 Style Tools
Extract fonts, CSS variables, stylesheets, and page colors. Use the color picker to capture HEX, RGB, and HSL values.

🛠 Webmaster Utilities
Open Google Search Console and Bing Webmaster Tools shortcuts for the current site, including compare-helper tools for supported performance reports.

↗️ External Lookup Shortcuts
Open the current page or domain in Ahrefs, Archive.org, Moz, Semrush, Similarweb, Google Image Search, Schema Validator, and Rich Results Test.

📤 Export Formats
Download overview, headings, links, images, schema, social, and full page data as CSV, TSV, JSON, or Markdown.

🖱 Right-Click SEO Tools
Access common workflows from the context menu: open the SEO workspace, highlight nofollow links, run image searches, open external lookups, and more.

HOW TO USE IT

1.  Open any page you want to inspect.
2.  Click the Shumway SEO Toolkit icon in your Chrome toolbar.
3.  Use the left-side sections to review Overview, Headings, Links, Images, Schema, Performance, Social, Style, SERP, Webmaster Tools, and Exports.
4.  Copy individual fields or download the data in the format you need.

PRIVACY AND SECURITY 🔒
Page data is read locally from the current tab and only when you choose to use the extension. No analytics, no tracking, no accounts, no remote data collection. Exports are generated locally. External lookup buttons open third-party sites only when you click them.