Shumway SEO Toolkit door Brian Shumway

Shumway SEO Toolkit is a local-first Firefox add-on for page-level SEO inspection. It gives SEOs, PMs, content teams, and developers a structured workspace for analyzing the current page, with no account, background crawling, or recurring data collection.

Open the toolkit on any page to inspect metadata, indexability signals, HTTP status and redirect data, headings, links, images, structured data, social tags, styles, accessibility structure, Web Vitals, SERP previews, robots.txt behavior, and local SEO tools in one workspace.

All exports are generated locally in your browser. Save page data as CSV, TSV, JSON, Markdown, page-copy documents, HTTP trace reports, Web Vitals reports, image ZIPs, accessibility JSON, robots test results, schema JSON, or SERP preview images.

FEATURES

🔍 Overview
Review the URL, canonical, robots meta, X-Robots-Tag, title, description, language, H1, HTTP status codes, response headers, discovery signals, source-vs-rendered differences, and prioritized issues.

🔗 Headings & Links
Inspect rendered headings and internal or external links, including rel attributes, empty anchors, duplicate anchors, HTTP status results, redirect destinations, and final URLs. Filter, sort, retry, and export selected results.

🖼 Images
Review alt-text coverage, lazy loading, missing dimensions, duplicate sources, and image previews. Copy URLs, filter, sort, and export image data or ZIP archives.

🗂 Structured Data
Detect JSON-LD, Microdata, and RDFa. Copy or export schema blocks, review local parse status and Google rich-result guidance, inspect warnings and errors with highlighted source lines, and view formatted JSON.

🤖 Robots Tools
View live robots.txt, test any URL or path, and check grouped crawlers including Core, Detected, AI Search, AI Training, AI User Retrieval, and Other. Review matched and ignored rules, edit robots.txt locally, and export results.

✏ SERP Previews
Create editable desktop and mobile Google-style previews with compact rich-result modules. Download previews as PNG or WebP.

♿ Accessibility & Color
Review the rendered accessibility tree, including landmarks, controls, images, and detected issues. Filter, sort, expand or collapse details, copy locators, and export complete JSON. Includes an optional colorblind-friendly palette with non-color issue indicators.

🎨 Social & Style
Inspect Open Graph and X/Twitter previews, fonts, CSS variables, page colors, stylesheets, and built-in color tools.

📈 Web Vitals
Review local Core Web Vitals, optional CrUX field data, CrUX history, and PageSpeed Insights lab diagnostics. Refresh or export performance data, with remote responses cached locally when enabled.

🛠 Webmaster & SEO Tools
Open Google Search Console, Bing Webmaster Tools, PageSpeed, backlink and rank-tracking tools, Archive.org, site search, image search, and other shortcuts for the current page or site.

📦 Exports
Download focused reports covering issues, metadata, technical signals, discovery signals, HTTP traces, Web Vitals, headings, links, images, schema, robots, social tags, styles, SERP previews, accessibility data, page copy, or a full-page audit.

PRIVACY 🔒
Analysis runs locally in your browser. We do not collect page audit data, browsing history, exported files, inspected URLs, analytics, or usage data.

Network requests occur only when you trigger an action, such as fetching robots.txt, checking page source or response data, downloading image assets, requesting optional Google CrUX or PageSpeed data, or opening a third-party SEO tool.

WHAT’S NEW IN 0.1.8:
🔗 Added on-demand link checking for batches of up to 250 URLs.
📊 Added exact HTTP status codes, redirect results, observed final destinations, and retry controls.
🏷 Added inline link-status badges, status filters, rate-limit feedback, and clearer no-response and 4xx handling.
💾 Added persistent link-check sessions, incremental result rendering, and link-status exports.
🧩 Added source-linked schema diagnostics and improved breadcrumb validation.
🤖 Improved robots crawler filtering across Core, Detected, AI Search, AI Training, AI User Retrieval, and Other groups.
♿ Clarified accessibility-tree locations and improved issue locators with page and source URLs.
⚙ Added branded settings controls for HTTP status capture, PageSpeed auto-run, and Web Vitals cache management.