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Description
Fast, private on-page SEO data, exports, schema, links, images, and SERP previews for working SEOs. Shumway SEO Toolkit is a local-first browser extension for page-level SEO inspection. It gives SEOs, product managers, content teams, and developers a structured workspace for the current page. It runs on demand, requires no account, and keeps page analysis in your browser. Open the toolkit on any page to inspect rendered metadata, indexability signals, technical response data, discovery signals, local Core Web Vitals, CrUX field data, CrUX history, PageSpeed Insights lab diagnostics, headings, links, images, structured data, social metadata, page styles, accessibility structure, SERP previews, robots.txt behavior, webmaster shortcuts, and local SEO tools. Most page analysis runs locally in your browser. The Web Vitals workspace can request Google CrUX and PageSpeed Insights data for the current URL, cache those responses locally, and refresh them when you choose. All exports are generated locally in your browser. Save page data as CSV, TSV, JSON, Markdown, TXT, page-copy TXT/HTML/DOCX/ODT documents, HTTP trace reports, Web Vitals reports, image ZIP files, accessibility JSON, robots test results, schema JSON, or SERP preview images. FEATURES 🔍 Overview Current URL, canonical URL, robots meta, X-Robots-Tag, title, description, language, H1, HTTP status codes, technical response headers, discovery signals, source-vs-rendered checks, and prioritized review items in one workspace. 📈 Web Vitals Local Core Web Vitals, CrUX current field data, CrUX history charts, URL-level vs sitewide labels, PageSpeed Insights lab data, mobile and desktop views, refresh controls, and copy/export actions. 📋 Headings and Links Rendered heading outline, internal and external link data, rel attributes, empty anchors, duplicate anchors, filtering, sorting, selected-result downloads, status codes, and copy/export controls. 🖼 Images Rendered image list, alt text coverage, lazy loading, missing dimensions, duplicate sources, image previews, URL copy, filtering, sorting, selected-result downloads, data export, and ZIP download. 🗂 Structured Data JSON-LD, Microdata, and RDFa detection, schema block copy/export, local parse status, Google rich-result guidance, warning/error chips, highlighted source lines, filters, sorting, and pretty JSON output. 🤖 Robots Tools View live robots.txt, test any URL or path, use grouped crawler selections for core, detected, AI, and other crawlers, add a custom user-agent, review matched and ignored rules, edit robots.txt locally, and download selected crawler results. ✏️ SERP Previews Editable desktop and mobile Google-style previews, compact rich-result-style modules, and PNG/WebP downloads for desktop or mobile previews. ♿ Accessibility and Color Rendered accessibility tree with landmarks, controls, images, issue detection, multi-select filters, sorting, expand/collapse controls, locator copy, and detailed JSON export. Includes an optional colorblind-friendlier palette with clearer non-color issue indicators. 🎨 Social and Style Open Graph and X/Twitter metadata previews, fonts, CSS variables, page colors, stylesheets, and local color tools. 🛠 Webmaster and SEO Tools Open Google Search Console, Bing Webmaster Tools, PageSpeed, Lighthouse, DebugBear, GTmetrix, third-party backlink and rank-tracking tools, Archive.org, site search, image search, and other fast lookup tools for the current page or site. ⚙️ JavaScript Testing Toggle JavaScript for the current site, then reload and compare how the page changes. 📦 Exports Download focused reports for issues, metadata, technical signals, discovery signals, HTTP trace data, Web Vitals, headings, links, images, schema, robots, social metadata, style data, SERP previews, tools, accessibility data, page copy, and full-page audits. PRIVACY 🔒 Page data is read locally from the active tab only when you use the extension. The toolkit does not send page data to Shumway servers or collect analytics about your browsing. Web Vitals can request Google CrUX and PageSpeed Insights data for the current URL. External lookup buttons open third-party websites only when you click them.