Shumway SEO Toolkit

Fast, private on-page SEO data, exports, schema, links, images, and SERP previews for working SEOs.

Shumway SEO Toolkit inspects the current browser tab and shows page-level signals in one workspace. Open it when you need it. There is no account, and analysis never leaves your machine. FEATURES 🔍 Overview See how the page identifies itself: URL and canonical, title and description, language, H1, robots meta, response headers, and a short list of review items. 📈 Web Vitals Measure this page in your browser, then optionally refresh Chrome UX Report field data and PageSpeed Insights lab data. Responses stay on your device until you refresh again. 📋 Headings and Links Walk the rendered heading outline and the link list, including empty or duplicate anchors. Filter, sort, copy, or save the rows you care about. 🖼 Images Review rendered images, alt text, missing dimensions, and duplicate sources. Preview files, copy URLs, and save a ZIP of selected images. 🗂 Structured Data Find JSON-LD, Microdata, and RDFa on the page, inspect parse warnings, and copy a block as pretty JSON. 🤖 Robots Tools View the live robots.txt file, test a path against grouped crawlers or a custom user-agent, and see which rules matched. ✏️ SERP Previews Edit desktop and mobile search-result previews and save a PNG or WebP of the layout you want. ♿ Accessibility and Color Inspect the rendered accessibility tree, including landmarks and controls. An optional colorblind-friendlier palette makes issue marks easier to tell apart. 🎨 Social and Style Preview Open Graph and X/Twitter tags, then inspect fonts, CSS variables, page colors, and stylesheets. 🛠 Webmaster Tools Open shortcuts for the current URL or site. Those sites load only when you click them. ⚙️ JavaScript Testing Turn JavaScript off for the current site, reload, and compare what changed. 📦 Exports Save tables, page copy, image archives, and preview images in the browser. Nothing is uploaded to Shumway for those files. PRIVACY 🔒 The extension reads the active tab only after you use it. It does not send page content to Shumway servers or record analytics about your browsing.