My SEO Toolkit: Extensions, People & Resources I Use
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.spc-tk .tk-intro{font-size:1.05em;opacity:.92}
.spc-tk h2{margin:2.1em 0 .5em;padding-bottom:.3em;border-bottom:2px solid var(--tk-line);font-size:1.5em}
.spc-tk h3{margin:0 0 .6em;font-size:1.05em;letter-spacing:.02em;text-transform:uppercase;opacity:.8}
.spc-tk .tk-cols{display:grid;grid-template-columns:1fr 1fr;gap:30px}
@media(max-width:820px){.spc-tk .tk-cols{grid-template-columns:1fr}}
.spc-tk ul.tk-list,.spc-tk ul.tk-res{list-style:none;margin:0;padding:0}
.spc-tk ul.tk-list li,.spc-tk ul.tk-res li{padding:9px 13px;margin:0 0 8px;border:1px solid var(--tk-line);border-radius:9px;background:var(--tk-soft)}
.spc-tk .tk-name{font-weight:700}
.spc-tk .tk-desc{display:block;font-size:.88em;opacity:.78;margin-top:3px}
.spc-tk .tk-pills{display:flex;flex-wrap:wrap;gap:9px}
.spc-tk .tk-pills a{padding:7px 14px;border:1px solid var(--tk-line);border-radius:22px;background:var(--tk-soft);text-decoration:none;font-weight:600}
.spc-tk ul.tk-res a{font-weight:600}
.spc-tk .tk-note{font-size:.9em;opacity:.7;font-style:italic}
.spc-tk .tk-count{font-size:.62em;font-weight:600;opacity:.55;vertical-align:middle;margin-left:8px;text-transform:none;letter-spacing:0}
This is the actual kit I reach for — the browser extensions, people, newsletters and dashboards I use to do technical SEO every day. No affiliate links, no padding: if it's here, it earns its slot on my toolbar. I keep this page current as the stack evolves.
Browser Extensions76 I run
Chromium (Vivaldi · Brave · Chrome)
- AMP ValidatorValidate AMP pages and pinpoint errors that GSC doesn't surface.
- Application Launcher For Drive (by Google)
- Bitwarden — Free Password ManagerMy LastPass replacement. Open-source password manager that actually respects privacy.
- Bubbles Screenshot & Screen Video RecorderScreenshot, screen-record, and annotate in one go.
- EverSync — Sync bookmarks, backup favoritesSync bookmarks across platforms.
- Export links of all extensionsExport the full list of installed extensions.
- Google Docs OfflineEdit Google Docs offline.
- Group Speed DialAccess favorite pages anytime in an organized grid.
- Keywords Everywhere — Keyword ToolFreemium SERP helper — search volume, CPC and competition data across 15+ sites (Google, YouTube, Amazon, GSC and more).
- Lighthouse for Google ChromeOpen-source, automated auditing for performance, quality and correctness.
- Link Redirect TracerAll-in-one redirect path analyzer — also reads HTTP headers, rel-canonicals, robots.txt, link power and link trust.
- OneTabToo many tabs? Collapse them to a list and reclaim browser memory.
- Print Friendly & PDFStrip the clutter to make any page printer- and PDF-friendly.
- Quick source viewerView the current page's HTML, JS and CSS fast.
- Save Tab Groups for Tab Session ManagerCompanion to Tab Session Manager for saving tabs by group.
- Schema Builder for Structured DataBuild validated schema markup for any page.
- SEO Pro ExtensionReal-time on-page SEO info — a SEOquake alternative.
- SEO Search Simulator by NightwatchSimulate a search from another country and language.
- SEOquakeKey SEO metrics for any page, plus an audit and a stack of other tools.
- AI EyesToggle JavaScript on/off in one click to see a page the way AI models do — stripped of dynamic, interactive content.
- Tab Session ManagerSave and restore window/tab state, with automatic saving.
- Web Cache ViewerCheck the cached version of any page.
- XML TreeDisplay XML data in a readable layout.
- NoFollowQuickly flag nofollow links on a page.
- GSC GuardianTrack and analyze Google core updates in real time so changes don't blindside you.
- View Rendered SourceSee how the browser turned the original HTML into a working DOM — including everything JavaScript changed.
- Google Search Console Date SelectorCompare periods in GSC and auto-generate the percentage changes.
- Core Web Vitals historyPull Core Web Vitals for any site going back up to 6 months.
- Web ArchivesView archived/cached versions across 10+ engines — Wayback, Archive.is, Google, Bing, Yandex.
- Universal Sitemap CheckerCheck status codes and canonical URLs for every URL in an XML sitemap.
- SEO Render Insight ToolSpot client-side-rendered content. Visualize CSR vs SSR with highlights and charts, and disable JS to test indexability.
- SEO Schema VisualizerVisualize JSON-LD schema markup at the click of a button.
- Agital — GSC CalculationsCalculate and display % change for clicks, impressions, CTR and position in GSC.
- Link RevealerShow any link's full URL on hover, colour-coded for safety.
- SEO CheckerLightweight helper for on-page SEO, page speed and security checks.
- Hreflang CheckerCheck hreflang tags on a page — confirm language code, region code and return links all match.
- Search Analytics for SheetsPull GSC data and auto-back it up straight into Google Sheets.
- SpeedVitalsPerformance measurement using Lighthouse for lab data and Chrome's CrUX API for field data.
- Sitemap ClusterizerSmarter XML sitemap analysis to streamline the workflow.
- ChatGPT Path by AyimaExtract insights from your ChatGPT conversations — queries, thoughts, products and sources.
- Rendering Difference EngineSee which SEO signals JavaScript adds, removes or alters in the HTML — without reading the code.
- Scrape SimilarTurn any page into structured data in a few clicks.
- AI Content Visibility Checker (by Adobe LLM Optimizer)One-click check of what LLMs can and can't actually read on any page.
- Shumway SEO ToolkitFast, private on-page SEO data, exports, schema, links, images and SERP previews for working SEOs.
Firefox
- Auto Tab DiscardSpeed the browser up and cut memory load when you've got a wall of tabs open.
- Bing
- EverSync — Sync bookmarks, backup favoritesSync bookmarks between Chrome, Firefox and Safari.
- floccus bookmarks syncEverSync complement — sync bookmarks across browsers via Nextcloud, WebDAV or Google Drive.
- Group Speed DialAccess favorite pages anytime in an organized grid.
- ImagusHover to enlarge images and play images/videos straight from links.
- Keywords Everywhere — Keyword ToolFreemium SERP helper — volume, CPC and competition across 15+ sites.
- LighthouseOpen-source, automated auditing for performance, quality and correctness.
- Link Redirect TracerAll-in-one redirect path analyzer — headers, canonicals, robots.txt, link power and trust.
- Old Reddit RedirectForce Reddit to load the old design — the new one is ugly and user-hostile.
- OneTabToo many tabs? Collapse them to a list and reclaim memory.
- Pretty XMLExcellent for reading XML sitemaps in Firefox.
- Reddit Enhancement SuiteRES — a suite of tools to upgrade the Reddit experience.
- Search by Image on GooglePowerful reverse image search across Google, Bing, Yandex, Baidu and TinEye.
- SEOquakeKey SEO metrics for any page, plus an audit and other tools.
- Tab Session ManagerSave/restore window and tab state, with auto-save and cloud sync.
- To DeepLRight-click any text and 'To DeepL' to translate it into your language.
- TWP — Translate Web PagesTranslate a page in real time.
- uBlock OriginThe efficient, wide-spectrum content blocker. Easy on CPU and memory.
- Web ArchivesArchived/cached versions across 10+ engines — Wayback, Archive.is, Google, Bing, Yandex.
- YesScript2Mark the active tab's domain untrusted and block its scripts — for sites eating resources or misbehaving, even if it breaks the page.
- Buster: Captcha Solver for HumansAsk Buster to solve captchas for you.
- Copy PlainTextCopy text with all formatting stripped.
- Dictionary AnywhereDouble-click any word for a pop-up definition while you browse.
- Fire Source ViewerQuickly view a page's HTML, JavaScript and CSS.
- OpenLink Structured Data SnifferReveal structured metadata embedded in HTML — POSH, Microdata, JSON-LD, RDF-Turtle, RDFa.
- Privacy BadgerAutomatically learns to block invisible trackers.
- SEOInfoSurface SEO issues as you browse — performance, redirects, structured data and errors. Export to Excel.
- Simple Tab GroupsTab grouping (heads-up: can conflict with Tab Session Manager).
- NoFollowOutline nofollow links and detect nofollow/noindex meta tags, with filtering and custom outline styles.
- GSC GuardianTrack and analyze Google core updates in real time.
- SpeedVitalsLighthouse lab data + Chrome CrUX field data for performance.
Click any name to grab it from the Chrome Web Store or Firefox Add-ons. A few (5) have no canonical store listing (or share a generic name), so they're left unlinked.
SEOs Worth Following
The people whose posts I actually stop scrolling for:
Daniel Foley Carter
Dawn Anderson
Pedro Dias
Steve Toth (SEO Notebook)
Cyrus Shepard
Mark Williams-Cook
Aleyda Solis
Lily Ray
Chris Long
Dawn Anderson
Pedro Dias
Steve Toth (SEO Notebook)
Cyrus Shepard
Mark Williams-Cook
Aleyda Solis
Lily Ray
Chris Long
And two LinkedIn feeds I keep an eye on: #seo · #techseo.
Newsletters, Blogs & Resources
- WTF is SEO?SEO for journalism.
- SEO for Google NewsNewsroom and Google News SEO.
- Search Engine Journal
- The Search Herald
- The SEO Sprint
- Kevin IndigGrowth memos.
- JC ChouinardPython & technical SEO.
- Search Engine Land
- SEO NotebookSteve Toth's newsletter.
- SEO For Lunch
- NewzDashNews SEO guides.
- Go Fish Digital — Case Studies
- Core UpdatesMark Williams-Cook's weekly tips.
- Google Search Central (YouTube)Straight from the source.
- SEO Fomo HubCurated SEO news hub.
Subreddits
Reference Dashboards & Data
- Google Ranking Updates Timeline — Research DataCommunity-maintained timeline of confirmed and suspected algorithm updates.
- Google Search Status DashboardGoogle's own incident/ranking-systems status history.
Handy Tools & Bookmarklets
- Keywords In Sheets
- DevaTalk BookmarkletsDrag the Devaka rectangle onto your bookmarks bar.
- Google Trends
- SEO GetsGSC data, supercharged.