A versatile tool for quick on-page analysis. Instantly reveals titles, meta descriptions, canonical URLs, robot tags, word count, schema markup, Open Graph data, links, sitemap, and robots.txt—all without diving into source code. Lightweight and user-friendly. TechRadarChrome Web Store
From Semrush, this extension offers rich metrics right in your browser: domain/Page Authority, keyword difficulty, backlinks, indexed pages, and SERP data. Great for competitive analysis and understanding why pages rank. gb.hostadvice.com99signals
A multi-functional toolkit for daily SEO tasks: SERP previews, broken link checking, HTTP status codes, internal linking, word count, headings, alt text, and downloadable "People Also Ask" data. gb.hostadvice.comAnswer Socrates
A powerful browser-based keyword research tool. Shows search volume, CPC, suggestions, and keyword correlations right on Google SERP. Includes a built-in content editor for optimization. TechRadar
A classic toolbar providing Moz’s SEO metrics—Domain Authority, Page Authority, link metrics—directly in your browser. Widely used for quick competitor and backlink analysis. gb.hostadvice.com99signals
Offers on-page reports, redirect tracing, HTTP header viewing, link highlighting, location-based SERP simulation, plus page/domain/keyword metrics right in the browser. Seamlessly integrates with Ahrefs workflows. Ahrefs
Ideal for diagnosing redirect issues—tracks all redirects, HTTP status codes, and chain details for troubleshooting crawlability and technical issues. Backlinko
From Neil Patel’s toolkit, provides insights into competitors’ estimated traffic, top-performing keywords, and domain authority—useful for market analysis. Answer Socrates99signals
Allows you to check Google rankings from different locations and devices—great for location-based SERP testing and tracking. BacklinkoAnswer Socrates
Displays vital SEO metrics—Domain Authority, Citation Flow, Trust Flow, Alexa rank—plus organic keyword rankings, search volumes, visits estimates, PPC metrics, and backlink data. Chrome Web Store
Goes beyond basics: audits meta tags, heading structure, backlinks, mobile usability, schema markup, and even generates PDF reports for sharing insights easily.