9 Free Chrome Extensions for SEO and Keyword Research

You don’t need expensive tools to get actionable SEO data. These free Chrome extensions can help you optimize content, discover keywords, analyze competitors, and resolve technical issues—all from your browser. Whether you’re running a simple blog or managing a full-scale hosting business, these tools can streamline your SEO workflow and boost your site’s visibility without breaking the bank.

Keywords Everywhere

Best for: Quick keyword data on the go

This extension shows search volume, CPC, and competition directly in Google search results, YouTube, Amazon, and more.

  • Free version displays keyword suggestions and related terms

  • Works across Google, Bing, YouTube, and other platforms

  • Premium features (like volume) available but not required for keyword discovery

➡️ Great for bloggers and affiliate marketers doing fast keyword checks.

SEO Minion

Best for: On-page SEO audits and SERP previews

SEO Minion helps you analyze on-page SEO, check broken links, and preview your site in SERPs (great for optimizing meta titles).

  • Analyze meta tags, headings, alt text, and links

  • Google SERP location simulator

  • Multi-language Hreflang checker

➡️ A must-have for content creators and webmasters.

Ubersuggest by Neil Patel

Best for: Keyword insights and competitor metrics

This extension overlays keyword data on Google, including domain authority, backlinks, and traffic estimates.

  • Keyword suggestions and difficulty score

  • Site audit tools with visual overlays

  • Free account gives limited daily searches

➡️ Ideal for beginners who want light keyword research without leaving Google.

MozBar

Best for: Domain Authority and backlink analysis

MozBar is the classic tool for checking Page Authority (PA) and Domain Authority (DA) in the SERPs.

  • Highlights nofollow/dofollow links on any page

  • One-click access to Moz’s link metrics

  • Premium features are locked, but free version is still useful

➡️ Popular among SEOs doing quick backlink or domain checks.

Ahrefs SEO Toolbar

Best for: In-depth SEO metrics & link data

Even without a paid Ahrefs account, you can use the free toolbar to see important on-page elements like:

  • Title tags, meta descriptions, headings

  • HTTP status, robots.txt, canonical URLs

  • Redirect chains and nofollow tags

➡️ One of the most powerful free toolbars for technical SEO.

Detailed SEO Extension

Best for: Fast technical audits for SEOs

Created by the team behind the Detailed blog, this clean extension gives you instant access to SEO-critical info.

  • Shows titles, meta, schema, headings, links

  • Fast loading and no account required

  • Helpful for agency audits or quick competitor research

➡️ Built by SEOs, for SEOs—perfect for daily use.

SEOquake by Semrush

Best for: SERP and page-level analysis

SEOquake adds rich overlays to search results and detailed reports for any webpage.

  • View Alexa rank, backlinks, and keyword density

  • Export full audits to CSV

  • SERP comparison tool for multiple domains

➡️ A powerful multi-purpose SEO toolkit in one click.

TextOptimizer

Best for: Semantic keyword suggestions

TextOptimizer helps improve content relevance by suggesting LSI (Latent Semantic Indexing) keywords based on Google’s intent.

  • Analyze content quality vs search intent

  • Ideal for content optimization and rewriting

  • Suggests terms for better topic coverage

➡️ Great for bloggers and copywriters optimizing existing posts.

Link Redirect Trace

Best for: Detecting redirect chains and canonical issues

If you’re serious about technical SEO, this tool shows complete redirect paths and potential indexation issues.

  • Reveals 301, 302, 307, meta refresh, and JS redirects

  • Shows canonical and hreflang conflicts

  • Good for diagnosing affiliate cloaks, expired URLs, or migrations

➡️ A must for site audits and diagnosing SEO problems.

Bonus Tips: How to Use These Extensions Together

  • Start with MozBar or SEOquake to analyze SERPs quickly

  • Use Ahrefs SEO Toolbar or SEO Minion for deeper page audits

  • Combine Keywords Everywhere + TextOptimizer to build keyword-rich content

  • Run Link Redirect Trace before publishing or updating important pages

You don’t need expensive tools to get actionable SEO data. These free Chrome extensions can help you optimize content, discover keywords, analyze competitors, and resolve technical issues—all from your browser.

If you’re just starting out, try combining Keywords Everywhere, SEO Minion, and Detailed SEO Extension. For advanced users, layer in Ahrefs Toolbar and Redirect Trace to go deeper.