Free SEO audit tools
Site auditing tools can be pricey, but plenty offers free versions or a free one-off check. Even if a free site audit tool doesn't provide everything you can get from a paid one, they're helpful to spot opportunities to improve your SEO.
251 tools
PaidAn all-in-one SEO tools that can help you with backlink analysis, keyword research, site auditing and more.All-in-one, Backlink Analysis, Competitor analysis, Keyword research, Rank tracking, Site AuditingAhrefs
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PaidUse Surfer to quickly generate content plans for any domain. Write high-quality, SEO-friendly content to imporve your organic traffic.Content writing, Content briefing, Keyword research, Site AuditingSurfer SEO
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FreeSEO audit tool with free PDF! Scan your website in seconds for common on-page SEO fixes, plus see organic keywords, links, and more.SEO checker
SEO Auditor
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FreeUnderstand how your site is performing in search, as well as identifying any issues that need fixing using Google Search Console. From monitoring, maintaining, to reporting, this tool does it all.Site Auditing, Web AnalyticsGoogle Search Console
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PaidEntity-based SEO Platform, to help you rank higher & stay ranked longer.Content briefing, Content writing, Structured Data
InLinks
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FreeImprove your SEO by using this plugin that generates sitemaps, enabling search engines to better index your site.Plugins/Extensions, XML SitemapsXML Sitemaps plugin
WordPress
PaidDareboost provides an overview of your site speed, SEO, quality and security in minutes, including tips on how to improve optimisation.Site speedDareboost
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PaidCheck all URLs in one go for status code, redirects, and HTTP response headers. This app is suitable for both Windows and Mac OS.SEO crawlerHEADMasterSEO
Mac Windows
PaidCopyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your text is original.Plagiarism checker, Site AuditingCopyscape
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FreeUse this tool to spot the URLs in your XML sitemap that are valid, highlighting the ones that are invalid so you can remove them.XML SitemapsMap Broker XML Sitemap Validator
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PaidSiteliner provides an analysis of your site within minutes, enabling you to spot errors that can be quickly be fixed.Duplicate ContentSiteliner
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FreeUse this tool to identify how your site is performing against key metrics, followed by tips on how to improve.SEO checkerWebsite Grader
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PaidThe Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links, images, CSS, script and apps.SEO crawlerScreaming Frog SEO Spider
Mac Windows
FreeUse this tool to generate an XML sitemap for your site with the click of a button.Site AuditingXML Sitemaps
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FreeUse this tool to measure your site's performance, including tips on how you can create a better user experience.Site speedweb.dev Measure
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FreeCheck your site speed with just a click of a button using Wattspeed.Site speedWattspeed
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FreeUse this tool to crawl your site to detect unused CSS selectors.Site speedUnused CSS finder
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FreeUse this tool to check how long it takes for your server to respond to requests made by the browser.Site speedTTFB Test
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FreeBrowser extensions, Site AuditingQuick Click Website Audit
Chrome
FreeUse this tool to view how your page looks with the structured data it contains.Structured DataStructured Data Testing Tool
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FreeA simple free browser extension that shows you status codes and redirects for the URL you've visited within your browser.Browser extensions, Site AuditingLink Redirect Trace
Chrome Firefox
FreeUse SERPSim to generate snippets for the SERP using the latest Google pixel limits.Meta OptimisationSERPSim
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PaidLog File AnalysisSEOLyzer
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FreeGet a better understanding of how search engines view your page by using this tool. It shows you how a browser renders a page, rather than the server.Browser extensions, Site AuditingView Rendered Source
Chrome
FreeUse this tool to generate a robots.txt file, ensuring search engine crawlers are crawling and indexing your site.Site AuditingRyte Robots.txt Generator
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FreeUse this tool to see which rich results can be generated by the structured data a page contains.Structured DataRich Results Test
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FreeUse this tool to analyse hi-res images, finding the best dimensions for embedding as responsive images in your siteSite speedResponsive Breakpoints
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PaidUse the Pingom Site Speed Tool to analyse your site speed and how to make this it faster.Site speedPingom Site Speed Tool
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FreeUse this tool to analyse the speed of your site.Site speedPageSpeed Insights
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FreeFrom page by page analysis, keyword research and a SERP preview, optimise your site using this all-in-one tool.Meta OptimisationPage Outil: GSC Optimization
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FreeOnely Made for Geeks [OMFG] is Onely’s official free toolset that allows you to access your website’s rendering cost, JavaScript injected elements, and indexed HTML and JS code.Site AuditingOnely JavaScript SEO Tools
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FreeYou can see the key differences between your desktop and mobile site with MFI Checker - Zeo's Mobile-first Indexing tool.Site AuditingMobile First Indexing Test Tool
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FreeWith Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!Meta OptimisationMeta Tags
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FreeA Schema.org structured data generator that supports the creation of JSON-LD markups. Including all of the required item properties and more.Structured DataMerkle Schema Markup Generator
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FreeAn extension that is compatible across multiple browsers that unveils structured metadata embedded within HTML documents and web pages.Browser extensions, Site Auditing, Structured DataOpenLink Structured Data Sniffer
Chrome Firefox
FreeConfigure and download your performance budget for Google LighthouseSite speedLighthouse performance budget generator
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FreeCumulative Layout Shift (CLS) Visualiser.Site speedLayout Shift GIF Generator
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FreeSite speedKeyword-driven Site Speed Comparison
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FreeIs keep alive enabled on your web server? Use our SEO tool to check the Persistent Connection status of your website. Check multiple URLs with Bulk mode.Site speedkeep-alive Validation Tool
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FreeOne of the easiest ways to add Schema's structured markup to a page is to use JSON-LD. With this tool you can quickly generate the correct JSON-LD for anyStructured DataJSON-LD Schema Generator
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FreeCheck if the site is taking advantages of the latest HTTP 2 protocol for better content deliverySite speedHTTP/2 Test
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FreeFree bulk and single URL server header response code checker and meta refresh detection script.Site AuditingHTTP Status Codes Checker
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FreeBulk check status codes easily for up to 100 URLs. Receive detailed insights on their HTTP headers, status codes and redirect chains.Site speedHTTP Status
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PaidGTmetrix is a free tool to test and monitor your page's performance. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them.Site speedGTMetrix
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FreeSite AuditingGoogle’s Mobile Friendly Testing Tool
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FreeEnter any domain, and we'll show you top competitive SEO metrics like Domain Authority, top pages, ranking keywords, and more.SEO checkerFree Domain SEO Analysis Tool
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PaidLog File AnalysisLogflare
Cloudflare
FreeOur editors help you build FAQ, How-to and Video pages that contain the structured data markup needed to gain Google Rich Snippets. Or try out our Structured Data Visualiser 🤓Site AuditingClassy Schema
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