Free SEO audit tools

Site auditing tools can be pricey, but plenty offer 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 useful for quick one-off checks to spot opportunities to improve your SEO.


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Free
thruuu Screenshot
Content briefing, Site speed
Web-based
With to thruuu, you will get comprehensive insights about your competition content and details about the Search Engine Result Page (SERP) of Google.
Freemium
InLinks Screenshot
Content briefing, Content writing, Structured Data
Entity-based SEO Platform, to help you rank higher & stay ranked longer.​
Freemium
Dareboost Screenshot
Site speed
Web-based
All-in-one service for website speed test, web performance monitoring and website analysis (speed, SEO, quality, security). Web performance has never been so easy.
Free
XML Sitemaps plugin Screenshot
Plugins/Extensions, XML Sitemaps
WordPress
This plugin will improve SEO by helping search enginess better index your site using sitemaps.
Freemium
HEADMasterSEO Screenshot
SEO crawler
Mac
Windows
Bulk check URL lists for status code, redirects (301, 302, chains, loops), HTTP response headers. Download for Windows & Mac OS.
Free
Map Broker XML Sitemap Validator Screenshot
XML Sitemaps
Web-based
Find out which URLs in your XML sitemap are valid with Map Broker v0.1 by Michael King(iPullRank).
Freemium
Siteliner Screenshot
Duplicate Content
Web-based
Free and fast analysis of your entire website - duplicate content, broken links, internal page rank, redirections and more. Also creates an XML sitemap.
Free
Website Grader Screenshot
SEO checker
Web-based
Website Grader is a free online tool that grades your site against key metrics like performance, mobile readiness, SEO, and security.
Free
XML Sitemaps Screenshot
Site Auditing
Web-based
Free Online Google Sitemap Generator. XML-sitemaps.com provides free online sitemap generator service, creating an XML sitemap that can be submitted to Google, Bing and other search engines to help them crawl your website better. It will also generate an HTML site map to allow your website visitors to navigate easier.
Free
web.dev Measure Screenshot
Site speed
Web-based
See how well your website performs. Then, get tips to improve your user experience.
Free
Wattspeed Screenshot
Site speed
Web-based
Free
View Rendered Source Screenshot
Browser extensions, Site Auditing
Chrome
Free
Unused CSS finder Screenshot
Site speed
Web-based
This tool recursively crawls your website and finds unused CSS selectors
Free
TTFB Test Screenshot
Site speed
Web-based
Check how much time it takes to load the first byte of a given web page from multiple locations
Freemium
Surfer SEO Screenshot
Content briefing, Content writing, Keyword research, Site Auditing
Web-based
Use Surfer to generate content plans for any domain in a couple of clicks. Write high-quality and SEO-friendly content to win high positions in Google. Sign up now!
Free
Structured Data Testing Tool Screenshot
Structured Data
Web-based
Test your publicly accessible page to see and validate the structured data it contains
Free
SmallSEOTools Screenshot
Link auditing, Meta Optimisation, Plagiarism checker, Site Auditing
Web-based
You need effective SEO tools which are 100% free? Check out our Search Engine Optimization tools for checking backlinks, tracking keyword positions and more.
Free
SERPSim Screenshot
Meta Optimisation
Web-based
Tired of inaccurate and outdated SERP snippet generators? SERPsim is based on the very latest google pixel limits and is a full-fledged SERP simulator. Try it!
Freemium
SEOLyzer Screenshot
Log File Analysis
Web-based
Freemium
Screaming Frog SEO Spider Screenshot
SEO crawler
Mac
Windows
The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links, images, CSS, script and apps from an SEO perspective.
Free
Ryte Robots.txt Generator Screenshot
Site Auditing
Web-based
Generate a robots.txt file for free with this easy-to-use tool. Make sure search engine crawlers are crawling and indexing your site.
Free
Rich Results Test Screenshot
Structured Data
Web-based
Test your publicly accessible page to see which rich results can be generated by the structured data it contains.
Free
Responsive Breakpoints Screenshot
Site speed
Web-based
Efficiently analyze each hi-res image and find the best dimensions for embedding as responsive images in your site
Freemium
Pingom Site Speed Tool Screenshot
Site speed
Web-based
Use this free Website Speed Test to analyze the load speed of your websites, and learn how to make them faster.
Free
PageSpeed Insights Screenshot
Site speed
Web-based
Free
Page Outil: GSC Optimization Screenshot
Meta Optimisation
Web-based
Looking to get the most out of your Google Search Console optimization? Try out Page Outil today to take full advantage of your GSC data.
Free
Onely JavaScript SEO Tools Screenshot
Site Auditing
Web-based
Onely 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.
Free
OpenLink Structured Data Sniffer Screenshot
Browser extensions, Site Auditing, Structured Data
Chrome
Firefox
Free
Mobile First Indexing Test Tool Screenshot
Site Auditing
Web-based
You can see the key differences between your desktop and mobile site with MFI Checker - Zeo's Mobile-first Indexing tool.
Free
Meta Tags Screenshot
Meta Optimisation
Web-based
With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!
Free
Merkle Schema Markup Generator Screenshot
Structured Data
Web-based
A Schema.org structured data generator that supports the creation of JSON-LD markups. Including all of the required item properties and more.
Free
Link Redirect Trace Screenshot
Browser extensions, Site Auditing
Chrome
Firefox
Free
Lighthouse performance budget generator Screenshot
Configure and download your performance budget for Google Lighthouse
Free
Layout Shift GIF Generator Screenshot
Site speed
Web-based
Cumulative Layout Shift (CLS) Visualiser.
Free
keep-alive-validation-screenshot
Site speed
Web-based
Is 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.
Free
JSON-LD Schema Generator Screenshot
Structured Data
Web-based
One 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 any
Free
HTTP/2 Test Screenshot
Site speed
Web-based
Check if the site is taking advantages of the latest HTTP 2 protocol for better content delivery
Free
HTTP Status Codes Checker Screenshot
Site Auditing
Web-based
Free bulk and single URL server header response code checker and meta refresh detection script.
Free
HTTP Status Screenshot
Site speed
Web-based
Easily check status codes, response headers, and redirect chains.
Freemium
GTMetrix Screenshot
Site speed
Web-based
GTmetrix 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.
Free
Google Search Console Screenshot
Site Auditing, Web Analytics
Web-based
Search Console tools and reports help you measure your site's Search traffic and performance, fix issues and make your site shine in Google Search results
Free
Free Domain SEO Analysis Tool Screenshot
SEO checker
Web-based
Enter any domain, and we'll show you top competitive SEO metrics like Domain Authority, top pages, ranking keywords, and more.
Freemium
Copyscape Screenshot
Plagiarism checker, Site Auditing
Web-based
Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your text is original.
Free
Classy Schema Screenshot
Site Auditing
Web-based
Our 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 🤓
Free
Bing Webmaster Tools Screenshot
Site Auditing, Web Analytics
Web-based
Sign in or signup for Bing Webmaster Tools and improve your site’s performance in search. Get access to free reports, tools and resources.
Free
AMP Validator Screenshot
Browser extensions, Site Auditing
Chrome
Free
Aleyda's Hreflang Tag Generator Screenshot
International SEO, Site Auditing
Web-based
Generate easily the hreflang annotations following Google's specifications for your pages by using the hreflang tags generator tool.
Freemium
Ahrefs Webmaster Tools Screenshot
Backlink Analysis, SEO crawler
Web-based
Analyze your own website and find out why you’re not getting more leads from it. Get detailed reports on all your SEO issues and start fixing them right away.
Freemium
Ahrefs Screenshot
All-in-one, Backlink Analysis, Competitor analysis, Keyword research, Rank tracking, Site Auditing
Web-based
You don't have to be an SEO pro to rank higher and get more traffic. Join Ahrefs – we're a powerful but easy to learn SEO toolset with a passionate community.
Freemium
Logflare Screenshot
Log File Analysis
Free
The Tech SEO - Quick Click Website Audit Screenshot
Browser extensions, Site Auditing
Chrome
Freemium
Screaming Frog Log Analysis Screenshot
Log File Analysis
Mac
Windows
Free
Free Backlink Checker Screenshot
Browser extensions, Site Auditing
Chrome
Firefox

Results Count

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  • All-in-one (12)
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  • Local SEO (1)

Platforms

Platforms
  • Web (65)
  • Chrome (6)
  • Mac (5)
  • Windows (5)
  • Firefox (3)

Pricing/Usage

Pricing/Usage
  • Free (41)
  • Subscription (37)
  • Agencies (21)
  • Free Trial (17)
  • Freemium (14)

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