We value your privacy

We use cookies to enhance your browsing experience, serve personalised ads or content, and analyse our traffic. By clicking "Accept All", you consent to our use of cookies.

Sign in
Sign up
Sign up

Site Audit

Run a complete SEO audit of your website

Identify, prioritize, and fix 170+ technical and on-page SEO issues. Keep your website in top shape for users and search engines.

Free for websites with verified ownership
Free for websites with verified ownership
Sign up for Free

Signing up here gives you access to Ahrefs Webmaster Tools ↗ for free

See All Plans
Watch demo
Site Audit crawls all your website’s pages. It flags all possible technical and on-page SEO issues, provides recommendations on how to fix them, visualizes key data in a chart, and delivers an overall SEO health score.
Scans for 170+ issues. Grouped by major technical SEO categories.
Slow Pages
Core Web Vitals
Heavy CSS or HTML
Titles
Meta Descriptions
H1 Tags
Content
Duplicates
Indexability
Social Tags
Localization
Links
Redirects
Images
JS
CSS
Robots
Sitemaps
Structured Data
Slow Pages
Core Web Vitals
Heavy CSS or HTML
Titles
Meta Descriptions
H1 Tags
Content
Duplicates
Indexability
Social Tags
Localization
Links
Redirects
Images
JS
CSS
Robots
Sitemaps
Structured Data
Gives clear instructions on how to fix issues.
Blazing fast. Up to 170k URLs crawled each minute.
Executes JavaScript.
Free for websites with verified ownership.
Up to
5
K
Pages/mo
Visualizes data with charts and graphs. For the indexability distribution, page load speed, duplicates, and so on.
Every major SEO category is covered. Site Audit automatically groups issues by type and provides clear instructions on how to fix them.
Slow Pages
Core Web Vitals
Heavy CSS or HTML
Titles
Meta Descriptions
H1 Tags
Content
Duplicates
Indexability
Social Tags
Localization
Links
Redirects
Images
JS
CSS
Robots
Sitemaps
Structured Data
Slow Pages
Core Web Vitals
Heavy CSS or HTML
Titles
Meta Descriptions
H1 Tags
Content
Duplicates
Indexability
Social Tags
Localization
Links
Redirects
Images
JS
CSS
Robots
Sitemaps
Structured Data

JavaScript files that cannot be loaded

Broken JS files will negatively impact user experience on your pages. Besides, they can lower your pages' authority in the eyes on the search engines.

How to fix

Review all the JavaScript files reported and make sure they are loaded properly.

Make sense of data with charts and graphs for indexability distribution, page load speed, duplicates, and more.
HTTP status code distribution chart in Ahrefs’ Site AuditHealth Score in Ahrefs’ Site AuditLinks by destination status codes in Ahrefs’ Site AuditCrawled URLs distribution pie chart in Ahrefs’ Site AuditImage subtype distribution pie chart in Ahrefs’ Site AuditCRuX performance history chart in Ahrefs’ Site AuditLink type distribution chart in Ahrefs’ Site AuditLighthouse score history chart in Ahrefs’ Site AuditDuplicate pages chart in Ahrefs’ Site AuditCrawl status of links found in Ahrefs’ Site AuditHTTP status code distribution chart in Ahrefs’ Site AuditCrawl history chart in Ahrefs’ Site Audit

Uncover critical SEO issues and hidden opportunities. Scan your website for 170+ technical and on-page SEO issues to get a comprehensive website analysis.

Site Audit segments issues into errors, warnings, and notices, so you know which ones to fix first. You can also adjust their importance for ongoing projects.
And preserve link authority. Find temporary and permanent redirects, spot redirect loops, and understand the distribution of the destination status codes.
Be it title tags, meta descriptions, headings, or low-quality content pages.
Measure the CRuX and Lighthouse performance metrics of your pages to see which ones are slowing down your website.
On auto-pilot. Save time by knowing which page to link from, which page to link to, along with the ranking keyword and its context.
Once your crawl is done, download the entire list of issues in a ZIP or CSV file to fix them or send it to your developers—fixing instructions included.

Fix issues by priority

Site Audit segments issues into errors, warnings, and notices, so you know which ones to fix first. You can also adjust their importance for ongoing projects.

Monitor redirects

And preserve link authority. Find temporary and permanent redirects, spot redirect loops, and understand the distribution of the destination status codes.

Find duplicate content

Be it title tags, meta descriptions, headings, or low-quality content pages.

Optimize pages for speed

Measure the CRuX and Lighthouse performance metrics of your pages to see which ones are slowing down your website.

Get internal linking suggestions

On auto-pilot. Save time by knowing which page to link from, which page to link to, along with the ranking keyword and its context.

Export all issues in bulk

Once your crawl is done, download the entire list of issues in a ZIP or CSV file to fix them or send it to your developers—fixing instructions included.

Looking for something more advanced? Zoom in on specific technical SEO areas related to crawlability, international SEO, markup, site architecture, and robots.txt.

Go deeper than predefined issues with Page explorer & Link explorer. Both tools put you in full control of over 250+ different data points on each of your pages.
Troubleshoot SEO issues at a glance, with all the info about a URL in one place: content fields, inlinks/outlinks, hreflang, structured data, and duplicates.
No need to configure a custom search before the crawl. You can do all kinds of searches in real-time and compare code or text changes in-between crawls.
Know how to correctly specify the language and geographical targeting of a page and diagnose mislabeled ones at a glance.
Check your content against 190+ Google and Schema.org validation requirements to increase your reach.
Increase the crawl speed, enable JavaScript rendering, customize the crawl depth, you name it. You have absolute control over your crawl.
Increase the crawl speed, enable JavaScript rendering, customize the crawl depth, you name it. You have absolute control over how you want your crawl to unfold.
Connect to Looker Studio, PageSpeed Insights API, and Google Search Console to get greater insights on your chosen data points.
Before they go live. Just add your credentials and we’ll take care of the rest. Make sure no SEO errors reach production!
Stay on top of Google’s mobile-first indexing. Choose to crawl the mobile version of your website by selecting our preconfigured mobile user agent.
Isolate issues related to a specific section of a website, like a subdomain or a subfolder. Segment it, save it, then return to it in just a few clicks.
Check if robots.txt timed out or blocked URLs. Also, verify if a URL was in the sitemap or if AhrefsSiteAuditBot couldn’t parse it.

Slice and dice through crawled data

Go deeper than predefined issues with Page explorer & Link explorer. Both tools put you in full control of over 250+ different data points on each of your pages.

Rely on the industry’s most complete URL details panel

Troubleshoot SEO issues at a glance, with all the info about a URL in one place: content fields, inlinks/outlinks, hreflang, structured data, and duplicates.

Search the raw HTML, rendered HTML, and text of a crawled page

No need to configure a custom search before the crawl. You can do all kinds of searches in real-time and compare code or text changes in-between crawls.

Visualize hreflang issues in a network graph

Know how to correctly specify the language and geographical targeting of a page and diagnose mislabeled ones at a glance.

Rank in rich results with structured data

Check your content against 190+ Google and Schema.org validation requirements to increase your reach.

Configure your crawl with granular settings

Increase the crawl speed, enable JavaScript rendering, customize the crawl depth, you name it. You have absolute control over your crawl.

Configure your crawl with granular settings

Increase the crawl speed, enable JavaScript rendering, customize the crawl depth, you name it. You have absolute control over how you want your crawl to unfold.

Integrate with Looker Studio, PSI, and GSC/GA (soon)

Connect to Looker Studio, PageSpeed Insights API, and Google Search Console to get greater insights on your chosen data points.

Crawl staging and restricted websites

Before they go live. Just add your credentials and we’ll take care of the rest. Make sure no SEO errors reach production!

Crawl mobile websites

Stay on top of Google’s mobile-first indexing. Choose to crawl the mobile version of your website by selecting our preconfigured mobile user agent.

Segment crawls

Isolate issues related to a specific section of a website, like a subdomain or a subfolder. Segment it, save it, then return to it in just a few clicks.

Review robots.txt and sitemaps

Check if robots.txt timed out or blocked URLs. Also, verify if a URL was in the sitemap or if AhrefsSiteAuditBot couldn’t parse it.

Step into the next era of website performance. Catch SEO issues early on, get website changes indexed faster, and deploy fixes automatically.

Always-on audits

Crawl your website 24/7 to catch & fix critical SEO issues - before they impact your search rankings.

Learn more →

IndexNow integration

Get your website indexed faster. Notify participating search engines instantly about page changes.

Learn more →

Patches

Publish SEO fixes to your website live - individually or in bulk. No devs needed. We handle all the backend.

Learn more →
All features are available as Project boost add-ons →
Start for free. Find and fix all the technical SEO issues holding you back.
22,741 users joined Ahrefs in the last 7 days
Free for websites with verified ownership
Free for websites with verified ownership
Sign up for Free

Site Audit is included with Ahrefs Webmaster Tools ↗ for free

See All Plans