SEO Audit & Broken Link Checker: Technical SEO

This technical SEO audit tool crawls your website and checks every page for SEO problems. It works as a site audit crawler, a broken link checker and a redirect checker in one run. You get one row per page with its status code, redirects, title, meta description, headings, canonical tag, robots directives, hreflang, broken links and images without alt text. Each row lists clear issue codes and an SEO score from 0 to 100. It also checks robots.txt and your XML sitemap. A site summary gives the site SEO score, counts every issue and lists duplicate titles, broken links and sitemap gaps.

It is built for site owners, SEO consultants and agencies who audit their own or their clients' sites.

SEO audit checks

Area	What you get
Status and speed	HTTP status, response time, content type
Redirects	Every hop with its status, the final URL, redirect chains and loops
Titles and descriptions	Text and length, missing, too long, too short, duplicates
Headings	H1 count and text
Indexing	Canonical URL and whether it points to the page itself, meta robots, X-Robots-Tag, noindex, nofollow
International	hreflang tags
Content	Word count of visible text
Links	Internal and external link counts. Every link is checked once per run. Links with status 400 or higher, or that fail to load, are reported as broken, with their link text
Images	Image count and images with no alt attribute
Structured data	Schema.org types from JSON-LD and microdata
Mobile and sharing	Viewport tag, page language, Open Graph title, description and image, Twitter card type
robots.txt	Whether it exists and which sitemaps it declares
XML sitemap	Pages missing from the sitemap, sitemap URLs that redirect, fail or are noindex, and sitemap URLs no page links to
SEO score	A score from 0 to 100 for each page and an average for the site

SEO audit issue codes

Code	Meaning
MISSING_TITLE	No title tag, or an empty one
TITLE_TOO_LONG	Title longer than 60 characters
TITLE_TOO_SHORT	Title shorter than 30 characters
DUPLICATE_TITLE	An earlier page in the crawl has the same title
MISSING_META_DESCRIPTION	No meta description, or an empty one
META_DESCRIPTION_TOO_LONG	Meta description longer than 160 characters
META_DESCRIPTION_TOO_SHORT	Meta description shorter than 70 characters
DUPLICATE_META_DESCRIPTION	An earlier page in the crawl has the same meta description
MISSING_H1	No H1 heading
MULTIPLE_H1	More than one H1 heading
MISSING_CANONICAL	No canonical link tag
CANONICAL_TO_OTHER	The canonical tag points to a different URL
NOINDEX	Meta robots or X-Robots-Tag contains noindex or none
NOFOLLOW	Meta robots or X-Robots-Tag contains nofollow or none
LOW_WORD_COUNT	Fewer than 200 words of visible text
BROKEN_LINK	At least one link on the page is broken
IMAGES_WITHOUT_ALT	At least one image has no alt attribute
MISSING_VIEWPORT	No meta viewport tag, so mobile browsers show a zoomed-out desktop page. No score effect
MISSING_HTML_LANG	The html tag has no lang attribute. No score effect
MISSING_OG_TAGS	No og:title and no og:image, so shared links show no preview. No score effect
REDIRECT	The URL redirects once
REDIRECT_CHAIN	The URL redirects more than once before the final page
REDIRECT_LOOP	The redirects lead back to a URL already in the chain
CLIENT_ERROR_4XX	The page, or its redirect target, returns a 4xx status
SERVER_ERROR_5XX	The page, or its redirect target, returns a 5xx status
SLOW_RESPONSE	Response headers took longer than 2 seconds
FETCH_FAILED	The page could not be loaded at all
NOT_IN_SITEMAP	An indexable page that the XML sitemap does not list
SITEMAP_URL_NOT_INDEXABLE	The sitemap lists this URL, but it redirects, fails, is noindex or has a canonical to another URL

The two sitemap codes appear only when the site has a readable XML sitemap.

On-page checks such as title and H1 run only on HTML pages that load with a 2xx status.

Duplicates. Each page is saved and charged as soon as it is audited. So a duplicate is flagged on the second and later pages that share a title or description. The OUTPUT summary lists every duplicate group with all of its pages, including the first one.

SEO score: how it is calculated

Each page starts at 100. Each issue code takes off points:

Points	Issue codes
30	NOINDEX
15	MISSING_TITLE
10	BROKEN_LINK, SLOW_RESPONSE
8	MISSING_H1, MISSING_META_DESCRIPTION, DUPLICATE_TITLE
6	LOW_WORD_COUNT
5	CANONICAL_TO_OTHER, MISSING_CANONICAL, DUPLICATE_META_DESCRIPTION, IMAGES_WITHOUT_ALT, NOFOLLOW, SITEMAP_URL_NOT_INDEXABLE
3	TITLE_TOO_LONG, TITLE_TOO_SHORT, META_DESCRIPTION_TOO_LONG, META_DESCRIPTION_TOO_SHORT, MULTIPLE_H1, NOT_IN_SITEMAP

The score never goes below 0. Pages with a 4xx or 5xx status, a redirect loop or a failed load score 0. Redirect rows get no score, because the target page is scored as its own row. The site SEO score is the average of all scored pages. The score is a simple guide to where to start. Search engines use their own signals.

robots.txt and XML sitemap check

Before the crawl, the Actor reads robots.txt for each start URL. It then reads every XML sitemap that robots.txt declares, including sitemap index files. If robots.txt declares none, it tries /sitemap.xml. It reads up to 50 sitemap files and 50,000 URLs, for at most 60 seconds. If one of these limits stops the read, sitemapReadComplete is false and NOT_IN_SITEMAP is not reported, because the page may be listed in a sitemap the run did not read.

The audit summary then shows:

• pagesNotInSitemap: indexable pages the crawl found that the sitemap does not list.
• sitemapUrlsNotIndexable: sitemap URLs that redirect, return an error, are noindex or have a canonical to another URL.
• sitemapUrlsNotLinked: sitemap URLs that no crawled page links to. These are often orphan pages. This list needs a full crawl, so it is filled only when the crawl ends before Maximum pages. Set Maximum pages to 0 to get it.
• siteIssues: ROBOTS_TXT_MISSING, SITEMAP_MISSING, SITEMAP_NOT_IN_ROBOTS_TXT and SITEMAP_URLS_NOT_LINKED.

Example from a test on a small site with five sitemap URLs: one linked page was missing from the sitemap, one sitemap URL was noindex, one redirected, and one page was in the sitemap but no page linked to it. All four showed up in the summary.

SEO audit data you get

One dataset row per page. The example section below shows a full record.

A redirecting URL gets its own row. Example from a test on crawler-test.com: /redirects/redirect_3_302 returned 302, then 301, then 301, then 200 at /redirects/redirect_target. Its row has redirectCount: 3, all four hops in redirectChain, and the issue REDIRECT_CHAIN. The target page is then audited as its own row.

Fields that can be empty:

• title, metaDescription, canonicalUrl, metaRobots and xRobotsTag are empty when the page does not have them.
• htmlLang, ogTitle, ogDescription, ogImage and twitterCard are empty when the page does not have them. hasViewport is false then.
• Each entry in brokenLinks has url, status, error, anchorText (the link text, or an image's alt text) and linkType. So you can find the link on the page.
• canonicalIsSelf is empty when there is no canonical tag.
• inSitemap is empty when the site has no readable XML sitemap, or the sitemap check is off.
• seoScore is empty for redirect rows.
• finalStatus is empty for a redirect loop, or when robots.txt blocks the redirect target.
• httpStatus is empty when the page failed to load. error then says why.
• On-page fields stay empty or zero for redirects and error pages.

Audit summary

The key-value store record OUTPUT holds the site summary:

• pagesAudited and pagesWithIssues
• siteScore: the site SEO score from 0 to 100
• scoreDistribution: pages scoring 90 to 100, 50 to 89 and 0 to 49
• lowestScoringPages: the 10 pages with the lowest score
• siteIssues, robotsTxt and sitemap: the robots.txt and XML sitemap results described above
• issueCounts: pages per issue code, highest first
• statusCounts: pages per HTTP status
• duplicateTitles and duplicateMetaDescriptions: each group with its pages
• brokenLinks: each broken URL with its status, its link text and up to 10 pages that link to it
• thresholds: the limits used for the length and word-count checks
• scoreWeights: the points each issue code takes off the score

Site audit: how to use it

1. Enter one or more start URLs of a site you own or may audit.
2. Set Maximum pages. Use 0 to audit the whole site.
3. Run the Actor. Open the Audited pages table, then the Audit summary.
4. Export the rows to CSV or Excel, or connect them to Google Sheets through Apify integrations.

Site audit input options

Option	Default	Meaning
Start URLs	https://books.toscrape.com/	Where the crawl starts
Maximum pages	100	Stop after this many pages. Set 0 for no limit
Include subdomains	Off	Also crawl subdomains such as blog.example.com. www. always counts as the same site
Follow links to other pages	On	Turn off to audit only the start URLs, for example a list of landing pages
Skip URLs matching	None	URL patterns that are never crawled or charged, for example **/tag/**
Check links for errors	On	Check each link found on each page
Check links to other sites	On	Also check links to other websites
Check robots.txt and XML sitemap	On	Read robots.txt and the XML sitemaps, and compare them with the crawl
Parallel requests	5	Pages loaded at the same time, from 1 to 20
Proxy	Off	Most sites need none

Site audit crawler: how it crawls

• It reads robots.txt on every host and skips URLs that robots.txt disallows. Skipped pages are not saved and cost nothing.
• It follows links on the same site only. Links to images, PDFs and other files are checked but not crawled.
• It reads the XML sitemaps while the crawl starts, three files at a time, for at most 30 seconds. A slow sitemap no longer delays the first pages.
• It loads HTML with plain HTTP requests. It does not run JavaScript. Content that only appears after JavaScript runs is not seen.
• Some sites block automated checks, for example with status 403 or 429. Such links show up as broken with that status.

SEO audit pricing

The Actor uses pay-per-event pricing.

Event	Free plan	GOLD plan and higher
Run start	$0.01	$0.01
Page audit	$0.006 ($6.00 per 1,000)	$0.0048 ($4.80 per 1,000)

Pages in one run	Free plan	GOLD plan and higher
100	$0.61	$0.49
1,000	$6.01	$4.81

Costs include the run start fee.

Pages skipped by robots.txt cost nothing. Link checks are included in the page price.

SEO audit example: input and output

This input audits up to 100 pages of a public test shop and checks every link:

{
  "startUrls": [{ "url": "https://books.toscrape.com/" }],
  "maxItems": 100,
  "checkLinks": true,
  "checkExternalLinks": true,
  "checkSitemap": true
}

The home page record from that run on 21 October 2026:

{
  "id": "https://books.toscrape.com/",
  "url": "https://books.toscrape.com/",
  "httpStatus": 200,
  "finalUrl": "https://books.toscrape.com/",
  "finalStatus": 200,
  "redirectChain": [],
  "redirectCount": 0,
  "responseTimeMs": 174,
  "contentType": "text/html",
  "depth": 0,
  "title": "All products | Books to Scrape - Sandbox",
  "titleLength": 40,
  "metaDescription": null,
  "metaDescriptionLength": 0,
  "h1Count": 1,
  "h1": [
    "All products"
  ],
  "canonicalUrl": null,
  "canonicalIsSelf": null,
  "metaRobots": "NOARCHIVE,NOCACHE",
  "xRobotsTag": null,
  "noindex": false,
  "nofollow": false,
  "hreflang": [],
  "wordCount": 297,
  "internalLinkCount": 73,
  "externalLinkCount": 0,
  "brokenLinkCount": 0,
  "brokenLinks": [],
  "imageCount": 20,
  "imagesWithoutAlt": 0,
  "structuredDataTypes": [],
  "htmlLang": "en-us",
  "hasViewport": true,
  "ogTitle": null,
  "ogDescription": null,
  "ogImage": null,
  "twitterCard": null,
  "inSitemap": null,
  "seoScore": 87,
  "issues": [
    "MISSING_META_DESCRIPTION",
    "MISSING_CANONICAL",
    "MISSING_OG_TAGS"
  ],
  "issueCount": 3,
  "error": null,
  "scrapedAt": "2026-10-23T22:51:10.000Z"
}

The same run gave a site SEO score of 87 over 100 pages. This test site has no robots.txt and no sitemap, so inSitemap is empty. It has no Open Graph tags, so MISSING_OG_TAGS appears (this issue costs no points). The summary lists ROBOTS_TXT_MISSING and SITEMAP_MISSING.

SEO audit FAQ

Does it give an SEO score?

Yes. Each page gets seoScore from 0 to 100, and the summary gives siteScore for the whole site. The table above shows how many points each issue costs.

Does it check my XML sitemap?

Yes. It finds the sitemap through robots.txt or /sitemap.xml. It flags pages missing from the sitemap, sitemap URLs that are not indexable, and sitemap URLs that no page links to.

How do I find broken links on my site?

Leave Check links for errors on. Each row lists the broken links on that page in brokenLinks. The OUTPUT summary lists each broken URL with the pages that link to it.

Does it check redirect chains?

Yes. Each redirecting URL gets its own row with every hop, its status codes and the final URL. Chains and loops get the issue codes REDIRECT_CHAIN and REDIRECT_LOOP.

Can it audit a whole website?

Yes. Set Maximum pages to 0. The crawl then follows every internal link that robots.txt allows.

Does it render JavaScript?

No. It reads the HTML the server sends. Pages that build their content with JavaScript may show a low word count or missing tags.

Can I export the site audit to Excel or Google Sheets?

Yes. Export the dataset as CSV, Excel or JSON, or send it to Google Sheets through Apify integrations.

SEO audit data use

• Audit only sites you own or have permission to audit.
• The Actor reads page structure: titles, tags, links and status codes. It does not collect contact details or other personal data.

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Support

Report a problem in the Issues tab. Include the run link.