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SEO Spider Tool

Crawl your website like search engines do — and find the technical issues that block rankings, indexing, user experience, and conversions.
Crawl up to 500 URLs for free!
Available for:
Windows
Apple
Linux
SEO Spider Toll

What is SEO spider?

An SEO spider is a website crawler that scans your site the way search engine bots do. It follows links, checks pages and resources, and collects technical SEO data to show what may affect crawling, indexing, rankings, and user experience.

WebSite Auditor’s SEO Spider helps you audit every important part of your website — pages, links, redirects, images, JavaScript, CSS, PDFs, videos, response headers, structured data, hreflang, canonicals, robots directives, and more. Use it to find crawlability problems, fix broken resources, improve internal linking, understand your site structure, and create clear reports for your team or clients.

Run a technical SEO audit without missing hidden issues

See your website like Google, Bing, or Yandex

See your website like Google, Bing, or Yandex

Search engines do not always see your site the same way users do. WebSite Auditor lets you crawl your site using different search engine bots, follow robots.txt instructions, and check whether important pages and resources are available for crawling.

You can also execute JavaScript to render dynamic pages and discover content or links that only appear after scripts load. This is especially useful for JavaScript-heavy websites, ecommerce stores, app-like sites, and modern frameworks where important content may not be visible in raw HTML.

Find broken links, errors, and redirect chains

Broken links waste crawl budget, hurt user experience, and make technical audits harder to manage. WebSite Auditor helps you find 404 pages, server errors, broken images, and problematic external links.

You can also audit redirects in detail. Find temporary and permanent redirects, long redirect chains, loops, canonical targets, and meta refresh URLs, then export the affected URLs for developers or clients.

Find broken links, errors, and redirect chains
Improve titles, descriptions, and on-page signals

Improve titles, descriptions, and on-page signals

The crawler checks key on-page elements across your site, including titles, meta descriptions, headings, duplicate URLs, empty tags, and duplicate page elements.

Use this data to quickly find pages with missing metadata, repeated templates, low-quality page elements, or duplicated signals that make it harder for search engines to understand which page should rank.

Audit images and page resources

Images and page resources can quietly damage both SEO and UX. WebSite Auditor checks images for broken URLs and missing alt text, and helps you identify heavy resources that may slow pages down.

Because the crawler scans more than HTML, you can inspect the scripts, stylesheets, images, videos, PDFs, and external resources used on a page and quickly find what is causing technical problems.

Audit images and page resources
Analyze internal linking and click depth

Analyze internal linking and click depth

Internal links help search engines discover, prioritize, and understand your pages. WebSite Auditor shows how pages and resources are connected, which pages receive internal links, and which important URLs are buried too deep in the site structure.

Use click depth data to find pages that take too many clicks to reach from the homepage. Then improve your internal linking so important pages are easier for both users and search engines to find.

Visualize your website structure

A table of URLs is useful. A visual map is faster to understand.

WebSite Auditor’s visual sitemap helps you see your site architecture, internal linking patterns, and page relationships. Use it to spot isolated sections, overly deep page groups, weakly linked pages, and structural problems after a migration, redesign, or large content expansion.

Visualize your website structure
Improve Core Web Vitals with PageSpeed API integration

Improve Core Web Vitals with PageSpeed API integration

With a powerful Core Web Vitals module in WebSite Auditor, you can fix technical issues affecting site speed and overall site performance. Add the PageSpeed API key, run the website audit, and see how many pages fail to pass the Core Web Vitals assessment.

The website analysis report will show how many URLs have a poor Performance Score and what page speed issues need to be fixed. The bulk overview of all tech SEO issues and in-depth data from PageSpeed Insights is here for you in an easy-to-navigate workspace.

Generate XML sitemaps and robots.txt files

A crawl can reveal what is wrong. WebSite Auditor also helps you prepare the files that guide search engines through your site.

Use the tool to generate XML sitemaps, review robots.txt rules, create robots directives, and upload files via FTP when you are ready to update your site.

Generate XML sitemaps and robots.txt files
Use custom search and extraction

Use custom search and extraction

Need to find every page that contains a specific script, tag, plugin, tracking code, phrase, heading, CSS selector, or HTML element?

WebSite Auditor’s Custom Search lets you look for any piece of content across your website. SEOs, developers, and site owners can use it to check analytics tags, find outdated code, locate templates, audit CMS elements, or extract specific data from pages.

Turn crawl data into reports your team can use

Technical SEO work should not end with a spreadsheet full of URLs. WebSite Auditor helps you organize audit findings, export data, schedule recurring checks, and create reports for clients, developers, or internal teams.

Use scheduled audits to monitor technical health over time and catch new problems before they hurt rankings.

Turn crawl data into reports your team can use

Crawl advanced websites with flexible settings

Every website is different. WebSite Auditor gives you crawler controls for small sites, large ecommerce stores, JavaScript-heavy websites, password-protected sections, subdomains, and complex URL parameter setups.
You can:

Everything you need for a complete technical SEO crawl

WebSite Auditor’s SEO Spider goes beyond basic crawling — helping you find technical issues, understand site structure, improve internal linking, and turn audit data into clear reports.
Full Technical SEO Audit
Find crawlability, indexability, redirect, duplicate content, and on-page issues across your site.
JavaScript Crawling
Render dynamic pages and audit content, links, and resources that rely on JavaScript.
Site Architecture
Visualize your website structure and spot pages that are buried too deep or poorly connected.
Internal Linking
Analyze link paths, click depth, incoming links, outgoing links, and internal PageRank flow.
On-Page SEO Data
Review titles, meta descriptions, headings, canonicals, structured data, and other key SEO elements.
Hidden Resource Issues
Check images, scripts, CSS, PDFs, videos, response headers, and other resources crawlers often miss.
Large Site Audits
Crawl large websites, ecommerce stores, subdomains, and complex URL structures with flexible settings.
Reports & Scheduling
Schedule recurring crawls, export audit data, and create clear reports for clients or internal teams.

Free SEO spider download

You can download WebSite Auditor for free and crawl up to 500 resources. The free version is a good fit for testing the crawler, auditing small websites, or checking whether the workflow fits your SEO process.
For unlimited crawling, advanced features, saving projects, and professional reporting, upgrade to a WebSite Auditor license.
Available for:
Windows
Apple
Linux

FAQ

What is an SEO spider tool?

An SEO spider tool is software that crawls a website, collects technical SEO data, and reports issues that may affect search visibility. It checks pages, links, redirects, metadata, indexability signals, resources, and site structure.

How does WebSite Auditor’s SEO Spider work?

WebSite Auditor follows links across your website, scans pages and resources, checks technical SEO factors, and shows issues in the Site Audit dashboard. You can crawl as a search engine bot, execute JavaScript, audit subdomains, inspect headers, and export the results.

Can I crawl JavaScript websites?

Yes. WebSite Auditor can execute JavaScript and crawl dynamically generated content, including copy and links that appear after rendering.

Can I use WebSite Auditor to find broken links?

Yes. The crawler finds broken internal and external links, 404 pages, server errors, and broken resources such as images.

Does WebSite Auditor check redirects?

Yes. You can audit redirects, redirect chains, redirect loops, canonical URLs, and meta refresh URLs.

Can I crawl password-protected websites?

Yes. WebSite Auditor can crawl and audit password-protected websites that require authentication.

Does WebSite Auditor check images?

Yes. The SEO Spider can find broken images, missing alt text, and heavy resources that may affect page performance.

Can I generate XML sitemaps?

Yes. WebSite Auditor includes XML sitemap and robots.txt tools, so you can create, review, edit, and upload files for search engines.

Is WebSite Auditor free?

You can download WebSite Auditor for free and crawl up to 500 resources. A paid license unlocks unlimited crawling and advanced features.

What operating systems does WebSite Auditor support?

WebSite Auditor works on Windows, macOS, and Linux.