WebSite Auditor

WebSite Auditor is a desktop SEO audit tool from Link-Assistant. You install it on Windows, macOS, or Linux, point it at a URL, and it crawls the site to build a complete list of pages and resources — HTML, CSS, JavaScript, images, and video. Because it runs as a desktop application rather than a browser tab, crawls execute from your own machine.

The technical audit covers the usual ground in detail: HTTP status codes, broken links, redirects, canonical tags, mobile friendliness, encoding, and crawlability or indexing problems. A structure view maps the site's architecture and internal linking, showing which pages are linked most and least. Core Web Vitals and page speed get their own workflow — the tool pulls data through the PageSpeed Insights API and can process up to 25,000 pages per day with an API key, then lists the specific resources to fix, such as oversized images or JavaScript files that need minifying.

The on-page side is where it differs from a plain crawler. The Content Audit examines keyword usage across page elements and compares your page against the competitors currently ranking for that term. A TF-IDF tool scores topical relevance, and a Content Editor module lets you rewrite existing pages or draft new ones using recommendations drawn from the SERPs. Beyond content, the tool generates XML sitemaps, manages robots.txt files, uploads them via FTP, and submits sitemaps to major search engines. Reports come as ready-made templates — Site Audit Summary, Site Audit Details, Domain Strength — written so non-specialists can read them, and you can schedule recurring crawls with alerts for ongoing monitoring.

Best for

• Technical audits before a redesign, migration, or new site launch
• Hunting broken links, redirect chains, and indexing issues across large sites
• Optimizing individual pages against the competitors actually ranking for a keyword
• Bulk Core Web Vitals checks when you need page speed data for hundreds of URLs at once
• Agencies that need client-ready audit reports on a recurring schedule
• Generating XML sitemaps and keeping robots.txt files under control

Frequently asked questions

Is WebSite Auditor free?

The product pages advertise a free download and use "Free & Pro" wording, so a free version exists. Exact prices for the paid tier aren't listed on the pages reviewed, so check the vendor's site for current pricing.

Does it run in a browser?

No. It's a downloadable desktop application available for Windows, macOS, and Linux.

Can it audit Core Web Vitals for a whole site?

Yes. It gathers Core Web Vitals and page speed data through the PageSpeed Insights API, and with an API key it can check up to 25,000 pages per day in a single run. It also names the specific resources to optimize, like images to resize or scripts to minify.

How does the on-page analysis work?

The Content Audit looks at keyword usage across page elements and compares your page with the top-ranking competitors for your target keyword. A TF-IDF tool and the Content Editor module then produce recommendations for improving topical relevance.

Can it build sitemaps and robots.txt files?

Yes. It generates XML sitemaps, uploads them via FTP, and submits them to major search engines directly from the tool. You can also create and edit robots.txt files in the same interface.

Who is it aimed at?

The vendor positions it for webmasters, SEO agencies, and business owners — anyone who needs recurring audits rather than a one-off scan. Scheduled crawls and change alerts support that ongoing use.

Alternatives

WebSite Auditor focuses on crawling, technical auditing, and on-page optimization. If you want something broader or more content-focused, these alternatives cover adjacent ground:

• Konvart — an all-in-one SEO and AEO platform if you want audits bundled with ranking tools in one web-based product.
• RanksPro.io — built for agencies that need audits plus rank tracking and LLM visibility together.
• Site Mechanic — better if your priority is generating SEO articles from your existing content rather than auditing site structure.
• Keywordscale — for building topical keyword clusters to feed into your on-page optimization work.