Your website's check-up starts here
WebDoctor is a growing kit of free diagnostic tools for site owners. No sign-up and nothing to install: give it a URL and get a clear diagnosis with fixes.
Tools
XML Sitemap Validator
Check any sitemap against the official protocol and Google's rules: by URL, file upload or pasted XML. Every error explained, with the fix.
Check your sitemap →AI Readiness Checker
Can ChatGPT, Claude and Perplexity read and cite your site? Checks llms.txt, robots.txt AI-crawler rules, structured data and metadata.
Check AI readiness →llms.txt Generator
Build a valid llms.txt for any site in seconds: we read your sitemap and page titles and produce the file, ready to upload.
Generate llms.txt →robots.txt tester
Redirect chain checker
Hreflang checker
Meta tag analyzer
Why your sitemap deserves a check-up
An XML sitemap is the list of pages you ask search engines to crawl. When it is broken, stale or bloated, crawlers waste their budget on dead URLs and can miss the pages you actually care about.
Most sitemap problems are silent. The file still loads, Google Search Console shows a vague warning at best, and rankings erode quietly. A validator makes the invisible visible: wrong namespaces, malformed dates, URLs that do not belong, oversized files and more.
WebDoctor checks your sitemap the way a crawler reads it, then explains each finding in plain language and tells you exactly what to change.
From the blog
robots.txt for AI Crawlers: Allow and Deny Recipes
Three recipes and a bot-by-bot table for controlling GPTBot, ClaudeBot, PerplexityBot and the rest from one small text file.
SitemapsXML Sitemap Errors: Every Common Failure and Its Fix
Nine failures cause almost every broken sitemap. Here is how to recognize each one from its symptom and fix it for good.
SitemapsXML Sitemap Best Practices That Actually Matter
Half of the standard sitemap advice is folklore. These are the practices search engines actually respond to, and the fields they ignore.