Technical SEO

Short rooms that train one skill at a time: read a quick lesson, then answer questions to earn CTF points. Log in or join free to play.

• Easy25 min · 12 questions HTTP Status Codes for SEO Read the server's answer before you read the page: 200, 301, 302, 404, 410, 503 and friends. Members only
• Easy30 min · 10 questions Robots.txt & Meta Robots Crawling vs indexing: control what bots fetch and what search engines show. Members only
• Medium30 min · 8 questions Canonicalization One piece of content, many URLs: tell search engines which one you prefer. Members only
• Easy25 min · 9 questions XML Sitemaps and IndexNow Tell search engines which URLs matter and when they change. Members only
• Easy25 min · 8 questions URL Structure and Site Architecture Design URLs and internal links that crawlers and people can follow. Members only
• Medium30 min · 7 questions Mobile-First Indexing Make sure the mobile version of your site carries everything Google needs. Members only
• Medium35 min · 7 questions Pagination for Blogs and Archives Split long archives into pages that Google can crawl to the very last post. Members only
• Hard45 min · 7 questions Crawl Budget and Log File Analysis Read what Googlebot really does on your server and stop crawl waste. Members only

Full scenarios: you get a brief and your own practice website, optimise whole pages and watch them rank in a practice search results page. A lab passes only when your fix is really in place. Log in or join free to start one.

• Beginner20 min · 10 coins The menu pages are missing from search A bakery's menu pages never show up in search. Find every reason and fix it without exposing the checkout. Members only
• Intermediate20 min · 15 coins Archive pages that will not leave search A blog's archive pages and search results are still in Google months after someone added noindex. Get the noindex working and keep the articles in search. Members only
• Advanced30 min · 20 coins Crawl rules Googlebot never follows An online store's robots.txt looks strict, yet Googlebot crawls every sorted and session address while a popular guide gets blocked. Members only
• Intermediate20 min · 15 coins Service pages hidden by their own canonical tags After a theme update a cleaning company's service pages vanished from search. Find every canonical that sends Google somewhere else. Members only
• Advanced30 min · 20 coins A new site where only the homepage gets indexed A design studio's new site works fine in a browser, but crawlers find nothing beyond the homepage. Make the site crawlable without running scripts. Members only
• Intermediate20 min · 15 coins A sitemap nobody has checked in a year A tour company's two new tours are not being found, and its plugin-made sitemap is full of addresses that do not belong there. Members only
• Intermediate20 min · 15 coins The site is back, but search has not noticed An online grocer came back from a maintenance weekend, yet its pages keep dropping out of Google. Find what the maintenance plugin left behind, including the parts you cannot see in the page. Members only
• Advanced50 min · 35 coins Capstone: the school site that hides its admissions pages A full technical audit of a school website before admissions open: crawling, indexing, canonicals, redirects, the sitemap and duplicate titles, all on one site. Members only