13 guides
Technical SEO
The problems that stop Google from crawling and indexing a site, and how to fix each one: canonical and noindex tags, redirects, sitemaps, hreflang, broken links and page speed.
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Why Google Says "Discovered – Currently Not Indexed" (and How to Actually Fix It)Google found your page but hasn't crawled it yet. Why it happens, and the fixes that actually move pages into the index. · 7 min readDo it in DidYouSEOSite auditFind indexing, redirect and speed problems across a whole site.See Site audit
All Technical SEO guides
- How to Test Schema Markup: 3 Free Validators and When to Use EachHow to test schema markup the right way: which free validator answers which question, the 6 errors that break rich results, and a 4-step testing workflow.Updated · 6 min read
- What Is Googlebot? How Google's Crawler Sees Your Site (and Who Else Is Crawling It Now)What is Googlebot? A plain-English guide to how Google's crawler discovers, renders, and indexes your pages — and how to control what it sees. · 5 min read
- Does Website Downtime Hurt SEO? What Actually Happens Hour by HourWebsite downtime and SEO: what Google actually does when your site returns errors, how long you have before rankings drop, and how to catch it early. · 5 min read
- The Noindex Tag Explained: When to Hide a Page From Google on PurposeThe noindex tag explained: what it does, how it differs from robots.txt disallow, and why pages sometimes get noindexed by accident. · 7 min read
- Hreflang Tags Explained: Why 75% of Sites Get Them WrongHreflang tags explained: what they do, why they must be reciprocal, and the specific mistakes that cause Google to ignore them entirely. · 6 min read
- 301 vs 302 Redirects: The One-Character Mistake That Costs You Rankings301 vs 302 redirects explained: which one passes ranking signals, which one doesn't, and how to check which type your site is actually using. · 7 min read
- XML Sitemap Best Practices (and Common Mistakes That Hide Pages from Google)XML sitemap best practices that keep every page crawlable — plus the four mistakes (noindex bloat, fake lastmod, size limits) that quietly hide pages. · 6 min read
- Favicon Not Showing in Google Search Results? Here's the FixFavicon not showing in Google search results? Usually a missing favicon.ico, a robots.txt block, or Google's normal crawl lag. Here's how to fix it. · 6 min read
- Duplicate Content: What Actually Hurts You vs What Google IgnoresDuplicate content SEO myths debunked. Google doesn't penalize most duplicates — it just picks one. Here's what actually causes real ranking damage. · 7 min read
- Core Web Vitals in 2026: What Still Matters After INP Replaced FIDCore Web Vitals 2026: what actually still counts as a ranking signal, why INP is the hardest metric to pass, and what to fix first. · 6 min read
- Canonical Tags Explained: When to Use Them and When They BackfireCanonical tags fix duplicate content when used right — and quietly deindex pages when used wrong. Here's the correct setup and the mistakes to avoid. · 6 min read
- Broken Links Are Quietly Costing You Rankings — Here's How to Find and Fix ThemBroken links waste crawl budget, leak link equity, and hurt user experience. What they actually cost you, and how to find and fix them. · 5 min read