SEO Knowledge Base
In-depth guides on every ranking factor our scanner checks. Learn what matters, why it matters, and exactly how to fix it. All citations link directly to Google's official documentation.
Title tags, meta descriptions, and Open Graph markup
What is a Meta Description & Why It Matters for SEO
A meta description is the 150-160 character snippet that appears below your page title in search results. While not a direct ranking factor, it dramatically impacts click-through rates, which indirectly affects rankings.
Title Tags: The Most Important On-Page SEO Element
The title tag is the single most important on-page SEO element. It appears as the clickable headline in search results and in the browser tab. Google uses it to understand page relevance.
Screen readers, ARIA, and WCAG compliance
HTTPS, security headers, and safe browsing
Page speed, Core Web Vitals, and server response
Sitemaps, robots.txt, crawlability, and indexing
XML Sitemaps: How to Create & Submit Yours
An XML sitemap is a file that lists all important pages on your website. It helps search engines discover and index your content more efficiently, especially for large or new sites.
robots.txt Guide: Control How Google Crawls Your Site
The robots.txt file tells search engine crawlers which pages they can and cannot access. A missing or misconfigured robots.txt can either block Google from your content or waste crawl budget.
Schema.org markup and rich results
Content quality, headings, and E-E-A-T signals
Open Graph, Twitter Cards, and social sharing
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