Technical Optimization
Learn about technical optimization terms and best practices. Technical SEO ensures search engines can crawl, index, and render your website effectively.
Crawlability
The ability of search engine bots to access and crawl all the pages on your website. Poor crawlability can prevent pages from being indexed.
Robots.txt
A text file that tells search engine crawlers which pages or files they can or cannot request from your site.
Noindex Tag
A meta tag that tells search engines not to include a page in their search results. Used for pages you don't want appearing in search.
Page Speed
How fast your web pages load. Page speed is a ranking factor and crucial for user experience. Measured using metrics like LCP, FCP, and TTFB.
Core Web Vitals
A set of specific factors Google considers important for user experience: Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS).
LCP (Largest Contentful Paint)
A Core Web Vital that measures how long it takes for the largest content element on a page to load. Good LCP is 2.5 seconds or less.
CLS (Cumulative Layout Shift)
A Core Web Vital that measures visual stability—how much elements on the page move around during loading. Good CLS is 0.1 or less.
FID (First Input Delay)
A Core Web Vital that measures interactivity—the time from when a user first interacts with your page to when the browser responds. Good FID is 100ms or less.
Mobile-First Indexing
Google's practice of using the mobile version of a page for indexing and ranking. Your site must work well on mobile to rank well.
Responsive Design
A web design approach that makes pages render well on all devices and screen sizes. Essential for mobile-first indexing.
HTTPS
The secure version of HTTP that encrypts data between the user's browser and your website. HTTPS is a ranking signal and essential for user trust.
Redirect (301/302)
A way to send users and search engines to a different URL than the one they requested. 301 is permanent, 302 is temporary.
JavaScript SEO
The practice of ensuring search engines can properly crawl, render, and index JavaScript-powered websites.
Lazy Loading
A technique that delays loading of non-critical resources until they're needed. Improves initial page load time.
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