What are the most important Google ranking factors?

Content relevance and quality (E-E-A-T), backlinks from authoritative sites, Core Web Vitals performance, mobile-friendliness, and HTTPS security are the primary ranking factors.

How Google's Search Algorithm Works: Key Ranking Signals Explained

Q: How often does Google update its algorithm?

Google makes thousands of small changes per year. Major "Core Updates" happen 3-4 times per year and can significantly affect rankings. Algorithm updates are announced on the Google Search Status dashboard.

Google's Algorithm: An Overview

Google's search algorithm evaluates hundreds of signals to determine which pages should rank for which queries. The algorithm is updated thousands of times per year — most changes are small; major updates (Core Updates) happen 3-4 times per year and can significantly affect rankings.

PageRank: The Foundation

PageRank (named after Google co-founder Larry Page) was Google's original innovation. It evaluates the quality and quantity of links pointing to a page as a proxy for authority.

The core idea: A link from a reputable, authoritative website is a stronger signal than a link from a low-quality site. The New York Times linking to you is worth more than a random blog.

PageRank has evolved significantly but remains fundamental to how Google evaluates authority.

E-E-A-T: Experience, Expertise, Authoritativeness, Trustworthiness

Google's Quality Rater Guidelines (used to train and evaluate the algorithm) emphasise E-E-A-T:

Experience: First-hand experience with the subject. A product review from someone who actually used it.

Expertise: Demonstrable knowledge of the topic — credentials, depth of coverage, accuracy.

Authoritativeness: Recognition by others in your field — citations, mentions, links.

Trustworthiness: Accurate information, transparent about authorship, clear contact information, secure (HTTPS).

E-E-A-T is most important for YMYL (Your Money Your Life) topics — health, finance, legal, safety.

Core Web Vitals

Google's technical performance metrics:

LCP (Largest Contentful Paint): Loading. The largest content element should load within 2.5 seconds.

INP (Interaction to Next Paint): Interactivity. Pages should respond to interactions within 200ms.

CLS (Cumulative Layout Shift): Visual stability. Content should not shift unexpectedly as the page loads.

Failing Core Web Vitals does not automatically result in poor rankings, but it is a tiebreaker when content is equal.

How to Use This Knowledge

Create content with genuine expertise: Write from experience, not just aggregated information.

Build real backlinks: Earn links through quality content, original research, and genuine relationships.

Optimise for users: Fast pages, mobile-friendly, easy to navigate.

Establish E-E-A-T signals: Author bios, credentials, citations, transparency.