[301 Redirect](atomicglue.co/glossary/301-redirect) — A 301 redirect is a permanent redirect that passes nearly all link equity from the old URL to the new URL, signaling to search engines that content has moved permanently.
[302 Redirect](atomicglue.co/glossary/302-redirect) — A 302 redirect is a temporary redirect that tells search engines the move is not permanent, preserving the original URL as the canonical destination.
[404 Error](atomicglue.co/glossary/404-error) — A 404 error is an HTTP status code indicating that a requested page does not exist on the server, typically due to a broken link, deleted page, or mistyped URL.
[Algorithm](atomicglue.co/glossary/algorithm) — A search algorithm is a complex set of rules and calculations a search engine uses to rank web pages in response to a user query.
[Algorithm Update](atomicglue.co/glossary/algorithm-update) — An algorithm update is a significant change to how a search engine ranks content, often causing measurable shifts in search results and site traffic.
[Alt Text](atomicglue.co/glossary/alt-text-seo) — Alt text (alternative text) is an HTML attribute added to image tags that describes the image content for accessibility and search engine understanding.
[Anchor Text](atomicglue.co/glossary/anchor-text) — Anchor text is the visible, clickable text in a hyperlink. Search engines use it as a signal of what the linked page is about.
[Backlink](atomicglue.co/glossary/backlink) — A backlink is a link from one website to another. Search engines treat backlinks as votes of confidence, making them one of the strongest ranking signals.
[Black Hat vs White Hat SEO](atomicglue.co/glossary/black-hat-vs-white-hat-seo) — White hat SEO follows search engine guidelines to improve rankings through legitimate means. Black hat SEO uses aggressive, manipulative tactics that violate guidelines and risk penalties.
[Canonical Tag](atomicglue.co/glossary/canonical-tag) — A canonical tag (`rel=canonical`) is an HTML element that tells search engines which version of a URL is the preferred or master version when duplicate or similar pages exist.
[Crawl Budget](atomicglue.co/glossary/crawl-budget) — Crawl budget is the number of URLs Googlebot can and wants to crawl on your site within a given time frame, determined by crawl demand and crawl rate limits.
[Crawling](atomicglue.co/glossary/crawling) — Crawling is the process by which search engine bots discover and download web pages by following links across the internet.
[Dofollow vs Nofollow](atomicglue.co/glossary/dofollow-vs-nofollow) — Dofollow links pass link equity and influence search rankings. Nofollow links do not pass equity and are used for untrusted or paid content, though they may still drive traffic.
[Duplicate Content](atomicglue.co/glossary/duplicate-content) — Duplicate content is content that appears on multiple URLs, either within the same site or across different domains, which can confuse search engines and dilute ranking signals.
[E-E-A-T](atomicglue.co/glossary/eeat) — E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness: the four pillars Google's quality raters use to evaluate content quality, especially on YMYL topics.
[External Linking](atomicglue.co/glossary/external-linking) — External linking is the practice of linking from your website to a page on a different domain. It signals credibility to users and helps search engines understand your content's context.
[Featured Snippet](atomicglue.co/glossary/featured-snippet) — A featured snippet is a concise answer displayed at the top of Google Search results, extracted from a web page and shown in a box above organic listings.
[Google Search Console](atomicglue.co/glossary/google-search-console) — Google Search Console (GSC) is a free tool from Google that helps website owners monitor, maintain, and troubleshoot their site's presence in Google Search results.
[Googlebot](atomicglue.co/glossary/googlebot) — Googlebot is Google's web crawling bot that discovers and fetches pages across the internet for indexing and ranking.
[Helpful Content System](atomicglue.co/glossary/helpful-content-system) — Google's Helpful Content System is a ranking mechanism that rewards people-first content and demotes content written primarily for search engine rankings.
[Hreflang](atomicglue.co/glossary/hreflang) — Hreflang is an HTML attribute that tells search engines which language and regional version of a page to serve to users based on their language and location.
[Indexing](atomicglue.co/glossary/indexing) — Indexing is the process of storing, parsing, and organizing crawled web pages in a search engine's database so they can be retrieved for relevant queries.
[Internal Linking](atomicglue.co/glossary/internal-linking) — Internal linking is the practice of linking from one page on a website to another page on the same domain, creating a navigable structure for users and crawlers.
[JSON-LD](atomicglue.co/glossary/json-ld) — JSON-LD (JavaScript Object Notation for Linked Data) is Google's recommended format for implementing structured data, keeping markup separate from HTML in a script tag.
[Keyword Research](atomicglue.co/glossary/keyword-research) — Keyword research is the process of identifying the search terms people use to find content, products, or services, forming the strategic foundation of SEO and content marketing.
[Knowledge Panel](atomicglue.co/glossary/knowledge-panel) — A knowledge panel is a box that appears on Google Search showing summarized information about an entity (person, place, organization, or thing) pulled from Google's Knowledge Graph.
[Link Building](atomicglue.co/glossary/link-building) — Link building is the practice of acquiring hyperlinks from other websites to your own, with the goal of improving search engine rankings through increased authority.
[Link Equity](atomicglue.co/glossary/link-equity) — Link equity (also called link juice) is the value or authority passed from one page to another through hyperlinks, influencing the linked page's ability to rank.
[Local SEO](atomicglue.co/glossary/local-seo) — Local SEO is the practice of optimizing a website and online presence to rank in local search results, targeting users searching for products or services in a specific geographic area.
[Long-Tail Keyword](atomicglue.co/glossary/long-tail-keyword) — A long-tail keyword is a specific, multi-word search phrase that typically has lower search volume but higher conversion intent and less competition than broad terms.
[Meta Description](atomicglue.co/glossary/meta-description) — A meta description is an HTML attribute that provides a brief summary of a web page, often displayed below the title tag in search results.
[Mobile-First Indexing](atomicglue.co/glossary/mobile-first-indexing-seo) — Mobile-first indexing means Google primarily uses the mobile version of a website for indexing and ranking, making mobile optimization a fundamental ranking requirement.
[Mobile-First Indexing](atomicglue.co/glossary/mobile-first-indexing-seo-web-development) — Google's practice of indexing and ranking web content based primarily on the mobile version of a site, not the desktop version.
[Off-Page SEO](atomicglue.co/glossary/off-page-seo) — Off-page SEO refers to actions taken outside your own website to improve its authority, trustworthiness, and search rankings, primarily through link building and brand signals.
[On-Page SEO](atomicglue.co/glossary/on-page-seo) — On-page SEO is the practice of optimizing individual web pages to rank higher by improving content quality, HTML elements, and site structure.
[Organic Search](atomicglue.co/glossary/organic-search) — Organic search refers to unpaid listings in search engine results that appear because of their relevance to the query, not because someone paid for placement.
[PageRank](atomicglue.co/glossary/pagerank) — PageRank is Google's foundational link analysis algorithm that measures the importance of web pages by counting the quality and quantity of links pointing to them.
[People Also Ask](atomicglue.co/glossary/people-also-ask) — People Also Ask (PAA) is a SERP feature that displays related questions to the user's original query, expanding into answers when clicked.
[Rendering](atomicglue.co/glossary/rendering) — Rendering is the process where a browser or search engine executes JavaScript to generate the fully visual and interactive page after receiving the raw HTML.
[Robots Meta Tag](atomicglue.co/glossary/robots-meta-tag) — A robots meta tag is an HTML directive that tells search engine crawlers how to index and interact with a specific page, such as noindex, nofollow, or nosnippet.
[Robots.txt](atomicglue.co/glossary/robots-txt) — Robots.txt is a text file placed at the root of a website that instructs search engine crawlers which URLs they may or may not access.
[Schema Markup](atomicglue.co/glossary/schema-markup) — Schema markup is the implementation of structured data vocabulary (schema.org) on a web page to help search engines understand and display content in rich results.
[Search Intent](atomicglue.co/glossary/search-intent) — Search intent (also called user intent or keyword intent) is the underlying goal a user has when they type a query into a search engine: to learn, to navigate, to buy, or to compare.
[SEO](atomicglue.co/glossary/seo) — Search Engine Optimization (SEO) is the practice of improving a website's visibility in organic search results to earn more relevant traffic.
[SEO Audit](atomicglue.co/glossary/seo-audit) — An SEO audit is a comprehensive analysis of a website's technical health, on-page optimization, off-page authority, and content quality to identify issues and opportunities for improvement.
[SERP](atomicglue.co/glossary/serp) — SERP stands for Search Engine Results Page. It is the page a search engine displays after a user submits a query, containing both organic results and paid listings.
[SERP Features](atomicglue.co/glossary/serp-features) — SERP features are non-standard elements on a search results page, such as AI Overviews, featured snippets, knowledge panels, image packs, and local packs, that go beyond traditional organic blue links.
[Structured Data](atomicglue.co/glossary/structured-data) — Structured data is a standardized format (typically Schema.org vocabulary) for providing information about a page and classifying its content for search engines.
[Technical SEO](atomicglue.co/glossary/technical-seo) — Technical SEO is the practice of optimizing a website's infrastructure so search engines can crawl, index, and render pages efficiently and correctly.
[Title Tag](atomicglue.co/glossary/title-tag) — A title tag is an HTML element that specifies the title of a web page, displayed as the clickable headline in search results and the browser tab label.
[XML Sitemap](atomicglue.co/glossary/xml-sitemap) — An XML sitemap is a file that lists a website's important URLs, helping search engines discover and prioritize pages for crawling.
[YMYL](atomicglue.co/glossary/ymyl) — YMYL stands for Your Money or Your Life. It describes web pages that could impact a person's financial stability, health, safety, or well-being, requiring higher quality standards.