Technical SEO glossary terms - page 2.

Technical SEO DNS Lookup A DNS lookup resolves a domain name to records such as the IP addresses used to reach its services. Technical SEO Domain Entity Domain entity is a non-standard modelling label for a domain name treated as a distinct digital identifier with registration, ownership or service relationships. Technical SEO Duplicate Schema Duplicate Schema occurs when a page emits multiple structured-data representations of the same intended entity or feature. Technical SEO Duplicate URL A Duplicate URL is a distinct web address whose primary content is identical or sufficiently similar to content available at another address for a specified comparison purpose. Technical SEO Dynamic Rendering Dynamic rendering detects selected crawlers and serves them rendered HTML while ordinary users receive a client-rendered version. Technical SEO Faceted navigation Faceted navigation is a filtering interface that lets users narrow a collection by combining attributes such as category, size, color, price or availability. Technical SEO FAQ schema FAQ schema uses FAQPage with Question and acceptedAnswer nodes to describe questions answered authoritatively by one site. Technical SEO Fetch And Render Fetch And Render is a diagnostic process that retrieves a URL, loads permitted resources, executes supported scripts and inspects the resulting document. Technical SEO First Contentful Paint First Contentful Paint records when the browser first renders text, an image, a non-white canvas or an SVG element from the document. Technical SEO First Input Delay First Input Delay was a field metric measuring the wait before the browser began handling a user's first discrete interaction. Technical SEO Full Site Crawl Full Site Crawl describes how bots discover, request or evaluate website URLs, which affects whether important pages can be found and processed. Technical SEO Google Index The Google index is Google’s stored collection of discovered pages that may be considered for search results. Technical SEO Hidden Content on Mobile Hidden content on mobile is page information unavailable or not immediately visible in a smartphone layout or rendered mobile document. Technical SEO HowTo schema HowTo schema uses the Schema.org HowTo type to describe a visible sequence of steps for completing a task. Technical SEO Hreflang Hreflang is an HTML or sitemap signal that tells search engines which language or regional version of a page should be shown to users. Technical SEO HTML sitemap An HTML sitemap is a normal web page that presents organized links to selected areas or pages for human navigation. Technical SEO HTML Validation HTML validation checks a document against machine-testable syntax and conformance requirements in the applicable HTML standard. Technical SEO HTTP Headers HTTP headers are named fields that carry metadata and control information alongside an HTTP request or response. Technical SEO HTTP status code An HTTP status code is a three-digit value in a server response that communicates the outcome of an HTTP request. Technical SEO HTTPS HTTPS is HTTP carried over Transport Layer Security to authenticate the server and protect data confidentiality and integrity in transit. Technical SEO HTTPS SEO HTTPS SEO is a technical signal returned by the server that affects access, crawling, caching, redirects or error handling. Technical SEO Hybrid Indexing Hybrid Indexing relates to whether search engines store, exclude, refresh or retrieve website pages for search results. Technical SEO Ignore 404 Ignore 404 is a reviewed disposition that leaves a genuinely absent URL returning a correct 404 response because no equivalent replacement or required user path exists. Technical SEO Image Indexing Image indexing is the processing through which a search engine records an image and its contextual signals for eligible search features. Technical SEO Image optimization Image optimization delivers each image with suitable dimensions, encoding, compression and loading behavior for its displayed context. Technical SEO Image Sitemap An image sitemap lists image URLs associated with page URLs using Google's image extension to the sitemap protocol. Technical SEO Index An index is the stored database of pages or documents a search system can retrieve and rank for queries. Technical SEO Index Bloat Index bloat occurs when too many low-value, duplicate or thin URLs are indexable, weakening crawl efficiency and search quality signals. Technical SEO Index coverage Index coverage shows which URLs search engines have discovered, indexed, excluded or flagged with indexing issues. Technical SEO Index Freshness Index freshness is the degree to which a search engine's stored representation reflects the current accessible version of a URL. Technical SEO Index Management Index Management relates to whether search engines store, exclude, refresh or retrieve website pages for search results. Technical SEO Indexability Indexability is a page's technical eligibility to be processed for inclusion in a search engine index. Technical SEO Indexability Review An indexability review checks whether important URLs are eligible to be indexed and whether low-value URLs are kept out of the index. Technical SEO Indexed Pages Indexed pages are URLs that a search engine has stored in its index and can potentially show in search results. Technical SEO Indexing Indexing is the stage in which a search engine analyzes retrieved content and may store information about a selected canonical page in its index. Technical SEO Indexing report An indexing report groups observed URL states and reasons showing whether a search engine discovered, fetched, selected or excluded pages within a defined property and observation time. Technical SEO IndexNow IndexNow is a protocol that lets websites notify participating search engines when URLs are created, updated or deleted. Technical SEO Interaction to Next Paint Interaction to Next Paint measures page responsiveness from a click, tap or key press until the browser presents the next visual frame. Technical SEO Internal link depth Internal link depth is the minimum number of crawlable internal-link steps needed to reach a page from a chosen site entry point. Technical SEO Inventory status Inventory status is a practical SEO term used to describe a specific website signal, workflow or optimization area that can influence organic visibility. Technical SEO JavaScript rendering JavaScript rendering is the browser process of executing scripts and updating the document that users and rendering crawlers can inspect. Technical SEO JavaScript SEO JavaScript SEO makes a script-powered site's URLs, content, links, metadata and error states accessible to search crawling and rendering systems. Technical SEO Largest Contentful Paint Largest Contentful Paint measures when the largest eligible image, text block or video poster visible in the viewport finishes rendering. Technical SEO Lazy loading Lazy loading delays fetching or initializing a resource until it is likely to be needed near the user's viewport. Technical SEO Link Rot Link rot is the change over time by which a hyperlink no longer provides access to the resource it originally identified. Technical SEO Local schema Local schema is common shorthand for LocalBusiness structured data describing a specific customer-facing business location. Technical SEO Log file analysis Log file analysis is the examination of server or edge access records to reconstruct requests, responses and crawler activity. Technical SEO Meta Robots Meta robots is an HTML tag used to give indexing and snippet instructions to search crawlers for a specific page. Technical SEO Meta robots tag Meta robots tag controls crawler behavior through page-level or site-level instructions that affect crawl access, indexing and snippets. Technical SEO Minification Minification removes unnecessary characters and may shorten code constructs to reduce a text asset's transfer and parse footprint. Technical SEO Mobile SEO Mobile SEO ensures that smartphone users and mobile crawlers can access equivalent indexable content, metadata, resources and usable interactions. Technical SEO Mobile Usability Mobile usability describes how easy a website is to read, navigate and interact with on mobile devices. Technical SEO Mobile-first indexing Mobile-first indexing means Google primarily uses the smartphone-crawled version of a page's content for indexing and ranking. Technical SEO Nofollow Nofollow is a `rel` value that signals a site does not want Google to treat a particular link as an ordinary unqualified association with its destination. Technical SEO Noindex Noindex is a robots directive that asks compliant search engines not to include a page or resource in search results. Technical SEO Offer schema Offer schema uses Offer to describe the terms under which a seller provides a product, service or other item. Technical SEO Opening hours schema Opening hours schema uses OpeningHoursSpecification to describe when a business location or service opens and closes. Technical SEO Orphan page An orphan page is a live page with no crawlable incoming link from other pages in the site's internal navigation graph. Technical SEO Page Indexing Page Indexing describes a specific page type or page-level SEO asset that should satisfy a clear user intent, carry useful content and fit into the site architecture. Technical SEO Page speed Page speed describes how quickly a page delivers visible content and usable responses across loading, rendering and interaction stages.