SEO & AIO Glossary
Your dictionary for the modern web. Understand the terms that power Search Engines and AI Answer Engines.
301 Redirect
A permanent redirect that passes full link equity (SEO ranking power) to the new URL.
Use Redirect Checker →302 Redirect
A temporary redirect that suggests the original URL should still be indexed.
Use Redirect Checker →AEO (Answer Engine Optimization)
Optimizing content to appear in direct answers provided by AI like ChatGPT or Perplexity.
Alt Text
Text description of an image, used by screen readers and search engines to understand image content.
Anchor Text
The clickable text in a hyperlink. SEOs use it to signal relevance to target pages.
Backlink
A link from one website to another. A key ranking factor for SEO authority.
Canonical Tag
An HTML code that tells search engines which version of a page is the 'master' copy to avoid duplicate content.
Citation Readiness
A measure of how easily an AI model can verify and cite facts from your content.
Check Citation Readiness →Core Web Vitals
Google's set of metrics measuring speed, responsiveness, and visual stability.
Crawl Budget
The number of pages a search engine bot will crawl on your site within a given timeframe.
CSP (Content Security Policy)
A security header that prevents cross-site scripting (XSS) attacks.
DNS (Domain Name System)
The phonebook of the internet, translating domain names into IP addresses.
Dofollow Link
A standard link that passes PageRank authority to the destination URL.
Domain Authority (DA)
A metric predicting how well a website will rank on search engine result pages.
Duplicate Content
Content that appears on more than one place on the Internet, which can confuse search engines.
External Link
A hyperlink that points to any domain other than the domain the link exists on (source).
FAQ Schema
Structured data that marks up lists of questions and answers, potentially earning rich snippets.
H1 Tag
The main heading of a page. It should describe the page's main topic and include target keywords.
HSTS
HTTP Strict Transport Security. Forces browsers to use secure HTTPS connections.
HTTP Headers
Data sent by the web server before the page content, controlling caching, security, and more.
Indexability
The ability of a search engine bot to add a page to its index.
Internal Link
A link from one page on a website to another page on the same website.
JSON-LD
The preferred format for adding Schema.org structured data to a webpage.
Keyword Density
The percentage of times a keyword or phrase appears on a web page compared to the total number of words.
llms.txt
A standardized markdown file proposed to help LLMs understand a project's documentation.
Generate llms.txt →Meta Tags
Snippets of text that describe a page's content; usually found in the page's code.
Check Meta Tags →Nofollow Link
A link attribute that tells search engines not to pass authority to the linked page.
Noindex Tag
A meta tag instructing search engines not to include a specific page in search results.
OpenGraph (OG)
A protocol that allows you to control how your page looks when shared on social media.
Check Meta Tags →Organic Traffic
Visitors who land on your website from unpaid search results.
PageRank
Google's algorithm for ranking web pages in search engine results.
Redirect Chain
A series of redirects between the initial URL and the final destination URL.
Use Redirect Checker →Redirect Loop
An error where a redirect leads back to itself or an earlier step in the chain.
Use Redirect Checker →Robots.txt
A text file that tells search engine crawlers which pages or files they can or can't request from your site.
Test Robots.txt →Schema Markup
Code (semantic vocabulary) that you put on your website to help search engines return more informative results.
SERP
Search Engine Results Page. The page you see after entering a query into Google.
Sitemap
A file where you provide information about the pages, videos, and other files on your site, and the relationships between them.
Validate Sitemap →SSL Certificate
A digital certificate that authenticates a website's identity and enables an encrypted connection (HTTPS).
Status 404
Status code meaning 'Not Found'. The server cannot find the requested resource.
Status 500
Internal Server Error. A generic error message given when an unexpected condition was encountered.
Structured Data
A standardized format for providing information about a page and classifying the page content.
Twitter Card
A variation of Open Graph tags specifically for formatting links shared on Twitter.