SEO & Web Development Glossary

SEO & Web Development Glossary

A

Accessibility
The practice of making websites usable by people with disabilities.
Algorithm
A process or set of rules followed in problem-solving operations. In SEO, search engines use algorithms to rank pages.
Alt Text (Alternative Text)
Descriptive text for images, crucial for accessibility and image SEO.
Anchor Text
The clickable text in a hyperlink.
API (Application Programming Interface)
A set of rules that software programs use to communicate with each other.

B

Backlink
A link from one site to another, important for SEO rankings.
Bounce Rate
The percentage of visitors who leave after viewing only one page.
Breadcrumbs
Navigation aid showing a user's position within site hierarchy.

C

Canonical URL
The preferred URL for a page to avoid duplicate content issues.
Click-Through Rate (CTR)
The percentage of users who click on a specific link.
Content Management System (CMS)
Software for creating and managing digital content (e.g., WordPress).
CSS (Cascading Style Sheets)
A language for describing the presentation of web documents.
Crawler (Spider/Bot)
Program used by search engines to discover and index content.

D

Deindex
Removing a page from a search engine index.
Domain Authority (DA)
Moz metric predicting how well a site will rank.
Duplicate Content
Content that appears on multiple URLs, potentially harming SEO.

E

E-A-T
Google’s concept of Expertise, Authoritativeness, and Trustworthiness.

F

Featured Snippet
A summary shown at the top of Google search results.

H

Heading Tags (H1-H6)
HTML elements to structure content hierarchically.
.htaccess
Apache server configuration file.
HTML (HyperText Markup Language)
The standard language for creating web pages.

I

Index
A search engine’s database of web pages.
Internal Link
A link from one page to another on the same website.

J

JavaScript
A scripting language for web development.
JSON-LD
A structured data format using JavaScript Object Notation.

K

Keyword
A word/phrase used to search online content.
Keyword Density
The frequency of a keyword in content.

L

Landing Page
The page a user lands on after clicking a link.
Link Building
The process of acquiring backlinks.
Long-Tail Keyword
More specific and less common keyword phrase.

M

Meta Description
A brief summary shown in search engine results.
Meta Keywords
A deprecated tag for specifying page keywords.
Mobile-First Indexing
Google uses the mobile version for indexing/ranking.

N

NoFollow
Prevents a link from passing PageRank.
NoIndex
Instructs search engines not to index a page.

O

Off-Page SEO
SEO activities outside your website.
On-Page SEO
SEO within your website (e.g., keywords, structure).
Organic Search Results
Unpaid listings on a search engine results page.

P

Page Authority (PA)
A Moz metric predicting page ranking ability.
Page Speed
The time it takes a page to load.
Permalink
A permanent link to a specific page.
PHP
A server-side scripting language.
PPC (Pay-Per-Click)
Advertisers pay when an ad is clicked.

Q

Query
A search term entered into a search engine.

R

RankBrain
Google's AI-based algorithm for refining search results.
Redirect (301, 302)
Forwarding from one URL to another. 301 is permanent, 302 is temporary.
Responsive Web Design
Design that adjusts to all screen sizes and devices.
Rich Results
Enhanced SERP listings with extra features like stars or images.
Robots.txt
File telling search engines which pages to crawl.

S

Schema Markup
Structured data to help search engines understand content.
SERP
Search Engine Results Page.
Semantic HTML
HTML that describes meaning and structure clearly.
SEO
Improving website visibility on search engines.
Sitemap
XML file that lists a website’s pages.
SSL
Secure Sockets Layer, replaced by TLS.
Structured Data
Code that helps search engines understand your content.

T

Title Tag
HTML element for a page’s title in search results and browser tabs.
TLS
Transport Layer Security, provides encrypted communication.

U

URL
Uniform Resource Locator, a web address.
User Experience (UX)
The overall interaction a user has with a website.
User Interface (UI)
Visual components of a digital product.

V

Viewport
The visible portion of a web page on a device.

W

Webmaster
A person responsible for website maintenance.
Webmaster Tools
Search engine tools like Google Search Console.

X

XML
A markup language used for structuring data.