THE DIGITAL DICTIONARY

Digital jargon, explained properly.

SEO, web design, development and digital marketing terms explained in plain English, without the agency waffle.

SEO

Search, visibility and the technical foundations behind being found.

Web Design & UX

The structures, decisions and details that make a website easier to use.

Web Development

The code, platforms and infrastructure behind a dependable website.

E-commerce

The parts of an online shop that shape discovery, trust and buying.

Digital Marketing

The channels and measures that help a business earn attention and action.

76 terms

01 / SEO

SEO

Search engine optimisation is the practical work of making a website easier for search engines to understand and easier for the right people to find.

Why it matters

Good SEO connects your expertise with people who are already looking for the thing you do. It is a mix of useful content, technical clarity and consistency rather than a shortcut to instant rankings.

A simple example

A local photographer might optimise a service page around the questions couples ask before booking a wedding photographer.

02 / SEO

Local SEO

Local SEO helps a business appear when people search for a product or service in a particular place.

Why it matters

People often choose from a short list of nearby businesses. Consistent business information, useful local pages, reviews and genuine relevance help you make that shortlist.

03 / SEO

Technical SEO

Technical SEO is the work that helps search engines crawl, understand and index your website effectively.

Why it matters

A beautifully designed website is of limited value if search engines cannot properly access its important content. Technical checks also tend to improve the experience for real people.

A simple example

Reviewing broken links, page speed, redirects, canonical URLs and mobile behaviour is part of a technical SEO review.

04 / SEO

Keyword research

Keyword research is the process of understanding the words and questions people use when they search for something.

Why it matters

It helps a business choose language that matches real demand without forcing awkward phrases into its content. The best research considers the reason behind a search, not just its volume.

05 / SEO

Search intent

Search intent is what someone is actually trying to achieve when they type a query into a search engine.

Why it matters

A page can use the right words and still be unhelpful if it answers the wrong question. Matching intent makes content more useful and usually makes the next step clearer.

A simple example

Someone searching ‘how to choose a web designer’ needs guidance, while someone searching ‘web design Devon’ may be ready to compare providers.

06 / SEO

SERP

SERP stands for search engine results page: the page shown after someone searches for something.

Why it matters

Looking at the results for a query helps you understand what searchers expect, which competitors appear and what kind of page could genuinely add value.

07 / SEO

Organic traffic

Organic traffic is the people who reach your website through unpaid search engine results.

Why it matters

Organic visibility can create a steady source of relevant visits, but it needs useful content and a sound technical foundation to keep earning attention.

08 / SEO

Search visibility

Search visibility is a broad view of how often and how prominently a website appears for relevant searches.

Why it matters

It is more useful than focusing on one ranking in isolation because it shows whether your overall presence is becoming easier to find.

09 / SEO

Crawlability

Crawlability describes how easily search engine crawlers can discover and move through a website.

Why it matters

If important pages are blocked, disconnected or difficult to reach, search engines may not discover the work you have put into them.

10 / SEO

Indexation

Indexation is the process of a search engine storing and considering a page for inclusion in its results.

Why it matters

A page cannot earn organic visibility if it is not eligible to appear. Indexation checks help separate a content problem from an access or configuration problem.

11 / SEO

Sitemap

A sitemap is a file that gives search engines a structured list of the important URLs on a website.

Why it matters

It can help crawlers discover content, particularly on larger or recently changed websites, although it does not guarantee indexing.

12 / SEO

Robots.txt

Robots.txt is a small file that gives automated crawlers instructions about which areas of a website they may request.

Why it matters

A carefully managed file can reduce unnecessary crawling. A mistake can also make important content harder for search engines to access, so it needs to be handled with care.

13 / SEO

Canonical URL

A canonical URL tells search engines which version of similar or duplicated pages should be treated as the main one.

Why it matters

It helps clarify preferred URLs when content is reachable through more than one address, such as filtered catalogue pages or tracking variations.

14 / SEO

301 redirect

A 301 redirect sends visitors and crawlers from an old URL to a new, permanent address.

Why it matters

Redirects are essential when pages move or a website is redesigned. A thoughtful redirect plan helps people find what they expected and protects useful search signals.

16 / SEO

Structured data

Structured data is machine-readable information added to a page to clarify what its content represents.

Why it matters

It can help search engines interpret details such as an organisation, article, service or product. It should describe the page accurately, not promise a search feature.

17 / SEO

Core Web Vitals

Core Web Vitals are a set of user-focused measurements covering loading performance, responsiveness and visual stability.

Why it matters

They turn vague complaints about a slow or jumpy website into signals a team can investigate. Improving them usually benefits visitors as well as search visibility.

18 / SEO

Meta title

A meta title is the page title commonly used by search engines as a clickable result heading.

Why it matters

A clear, accurate title helps someone decide whether a result is relevant before they visit. It should describe the page rather than repeat a keyword unnaturally.

19 / SEO

Meta description

A meta description is a short summary that may appear beneath a page title in search results.

Why it matters

It gives searchers useful context and can make the purpose of a page clearer, even though search engines may choose a different snippet.

20 / SEO

Alt text

Alt text is a concise written description of an image for people who cannot see it and for situations where the image is unavailable.

Why it matters

Good alt text supports accessible browsing and gives search engines context. Decorative images should usually have empty alt text rather than a made-up description.

21 / SEO

Internal linking

Internal links connect pages within the same website.

Why it matters

They help people move to the next useful piece of information and help search engines understand how pages relate to one another.

22 / SEO

E-E-A-T

E-E-A-T stands for experience, expertise, authoritativeness and trustworthiness: qualities search systems look for when assessing useful content.

Why it matters

It is a useful lens for making content more credible and grounded in real experience. It is not a score you can simply add to a page.

23 / Web Design & UX

UX

UX means user experience: the way a person understands, navigates and feels while using a website or product.

Why it matters

A strong visual style cannot compensate for a confusing journey. UX work makes the important actions easier to understand and complete.

A simple example

Clarifying a service page, reducing form friction and making mobile navigation predictable are all UX improvements.

24 / Web Design & UX

UI

UI means user interface: the visual and interactive elements people use to operate a website or product.

Why it matters

Typography, spacing, colour, controls and feedback all affect whether an experience feels clear and trustworthy.

25 / Web Design & UX

Responsive web design

Responsive web design creates layouts that adapt to different screen sizes, input methods and device contexts.

Why it matters

People do not experience your website in one standard viewport. A responsive site keeps content legible and actions usable from a phone to a large desktop.

26 / Web Design & UX

Mobile-first design

Mobile-first design starts by solving the constraints of a small screen before expanding the experience for larger screens.

Why it matters

It forces a team to prioritise the content and actions that matter, rather than hiding a desktop layout inside a smaller viewport.

27 / Web Design & UX

Information architecture

Information architecture is the structure and labelling system that helps people find their way through content.

Why it matters

Clear navigation is not decoration. It reduces the effort needed to understand what a business offers and where to go next.

28 / Web Design & UX

User journey

A user journey maps the steps, questions and decisions someone moves through while trying to achieve something.

Why it matters

Seeing the whole route reveals gaps between landing on a page and taking action, including moments where people need more proof or clarity.

29 / Web Design & UX

Wireframe

A wireframe is a simplified layout that explores structure, content priority and interaction before visual polish is added.

Why it matters

It is cheaper to solve a confusing layout in a wireframe than after development. Wireframes keep early conversations focused on purpose.

30 / Web Design & UX

Prototype

A prototype is an interactive representation of a product or page used to explore how it behaves before it is built.

Why it matters

Prototypes let teams test a journey, explain a concept and find issues while changes are still relatively easy.

31 / Web Design & UX

Design system

A design system is a shared set of visual rules, components and guidance for creating a consistent digital experience.

Why it matters

It helps a website stay coherent as more pages and features are added, while reducing repeated design and development work.

32 / Web Design & UX

Conversion rate optimisation

Conversion rate optimisation, or CRO, is the process of improving a digital journey so more of the right visitors complete a valuable action.

Why it matters

It focuses attention on whether a website is helping the business, not just whether people arrive. Useful CRO starts with evidence and clear user needs.

33 / Web Design & UX

CTA

A CTA, or call to action, is a prompt that invites someone to take the next step.

Why it matters

Clear calls to action reduce uncertainty. The best one describes a useful next step rather than shouting for attention.

A simple example

‘View the work’ and ‘Tell us about your project’ are more informative than a generic ‘Click here’.

34 / Web Design & UX

Above the fold

Above the fold refers to the part of a page visible before someone scrolls.

Why it matters

It should establish relevance and provide a clear route onwards, but it does not need to contain everything. Good pages reward scrolling.

35 / Web Design & UX

Accessibility

Accessibility means designing and building digital experiences that can be used by people with a wide range of abilities and assistive technologies.

Why it matters

Accessible websites are more inclusive and often clearer for everyone. Keyboard access, readable contrast, meaningful labels and sensible structure are practical foundations.

36 / Web Design & UX

Usability

Usability describes how easily people can understand and use a website to achieve what they came to do.

Why it matters

A usable website makes fewer demands on attention and memory. That builds confidence and reduces avoidable drop-off.

37 / Web Development

HTML

HTML is the markup language that gives web content its structure and meaning.

Why it matters

Headings, links, lists, forms and landmarks give people and machines a reliable way to understand a page. Good HTML is an accessibility and SEO foundation.

38 / Web Development

CSS

CSS is the language used to control the presentation and layout of web pages.

Why it matters

It handles things such as typography, spacing, colour, responsive layouts and states without mixing visual rules into the content structure.

39 / Web Development

JavaScript

JavaScript is a programming language used to add behaviour and interactivity to websites.

Why it matters

It can make an interface feel immediate and useful, but it should enhance a solid HTML experience rather than become a requirement for basic content.

40 / Web Development

Front-end

Front-end development is the part of building a website that runs in the browser and creates the interface people use.

Why it matters

Good front-end work turns design into a fast, responsive and accessible experience across real devices.

41 / Web Development

Back-end

Back-end development covers the server-side logic, data and integrations that support a website or digital product.

Why it matters

The back end handles the work users do not see, such as processing forms, retrieving content and connecting services securely.

43 / Web Development

API

An API is a defined way for different software systems to exchange data or request actions.

Why it matters

APIs allow websites to connect with tools such as payments, booking systems, CRMs, stock platforms and search services without rebuilding everything in one place.

44 / Web Development

Hosting

Hosting is the service and infrastructure that stores a website and makes it available on the internet.

Why it matters

Hosting affects reliability, speed, security, deployment and how easily a website can grow. It is part of the product, not an afterthought.

45 / Web Development

Domain

A domain is the human-readable address people use to reach a website, such as dreampixel.co.uk.

Why it matters

A clear, trusted domain makes a business easier to remember and gives the website a stable public address even when the underlying hosting changes.

46 / Web Development

DNS

DNS, or the Domain Name System, directs a domain name to the servers and services that should respond to it.

Why it matters

DNS sits behind website hosting, email and verification services. Small configuration mistakes can make a working website or mailbox appear unavailable.

47 / Web Development

SSL

SSL is the common term for the encryption that protects data travelling between a browser and a website, usually shown by HTTPS.

Why it matters

Encryption protects visitors and is a basic expectation for trust, forms and modern web browsers.

48 / Web Development

CDN

A CDN, or content delivery network, serves cached website files from locations closer to the people requesting them.

Why it matters

Serving assets closer to visitors can reduce loading time and improve resilience, particularly for sites with a distributed audience.

49 / Web Development

Website migration

A website migration is a significant change to a site’s platform, domain, structure, design or hosting.

Why it matters

Migrations combine technical, content and SEO risk. Planning URLs, redirects, analytics and launch checks early prevents avoidable surprises.

50 / Web Development

HTTP status codes

HTTP status codes are server responses that describe what happened when a browser or crawler requested a URL.

Why it matters

Codes such as 200, 301, 404 and 500 help teams diagnose broken journeys, redirects and server problems.

51 / Web Development

404

A 404 is an HTTP response meaning the requested page could not be found at that address.

Why it matters

Broken links are frustrating, but a helpful 404 page can guide someone back to relevant content while the underlying URL is fixed.

52 / Web Development

Server-side rendering

Server-side rendering creates a page’s HTML on the server before sending it to the browser.

Why it matters

It can improve the first experience of a page and gives crawlers meaningful HTML to work with, depending on the project and data needs.

53 / Web Development

Client-side rendering

Client-side rendering uses browser JavaScript to assemble or update parts of a page after it loads.

Why it matters

It can create rich app-like interactions, but important content should not become inaccessible to people or crawlers when JavaScript is delayed or unavailable.

54 / Web Development

Headless CMS

A headless CMS manages content separately from the front-end presentation layer, delivering it through an API.

Why it matters

This separation can support multiple channels and bespoke interfaces, but it also introduces more technical decisions than a traditional CMS.

55 / Web Development

Website performance

Website performance is how quickly and reliably a site loads, responds and remains stable while someone uses it.

Why it matters

Performance affects patience, accessibility, conversion and search visibility. It is shaped by design, content, code, hosting and third-party services together.

56 / E-commerce

E-commerce

E-commerce is the buying and selling of products or services through a digital storefront.

Why it matters

A successful store needs more than product grids. Trust, discovery, stock, payments, delivery and support all shape the customer journey.

57 / E-commerce

Product page

A product page is the page where someone learns enough about an item to decide whether to buy it.

Why it matters

Good product pages answer practical questions, make value clear and remove uncertainty around price, options, delivery and returns.

58 / E-commerce

Shopping cart

A shopping cart holds the products someone intends to purchase before checkout.

Why it matters

A useful cart keeps choices visible, makes changes easy and avoids surprising costs or unclear next steps.

59 / E-commerce

Checkout

Checkout is the part of an online shop where someone confirms their order, provides details and pays.

Why it matters

Unnecessary fields, uncertainty and technical errors at checkout create expensive abandonment. Clarity and reassurance matter here more than cleverness.

60 / E-commerce

Payment gateway

A payment gateway securely passes payment information between a customer, a merchant and a payment provider.

Why it matters

The gateway is part of a wider checkout experience involving trust, supported payment methods, fraud controls and reliable order confirmation.

61 / E-commerce

Product schema

Product schema is structured data that describes details such as a product’s name, price, availability and reviews in a machine-readable format.

Why it matters

Accurate product information can help search engines interpret a catalogue. It must match what people can actually see and buy on the page.

62 / E-commerce

E-commerce SEO

E-commerce SEO helps product and category pages appear for searches made by people looking to explore or buy.

Why it matters

It combines technical foundations with useful product information, sensible catalogue structure and a clear understanding of how people compare options.

63 / E-commerce

Conversion rate

Conversion rate is the percentage of people who complete a defined action from the people who had the opportunity to do it.

Why it matters

It gives a useful way to assess a journey, but the percentage needs context. More conversions are not automatically better if quality or customer fit falls.

64 / E-commerce

Product feed

A product feed is a structured file or connection that sends catalogue information to another service, such as an advertising or shopping platform.

Why it matters

Accurate feeds keep product names, prices, availability and images aligned wherever a customer discovers the catalogue.

65 / E-commerce

Customer journey

A customer journey describes the stages someone moves through from first awareness to purchase and what happens afterwards.

Why it matters

Understanding the wider journey helps a store fix the right problem instead of polishing one screen while the surrounding experience remains uncertain.

66 / Digital Marketing

PPC

PPC, or pay-per-click advertising, is a model where an advertiser pays when someone clicks an advert.

Why it matters

PPC can put a relevant offer in front of people quickly, but it needs clear targeting, useful landing pages and measurement to be worthwhile.

68 / Digital Marketing

Content marketing

Content marketing uses useful, relevant content to attract, help and build trust with a particular audience.

Why it matters

It gives a business a way to demonstrate how it thinks before asking someone to enquire. The content works best when it has a clear audience and job.

69 / Digital Marketing

Digital PR

Digital PR is the work of creating and sharing credible stories, expertise or assets that earn attention and references online.

Why it matters

Useful coverage and mentions can build trust and help people discover a business. It is stronger when the story comes from something real rather than manufactured noise.

70 / Digital Marketing

Social media marketing

Social media marketing uses social platforms to build awareness, relationships and action around a business.

Why it matters

The right platform and format depend on the audience and the business. Consistent, useful communication usually outperforms posting without a purpose.

71 / Digital Marketing

Remarketing

Remarketing shows follow-up messages or adverts to people who have already interacted with a business or website.

Why it matters

It can help a considered purchase stay visible, but it needs sensible frequency, clear consent and a message that adds something new.

73 / Digital Marketing

Conversion tracking

Conversion tracking records when someone completes a valuable action, such as submitting a form, calling or buying.

Why it matters

Without reliable tracking, marketing decisions become guesswork. Tracking should respect privacy and measure actions that matter to the business.

74 / Digital Marketing

Analytics

Analytics is the collection and interpretation of information about how people find and use a website or campaign.

Why it matters

Good analytics helps a team ask better questions about behaviour and outcomes. It should inform judgement, not replace it with a dashboard of vanity numbers.

75 / Digital Marketing

Attribution

Attribution is the method used to understand which interactions may have contributed to a conversion.

Why it matters

People often use several channels before making a decision. Attribution can add context, but no model perfectly explains a human journey.

76 / Digital Marketing

Lead generation

Lead generation is the process of attracting and capturing interest from potential customers.

Why it matters

The quality of a lead matters as much as the quantity. Clear positioning, useful content and a low-friction next step help the right people raise their hand.

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