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Website development

A glossary of concepts related to designing, building and maintaining modern websites.

Website development

Website development is the process of designing, coding, testing and publishing websites. It combines visual, technical and usability layers so that a site is clear, fast, accessible and works correctly across devices and browsers.

Scope of the concept

This area includes preparing HTML structure, CSS styles, page layouts, navigation, forms, graphics, icons, interface components and conversion-supporting elements such as CTAs and landing pages. Responsiveness, performance optimization and compliance with digital accessibility requirements are also important parts of the work.

Technologies and standards

Commonly used technologies include HTML, CSS, JavaScript, SCSS, LESS, SVG, WebP, AVIF, Git and tools for designing wireframes and prototypes. WCAG standards, semantic HTML headings, lazy loading, media queries, viewport settings, cross-browser compatibility and good UX practices are also essential.

Business value

A well-designed website supports brand visibility, sales, user service and company credibility. Quality of implementation affects SEO, loading speed, accessibility of online services and the effectiveness of marketing campaigns.

Example roles

Frontend Developer
Web Developer
UI Developer
WordPress Developer
UX/UI Designer
Web Designer
Accessibility Specialist
Webmaster

Keywords

Language versions

Alphabetical filter

Dictionary entries

61 results

Testy A/B

Analytics, Website developmentEN

A/B Testing

Split testing

A/B testing is an experimental method for comparing two versions of a website, application or interface element to determine which one achieves a defined business goal more effectively.

Link bezwzględny

Website developmentEN

Absolute link

Absolute URL, absolute hyperlink

An absolute link is a complete URL containing the protocol, domain and path to a specific resource. It works independently of where it is used.

AJAX

Website developmentEN

AJAX

Asynchronous JavaScript and XML

AJAX is a web development technique that enables data exchange with a server without fully reloading the page.

Atrybut alt

SEO and SEM, Website developmentEN

Alt Attribute

Alternative text, alt text

The alt attribute is a textual alternative to an image in HTML. It supports accessibility, helps search engines understand image content and can improve image SEO.

AMP

Website developmentEN

AMP

Accelerated Mobile Pages

AMP, or Accelerated Mobile Pages, is a technology for creating simplified websites that load quickly on mobile devices.

ATF

Website developmentEN

ATF

Above the Fold, above-the-fold area

ATF, or Above the Fold, is the part of a page visible without scrolling. Its optimization affects first impressions, usability, conversions and SEO.

AVIF

Computer graphics, Website developmentEN

AVIF

AV1 Image File Format

AVIF is a modern image format based on the AV1 codec that delivers high quality with smaller files than JPEG and PNG.

Bitmapa

Computer graphics, Website developmentEN

Bitmap

Raster graphics

A bitmap is a digital image made up of a grid of pixels, with each point storing a specific color and level of detail.

Breadcrumbs

Website developmentEN

Breadcrumbs

Breadcrumb navigation

Breadcrumbs show users where they are within a website and make it easier to move between categories and subpages.

Brotli

Backend, Website developmentEN

Brotli

Brotli Compression

Brotli is a lossless data compression algorithm that reduces web file sizes and speeds up delivery to the browser.

Cache-Control

Backend, Website developmentEN

Cache-Control

Cache-Control HTTP header

Cache-Control is an HTTP header that defines how browsers, proxy servers and CDNs should store and reuse website resources.

CakePHP

Backend, Website developmentEN

CakePHP

CakePHP Framework

CakePHP is an open-source PHP framework based on MVC that accelerates the development of secure, scalable and well-structured web applications.

Canva

Computer graphics, Online Marketing, Website developmentEN

Canva

Canva.com

Canva is an online tool for quickly creating graphics, presentations, marketing materials and social media designs.

Cookies

Analytics, Website developmentEN

Cookies

cookie files, browser cookies

Cookies are small text files stored by a browser to support sign-ins, shopping carts, analytics and website personalisation.

Cross-browser compatibility

Website developmentEN

Cross-browser compatibility

Browser compatibility

Cross-browser compatibility is the ability of a website or web application to work correctly across different browsers, browser versions and operating systems.

CSS

Website developmentEN

CSS

Cascading Style Sheets

CSS is a style sheet language that defines the appearance, layout and responsiveness of websites created with HTML.

CTA

Online Marketing, Website developmentEN

CTA

Call to action, action prompt

CTA, or call to action, is a prompt that guides users towards a specific step, such as making a purchase, getting in touch, signing up, downloading a file or viewing an offer.

Dostępność cyfrowa

Website developmentEN

Digital accessibility

Web accessibility

Digital accessibility means designing websites, applications and documents so that everyone, including people with disabilities, can use them.

Atrybut Dofollow

SEO and SEM, Website developmentEN

Dofollow Attribute

Dofollow link

The dofollow attribute describes the default way search engine crawlers treat a link. A link may pass SEO signals to the target page when it is valuable, natural and crawlable.

Dropdown menu

Website developmentEN

Dropdown menu

Drop-down menu

A dropdown menu lets users choose from multiple options without taking up additional space on a website or in an application.

European Accessibility Act

Website developmentEN

European Accessibility Act

European Accessibility Act, EAA

The European Accessibility Act is EU legislation requiring greater accessibility of digital products and services for people with disabilities.

Nawigacja fasetowa

Online stores, Website developmentEN

Faceted navigation

Faceted filtering

Faceted navigation is a multi-criteria filtering system for products or content that helps users quickly find relevant results on large websites.

Favicon

Computer graphics, Website developmentEN

Favicon

Website icon, site icon, favorite icon

A favicon is a small icon that identifies a website in browser tabs, bookmarks and sometimes search results. Learn about its formats, sizes and HTML implementation.

Git

Programming, Website developmentEN

Git

Distributed version control system

Git is a distributed version control system for tracking changes, working with branches and collaborating safely on IT projects.

GitHub

Programming, Website developmentEN

GitHub

GitHub platform

GitHub is a cloud-based platform built around Git for storing code, tracking changes, collaborating on projects, reviewing code and automating deployments.