Creative Developer

Helsinki, Finland

Web Glossary

Explore definitions and explanations for terms relating to the world of AI and web design or development. Let this be your guide to the world-wide-web.

A

Agentic codingAgentic coding is software development where an AI agent does the hands-on work. It reads the codebase, edits files, runs commands and tests, and keeps iterating until the task is done. The developer sets the goal, reviews the result and decides what ships.
Agentic workflowAn agentic workflow is a multi-step process where a language model handles some of the steps, such as drafting, classifying, calling tools or checking output. The order of steps is fixed in code. That separates it from an AI agent, which plans its own steps.
AI agentAn AI agent is software that uses a language model to work toward a goal on its own, step by step. It decides what to do next, calls tools such as search, APIs or a browser, checks the result and keeps going until the task is done or it needs a human.
Alt textAlt text is a short written description of an image, stored in the alt attribute of an HTML img element. Screen readers read it aloud and browsers show it when the image fails to load. Good alt text says what the image means in that spot on the page.
APIAn API (application programming interface) is a defined way for one piece of software to request data or actions from another. On the web it usually means sending an HTTP request to a URL and getting a structured response back, typically JSON.

B

BreakpointA breakpoint in web design is a screen or container width at which a responsive layout changes, for example from one column to three. Breakpoints are set in CSS with media queries or container queries. In programming, a breakpoint is also a marker that pauses code in a debugger.

C

ConversionA conversion is a visitor completing an action the website exists to get, such as submitting a contact form or booking a demo. Conversion rate is the share of visitors, or sessions, that convert.

G

Generative AIGenerative AI is artificial intelligence that creates new content, such as text, images, audio or code, from a prompt. It learns patterns from large amounts of training data and produces output that resembles that data, instead of only sorting or scoring what already exists.

K

KeyframeA keyframe is a point in an animation where you define exactly how something looks, such as its position, scale or opacity. The software or browser calculates the frames in between. In CSS, the @keyframes rule lists those points for an animation.

L

Language modelA language model is an AI model trained to predict the next word, or part of a word, in a piece of text. Large language models (LLMs) such as GPT, Claude and Gemini use that ability to answer questions, write, translate, summarize and generate code.

O

OG imageAn OG image is the preview picture shown when a link is shared on social media or in a messaging app. The page sets it with the Open Graph og:image meta tag, and the recommended size is 1200 × 630 pixels.

P

PaginationPagination is splitting a long list of content, such as blog posts, products or search results, into separate pages that visitors move between with numbered links or next and previous buttons. APIs use pagination too, returning large result sets one chunk at a time.

T

V

Vibe codingVibe coding is building software by describing what you want to an AI model and accepting the code it writes without reading it closely. You judge the result by running it and paste any errors back into the chat. Andrej Karpathy coined the term in February 2025.

W