Professional Web glossary

Definitions beginning with L

Search within this letter or use the alphabet to continue exploring the complete glossary.

Browse the glossary

Definitions beginning with L

Search within this letter or use the alphabet to continue exploring the complete glossary.

17 terms displayed

Marketing and acquisition #

Landing page

Landing page designed around one main intent and action, often as part of a campaign.

Also searched as : page destination
Design, UX and accessibility #

Largest Contentful Paint

LCP: Core Web Vitals metric measuring the display time of the largest visible content element.

Also searched as : lcp performance
Development and code #

Lazy loading

Deferred loading of a resource until it is needed or approaches the visible area.

Also searched as : chargement différé
Marketing and acquisition #

Lead

Person or organization showing interest whose details or action allow commercial follow-up.

Also searched as : prospect contact
Marketing and acquisition #

Lead magnet

Resource offered in exchange for contact information, such as a guide, template or assessment.

Also searched as : contenu premium
Design, UX and accessibility #

Lighthouse

Google automated tool auditing performance, accessibility, best practices and certain SEO elements.

Also searched as : audit chrome
Artificial intelligence #

LLM

Large Language Model trained on large volumes of text to understand and generate language.

Also searched as : grand modèle langage
SEO, search and visibility #

LLMO

Optimization of content and signals for understanding and use by large language models. The term often overlaps with GEO and AEO.

Also searched as : llm optimization
SEO, search and visibility #

llms.txt

Text file proposed by an open initiative to point models toward important resources. It is not a universal standard or guarantee of use.

Also searched as : llmstxt ai crawler
Hosting and infrastructure #

Load balancing

Distribution of requests across several servers or instances to improve capacity, availability and resilience.

Also searched as : répartition charge
SEO, search and visibility #

Local SEO

Local search optimization intended to make an activity relevant and visible for geographically related searches.

Also searched as : seo local proximité
Development and code #

localhost

Name referring to the local device used to run or test a service without a remote server.

Also searched as : 127.0.0.1 local
Hosting and infrastructure #

Log file

Log file recording events, errors, access or actions to diagnose and monitor a system.

Also searched as : journal serveur
Security and privacy #

Login

Action or interface used to identify oneself and access an account or protected area.

Also searched as : connexion sign in
SEO, search and visibility #

Long-tail keyword

Long, specific query, often less frequent but closer to a particular need.

Also searched as : longue traîne
← Previous letter K All terms Next letter M →
Editorial method

Definitions written for people, structured for machines.

The entries are editorially reformulated in plain language, connected to stable URLs and represented with DefinedTerm structured data. They provide orientation, not a substitute for official standards, legal advice or vendor documentation.