Content and communication
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H1
Main HTML heading of a page. It should clearly announce the topic rather than being chosen only for visual size.
Also searched as : heading titre principal
Professional Web glossary
Definitions beginning with H
Search within this letter or use the alphabet to continue exploring the complete glossary.
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16 terms displayed
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Definitions beginning with H
Search within this letter or use the alphabet to continue exploring the complete glossary.
16 terms displayed
No term matches these criteria.
Design, UX and accessibility
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Hamburger menu
Navigation button represented by horizontal lines and used to open a compact menu, especially on mobile.
Also searched as : menu burger
Marketing and acquisition
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Hashtag
Word or phrase preceded by # used to group or discover posts on some platforms.
Also searched as : mot dièse social
Development and code
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Head
Part of an HTML document containing metadata, stylesheet links, scripts and information not displayed as main content.
Also searched as : html head metadata
Content and communication
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Headless CMS
CMS managing content without imposing a display interface and generally distributing it through an API.
Also searched as : cms découplé
Data and measurement
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Heatmap
Heatmap visualizing areas of attention, clicks or scrolling from usage data.
Also searched as : carte de chaleur ux
Design, UX and accessibility
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Hero section
Prominent visual area at the top of a page generally presenting the main message and primary action.
Also searched as : bannière principale
SEO, search and visibility
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hreflang
Annotation linking equivalent language or regional page versions to help search engines serve the appropriate variant.
Also searched as : seo multilingue alternate
Security and privacy
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HSTS
HTTP Strict Transport Security: header instructing browsers to use HTTPS only for a domain during a defined period.
Also searched as : strict transport security
Development and code
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HTML
Markup language describing the structure and meaning of content in a Web page.
Also searched as : hypertext markup language
Web fundamentals
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HTTP
HyperText Transfer Protocol: protocol used to exchange resources between clients and servers on the Web.
Also searched as : web protocol
Development and code
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HTTP header
Metadata sent with an HTTP request or response to describe content, caching, security or expected behavior.
Also searched as : en-tête http
Web fundamentals
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HTTP status code
Numeric HTTP response code indicating the result of a request, such as 200, 301, 404 or 500.
Also searched as : code statut http
Hosting and infrastructure
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HTTP/2
HTTP version improving features including multiplexing and header compression over a connection.
Also searched as : http2
Hosting and infrastructure
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HTTP/3
HTTP version based on QUIC, designed to reduce some latency and better handle network changes.
Also searched as : http3 quic
Security and privacy
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HTTPS
Secure HTTP exchange protected by TLS to encrypt data and authenticate the server.
Also searched as : http secure tlsEditorial 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.