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    Professional Web glossary

    Definitions beginning with Z

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

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    6 terms displayed
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    Definitions beginning with Z

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

    6 terms displayed

    Design, UX and accessibility #

    z-index

    A CSS property involved in stacking order within a context. A very large value does not necessarily place an element above content in a different stacking context.

    Reference: MDN : z-index · Source consulted

    In practice: Document a layer scale and test overlap with menus and dialogs open.

    Guide: Organize a consistent website design system Also searched as : css stacking
    Data and measurement #

    Zero-party data

    Information a person chooses to provide directly, such as a preference, need or stated intention.

    In practice: Ask for a preference only when it clearly improves the service and can be changed later.

    Guide: Audit and enrich directory or catalogue data Also searched as : donnée déclarée préférence
    Web fundamentals #

    ZIP compression

    Archiving method grouping and compressing one or more files in a ZIP container.

    In practice: Check contents, extracted size and folder structure before distributing an archive.

    Guide: Test website navigation and menus Also searched as : archive zip
    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.