Layout & CSS Core A2 · Formal specification

Text Truncation

Text truncation cuts off text to save space. An ellipsis shows that one or more lines are missing.

See how it works
You might call it ellipsisline clamp

See how it works

Original worked exampleText Truncation

Another example

A project title stops after two lines and ends with an ellipsis. The detail page still shows the full title.

Main parts

  1. 01Outer constraint
  2. 02Content and spacing model
  3. 03Computed size or reflow result

Use it when

Use it in repeated, compact items when people can still reach the full text.

Do not use it when

Never cut off unique IDs, prices, errors, or any text needed to make a choice.

Name used in code

text-overflow / line-clamp

Before you ship

Check content order, shared design values, component consistency, contrast, zoom, and layout changes by screen size. Verify every theme, language, and state. If there is motion, offer an equal reduced-motion experience.

Request you can copy

Outcome: Use or define Text Truncation to make the visual experience clear and easy to use. User context: A project title stops after two lines and ends with an ellipsis. The detail page still shows the full title. Design concept to apply: Text Truncation. Why it fits: Use it in repeated, compact items when people can still reach the full text. Do not use it when: Never cut off unique IDs, prices, errors, or any text needed to make a choice. Design requirements: Set the content order, shared design values, and reusable components. Define how the layout changes by screen size and state. Keep useful design choices separate from decoration. Inclusion and resilience: Check contrast, zoom, languages, themes, and reduced motion when needed. Do not use color or effects as the only way to show meaning. Acceptance criteria: The design stays clear on phones and desktops, at zoom, in every theme, and in all supported languages. Interactive states stay clear and consistent. Evidence and limits (evidence boundary): A formal document may still be a draft, release candidate, or final version. Check its status and browser or platform support. Unknowns to confirm: Brand limits, amount of content, supported themes and languages, target devices, and design-system rules.

Check this request

Review the current use of Text Truncation. Definition: Text truncation cuts off text to save space. An ellipsis shows that one or more lines are missing. Release checks: Check content order, shared design values, component consistency, contrast, zoom, and layout changes by screen size. Verify every theme, language, and state. If there is motion, offer an equal reduced-motion experience. Before changing code, report the evidence you found, gaps, severity, and the smallest safe fix.

A2
How official is this term?

Formal specification

A published, versioned formal specification defines this term for the listed technical scope.

A formal document may still be a draft, release candidate, or final version. Check its status and browser or platform support.

Scope
CSS overflow and line clamping
Document status
draft
Checked on
2026-07-30

Evidence sources & scope

Authority source + Term reference · W3C CSS Working Group · draft CSS Overflow Module Level 4 — Limiting visible lines: line-clamp Limiting visible lines: line-clamp Scope: CSS overflow and line clamping; direct scope: Limiting visible lines: line-clamp Role here: Direct term reference Source covers: canonical name, definition, semantics, implementation Authority source · W3C CSS Working Group · draft CSS Overflow Module Level 4 Scope: CSS overflow and line clamping Role here: Authority within stated scope Source covers: canonical name, definition, semantics, implementation

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