Glossary

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Faceted Navigation(also: Faceted Search, Faceted Browsing, Faceted Filtering)

A navigation technique that allows users to filter and explore content along multiple dimensions or categories simultaneously, such as by topic, sentiment, date, or rating. In accessibility contexts, faceted navigation can significantly improve the efficiency of information…

Failure Rate(also: FR (accessibility metric))

An accessibility metric introduced by Sullivan and Matson (2000) that, for a given page and a given checkpoint, divides the number of checkpoint violations found by the maximum number of violations that could have occurred on that page. Failure Rate produces a normalised value…

Flashing Content(also: Flashing, Flash)

Visual content that alternates between contrasting states at a rate that can trigger seizures in people with photosensitive epilepsy. WCAG defines a flash as a pair of opposing luminance changes or a transition involving saturated red. Content with more than three flashes per…

Focus Indicator(also: Focus Ring, Visible Focus, Focus Outline)

A visual cue that shows which interactive element on a page or in an application currently has keyboard focus. Focus indicators are typically rendered as an outline, border, or highlight around the focused element. They are essential for keyboard users and screen magnification…

Focus Management(also: Focus Control, Programmatic Focus)

The practice of controlling which element on a web page or application receives keyboard focus, and ensuring that focus moves in a logical and predictable manner as users interact with the interface. Focus management is one of the most challenging aspects of web accessibility…

Focus Order(also: Tab Order, Focus Sequence)

The sequence in which interactive elements receive keyboard focus when a user presses the Tab key or uses other keyboard navigation. In accessibility, a logical focus order that follows the visual and semantic structure of the page is essential for screen reader users and…

Focus trap(also: Keyboard trap, Focus lock)

A web accessibility barrier in which keyboard focus becomes confined to a particular element or region of a page, preventing the user from navigating away using standard keyboard commands. Focus traps are especially problematic for screen reader users and keyboard-only users,…

Form Accessibility(also: Accessible Forms, Form A11y)

The practice of designing and implementing digital forms so they can be effectively completed by people using assistive technologies, particularly screen readers. Key requirements include: every form field must have a programmatically associated label that clearly describes the…

Form Label(also: Input Label, Form Field Label)

A text label programmatically associated with an interactive form control (such as a text input, button, checkbox, or dropdown) that identifies the purpose or function of that control to all users. In HTML, form labels are typically implemented using the <label> element linked…

Form Labeling(also: Form Labels, Input Labels, Programmatic Labels)

The practice of providing descriptive text labels that are programmatically associated with their corresponding form input fields, enabling screen readers to announce what information is expected in each field. Proper form labeling uses HTML label elements with a "for" attribute…

10 results.