Glossary
Searchable terminology from accessibility, web standards, and related fields.
48 results found in Standards.
- ACM Code of Ethics (ACM Code of Ethics and Professional Conduct)
- A statement of professional ethics maintained by the Association for Computing Machinery (ACM) that sets out the moral and professional responsibilities of computing practitioners. Significantly revis…
- ADA (Americans with Disabilities Act)
- A landmark United States civil rights law enacted in 1990 that prohibits discrimination against individuals with disabilities in all areas of public life, including employment, education, transportati…
- ASCII (American Standard Code for Information Interchange)
- A character encoding standard that uses numeric codes to represent letters, digits, punctuation, and control characters in computers and communication equipment. ASCII assigns values 0-127 to 128 char…
- Accessibility Conformance Testing (ACT, ACT Rules Format)
- A W3C technical recommendation that defines a standardized format for writing rules to test web accessibility. The ACT Rules Format provides a consistent structure for describing what to test and what…
- Accessibility conformance (WCAG conformance, Accessibility compliance)
- The degree to which a digital product meets the requirements of an accessibility standard such as WCAG, typically assessed at Level A, AA, or AAA. While conformance provides a measurable baseline for …
- Accessible Canada Act (ACA, Canadian Accessibility Act)
- Canadian federal legislation (S.C. 2019, c. 10) that aims to make Canada barrier-free by 2040 by requiring federally regulated organisations (banks, telecommunications, transportation, the federal gov…
- Application Profile (Metadata Application Profile)
- A customization of an existing metadata standard that selects, constrains, or extends elements to meet the requirements of a particular community or application. In accessibility, application profiles…
- Authoring Tool Accessibility Guidelines (ATAG) (ATAG, ATAG 2.0)
- A W3C Web Accessibility Initiative standard that provides guidelines for designing authoring tools — such as content management systems, website builders, and code editors — that are both accessible t…
- Automated accessibility testing (Automated a11y testing, Accessibility checker)
- The use of software tools to automatically evaluate digital content against accessibility standards, checking for issues like missing alt text, colour contrast violations, missing form labels, untagge…
- BBC Mobile Accessibility Guidelines (BBC MAG)
- A comprehensive set of accessibility standards developed by the BBC for mobile application and web content design. The guidelines cover areas including design, editorial, code, and testing, with speci…
- BITV (Barrierefreie Informationstechnik-Verordnung, Barrier-Free Information Technology Regulation)
- BITV (Barrierefreie Informationstechnik-Verordnung) is the German federal regulation on accessible information technology, mandating that federal government websites and applications be accessible to …
- Bharati Braille (Indian Braille)
- A unified Braille standard for writing text in Indian languages using the six-dot Braille format. Bharati Braille assigns the same Braille cell to phonetically equivalent characters across different I…
- CIE L*a*b* (CIELAB, Lab Color Space, CIE Lab)
- A perceptually uniform colour space defined by the International Commission on Illumination (CIE) in 1976, where the numerical distance between two colour values approximates the perceived visual diff…
- CIE LUV (CIELUV, CIE 1976 L*u*v*)
- A perceptually uniform color space defined by the International Commission on Illumination (CIE) that separates color into luminance (L*) and two chromaticity coordinates (u* and v*). Unlike RGB, whic…
- Checkpoint (WCAG Checkpoint, Success Criterion, Accessibility Checkpoint)
- A checkpoint is a specific, testable accessibility requirement in a set of guidelines — for example, 'provide a text equivalent for every non-text element' is WCAG 1.0 checkpoint 1.1. The term is stro…
- Closed Captioning (CC, Closed Captions)
- Text displayed on a screen that transcribes spoken dialogue, identifies speakers, and describes relevant sound effects in video content. Unlike open captions which are permanently embedded in the vide…
- Colour Contrast (Color Contrast, Contrast Ratio)
- The measurable difference in luminance or colour between two adjacent elements, used to determine readability and visual distinguishability. WCAG defines minimum contrast ratios (4.5:1 for normal text…
- Conformance Review (WCAG Conformance Review, Conformance Evaluation, Accessibility Conformance Review)
- A conformance review is a systematic evaluation of a website or web application against a specific set of accessibility guidelines, most commonly WCAG, to determine whether and to what level the conte…
- Content Dictionary (CD, OpenMath Content Dictionary)
- A formal specification in the OpenMath standard that provides the definition, description, and properties of a collection of related mathematical symbols. Each Content Dictionary defines symbols used …
- Document accessibility (Accessible documents)
- The practice of creating digital documents (PDFs, Word files, presentations, spreadsheets) that can be read and navigated by people using assistive technologies. Key requirements include semantic stru…