Glossary
Searchable terminology from accessibility, web standards, and related fields.
30 results found in accessibility testing.
- Acceptance Testing (User Acceptance Testing, UAT, Acceptance Tests)
- A form of software testing that validates whether a system meets its specified requirements from the end user's perspective. In accessibility, acceptance tests simulate real user interaction scenarios…
- Accessibility Crawler (automated accessibility crawler, app crawler for accessibility)
- An automated tool that systematically explores an application's user interface—by simulating taps, swipes, and navigation—to discover screens and UI components and then evaluate each against accessibi…
- Accessibility Evaluation (Accessibility Audit, Accessibility Assessment, Accessibility Review)
- The process of assessing whether a digital product, website, or application meets accessibility standards and is usable by people with disabilities. Accessibility evaluation typically combines automat…
- Accessibility Linter (A11y Linter, Accessibility Lint)
- A static analysis tool that scans source code — typically HTML, CSS, and related web technologies — for accessibility violations against standards such as WCAG. Accessibility linters can be integrated…
- Accessibility Metric (Web Accessibility Metric, Accessibility Score)
- A quantitative measure used to assess and compare the accessibility quality of web pages or websites. Accessibility metrics typically calculate a score (often 0-100%) based on the number and severity …
- Accessibility Monitoring (Web Accessibility Monitoring, Accessibility Observatory)
- Accessibility monitoring is the ongoing process of tracking and measuring the accessibility level of websites or digital products over time. Because web content is frequently updated, changes can inad…
- Accessibility overlay (Accessibility widget, Accessibility plugin, Overlay tool)
- A software layer, typically implemented as a JavaScript widget or browser extension, that applies modifications to a website's presentation or behavior with the goal of improving accessibility. Overla…
- Automated Accessibility Testing (Automated Testing, Accessibility Scanning, A11y Testing)
- The use of software tools to programmatically check web content against accessibility guidelines such as WCAG, identifying issues like missing alternative text, insufficient color contrast, empty link…
- Automated Evaluation Tool (AET, Automated Testing Tool, Accessibility Checker)
- Software that automatically scans websites, applications, or documents to detect accessibility violations against standards such as WCAG or Section 508. Common examples include WAVE, axe, AChecker, an…
- Barrier Walkthrough (Structured Walkthrough)
- A systematic accessibility evaluation method that guides evaluators through the process of identifying barriers that people with disabilities may encounter on a website. Unlike a standard conformance …
- Behaviour-Driven Development (BDD, Behavior-Driven Development)
- A software development methodology that extends Test-Driven Development by writing test cases as human-readable scenarios in natural language, describing expected system behaviour from the user's pers…
- Bobby (Bobby Worldwide, Watchfire Bobby)
- Bobby was one of the earliest and most widely used automated web accessibility testing tools, developed by the Center for Applied Special Technology (CAST) and later acquired by Watchfire (subsequentl…
- Character Error Rate (CER)
- A metric for evaluating automatic speech recognition (ASR) and optical character recognition (OCR) accuracy, measuring the minimum number of character-level edits (insertions, deletions, substitutions…
- Chartability (Chartability Heuristics)
- A set of heuristics for assessing the accessibility of data visualizations, developed by Frank Elavsky and the Dataviz Accessibility group. Chartability provides a systematic framework for evaluating …
- Conformance Evaluation (Conformance Assessment, Accessibility Conformance Testing)
- The process of systematically assessing whether a website, application, or digital product meets the requirements of a specific accessibility standard, typically WCAG at a designated conformance level…
- Conformance Testing (Compliance Testing, Guideline Review)
- An accessibility evaluation method that checks whether a website or digital product meets the requirements specified by accessibility guidelines or standards such as WCAG. Conformance testing can be p…
- EARL (Evaluation and Report Language)
- A machine-readable format developed by the W3C for expressing the results of accessibility evaluations in a standardized way. EARL uses RDF (Resource Description Framework) to describe test results in…
- Evaluator Effect
- The phenomenon in accessibility and usability evaluation where different evaluators examining the same interface detect different sets of problems and may reach different conclusions about the same is…
- Failure Mode (Accessibility failure mode)
- In accessibility evaluation, any hindrance caused by a product or web site that prevents a user with a disability from achieving a goal with the same effectiveness, efficiency or safety as a non-disab…
- Heuristic Evaluation (Expert Review, Heuristic Review)
- An accessibility or usability evaluation method in which evaluators examine an interface against a set of recognised principles (heuristics) to identify potential problems. In web accessibility, heuri…