Check accessibility, HTML, CSS, broken links & spelling in one tool
Total Validator is a web testing tool that checks websites for accessibility compliance, valid HTML and CSS, broken links, and spelling mistakes in a single run. It performs W3C-conforming accessibility testing against WCAG 2.2, 2.1, 2.0, US Section 508, and ARIA standards, and can validate pages on intranets, behind authentication, or before publishing. Available for Windows, macOS, and Linux, with a CI edition and browser extensions for automated and DOM-based testing.
W3C-conforming accessibility checks against WCAG 2.2, 2.1, 2.0, US Section 508, and ARIA standards.
Validates markup against over twenty W3C and WHATWG standards, including the latest HTML5.
Checks stylesheets against more than sixty W3C CSS specifications to keep design and content flow correct.
High-performance crawler that finds broken links and mixed content across one or more sites.
Language-detecting spell checker that can test content in multiple languages in a single run.
Validate pages that require login, sit on intranets, or are behind authenticating proxy servers.
Test the rendered DOM of JavaScript-based sites using the browser extensions or Web API.
Audit sites against WCAG 2.2 and Section 508 to meet legal accessibility requirements.
Validate HTML, CSS, links and spelling on local pages before publishing them live.
Test internal or login-protected sites that public online validators cannot access.
Run automated accessibility and markup checks in Jenkins, TeamCity or Selenium pipelines.
Start using Total Validator today and boost your productivity.
Visit WebsiteCheck local pages before they go live, with results kept local for security and fast response.
CI edition runs headless and integrates with Jenkins, TeamCity, and Selenium via a Web API and pass/fail exit codes.

AI development platform that builds production-ready full-stack apps with multi-agent collaboration