Compare the Top Free Web Accessibility Testing Tools as of April 2025

What are Free Web Accessibility Testing Tools?

Web accessibility testing tools are designed to help website and web app developers ensure that their sites and applications are accessible to everyone, including people with disabilities. Web accessibility testing tools streamline the process of making all aspects of a website or web app accessible to all users. Compare and read user reviews of the best Free Web Accessibility Testing tools currently available using the table below. This list is updated regularly.

  • 1
    UserWay

    UserWay

    UserWay Inc.

    UserWay is a leader in digital accessibility compliance, committed to empowering the fundamental human right for inclusive digital experiences and usability. Trusted by over 1 million websites across the globe, UserWay’s AI-powered technologies break down barriers hindering digital inclusion, ensuring that every digital interaction is seamless and user-friendly. UserWay’s team of web accessibility experts combine a deep legal and technical prowess, ensuring compliance with multiple global laws and standards, including WCAG 2.2, ADA, EN 301-549, and Section 508. In addition to the cutting-edge Accessibility Widget, UserWay's suite of offerings include the Accessibility Scanner that automates violation detection and remediation, and manual Accessibility Audits. Their Accessibility Plugin provides native integration for seamless accessibility enhancement. Discover why millions of users rely on UserWay’s accessibility solutions for inclusion and compliance.
    Leader badge
    Starting Price: $49 per month
    Partner badge
    View Tool
    Visit Website
  • 2
    CSS HTML Validator

    CSS HTML Validator

    AI Internet Solutions LLC

    CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.
    Starting Price: $79 (one time)
  • 3
    Sitemorse

    Sitemorse

    Sitemorse

    Globally, organisations are dependent on their websites, and Sitemorse identifies areas that help reduce: litigation risk, damage to your reputation, damage to your online experience, and unintended discrimination. We help you understand the quality of your website and how it complies with standards, rules and regulations. Don't let them tell you everything is great, let us give you a second opinion. You can address issues quickly using the prioritised, simple to understand to-do lists which are accompanied by concise help videos. Most organisations do not deliver effective and efficient digital management and fail to address the key challenges of the new digital landscape. This is usually down to human limitations of not being able to continually assess content, page by page, manually. The Sitemorse Intelligence Engine (SMIE™) automates this, ensuring content rules and standards are consistently applied to content as well as checking for regulatory compliance.
    Starting Price: $29
  • 4
    TPGi ARC Platform
    What is Accessibility Resource Center (ARC)? TPGi’s Accessibility Resource Center (ARC) provides organizations with a platform and suite of accessibility tools to support them at each stage of their accessibility journey. ARC helps teams to adopt a continuous accessibility strategy and embed accessibility testing into their SDLC. ARC includes a scanning and monitoring tool, a library of KnowledgeBase articles, user flow mapping, and testing, and individualized training courses that are integrated and provide code-level techniques in the context of solving a specific problem. Accessibility Resource Center (ARC) Features: ARC Monitoring; ARC KnowledgeBase; ARC User Flows; ARC API; ARC Tutor; ARC HelpDesk; ARC Workspaces; ARC Test Initiatives
    Starting Price: $29 per user/month
  • 5
    EqualWeb

    EqualWeb

    Equalweb

    EqualWeb scans your website domain to uncover any possible issues that may hinder accessibility or result in a violation risk for your organization. It`s fully customizable and easily adapts to your website - insert your domain and let`s get started. Data - more than 100,543,679 web pages from more than 50 CMSs made accessible on our platform. Our platform`s database contains more than 1,000,000 accessibility remediation rules. Our machine learning algorithms analyzes the data to identify patterns and trends in accessibility issues and learn to predict the remediation labels of new data. We analyze your site from the ground up and introduce the accessibility rules that fit your code, content, and style. This automated process is designed to fix common issues and bring your website up to 95% compliance! In order to reach full compliance, our accessibility experts and QA team (comprised of people with disabilities) review your website and perform a manual audit with the reader software.
    Starting Price: $39 per month
  • 6
    Tenon

    Tenon

    Tenon.io

    Every user should have equal access to your website. Tenon's tools, testing and training fix accessibility for your entire organization. Need an automated accessibility testing tool? Our API integrates into your development pipeline. Need an accessible website asap? Tenon's testers, developers and auditors fix accessibility fast. Need to fix accessibility forever? Tenon can help you to become an accessible organization. Tenon doesn't just make the best automated accessibility testing tools on the market; we can solve any accessibility problem. Tenon has produced hundred of VPATs and accessibility audits. Our rapid remediation service fixes accessibility issues on your website while testing is ongoing. Our developers can train your dev team to write accessible code and help you to define the KPIs and processes you need to become a truly accessible organization. Tenon can ensure your latest pull request is approved or crawl your project weekly and send you a report by e-mail.
    Starting Price: $82 per month
  • 7
    Stark

    Stark

    Stark

    While Stark today lives in your design and development software, it supports you and your team through the entire product lifecycle. Stark makes it effortless to design and build accessible products from the start by providing you the right tools right where you need them: your design and dev software of choice. Use Stark to make changes and updates to your existing components to ensure your design system meets current accessibility standards. Designer, PMs and Engineers use Stark to check on UI elements and code to ensure they are accessible and meet legal requirements and standards. With Stark you can show—not just tell—your team, partners and stakeholders how accessible your product is. A picture always says more than 1,000 words.
    Starting Price: $60 per year
  • 8
    ARC Toolkit
    Automated scanning is an important part of your digital accessibility journey. ARC Toolkit is a free browser plug-in that performs automated scans. 1. ARC Toolkit scans a single page at a time on your website. 2. After the scan, ARC Toolkit lists the accessibility errors found on that page by topic or page element. 3. Accessibility errors can be copied into bug tracking software. ARC Toolkit uses the same rules engine as ARC Monitoring, a part of the Accessibility Resource Center.
    Starting Price: $0
  • 9
    All in One Accessibility

    All in One Accessibility

    Skynet Technologies USA LLC

    All in One Accessibility is an AI-powered website accessibility solution for WCAG 2.2 and ADA compliance. It offers 70 plus features including a screen reader, virtual keyboard, accessibility profiles, sign language Libras (Brazilian Portuguese), multi-language (supports 140+ languages), etc. Additionally, All in One Accessibility provides the Color Contrast Checker and the Accessibility Checker, which identify web accessibility issues, ensuring websites meet accessibility standards.
    Starting Price: $25 Per Month
  • 10
    Evinced

    Evinced

    Evinced

    Enterprise grade digital accessibility platform for modern software development teams. Weave accessibility into all facets of software development - Design, development, automated testing, QA testing, and production monitoring. Large enterprises are making Evinced their platform of choice for accessibility engineering operations. Evinced helps them automatically detect issues, fix the issues and collaborate on accessibility. Browser extensions, SDKs for integration with automated tests, and scanning solutions for pre-production and production environments. Accessibility debugger browser extension, SDK/CLI for pre-commit checks. SDK for integration with automated tests, Scanning for on-premises dev/QA environments. User flow analyzer browser extension. SaaS to scan entire websites/web applications including SPAs, and behind-login. iOS SDK + Desktop Client to automatically discover accessibility issues in iOS apps.
  • 11
    Test Evolve

    Test Evolve

    Test Evolve

    Test Evolve is a powerful reporting solution designed to give product owners and senior management access to detailed information on the real-time performance of their products. Test Evolve allows users to customize up to 8 different dashboards, providing an at-a-glance summary of the operation's performance. Users can easily switch between different levels of detail as needed, and quickly drilling down into important insights regarding test failure. At the runtime view, all failing tests are highlighted and provide direct links to investigate further with full stack traces and additional failure details. Streamline the bug diagnosis process with Test Evolve and make sure that time-critical issues don't slip through the cracks.
    Starting Price: $79 per month
  • 12
    QualiBooth

    QualiBooth

    QualiBooth

    QualiBooth is a comprehensive web accessibility solution, offering features designed to streamline compliance with ADA, WCAG, and the European Accessibility Act standards. Its automated accessibility checker swiftly identifies barriers for users with disabilities, while real-time dashboards provide detailed insights into accessibility metrics. The development assistant offers actionable guidance for issue resolution, and continuous monitoring ensures ongoing compliance. QualiBooth empowers organizations to improve website accessibility and foster inclusivity by providing comprehensive insights, actionable recommendations, and continuous monitoring capabilities.
    Starting Price: €59/month
  • 13
    ContextQA

    ContextQA

    ContextQA

    ContextQA is a groundbreaking product that empowers organizations to enhance their automation test coverage, elevate software quality, expedite product delivery, and significantly curtail expenses related to maintaining software quality through the utilization of AI-driven SaaS solutions. AI agents will transform your manual test cases and user stories into automated test cases. ContextQA collects evidence and performs root-cause analysis while reporting a bug. ContextQA identifies critical user paths and pinpoints gaps in the software testing process. Complete end-to-end testing, including contract testing, eliminates the need for separate front-end and back-end testing tools. Test and identify glitches, enhance performance, and guarantee seamless user experiences on a plethora of browsers, mobile devices, and OS. ContextQA simplifies the process of incorporating test cases with minimal effort, enabling rapid expansion of automation coverage for your products and services.
  • 14
    Stellar

    Stellar

    Vstellar

    Speed up your testing processes with Stellar’s low-code automation platform. Enhance efficiency, minimize errors, and achieve smarter software testing with effortless solutions for UI, API, mobile, performance, and accessibility testing. Empower your team to test more and stress less with effortless integration and advanced analytics.
  • 15
    Accessi.org

    Accessi.org

    Accessi.org

    Check your website for accessibility issues and gain a detailed report about your website accessibility issues in seconds. Run a web accessibility test to see if your website is accessible to people with disabilities. To be accessible, your site must be compliant with the Web Content Accessibility Guidelines (WCAG) 2.1- the international gold standard for making a website accessible to people with disabilities. With Accessi.org, you don’t have to be an accessibility expert to become accessible for people with disabilities. Enter your website URL to perform a website accessibility test against WCAG and discover your accessibility requirements.
  • Previous
  • You're on page 1
  • Next