Best Free Web Accessibility Testing Tools of 2025

UserWay is a pioneer in AI-powered web accessibility technologies designed to dismantle digital accessibility barriers, Their suite of accessibility solutions assist over 60 million users with disabilities daily as they help to make every digital touchpoint intuitive and inclusive. By bringing a distinct blend of legal, accessibility, and technical expertise together, UserWay’s digital accessibility compliance products support continuous adherence to accessibility laws and guidelines, such as WCAG 2.2, ADA, EN 301-549, and Section 508. Beyond their state-of-the-art Accessibility Widget, UserWay's Accessibility Plugin adds accessibility into websites on platforms like Shopify, Wix, and WordPress with native integration. Their Accessibility Scanner automates violation detection and Accessibility Audits provide remediation in real-time. Find out why millions trust UserWay for their digital accessibility and compliance needs.

CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use professional web development tool that checks HTML/HTML5, CSS, accessibility, SEO, PHP, XHTML, JavaScript, links, htmx, and more. CSS HTML Validator will give you valuable and customizable advice while alerting you to obsolete, deprecated, and proprietary tags, attributes, and CSS. Make sure that your website visitors do not leave your site because they run into broken links or other problems caused by poorly written HTML and CSS. The latest version of CSS HTML Validator includes updated HTML & CSS support, improved accessibility checking, support for htmx, new editor color schemes, and other updates and improvements. A Batch Wizard in the Pro edition lets you easily validate entire websites and multiple HTML documents by generating a single validation report in HTML format. 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.

Organizations worldwide rely heavily on their websites, and Sitemorse pinpoints critical areas that can mitigate risks such as litigation, reputational harm, negative online experiences, and inadvertent discrimination. We provide insights into the quality of your website, ensuring that it meets various standards, rules, and regulations. Rather than accepting superficial assessments of your site's performance, let us offer you an informed second opinion. Our straightforward, prioritized to-do lists enable you to tackle issues promptly, supported by brief instructional videos for clarity. Many organizations struggle with effective digital management and often overlook the key challenges posed by today’s digital environment. This oversight is typically a result of human limitations, as it is impractical to continually review content manually on a page-by-page basis. The Sitemorse Intelligence Engine (SMIE™) automates this process, guaranteeing that content rules and standards are uniformly applied while also verifying adherence to regulatory requirements. By leveraging our technology, organizations can enhance their digital strategies and improve overall compliance with ease.

It’s important for any organization that is focused on creating accessible experiences to have an Accessibility Resource Center. TPGi’s Accessibility Resource Center (ARC Platform) will give your organization a central platform and suite of accessibility tools to help you on your ongoing accessibility journey. ARC is centered around an automated scanning and monitoring tool that helps identify accessibility issues. You can scan and test web pages, whole websites, and particular user flows. Your team can access a library of accessibility articles in ARC’s KnowledgeBase which provide code-level solutions to common accessibility issues. Additionally, you can address any knowledge gaps your team may have through individualized training courses or connect with a TPGi accessibility expert for more difficult use cases via HelpDesk. Accessibility Resource Center (ARC Platform) Features: ARC Monitoring; ARC KnowledgeBase; ARC User Flows; ARC API; ARC Tutor; ARC HelpDesk; ARC Workspaces; ARC Test Initiatives

EqualWeb conducts a thorough examination of your website domain to identify any potential barriers that could affect accessibility or pose a risk of non-compliance for your organization. The service is highly customizable and seamlessly integrates with your website—just enter your domain to begin the process. With a database featuring over 100,543,679 web pages across more than 50 content management systems, our platform is well-equipped to enhance accessibility. It also houses more than 1,000,000 rules for accessibility remediation. Utilizing advanced machine learning algorithms, we analyze the data to discover patterns and trends related to accessibility challenges, enabling us to forecast remediation requirements for fresh data. Our comprehensive analysis of your site allows us to implement accessibility rules tailored to your unique code, content, and aesthetic. This automated system is engineered to address common accessibility issues, aiming to elevate your website's compliance level to an impressive 95%. To ensure complete adherence to accessibility standards, our team of experts, including individuals with disabilities, conducts a detailed manual audit using specialized reader software, ensuring that no aspect is overlooked in the pursuit of full compliance. This thorough approach guarantees that your website not only meets regulatory requirements but is also user-friendly for all visitors.

All users ought to enjoy equal access to your website. Tenon offers tools, testing, and training to enhance accessibility across your organization. Are you in need of an automated accessibility testing solution? Our API seamlessly integrates into your development workflow. Do you require an accessible website quickly? Tenon's team of testers, developers, and auditors can swiftly address accessibility challenges. Looking for a long-term solution to accessibility issues? Tenon is dedicated to transforming your organization into one that prioritizes accessibility. Not only does Tenon provide the finest automated accessibility testing tools available, but we also tackle a wide range of accessibility challenges. With hundreds of VPATs and accessibility audits under our belt, we have the experience to back our claims. Our rapid remediation service resolves accessibility concerns on your website even as testing continues. Additionally, our developers can educate your development team on writing accessible code while aiding in defining the KPIs and processes essential for becoming an accessible organization. Tenon can guarantee that your latest pull request meets accessibility standards or monitor your project weekly, delivering detailed reports via email to keep you informed. Ultimately, our commitment is to empower your organization with the tools and knowledge necessary to maintain accessibility as a core principle.

Stark is integrated into your design and development software, offering comprehensive support throughout the entire product lifecycle. It simplifies the process of creating and developing accessible products from the beginning by equipping you with essential tools directly within your preferred design and development platforms. With Stark, you can easily modify and update your existing components to align with the latest accessibility standards. Designers, project managers, and engineers utilize Stark to assess UI elements and code, ensuring compliance with accessibility laws and regulations. Moreover, Stark enables you to visually demonstrate the accessibility of your product to your team, partners, and stakeholders, reinforcing the concept that a visual representation often conveys more than mere words can express. By making accessibility a tangible aspect of your product, Stark fosters a more inclusive approach to design.

Automated scanning is an important part of your digital accessibility journey and ARC Toolkit is a free, automated scanning tool that comes as a browser plug-in. 1. Scan a single page of your website. 2. Select which accessibility topics you want to examine or check out all of them. 3. Examine the accessibility issues by topic and by WCAG errors, alerts, and best practices within each topic. Or sort accessibility issues by page elements to examine elements with many accessibility problems. 4. Copy errors into bug tracking software. ARC Toolkit uses the same rules engine as ARC Monitoring, a part of the Accessibility Resource Center.

Monitor and test your websites and documents against WCAG 2.1 & EN 301 549. Accessibility Cloud provides automated and manual accessibility testing, monitoring, and compliance management all within one powerful platform. Automated: Find errors, occurrences, and impact on users with disabilities. Get in-context learning opportunities. Scan documents, highlight problems, and more. Manual: Manual accessibility tests can be performed with the industry's most comprehensive WCAG/EM testing suite. It supports automatically assisted tests as well as multiple guidelines, markdown, in context learning material, powerful import/export options, and many more. Monitoring: Invite your colleagues, determine who gets an email notification for which and let Accessibility Cloud take care of the rest. Accessibility Cloud will monitor your site and notify you when accessibility problems are found.

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. The solution takes 2 minutes to install and is designed to reduce the risk of time-consuming accessibility lawsuits. Additionally, All in One Accessibility provides the Color Contrast Checker and the Accessibility Checker, which identify web accessibility issues, ensuring websites meet accessibility standards.

An enterprise-level digital accessibility platform tailored for contemporary software development teams. It seamlessly integrates accessibility into every stage of the software development lifecycle, including design, coding, automated testing, quality assurance, and production oversight. Many large organizations have chosen Evinced as their preferred solution for managing accessibility engineering tasks. Evinced not only helps in identifying and resolving accessibility issues but also fosters collaboration among teams. With tools such as browser extensions and SDKs designed for integration with automated testing frameworks, along with scanning solutions for both pre-production and live environments, it streamlines the accessibility process. The platform includes a specialized accessibility debugger browser extension and an SDK/CLI for executing pre-commit checks. Furthermore, it offers a user flow analyzer browser extension and a SaaS solution that scans entire websites and web applications, including single-page applications and those requiring login. Additionally, Evinced provides an iOS SDK and a Desktop Client that automatically identifies accessibility challenges within iOS applications, ensuring a comprehensive approach to digital accessibility across all platforms. Overall, this robust suite of tools empowers development teams to prioritize and enhance accessibility effortlessly throughout their projects.

Auditzy simplifies the process of generating reports with just a few clicks, contrasting sharply with many traditional page speed tools that often demand extensive setup and ongoing management. This platform empowers businesses to gain a comprehensive understanding of their website's performance, accessibility, and Technical SEO insights across various technical parameters, ultimately enhancing the user experience for site visitors. The evaluations conducted by Auditzy unveil opportunities to optimize the efficiency of your web applications. Offering a free web page speed test through an intuitive and easily navigable graphical interface, Auditzy delivers high-quality performance reports that are straightforward to interpret. By utilizing Auditzy, users receive valuable insights and actionable recommendations related to their performance metrics, articulated in business-friendly language. Moreover, Auditzy's insights extend beyond individual websites; it enables users to conduct in-depth competitive analyses, allowing them to strategically position themselves against rivals. Additionally, Auditzy™ facilitates comparative analysis across different portfolios, equipping businesses with the knowledge needed to identify and address their weaknesses effectively. This holistic approach not only fosters improvement but also enhances overall competitiveness in the digital landscape.

Test Evolve serves as an advanced reporting tool tailored for product owners and upper management, offering them in-depth insights into the real-time effectiveness of their products. With the ability to personalize up to eight distinct dashboards, Test Evolve ensures a concise overview of operational performance is always at hand. Users can effortlessly navigate through varying levels of detail, allowing for quick access to critical insights related to test failures. In the real-time view, all tests that fail are prominently displayed, complete with direct links for further investigation, including comprehensive stack traces and additional details about each failure. By leveraging Test Evolve, the process of diagnosing bugs is streamlined, ensuring that urgent issues are promptly addressed and do not go unnoticed. This powerful solution not only enhances productivity but also empowers teams to maintain high standards of quality assurance.

QualiBooth offers a comprehensive solution for web accessibility. It includes features that streamline compliance with ADA and WCAG standards, as well as the European Accessibility Act. Its automated accessibility tool identifies barriers quickly for users with disabilities. Real-time dashboards offer detailed insights into accessibility metrics. The development assistant provides actionable advice for problem resolution and continuous monitoring ensures compliance. QualiBooth helps organizations improve accessibility and promote inclusivity on their websites by providing comprehensive insights and recommendations, as well as continuous monitoring capabilities.

ContextQA is an innovative solution designed to help organizations boost their automation testing capabilities, improve software quality, accelerate product release timelines, and significantly reduce costs associated with maintaining software standards by leveraging AI-powered SaaS technology. By transforming manual test cases and user stories into automated tests, AI agents streamline the testing process. Additionally, ContextQA gathers evidence and conducts root-cause analysis when bugs are detected. It identifies key user journeys and highlights deficiencies in the software testing framework. With comprehensive end-to-end testing, including contract testing, there is no longer a necessity for distinct tools for front-end and back-end testing. It allows for the identification of issues, performance improvements, and ensures smooth user interactions across various browsers, mobile devices, and operating systems. Furthermore, ContextQA makes it easier to integrate test cases with minimal effort, facilitating a swift increase in automation coverage for your products and services while ultimately enhancing productivity and efficiency.

Accelerate your testing workflows using Stellar’s low-code automation platform. Boost productivity, reduce mistakes, and attain more intelligent software testing through seamless solutions for UI, API, mobile, performance, and accessibility assessments. Enable your team to conduct more tests while experiencing less stress, thanks to easy integration and sophisticated analytics tools. With Stellar, you can transform your testing approach and unlock new levels of efficiency.

Evaluate your website for accessibility concerns and quickly receive a comprehensive report detailing any issues. Conduct a web accessibility assessment to determine if your site is usable by individuals with disabilities. For a website to be deemed accessible, it needs to adhere to the Web Content Accessibility Guidelines (WCAG) 2.1, which is recognized globally as the benchmark for ensuring accessibility. Utilizing Accessi.org simplifies this process, allowing anyone, regardless of their expertise in accessibility, to make their website friendly for users with disabilities. Simply input your website's URL to execute a WCAG compliance test and uncover the specific accessibility needs of your site. This proactive approach not only enhances usability but also fosters an inclusive online environment for all users.

Websites must be accessible to ensure that people with disabilities have access to the same information and services as everyone else. ExcellentWebCheck is a platform that helps organizations identify and resolve accessibility issues that could prevent disabled users from using a site. ExcellentWebCheck is a simple solution to improve website accessibility by scanning and monitoring websites according to international guidelines.

Recite Me Accessibility Toolbar, one of the most popular WCAG & ADA Compliant Toolbars. Users can customize and alter the design of your website to suit their needs. Perfect for users with visual, cognitive, and mobility impairments in addition to other disabilities. Recite Me also offers a free Accessibility Checker that can be used to measure the accessibility of your website. You can detect specific accessibility issues on your website, fix them and improve its accessibility.

Get a free scan of your website to identify accessibility issues and get specific instructions on how you can fix them. Why is it important to ensure your website is compliant? Websites must be accessible to people with disabilities. Compliant websites not only guarantee a safe and efficient experience for all users but also protect you from liability. Our accessibility audit will scan your website's code to find accessibility issues.