List of the Top 20 Free Web Accessibility Testing Tools in 2025

UserWay stands at the forefront of AI-driven web accessibility solutions aimed at eliminating barriers that hinder digital inclusivity. Each day, their range of accessibility tools aids over 60 million individuals with disabilities, ensuring that all digital interactions are user-friendly and accessible to everyone. By merging extensive knowledge in legal matters, accessibility standards, and technical development, UserWay’s compliance products ensure ongoing conformity with regulations like WCAG 2.2, ADA, EN 301-549, and Section 508. In addition to their innovative Accessibility Widget, UserWay offers an Accessibility Plugin that seamlessly integrates accessibility features into popular platforms such as Shopify, Wix, and WordPress. Their advanced Accessibility Scanner identifies violations automatically, while Accessibility Audits facilitate real-time remediation. With a commitment to inclusivity and compliance, UserWay has garnered the trust of millions who rely on their solutions for enhancing digital accessibility. Explore the reasons behind their widespread recognition and discover how they can transform your digital presence.

CSS HTML Validator is a robust, user-friendly web development tool available for Windows, Mac, and Linux, designed to swiftly and effectively validate HTML/HTML5, CSS, accessibility, SEO, PHP, XHTML, JavaScript, links, htmx, and more. This tool not only provides invaluable and customizable recommendations but also warns users about outdated or proprietary tags, attributes, and CSS elements. Ensuring that your website is free of broken links and other issues resulting from poorly constructed HTML and CSS is essential to retaining visitors. The latest iteration of CSS HTML Validator boasts enhanced support for HTML and CSS, improved accessibility checks, htmx compatibility, new color schemes for editors, and various other enhancements. Additionally, the Pro edition features a Batch Wizard that allows users to validate entire websites and multiple HTML documents simultaneously, generating a comprehensive validation report in HTML format. You can explore CSS HTML Validator Pro for Windows at no cost for either 200 validations or a duration of 30 days, whichever occurs first, while a limited free version of htmlval is also accessible for Mac and Linux users. Overall, this tool serves as a crucial asset for web professionals aiming to improve their site's quality and performance.

Global organizations depend significantly on their websites, and Sitemorse identifies essential areas that can help reduce risks related to legal issues, damage to reputation, poor online user experiences, and unintentional discrimination. We deliver insights regarding the quality of your website, ensuring compliance with various standards, laws, and guidelines. Instead of settling for cursory evaluations of your site's effectiveness, we provide you with a well-informed second opinion. Our clear, prioritized action plans allow you to address problems swiftly, complemented by concise instructional videos for better understanding. Numerous organizations find it challenging to manage their digital presence effectively and frequently miss the critical issues presented by the current digital landscape. This gap often stems from human limitations, as it is unrealistic to perform exhaustive content reviews manually on an individual page basis. The Sitemorse Intelligence Engine (SMIE™) automates content assessment, ensuring that rules and standards are consistently enforced while also confirming compliance with regulatory mandates. By taking advantage of our advanced technology, organizations can not only refine their digital strategies but also achieve greater compliance with minimal effort. Ultimately, embracing such innovations can lead to more robust online platforms that foster trust and engagement with users.

To ensure that organizations prioritize the creation of inclusive experiences, establishing an Accessibility Resource Center is crucial. TPGi's Accessibility Resource Center (ARC Platform) offers a comprehensive suite of accessibility tools and a centralized platform that supports your organization's continuous efforts in enhancing accessibility. The ARC is built around an automated scanning and monitoring tool designed to detect accessibility challenges. This allows you to scan and evaluate individual web pages, entire websites, and specific user pathways. Your team will also benefit from a vast library of accessibility articles found in ARC’s KnowledgeBase, which provides code-level solutions to prevalent accessibility problems. Moreover, to fill any knowledge gaps within your team, you can engage in tailor-made training courses or consult with a TPGi accessibility expert for more complex scenarios via HelpDesk. The features of the Accessibility Resource Center (ARC Platform) encompass: ARC Monitoring, ARC KnowledgeBase, ARC User Flows, ARC API, ARC Tutor, ARC HelpDesk, ARC Workspaces, and ARC Test Initiatives. By integrating these tools and resources, organizations can significantly advance their accessibility initiatives, fostering a more inclusive environment for all users.

EqualWeb performs an in-depth assessment of your website domain to pinpoint any obstacles that may hinder accessibility or jeopardize your organization's compliance status. This service is highly adaptable and can be easily integrated into your website—simply input your domain to initiate the evaluation. With an extensive database containing over 100,543,679 web pages from more than 50 content management systems, our platform is adept at improving accessibility. Additionally, it features over 1,000,000 rules designed for accessibility remediation. By employing sophisticated machine learning algorithms, we analyze the information to identify patterns and trends related to accessibility issues, which enables us to predict the remediation needs for new data effectively. Our detailed examination of your site allows us to apply accessibility rules customized to your specific code, content, and visual design. This automated system is built to tackle prevalent accessibility challenges, with the goal of raising your website's compliance level to an impressive 95%. To ensure thorough compliance with accessibility standards, our team of specialists, including those with disabilities, conducts a meticulous manual audit utilizing specialized reader software, leaving no detail unchecked in the drive for complete compliance. This comprehensive strategy not only guarantees that your website aligns with regulatory standards but also ensures it is welcoming and accessible to all users, thereby enhancing the overall user experience.

Every user should have equal access to your website. Tenon provides an array of tools, testing, and training aimed at improving accessibility throughout your organization. Are you searching for an automated solution for accessibility testing? Our API can effortlessly fit into your existing development workflow. Do you need to create an accessible website in a short timeframe? The Tenon team, comprised of testers, developers, and auditors, is ready to tackle accessibility obstacles swiftly. If you're looking for a sustainable long-term strategy for accessibility, Tenon is committed to helping your organization prioritize inclusive practices. We not only offer top-tier automated accessibility testing tools but also address a variety of accessibility challenges effectively. With numerous VPATs and audits completed, our extensive experience supports our expertise. Our quick remediation service can solve accessibility issues on your site while testing is ongoing. Furthermore, our developers are available to train your development team on creating accessible code and establishing the KPIs and processes necessary for an accessibility-focused organization. Tenon can ensure that your most recent pull request adheres to accessibility standards or provide weekly project monitoring with comprehensive email reports to keep you updated. Ultimately, our mission is to equip your organization with the necessary tools and knowledge to embed accessibility as a fundamental value. By partnering with Tenon, you can create a more inclusive digital environment for all users.

Stark is seamlessly integrated into your design and development tools, providing extensive assistance throughout every stage of the product lifecycle. It streamlines the creation and development of accessible products from the outset by supplying vital resources directly within your chosen design and development environments. With Stark, you can effortlessly adjust and refresh your current components to meet the latest accessibility standards. Designers, project managers, and engineers rely on Stark to evaluate UI components and code, ensuring adherence to accessibility laws and regulations. Additionally, Stark empowers you to visually showcase your product's accessibility to your team, partners, and stakeholders, highlighting that a visual illustration often communicates more effectively than words alone. By incorporating accessibility as a fundamental element of your product, Stark promotes a design philosophy that prioritizes inclusivity, encouraging collaboration among all team members. This integration not only enhances user experience but also strengthens the overall product quality.

Automated scanning plays a crucial role in enhancing your digital accessibility efforts, and the ARC Toolkit serves as a complimentary browser plug-in that facilitates this process. First, you can perform a scan on an individual page of your website. Next, you have the option to choose specific accessibility topics for review or to explore all available topics. After that, you can analyze the accessibility challenges categorized by topic, as well as by WCAG errors, alerts, and best practices relevant to each area. Alternatively, you can sort the accessibility issues based on page elements, allowing you to focus on those with numerous accessibility concerns. Additionally, you can easily transfer any identified errors into your bug tracking software for further management. Notably, the ARC Toolkit operates using the same rules engine as ARC Monitoring, which is a key component of the Accessibility Resource Center, ensuring consistency in your accessibility assessments. This integration allows for a streamlined approach to tackling accessibility challenges on your website.

Keep track of and evaluate your websites and documents to ensure they meet the standards of WCAG 2.1 and EN 301 549. Accessibility Cloud offers both automated and manual testing, monitoring, and compliance management within a singular, robust platform. Automated features allow you to identify errors, frequency, and the potential impact on users with disabilities while providing valuable in-context learning resources. You can easily scan documents to detect issues, highlight them, and access additional support. For manual evaluations, you can utilize the most extensive WCAG/EM testing suite available, which includes support for automated assistance, various guidelines, markdown formatting, in-context learning resources, and extensive import/export capabilities. Additionally, the monitoring capabilities enable you to invite team members and specify who receives notifications about accessibility issues, allowing Accessibility Cloud to handle everything else efficiently. As a result, your organization can stay proactive in addressing accessibility challenges and ensuring compliance.

All in One Accessibility is an advanced AI-driven solution that enhances website accessibility, ensuring compliance with WCAG 2.2 and ADA regulations. With over 70 features at its disposal, it includes tools like a screen reader, a virtual keyboard, customizable accessibility profiles, and support for sign language in Libras (Brazilian Portuguese), along with multi-language capabilities that cover more than 140 languages. The installation process is remarkably swift, taking just two minutes, which significantly mitigates the risk of facing costly and time-intensive accessibility lawsuits. Furthermore, the platform equips users with a Color Contrast Checker and an Accessibility Checker, both of which are essential for pinpointing web accessibility challenges, thereby guaranteeing adherence to established accessibility standards. This comprehensive toolset makes it easier for businesses to create inclusive digital environments and enhances the overall user experience for individuals with disabilities.

A comprehensive digital accessibility platform designed specifically for modern software development teams, Evinced integrates accessibility considerations at every phase of the software development lifecycle, from initial design to coding, automated testing, quality assurance, and final production oversight. This platform has become the go-to choice for numerous large organizations looking to effectively manage their accessibility engineering tasks. Evinced excels not only in pinpointing and addressing accessibility challenges but also in promoting teamwork among various departments. With features like browser extensions and SDKs that easily integrate with automated testing frameworks, in addition to scanning solutions applicable to both pre-production and live settings, it simplifies the entire accessibility workflow. The platform offers a dedicated accessibility debugger browser extension and an SDK/CLI that facilitates pre-commit checks, ensuring that issues are caught early in the development process. Moreover, it includes a user flow analyzer browser extension and a SaaS solution capable of scanning entire websites and web applications, including those that are single-page or require user login. To further enhance its offerings, Evinced provides an iOS SDK and a Desktop Client that automatically detects accessibility barriers in iOS applications, ensuring a holistic approach to digital accessibility across various platforms. By equipping development teams with this extensive array of tools, Evinced empowers them to prioritize and significantly improve accessibility seamlessly throughout their projects, ultimately fostering an inclusive digital environment for all users.

Auditzy streamlines the report generation process, requiring only a few clicks, which stands in stark contrast to the cumbersome setup and maintenance often associated with traditional page speed tools. This innovative platform enables businesses to thoroughly assess their website’s performance, accessibility, and Technical SEO metrics, ultimately improving the experience for users visiting their sites. The assessments provided by Auditzy reveal critical areas for enhancing the functionality of web applications. With a free webpage speed test presented through a user-friendly graphical interface, Auditzy produces comprehensive performance reports that are easy to understand. By leveraging Auditzy, users gain access to essential insights and practical recommendations concerning their performance metrics, expressed in straightforward language suitable for business contexts. Furthermore, Auditzy's capabilities extend beyond single websites, allowing for extensive competitive analysis that helps users strategically align themselves against competitors. This tool also aids in comparative analysis across multiple portfolios, providing businesses with the insights necessary to pinpoint and rectify their weaknesses effectively. By adopting this comprehensive strategy, companies not only drive improvement but also bolster their overall competitiveness in the ever-evolving digital marketplace. Ultimately, Auditzy empowers organizations to stay ahead by continuously refining their web performance and strategic positioning.

Test Evolve is a sophisticated reporting tool designed specifically for product managers and executive teams, providing them with thorough insights into the immediate performance of their products. The platform allows customization of up to eight unique dashboards, guaranteeing that a clear summary of operational metrics is consistently available. Users can easily switch between different levels of detail, facilitating swift access to essential information regarding test failures. In the live view, all failed tests are clearly highlighted, accompanied by direct links for further analysis, which includes detailed stack traces and pertinent information about each failure. Utilizing Test Evolve simplifies the process of identifying bugs, ensuring that critical issues are quickly resolved and do not go unnoticed. This robust tool not only boosts efficiency but also enables teams to uphold exceptional standards of quality assurance, ultimately fostering a culture of continuous improvement. By leveraging such features, organizations can make informed decisions that enhance both product quality and team collaboration.

QualiBooth presents a thorough solution aimed at enhancing web accessibility for all users. It encompasses a variety of features designed to facilitate adherence to ADA, WCAG standards, and the European Accessibility Act. The automated accessibility tool efficiently detects obstacles faced by individuals with disabilities. Users benefit from real-time dashboards that furnish in-depth analytics regarding accessibility performance. Additionally, the development assistant offers practical guidance for resolving issues, while ongoing monitoring guarantees sustained compliance. By employing QualiBooth, organizations can significantly enhance website accessibility, fostering an inclusive environment through detailed insights and proactive recommendations. This commitment not only helps meet regulatory requirements but also enriches the user experience for everyone.

ContextQA is a cutting-edge solution aimed at empowering organizations to enhance their automation testing processes, elevate software quality, speed up product release schedules, and significantly lower the expenses related to upholding software standards by utilizing AI-driven SaaS technology. By converting manual test cases and user narratives into automated tests, AI agents optimize the testing workflow. In addition, ContextQA collects evidence and performs root-cause analysis when issues arise, effectively pinpointing critical user experiences and revealing weaknesses in the software testing framework. With its thorough end-to-end testing capabilities, including contract tests, there is no longer a need for separate tools for testing the front end and back end, facilitating a more cohesive testing environment. This solution not only identifies problems and enhances performance but also guarantees seamless user experiences across different browsers, mobile devices, and operating systems. Moreover, ContextQA simplifies the integration of test cases, allowing for a rapid expansion of automation coverage for your products and services, ultimately driving increased productivity and operational efficiency. The innovative approach of ContextQA ensures that organizations stay competitive in a fast-paced technological landscape.

Enhance your testing processes with Stellar’s innovative low-code automation platform. Increase efficiency, minimize errors, and achieve smarter software testing with integrated solutions for UI, API, mobile, performance, and accessibility evaluations. Empower your team to perform additional tests with reduced pressure, all due to seamless integration and advanced analytical tools. By utilizing Stellar, you can revolutionize your testing strategy and discover unprecedented levels of productivity, leading to a more streamlined development cycle. Embrace this opportunity to elevate your software quality and team performance simultaneously.

Assess your website for potential accessibility issues and obtain a thorough report outlining any problems encountered. Perform a web accessibility evaluation to ascertain whether your site is navigable by people with disabilities. To qualify as accessible, a website must follow the Web Content Accessibility Guidelines (WCAG) 2.1, which serves as a global standard for accessibility measures. Using Accessi.org makes this evaluation straightforward, enabling individuals with varying levels of accessibility knowledge to create a more inclusive experience for users with disabilities. Simply enter your website's URL to initiate a WCAG compliance analysis and identify your site's specific accessibility requirements. This proactive strategy not only improves usability but also contributes to a more equitable online environment for every user. Furthermore, ensuring your website meets accessibility standards can also enhance your site's overall reputation and reach.

Web accessibility is essential to guarantee that individuals with disabilities can access the same information and services as the general population. ExcellentWebCheck serves as a valuable resource for organizations aiming to pinpoint and rectify accessibility barriers that may hinder disabled users from navigating a website effectively. By adhering to international standards, ExcellentWebCheck offers a straightforward method for enhancing website accessibility through comprehensive scanning and ongoing monitoring, ultimately fostering an inclusive online environment for all users. This ensures that digital spaces are welcoming and usable for everyone, regardless of their abilities.

Recite Me Accessibility Toolbar stands out as a widely-used solution compliant with WCAG and ADA standards. It empowers users to modify and personalize the appearance of websites according to their individual requirements. This tool is especially beneficial for individuals facing visual, cognitive, mobility, and various other impairments. Additionally, Recite Me provides a complimentary Accessibility Checker, allowing users to assess the accessibility of their website effectively. This tool helps identify particular accessibility challenges, enabling website owners to address these issues and enhance overall accessibility. By utilizing Recite Me, users can create a more inclusive digital environment for everyone.

Receive a complimentary assessment of your website to pinpoint accessibility challenges and obtain detailed guidance on how to address them. Ensuring your website meets accessibility standards is crucial, as it allows individuals with disabilities to navigate effectively. Accessible websites provide a secure and seamless experience for every visitor while also safeguarding you against potential legal repercussions. Our thorough accessibility evaluation will examine your website's code to uncover any accessibility concerns. By prioritizing compliance, you enhance user experience and demonstrate a commitment to inclusivity.