Best Free Web Accessibility Testing Tools of 2026

All in One Accessibility provides a holistic approach to ensuring that websites comply with global accessibility regulations such as WCAG 2.1, 2.2, ADA, EAA/EN 301 549, Section 508, AODA, ACA, Australian DDA, UK Equality Act, GIGW 3.0, RPD Act, German RGAA, BITV, LBI 13.146/2015, UNE 139803:2012, IS 5568, and more. Its user-friendly dashboard features a swift automated accessibility assessment tool. With an extensive array of over 90 accessibility functionalities, including speech recognition and input, text enlargement, keyboard navigation, screen reader compatibility, content clarity improvements, voice search, and beyond, it accommodates a wide range of users. Supporting over 190 languages, it appeals to a global audience. All in One Accessibility is ideal for businesses of all sizes, from large enterprises to government organizations, as it fosters inclusive, user-friendly digital environments and ensures compliance, all through a single, streamlined platform. It also adheres to various privacy and security standards, including GDPR, HIPAA, CCPA, SOC Type 2, ISO 9001:2015, and ISO 27001:2022.

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.

Sitejar checks a site for accessibility, privacy, security, SEO, technical quality and deceptive design issues in a single scan. Every finding points to the standard behind it (WCAG, OWASP and others) and explains the fix at code level. There's a Free plan for 1 site with 5 pages per scan, and paid plans from $29 a month for more pages, more sites, PDF reports, an accessibility statement builder, a VPAT/ACR draft and exports. Developers get the API, a CI gate and an MCP server on every plan. Sitejar helps teams find and fix problems; it doesn't certify compliance.

vStellar is an all-in-one automated software testing platform designed to accelerate QA processes through a low-code framework that eliminates repetitive manual testing. With comprehensive support for UI, API, mobile, performance, and accessibility testing, it provides a unified solution for complex testing environments. The platform integrates directly with IntelliJ IDEA, allowing users to install a lightweight plugin and begin creating and executing test cases instantly. Teams can define locators, endpoints, and execution parameters visually, then run unlimited test cases with advanced parallelization. Built-in reporting dashboards offer real-time visibility into test results and system performance, while CI/CD integration ensures continuous quality validation during deployments. vStellar’s flexibility supports diverse environments and browsers, enabling consistent validation across platforms and devices. Companies leverage it to reduce QA effort, accelerate release cycles, and enhance overall reliability. With its combination of ease of use and technical depth, vStellar redefines how teams automate testing at scale.

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

AllyProof is a comprehensive platform designed for web accessibility testing and monitoring, catering to developers, consultants, agencies, and teams responsible for managing business or client websites. It evaluates web pages for WCAG 2.2 A/AA compliance issues by utilizing tools such as axe-core, HTML_CodeSniffer, and APCA, providing insights into severity levels, relevant criteria, and evidence to support remediation efforts. Featuring a Chrome extension, users can perform local axe-core checks while easily identifying affected elements on their pages. The cloud scanning capability allows for in-depth site crawls, preserving findings and scan history for future reference, scheduled rechecks, team collaboration, and detailed reporting. Those who opt for paid plans can benefit from AI-generated fix suggestions, access through API and CLI, integration with CI/CD workflows, Jira compatibility, and drafts based on VPAT evidence. The free tier permits the monitoring of a single site with monthly rechecks, while the Business plan enhances this with weekly monitoring and a 14-day trial that requires a payment method, initiating billing after the trial period unless cancelled. Additionally, a public MCP server allows compatible clients to conduct their own scans. It's important to note that while automated findings are useful, they do not confirm WCAG compliance and should not replace thorough manual evaluations, ensuring a comprehensive approach to web accessibility. This multifaceted offering is geared towards empowering teams to create more accessible web experiences.

In today’s fast-paced digital world, small businesses often face significant challenges in gaining visibility on Google and other local search platforms. This limited visibility can prevent these businesses from connecting with potential customers precisely when they're needed most. At Local Siren, we specialize in enhancing your business's online presence to not only make you visible but also ensure you stand out in local search results. Our expertise allows you to concentrate on your core activities—serving your customers and expanding your business—while we handle the intricacies of local SEO. Let us help you engage with your community and ensure your services are prominently displayed where it matters most. Partner with Local Siren and make your mark in the local marketplace.

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.

Auditzy simplifies the reporting process, allowing users to generate insights with just a few clicks, in contrast to other page speed tools that often require extensive configuration and ongoing monitoring. This platform equips businesses with a comprehensive understanding of their website's performance, accessibility, and Technical SEO across various technical metrics, ultimately aiming to foster a more engaging experience for visitors. The assessments provided by Auditzy reveal potential enhancements for your web application’s performance. Users can access a complimentary web page speed test through an intuitive graphical interface, which delivers a detailed performance analysis. By leveraging Auditzy, organizations receive valuable insights and actionable recommendations to improve their performance metrics framed in business-friendly terms. Furthermore, the insights extend beyond individual websites, enabling users to conduct competitive analyses and strategize more effectively against their rivals. Auditzy™ also facilitates comparative assessments across different portfolios, allowing businesses to pinpoint and address their weaknesses. This multifaceted approach ensures that users can not only enhance their own websites but also stay ahead in the competitive landscape.

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.

A11yInspect is a user-friendly accessibility testing tool that helps developers and accessibility professionals quickly identify and resolve accessibility issues on websites. With support for both Chrome and Edge, the extension provides an exhaustive set of accessibility rules, offering accurate results with minimal false positives. The tool categorizes findings by WCAG conformance levels and highlights specific lines of code to make fixing issues more efficient. A11yInspect also features an in-built color contrast checker and a detailed CSS overview, allowing users to analyze and correct color combinations for better accessibility. The tool's intuitive interface and real-time scanning make it a valuable asset for improving web accessibility.

AUDITSU offers a comprehensive accessibility evaluation for mobile applications that adheres to the standards set by the European Accessibility Act (EAA), delivering an actionable plan in a matter of minutes. Its state-of-the-art automated risk detection system assesses compliance with WCAG 2.1 AA and EN 301 549, quantifying potential legal risks and displaying findings through a user-friendly dashboard that highlights your Accessibility Score and Compliance Coverage. The platform emphasizes both critical and noncritical issues based on their business impact, allowing you to prioritize fixes without getting lost in technical complexities. Additionally, it provides ongoing monitoring to ensure that your app remains compliant as updates are made, sending real-time notifications when any changes could impact accessibility. Furthermore, with a compliance guarantee included, your initial audit is free if no significant problems are identified, and the intuitive interface requires no specialized knowledge, making it easy to ensure EAA compliance. AUDITSU ultimately empowers developers to create more inclusive mobile experiences while simplifying the compliance process.

Accesstive is reshaping digital accessibility by providing an end-to-end platform that combines automation, expert compliance support, and human-first design. Businesses can rely on its Access Assistant widget with 35+ features to make websites more navigable through text-to-speech, reading guides, color contrast, and font adjustment tools. The platform also offers AI-driven audits, real-time monitoring, and automated remediation to identify and fix accessibility gaps instantly. With ongoing compliance support, Accesstive ensures organizations remain aligned with WCAG, ADA, Section 508, and other international regulations. Its live audits and weekly reports keep development teams informed, making it a cost-effective alternative to hiring in-house accessibility specialists. Beyond technology, Accesstive emphasizes community empowerment by working closely with people with disabilities to ensure authentic inclusivity. Businesses using the platform gain both reduced legal exposure and improved digital experiences for all users. Rated highly on G2 and Trustpilot, Accesstive has become a trusted solution for developers and enterprises aiming to deliver accessible digital experiences at scale.

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.

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.

Evaluate your website for potential accessibility challenges and receive a comprehensive report on these issues in just moments. Conduct a web accessibility assessment to determine if your site is usable by individuals with disabilities. Adhering to the Web Content Accessibility Guidelines (WCAG) 2.1 is essential for making your site accessible, as it represents the global benchmark for website accessibility. With Accessi.org, you can improve your website's accessibility without needing extensive expertise in the field. Simply input your website URL to initiate a test against the WCAG standards and uncover the specific accessibility needs your site must meet for inclusivity. Ensuring that your website is user-friendly for everyone is not just a recommendation but a responsibility.

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.

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.