How to Choose the Right Web Accessibility Solution

# How to Choose the Right Web Accessibility Solution

The web accessibility market has grown rapidly over the past several years, fueled by increasing legal requirements, growing awareness, and genuine desire from businesses to be more inclusive. With that growth comes a dizzying array of options: overlays, widgets, automated scanners, manual audit firms, remediation platforms, and hybrid solutions.

Choosing the wrong tool can waste your budget, give you false confidence, and even increase your legal risk. This guide breaks down the different types of accessibility solutions, what to look for in each, the red flags that signal trouble, and why the combination of AI-powered automation and manual expert testing delivers the best results.

Types of Accessibility Solutions

Accessibility Overlays and Widgets

Overlays are JavaScript-based tools that add a toolbar or widget to your website. They typically offer features like text resizing, contrast adjustment, font changes, and reading aids. Some claim to use AI to automatically fix accessibility issues in real time.

How they work: A single line of JavaScript is added to your site. The overlay modifies the visual presentation for users who activate it through the widget icon.

What they do well:

• Quick to install (minutes, not weeks)
• Provide some user-facing customization options
• Can address a narrow set of visual preferences

Where they fall short:

• They do not fix the underlying code. Screen readers and other assistive technologies interact with your site's HTML, not the overlay's visual modifications.
• Independent research has consistently shown that overlays fail to fix the majority of WCAG violations. A 2023 study by the University of Swansea found that leading overlay products addressed fewer than 30% of detected accessibility issues.
• The disability community has overwhelmingly spoken against overlays, with the Overlay Fact Sheet (signed by hundreds of accessibility professionals) documenting their shortcomings.
• Courts have ruled that overlays do not constitute adequate remediation. Businesses using overlays have been successfully sued despite having them installed.

Read our detailed analysis of the overlay debate.

Automated Scanning and Monitoring Tools

Automated accessibility testing tools crawl your website and test each page against WCAG success criteria. They flag violations, provide descriptions of each issue, and typically assign severity ratings.

How they work: A crawler visits your pages (either on-demand or on a schedule) and runs a series of checks against the DOM, CSS, and ARIA attributes.

What they do well:

• Scale to thousands of pages efficiently
• Catch pattern-based issues consistently (missing alt text, low contrast, missing labels)
• Provide ongoing monitoring to catch regressions
• Generate reports useful for development teams

Where they fall short:

• Automated tools can only detect approximately 30-40% of WCAG success criteria. Many criteria require human judgment (is this alt text actually descriptive? Is this heading structure logical? Is this error message helpful?).
• False positives are common, which can waste developer time.
• Dynamic content (single-page apps, modals, interactive widgets) can be difficult for crawlers to test.

Manual Audits and Expert Testing

Manual accessibility audits involve trained accessibility professionals reviewing your website by hand, using assistive technologies like screen readers, keyboard navigation, and magnification tools.

How they work: An expert tester systematically evaluates your site against WCAG success criteria, tests with multiple assistive technologies, and documents every issue with detailed findings and remediation recommendations.

What they do well:

• Evaluate the full range of WCAG criteria, including those that require human judgment
• Test the actual user experience, not just code compliance
• Identify issues that automated tools cannot detect
• Provide contextual remediation guidance specific to your technology stack

Where they fall short:

• Time-consuming and expensive (a full audit of a medium-sized site can take 40-80 hours)
• Point-in-time: the audit reflects your site as it was on the testing date. Changes made afterward are not evaluated.
• Quality varies significantly between audit firms and individual testers

Code-Level Remediation Platforms

Remediation platforms combine scanning with guided fixes, helping developers address issues directly in their codebase. Some integrate into development workflows (CI/CD pipelines, code editors, design tools) to prevent issues from being introduced in the first place.

How they work: The platform identifies issues through automated scanning, then provides specific code-level recommendations (often with copy-paste snippets) that developers can implement. Some platforms track issues through resolution and verify fixes.

What they do well:

• Address root causes rather than symptoms
• Integrate into existing development workflows
• Scale fix verification across the site
• Help teams learn accessibility best practices through contextual guidance

Where they fall short:

• Still limited by the scope of automated detection
• Require developer involvement (not a hands-off solution)
• May not cover content issues (poor alt text, unclear language)

What to Look for in an Accessibility Solution

Regardless of which type of solution you evaluate, here are the criteria that matter most:

1. WCAG Version and Conformance Level

Ensure the tool tests against WCAG 2.2 (or at minimum, WCAG 2.1) at Level AA. Some older tools still test against WCAG 2.0, which misses important criteria introduced in newer versions. Ask specifically whether the tool covers the new WCAG 2.2 success criteria (focus appearance, target size, dragging movements, accessible authentication, redundant entry).

2. Combination of Automated and Manual Testing

No automated tool alone can verify full WCAG conformance. The best solutions combine automated scanning for scale with manual expert testing for depth. If a vendor claims their automated tool provides "full WCAG compliance," treat that as a red flag.

3. Actionable Remediation Guidance

Identifying issues is only half the battle. Your team needs to know how to fix them. Look for solutions that provide:

• Specific code examples for each issue
• Priority rankings based on user impact and legal risk
• Clear explanations of why each issue matters
• Links to relevant WCAG success criteria

4. Ongoing Monitoring

Accessibility is not a one-time project. Every new page, content update, feature release, or third-party integration can introduce new barriers. Choose a solution that provides continuous monitoring and alerts you to new issues.

5. Compliance Documentation

Legal protection requires documentation. Your solution should generate reports that demonstrate your compliance status, track your remediation progress over time, and produce formal documents like VPATs (Voluntary Product Accessibility Templates) and Accessibility Conformance Reports (ACRs).

6. Transparent Methodology

Be wary of black-box solutions that do not explain how they work. A trustworthy vendor will clearly describe their testing methodology, what percentage of WCAG criteria their automated tools cover, and what requires manual evaluation.

Red Flags to Watch For

When evaluating accessibility solutions, these warning signs suggest a product may not deliver genuine compliance:

• "One line of code and you're compliant": Real accessibility requires code-level changes. No single script can make a non-compliant site compliant.
• "100% automated WCAG compliance": Automated tools can only test a subset of WCAG criteria. Any vendor claiming full automated compliance is either misinformed or misleading.
• "Guaranteed lawsuit protection": No product can guarantee you will not be sued. Companies using overlay products have been sued successfully. Genuine compliance, demonstrated through documentation and ongoing effort, is the best protection.
• No mention of manual testing: If the vendor never discusses manual testing, expert review, or assistive technology testing, their solution is incomplete.
• Hiding behind AI claims: While machine learning can enhance accessibility testing, it cannot replace human judgment for many WCAG criteria. Be skeptical of vague AI promises without specific capabilities.
• No client references or case studies: Reputable vendors can point to real clients and measurable outcomes. If a vendor cannot share any references, proceed with caution.
• Pressure to buy before auditing: A trustworthy vendor encourages you to understand your current state before committing. High-pressure sales tactics often indicate a product that does not withstand scrutiny.

Why AI Plus Manual Testing Matters

The most effective accessibility strategy uses AI and automation where they excel, while relying on human expertise where machines fall short:

What AI and automation do best:

• Scan thousands of pages quickly and consistently
• Detect pattern-based violations (missing alt attributes, insufficient contrast ratios, missing form labels)
• Monitor continuously for regressions
• Prioritize issues by frequency and severity
• Generate baseline reports and track progress

What human experts do best:

• Evaluate whether alt text is actually meaningful and descriptive
• Assess whether content structure makes logical sense
• Test complex interactions with real assistive technologies
• Identify cognitive accessibility barriers (confusing language, unclear instructions)
• Evaluate the holistic user experience, not just individual technical criteria

Neither approach alone is sufficient. Automated tools miss 60-70% of WCAG criteria. Manual audits are point-in-time and cannot scale to continuous monitoring. The combination of both, working together, delivers the most complete and sustainable compliance.

Why the Right Approach Combines Multiple Methods

The most effective accessibility strategy layers multiple approaches:

1. Automated scanning catches the approximately 30-40% of issues that can be detected programmatically, across your entire site, on a continuous basis.
2. Expert manual testing evaluates the remaining criteria that require human judgment, focusing on the actual user experience with assistive technologies.
3. Code-level remediation fixes the root causes in your codebase, rather than papering over symptoms.
4. Developer training prevents new issues from being introduced, reducing the cost and effort of maintaining compliance over time.
5. Continuous monitoring catches regressions and new issues before they become complaints or lawsuits.

This layered approach is more effective, more sustainable, and ultimately more cost-efficient than relying on any single tool.

How Compliable Combines These Approaches

Compliable was built on the principle that genuine accessibility requires more than one tool. Our platform integrates:

• Automated monitoring through Ally, our continuous scanning platform that tests against WCAG 2.2 Level AA and alerts you to new issues in real time
• Expert manual audits conducted by certified accessibility professionals who test with real assistive technologies
• Prioritized remediation plans with code-level guidance, severity ratings, and user-impact analysis
• Compliance documentation including VPATs, ACRs, and progress reports for legal and procurement purposes
• Ongoing support to help your team build accessibility into their daily workflows

We believe that combining automated efficiency with human expertise is the only way to achieve and maintain genuine accessibility compliance.

Conclusion

Choosing the right accessibility solution is a consequential decision. The wrong choice wastes money and leaves you vulnerable. The right choice protects your business, serves all your users, and builds lasting compliance.

Look for solutions that combine automated scanning with manual expertise, provide actionable code-level guidance, offer continuous monitoring, and generate proper compliance documentation. Be skeptical of quick fixes and too-good-to-be-true promises.

Ready to see what genuine accessibility compliance looks like? Start your free audit with Compliable and experience the difference a comprehensive approach makes.