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Head-to-head · Website Accessibility Tools

Axe DevTools vs Siteimprove Accessibility

  • Updated Nov 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Axe DevTools #5 in Website Accessibility Tools 8.7/10 Free plan Free plan✓ 3 of 4 features Visit Axe DevTools
Siteimprove Accessibility #8 in Website Accessibility Tools 8.4/10 Pricing on request ✓ 4 of 4 features Visit Siteimprove

Axe DevTools leads on 1 check, Siteimprove Accessibility on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAxe DevTools · 8.7/10
  • Free planonly Axe DevTools
  • Most featuresSiteimprove Accessibility · 4 of 4

Axe DevTools scores higher on our rubric for website accessibility tools: 8.7 against 8.4 out of 10; our editors rank them #5 and #8.

Axe DevTools offers free plan; Siteimprove Accessibility doesn't. On scan scope, Siteimprove Accessibility gives you Site where Axe DevTools offers Page.

Axe DevTools is the better fit for developers wanting a free web testing toolkit. Siteimprove Accessibility is the better fit for mature teams managing sites and PDFs.

  • Axe DevTools fits best

    Developers wanting a free web testing toolkit

  • Siteimprove Accessibility fits best

    Mature teams managing sites and PDFs

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Axe DevTools 8.7/10 Visit ↗ Siteimprove Accessibility 8.4/10 Visit ↗
At a glance
Editor score 8.7 8.4
Ranking #5 in Website Accessibility Tools #8 in Website Accessibility Tools
Best for Developers wanting a free web testing toolkit Mature teams managing sites and PDFs
Pricing model Free plan + paid Paid
Starting price — Pricing on request
Free plan ✓ (best) —
Free trial — —
Deployment Cloud, Self-hosted, Browser extension Cloud, Browser extension
Platforms Web, Chrome extension Web, Chrome extension
Support Docs Docs
Compliance SSO/SAML ISO 27001, GDPR
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Axe DevTools 3/4 · Siteimprove Accessibility 4/4
Scheduled scans Not checked yet ✓ (best)
Browser extension ✓ ✓
CI/CD integration ✓ ✓
API access ✓ ✓
Specs
WCAG version Wcag 2.2 Wcag 2.2
Scan scope Page Site
Scan limit Not checked yet Not checked yet
Our review
Pros
  • Free extension provides page-by-page Axe-core accessibility testing
  • Supports full-page, component, guided, and user-flow testing
  • Integrates with Jira, CI/CD tools, APIs, and developer frameworks
  • Scans websites and PDFs, with WCAG issue prioritization by severity
  • Extends testing to dynamic, protected, and non-public pages
  • Connects accessibility checks to CMS, development, and CI/CD workflows
Cons
  • Coverage centers on web pages rather than mobile testing
  • Site monitoring is outside its primary coverage
  • Advanced capabilities are concentrated in Pro and Bundle tiers
  • Pricing is customized and requires contacting Siteimprove
  • Its broad scope may exceed the needs of teams wanting basic scans only
  • Several workflow options require integrations, extensions, or development tools
Our verdict

Axe DevTools is an accessibility testing product for web development teams, QA and automation engineers, agencies, and development leaders. It combines automated scans with guided testing in a browser, covering full pages, partial pages,…

Read the review →

Siteimprove Accessibility is a SaaS platform for organizations managing websites, documents, applications, and other digital content. It scans websites and PDFs for accessibility issues, organizes findings by WCAG standard and severity,…

Read the review →
  1. Axe DevToolsWebsite Accessibility Tools 8.7Free plan
  2. Siteimprove AccessibilityWebsite Accessibility Tools 8.4Pricing on request

Strengths and trade-offs

  • Axe DevTools — where it wins

    • Free extension provides page-by-page Axe-core accessibility testing
    • Supports full-page, component, guided, and user-flow testing
    • Integrates with Jira, CI/CD tools, APIs, and developer frameworks

    Where it doesn't

    • Coverage centers on web pages rather than mobile testing
    • Site monitoring is outside its primary coverage
    • Advanced capabilities are concentrated in Pro and Bundle tiers

  • Siteimprove Accessibility — where it wins

    • Scans websites and PDFs, with WCAG issue prioritization by severity
    • Extends testing to dynamic, protected, and non-public pages
    • Connects accessibility checks to CMS, development, and CI/CD workflows

    Where it doesn't

    • Pricing is customized and requires contacting Siteimprove
    • Its broad scope may exceed the needs of teams wanting basic scans only
    • Several workflow options require integrations, extensions, or development tools
  • Axe DevTools8.7/10 · Free plan

    A free web testing toolkit with guided checks, CI/CD workflows, APIs, and developer integrations.

    Visit Axe DevToolsFull verdict →
  • Siteimprove Accessibility8.4/10 · Pricing on request

    A mature platform for scanning, prioritizing, and improving website and PDF accessibility.

    Visit SiteimproveFull verdict →

More comparisons

All website accessibility tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update