AlleviatorAlleviator vs Siteimprove
Siteimprove is an enterprise platform for large organisations, sold by quote. Alleviator is for teams that want their whole site checked and explained in plain words, at a price they can see up front.
Siteimprove sells a platform that manages a large organisation's websites, documents and apps. Its accessibility product uses AI agents to monitor sites, prioritise problems and apply some fixes, and it says it serves more than 5,000 organisations.
Side by side
| Feature | Alleviator | Siteimprove |
|---|---|---|
| Who it's for | Small and medium websites, and teams without an accessibility expert. | Large organisations, regulated industries, public services and global enterprises. |
| Price | Published: free for one page, Pro $49.99 and Max $149 a month. | Not published. You request a demo. |
| What it checks | Public pages: up to 50 per scan on Pro and 1,000 on Max, at desktop and phone sizes, every week if you like. | Whole “digital estates”, including internal pages and pages behind a login, monitored as they change. |
| PDF documents | Checked on Max, with plain-language fixes. | PDF policies, and an AI agent that writes alt text for images in PDFs. |
| Fixing problems | A plain-language fix guide with numbered steps, tailored to 20+ website builders. You or your developer make the fix. | AI agents that apply fixes in WordPress and Drupal, and work inside developer tools. |
| Expert help | A free video call to go through your report. | Certified specialists for manual testing, VPATs and training. |
| Automated accuracy (W3C ACT rules) | 32 consistent, in our own run of W3C's tool. See our benchmarks. | Siteimprove's open-source engine, Alfa, is listed by W3C with 27 consistent rules fully automated and 29 semi-automated. |
Which is right for you?
Siteimprove may suit you if
- You run many websites, intranets or apps, including pages behind a login.
- You want AI agents that apply fixes in your CMS, and expert services under one contract.
- You have an enterprise budget and procurement process.
Alleviator may suit you if
- You want to start today, at a price you can see, without a sales call.
- Your team isn't expert in accessibility and wants steps written for your website builder.
- You need public pages checked well, at desktop and phone sizes, with weekly monitoring.
Sources
Siteimprove is a trademark of its owner, and this page isn't endorsed by them. Facts about Siteimprove were checked in October 2026 from the sources above. Spotted something out of date? Email us and we'll fix it.
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