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Digital accessibility monitoring for busy developers

Find Accessibility and HTML issues in your large sites, in seconds. Get your site scanned by Axe Core and W3C Validator with just one click.

Site validation report screenshot

Automated validation integrated with

Site-wide validation made easy

Point our crawler at a starting URL and get HTML and accessibility checks across thousands of pages, with a clear report of what to fix first.

Site report form

One click, thousands of checks

There's a much simpler approach for validating large sites. Leave the hard work to our web crawler. Just provide a starting URL and get:

  • 5,000 validated web pages per report
  • HTML and CSS checks by W3C Validator on each page
  • Accessibility checks by Axe Core on each page
  • Static or Dynamic crawler to find internal web pages

Simple, actionable reports

Our summary reports show what needs fixing first, grouping and prioritizing the common issues across your web pages so you get a clear path of action.

  • Summary report with the common HTML and A11Y issues
  • Detailed reports for the issues on each web page
  • Contextual code snippets for the issues
  • Quick help and tips for fixing the issues
Summary report

Device viewport emulation

See how your pages behave at real device resolutions. Emulate iPhone, iPad, Samsung Galaxy, Kindle Fire and more.

Supported devices

Scheduling and deploy hooks

Run reports daily, weekly or monthly, or trigger them automatically after each deploy to Netlify, Heroku or GitHub Pages.

Scheduling docs

Validated by web standards

Every page is checked with W3C Validator Nu and Axe Core, running on our own servers so your checks are never rate-limited.

How validation works

Raw Checks API

Store and export the full, unprocessed Axe Core and W3C Validator data for each page through our API.

Raw Checks API

Validate protected sites

Check staging and password-protected sites. Credentials are encrypted before storage and attached securely to your reports.

Basic authentication

Built for teams

Invite colleagues to work within your subscription. Control their monthly credits and keep every report in your stats.

Guest accounts

Track your sites' performance day by day

Based on your reports, Stats shows how your sites evolve over time. Filter by domain, tags, guest accounts and date range, and keep up to 365 days of history.

Stats screenshot
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Talk to your accessibility data

Connect Rocket Validator to Claude and other AI assistants through our MCP server. Ask questions in natural language and get instant insights about your site's accessibility and HTML compliance.

  • Browse and analyze your reports with natural language
  • Get prioritized action plans for fixing issues
  • Create new reports and recheck pages on demand
  • Access built-in HTML and accessibility guides
Explore the MCP integration
Claude AI connected to Rocket Validator via MCP

What developers say

Web developers worldwide have integrated Rocket Validator into their digital testing workflow.

Edward Lewis

CEO at XSymmetry LLC
California, USA

Having the ability to validate documents in bulk streamlines the process of identifying and correcting errors on a large scale. The combination of HTML and Accessibility Reporting with detailed actionable data is second to none. I can easily guide a developer through the reports and they get it the first time around.

Almudena García

Freelance Ruby on Rails developer
Girona, Spain

HTML validation is key in creating high quality web sites, but often misregarded, as validating large sites can be tedious. Luckily, we've got Rocket Validator to automate this process, just submit a starting URL and it will validate thousands of pages from your site in minutes.

Jarrad Langdon

Web / Graphic Designer at Jala Design
Sydney, Australia

Now that we are making use of Rocket Validator we are not only saving time, but we are also seeing the excitement in fixing both HTML and Accessibility issues. Overall it's an excellent tool that has dramatically improved our development cycle.

Stephen Livesey

Product Development Director at fulfilmentcrowd
Chorley, UK

Rocket Validator simply makes checking websites for HTML and Accessibility issues a breeze. It's so easy to use, performs validation on a regular basis using a schedule, allows us to check hundreds of pages per site and provides us with automated emails detailing the problems it finds.

Luis Herrero

Freelance front-end developer
Madrid, Spain

One of the key factors in robust web development is markup validation. There are some tools that help you in this task, but none of them is as fast and complete as Rocket Validator. And my students love it!

Gary Westergren

Webmaster of OrientalOutpost.com
San Diego, USA

If you have hundreds or thousands of pages to validate, Rocket Validator can scrape your whole site and in a matter of minutes give you actionable information about pages that need help. Until I found Rocket Validator, this was a task that took hours, (and honestly, rarely got done).

Edward Lewis, CEO at XSymmetry LLC
Almudena García, Freelance Ruby on Rails developer
Jarrad Langdon, Web / Graphic Designer at Jala Design
Stephen Livesey, Product Development Director at fulfilmentcrowd

Rocket Validator in numbers

Web developers worldwide are using Rocket Validator to accelerate their digital testing process.

99,165
Site reports
Generated by our users
12,370,474
Web pages
Found by our scraper
451,771,151
HTML issues
Reported by W3C Validator
99,980,784
Accessibility issues
Reported by Axe Core

Frequently Asked Questions

Rocket Validator provides a simple approach to digital accessibility monitoring.

What's the difference between Micro, Lite, Pro, Agency and Enterprise plans?

You'll get access to different features depending on your subscription level:

  • Micro is the lowest plan, which only allows HTML checks.
  • Lite has everything in Micro, plus accessibility checks.
  • Pro has everything in Lite, plus advanced features like Dynamic Crawler, Raw Checks, Device Viewport Emulation, Muting, Schedules, Deploy Hooks and Guest Accounts.
  • Agency has everything in Pro, plus Basic HTTP Authentication.
  • Enterprise has everything in Agency, with much more capacity in terms of credits and guest accounts.

Each plan has increased capacity in terms of credits, pages per report, requests per second and number of guest accounts. Check the Pricing Advisor table to compare features and capacity of the different plans.

Can I cancel or change plans any time?

Yes, all plans work as recurring subscriptions: you decide if you want to renew weekly, monthly or yearly. You can cancel your subscription any time, and your subscription will be valid until its end date, you won't be charged after it ends.

Can I subscribe to more than one plan?

Yes, plans work like packages and you can get as many as you need. For example, you can subscribe to a Pro Monthly plan and it will give you a sustained capacity of 50,000 credits per month. Then let's say you have a lot of client work to check during a given week, you can subscribe to an additional Pro Monthly plan and have your capacity increased to 100,000 credits during that month.

Can I combine different kinds of plans?

Yes, you can subscribe to different kinds of plans. For example if you have a Pro Monthly plan and find that the monthly credits are not enough, you could combine it with a Lite Monthly plan to get extra credits. Feature-wise, you'll have all the Pro features. The credits added by the Lite plan can be used for the Pro features as well.

How do credits work?

Rocket Validator usage is measured in credits. Each individual HTML or accessibility check you perform on a web page costs one credit. For example, if you submit a site to be checked for HTML and accessibility and you set the report to 100 web pages, then we'll perform 200 checks for you (100 web pages, 2 checks on each page), so 200 credits will be substracted from your total.

Is there a free trial?

Yes, you can sign up for a free trial that will let you check up to 25 pages for HTML issues. Also, if you want to try all the features (accessibility validation, schedules, deploy hooks, muting) you can get Pro trial at a reduced price.

Can I validate more than one site?

Yes, there is no limit on the number of sites or domains you can validate. The only limit is the total number of checks done during your subscription, for example the Pro Monthly plan lets you perform 50,000 checks per month.

Can I share reports with other people?

Yes, you can share your validation reports with anyone. Just send the protected URL to your clients or colleagues, and they'll be able to see the validation results just like you - but they won't be able to modify the report, only you can control this.

🌍 Trusted by teams worldwide

Validate at scale.
Ship accessible websites, faster.

Automated HTML & accessibility validation for large sites. Check thousands of pages against WCAG guidelines and W3C standards in minutes, not days.

Scheduled Reports
API Access
Open Source Standards
$7 / 7 days

Pro Trial

Full Pro access. Cancel anytime.

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