Blazing fast site validation.
Catch A11Y and HTML issues in your large sites, in seconds
Is your website valid?
As a professional web developer, you take accessibility and HTML markup validation seriously. As part of your development process, you validate your site at the W3C Validator or use tools like aXe core to ensure that your sites are accessible. But validating a large site with hundreds or thousands of pages would take ages, so you're tempted to skip it.
Let our crawler do this for you! Just submit a starting URL and we'll validate all the internal pages for you. As simple as that.
Since our launch, our users have validated 380000 web pages, catched 1860000 HTML issues and 30000 accessibility violations.
Just give us a starting URL and we'll visit it to discover its internal pages, validate each of them using the latest versions of the W3C Validator and the axe-core accessibility engine, and produce a detailed report in seconds.
Validate large sites
Our web spider will crawl your site and check up to 5,000 pages for HTML5 conformance and accessibility, using the latest validation software, with a single click.
You can also submit an XML sitemap to specify exactly the pages to validate.
For each accessibility violation found in your site we'll provide a description of the issue, a snippet of the code that's causing it, information about its severity and which guidelines are being violated (e.g. WCAG 2.0, Section 508, etc.), and guidelines for fixing the issue.
Your pages will be checked for HTML markup conformance with the Nu HTML Checker, a project maintained by the W3C that is the backend of validator.w3.org/nu. You'll get a description of the issue, its severity and a snippet of the code where it's found, with direct links to your source code.
What our users say...
Web studios and freelance developers from all around the world use Rocket Validator to validate HTML on their sites as part of their web development process. Our service helps them quickly identify the parts of their sites that need more attention, so they can be fixed and re-checked until they're valid.
Director of Humaan. Perth, Australia
We've only been using Rocket Validator a short while but it's been incredibly powerful in helping us validate multiple large sites in a very short amount of time.
It has quickly become an invaluable tool in our website QA process.
Webmaster of www.OrientalOutpost.com. San Diego, USA
The days of validating HTML 5 one page at a time are over! 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).
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!
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.
Think of it as a tool to find the needles in the haystack!