Why choose Total Validator rather than other solutions? We think there are many reasons to use Total Validator, such as cross-platform and multi-forms support. But our users say that these are probably the top three:
HTML Validators tend to fall into two camps: Many of the HTML standards are encapsulated using DTDs, and DTD validators like the W3C are severely limited by the DTD language. So they can't even test that the values of attributes are correct.
Custom validators can go beyond this. But because they use their own rules they often misinterpret the standards, or miss rules within the DTDs, or add in rules that actually don't exist in the standards. People are only human: The more you do yourself the more likely you'll make a mistake. So custom validators may well test more things, but are more likely to perform worse than DTD validators.
Total Validator is unique in that we test using the official DTDs to ensure that we're as good as any DTD validator, and then add in custom tests for everything that the DTDs can't cover. This ensures the best possible test against the standards.
Note that HTML5 doesn't have a DTD, but it's built on previous standards. So we've produced our own HTML5 DTDs based on the previous ones to ensure that we introduce the minimum of mistakes. Then we've simply added custom tests to cover all of the differences.
Using an accessibility tool on its own is not good enough. Conforming to standards also means strictly validated HTML, or accessibility technology may fail to properly read your site.
Every web professional knows that broken link checkers are essential, and CSS and spell checkers are difficult to find. But think of the time it takes to use each type of tool for each page on your site. Each tool will have its own way of working and produce its own type of report, and there's a lot to learn. Plus you'll need to run each of these tools every time you make a change, so that's a lot of overhead.
Total Validator provides all of these tools in one great package. You can check everything with with just one click with our browser extensions, reducing the time to validate your site (or multiple sites) properly, minimising the costs of making changes.
Standards change, users requests extra features, and sometime bugs are found. We're even working on adding more validations all the time. We want to Total Validator to be the best, and we know you can't be the best by standing still.
That's why we were the first HTML5 validator, then the first XHTML5 validator, then the first HTML 5.1 validator, and probably the only up to date CSS 3 validator. That's why we issue regular updates all the time, and that's why it's worth investing in using our tools rather than any others.