Offline HTML5 validator. Validates either a full document or a smaller (incomplete) template, e.g. from an AngularJS or Vue.js component. Can test fragments of HTML, for instance a component template.

HTML forms are a crucial aspect of web development and allow users to input data that can be submitted and sent to a server for processing. However, it is essential to ensure that the data being ...

This is not a full-blown HTML spec validation (intentionally). The parent-child nesting is considered valid if the Browser does not modify it, regardless of whether or not the HTML spec considers it ...

A recent tweet from Google’s Gary Illyes called attention to problem of invalid HTML. Google is fine with invalid HTML. Less well known is that there are negative outcomes associated with invalid HTML ...