The W3C MarkUp Validator: This looks at the (X)HTML doctype you are using for the document you give it to check, and then checks your markup accordingly. This is the one we recommend if you are using an HTML4 or XHTML1.x doctype. It does validate HTML5, but validator.nu is arguably more up to date. The W3C Link Checker: This looks through a. employment type: full-time. job title: Handyman helper. Person needed to help on job sites some tools needed. Will Train. Must pass background check and have valid drivers license. Principals only. Recruiters, please don't contact this job poster. do NOT contact us with unsolicited services or offers. post id: 7514336725. django-html-validator. A tool to do validation of your HTML generated from your Django app. Python 3 compatible. License: MPL 2 Warning! If you don't download a local vnu.jar file (see below), it will use validator.nu and send your HTML there.. If you use htmlvalidator to validate tests it's unlikely your HTML contains anything sensitive or personally identifiable but if you use the middleware. How it works: First, call each individual function to validate username, email, password, and confirm password fields. Second, use the && operator to determine if the form is valid. The form is valid only if all fields are valid. Finally, submit data to the server if the form is valid specified the isFormValid flag.