HTML validation and CSS validation are controversial issues with some people. This article discusses some of the issues that have come increasingly to the fore in web development. The article will also provide a practical method that overworked webmasters can use to improve their website.

What does Validating HTML or CSS Mean? For those who are unfamiliar with what validating a web page means, it basically refers to using a program or an online service to check that the web page that you created is free of errors. In particular, an HTML validator checks to make sure the HTML code on the web page complies with the standards set by the W3 Consortium (the organisation that issues the HTML standards). There are various types of validators - some check only for errors; others also make suggestions about your code, telling you when a certain way of writing things might lead to unexpected results. A CSS validator checks your Cascading Style Sheets in the same manner; basically, most will check them to make sure that they comply with the CSS standards set by the W3 Consortium. There are a few which will also tell you which CSS features are supported by which browsers. Note that validating your web page does not ensure that it will appear as you want in various browsers. It merely ensures that your code is without HTML or CSS syntax errors. Ensuring that your code appears correctly in different browsers require cross browser testing.

Why Validate Your HTML Code?

1. It Helps Cross-Browser, Cross-Platform and Future Compatibility Although you may be able to create a web page that appears to work on your favourite browser (whatever that may be), your page may contain HTML errors (or CSS errors) that do not show up with that browser due to an existing quirk or bug. Another person using a different browser that does not share that particular bug will wind up viewing a page that does not show up correctly. It is also possible that later versions of your browser will fix that bug, and your page will be broken when people use the latest incarnation of the browser. Read more…

• Why is Validation Important?
• Web-standards and validation

Why you should make sure that your webpages are validated? Thats exactly what we’re going to answer in this tutorial. Hopefully you’ve heard off XHTML and HTML. HTML is the older coding and XHTML is the new generation of HTML. This is the web stanadard set by the World Wide Web Consortium (W3C) they set standards for the internet. This tutorial will use references to W3 quite often, so if you haven’t heard of them till now you might want to consider checking them out and seeing the work they do.

What is Validation?

Validation is a process of checking your documents against a formal Standard, such as guidelines published by the World Wide Web Consortium (W3C) for HTML and XML-derived Webpages. Consider Validation like Microsoft word for a moment. Imagine you’ve wrote a 5000 words essay and any spelling mistakes made would mark you down for that essay. To make sure this doesn’t happen you would use a spell checker to check grammar and spelling, you could also check it yourself, but a spell checker is more accurate. Validation is like a spell checker it is a precise process and is very reliable. Precise because it deals with languages in the ways browsers work as well as specific machine langauges. Read more…

• CSS Validation and HTML
• Web-standards and validation

W3C is the World Wide Web Consortium, which is an independent organization that manages code standards on the web (e.g. HTML, CSS, XML and others). Microsoft, The Mozilla Foundation and many others are a part of W3C and agree upon the future developments of the standards.

If you have been working just a bit with web design, you probably know that there can be a big differences in how a webpage is presented across different browsers. It can be very frustrating and time-consuming to create a webpage which can be viewed in Mozilla, Internet Explorer, Opera and all the rest of the existing browsers. Read more…

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