Top 5 HTML Validators for web developers

Web developers must check whether the page works or not, whether they would look even in most browsers or whether the code is correct by testing the web pages in at least two or three validators. Read this article to find about some free and cheap HTML validators.

Once you design and code your web pages, you must check whether the page works or not, whether they would look even in most browsers. Is the code really correct? It is always better to have a second opinion.

HTML Validators for web developers

One must test in at least two or three validators. Just because a validator tells that a combination of tags do not pass a standard, it does not mean that the page is bad. It's just that sometimes, you have to use extra tags or attributes to make sure that the pages look almost same in different browsers. Thus, it is important to pass the basic tests of validity. This article also tells about some of the free validation tools and resources.

W3C Validator

To check your HTML pages from the source, you can use W3C Validator. This validator checks the code against W3C HTML 4.0 Recommendation according to DOCTYPE tag and it supports all platforms. A certification will be provided to your web page, once it passes the required standards. The validator is available on the official website of W3C Organization. You will also find many web designing tools and resources to modify your web page.

CSE 3310 HTML Validator

This HTML Validator supports DTDs up to HTML 3.2 plus unspecified Netscape and Microsoft extensions. It is a flexible standalone validator for use on desktop. It supports Win95/ NT platforms. The validator is available on the official website of HTML Validator. It is not free but costs low.

WebTechs Validation Service

This is an online resource for validating either an entire page on web or snippets of code using a form. It includes many options like strict interpretations of IETF 3.0 (now withdrawn), W3C 3.2 (Wilbur), W3C 3.2 + CSS1 and W3C 4.0 (draft). The validator also supports DTDs that describe the behavior of proprietary extensions for Mozilla Netscape Navigator, SoftQuad, AdvaSoft, Microsoft IE 3.0 Beta and Microsoft IE. However, the validator can be very temperamental in the face of some types of errors. Many interpretations of the same code, originally a service of HAL software, exist around the web. Many of these can be downloaded for free. The validator supplies HTML Check Toolkit which is a command line version of program for UNIX systems. This validator is available at the official website of Webtechs.

Neil Bowers' Weblint

Weblint is a Perl script. It picks the fluff off web pages and is free of cost. Lint was originally made for C code on UNIX systems. Unlike WebTechs Validation Service, Weblint doesn't supply the extensive error reports. It doesn't know HTML but it is more robust as it keeps generating relevant, meaningful messages even after stumbling on the first serious mistakes. Thus, the validator is very motivating for novice web developers. Other validators quickly start generating page after page of relatively irrelevant and meaningless error messages based on a single missing tag or quote mark. It runs on all platforms including UNIX, Win95/ NT and Mac that support Perl interpreter. The validator is available on the official website of Canon. The site also offers other validation and coding resources, including Web gateways to Weblint software.


This is a special kind of validator that tests your web page for compliance with accessibility guidelines as well as adherence to external standards. It is hard but once you have passed this test, you can put the cute little Bobby logo on your web page as a certification of your design prowess. It is extremely rewarding for any web developer. Unlike most other validators, Bobby validates Lynx, WebTV and AOL compliance and extends the vague 'proprietary extensions' check boxes found in external validation suites to releases of Navigator and IE. The source to Bobby 1.2.1 is available for download as a Perl script. So, it is possible to run it on any system with a Perl engine available. The company promises only UNIX compatibility. Tweak the script to eliminate UNIX dependencies and expand the scope. A Java version of release 2.0 is available that should run without tweaking. It runs on almost all platforms and is available on the official website of Cast for free.

Read What is meant by "URL"?


No responses found. Be the first to comment...

  • Do not include your name, "with regards" etc in the comment. Write detailed comment, relevant to the topic.
  • No HTML formatting and links to other web sites are allowed.
  • This is a strictly moderated site. Absolutely no spam allowed.
  • Name: