W3C HTML & CSS Validation Services

The Markup Validator is a free service by W3C that helps check the validity of Web documents. Most Web documents are written using markup languages, such as HTML or XHTML. These languages are defined by technical specifications, which usually include a machine-readable formal grammar (and vocabulary). The act of checking a document against these constraints is called validation, and this is what the Markup Validator does.

Validation as a future-proof quality check

Checking that a page “displays fine” in several contemporary browsers may be a reasonable insurance that the page will “work” today, but it does not guarantee that it will work tomorrow.


Validation is one of the simplest ways to check whether a page is built in accordance with Web standards, and provides one of the most reliable guarantee that future Web platforms will handle it as designed.

Google Index

Why valid code is important? Because we not just publishing style, we publish data. Markup is about data, and we want data to be open not to just human eyes, but all sorts of agents. The semantic web is coming, eventually, and we don't want to revisit the work we do now. We have already work so hard to share data and have people interested in data, we are all happy to have help from external sources. It would be akin to fixing up old pages that have been so badly written that Google can't index them. Like microformats: they are an intermediate step on the way to the semantic web. That's why valid code is important.


Errors in your markups can seriously penalize load times on pretty much all browsers though it's more noticable on larger pages than small ones.


"Validators" it is actually about the browsers. While parsing the HTML content, the browsers switch the rendering engine to Quirks Mode if the find the document not to be valid.


The question is: "Valid sites work better?" The answer is: "They do work better, but never forget to view them in different browsers to adjust whatever doesn't look as it should."


Three years ago, clients would reject any suggestion for semantics and validation. However, after Search Marketing experts agreed that semantically written HTML/CSS code which passes validation and meets Accessibility, i.e., Web Standards, benefits search engines results positions - clients want valid sites.

Our guarantee at Just Rs. 10,000 per Month :

search engine optimizationAll pages of your website will be W3C HTML Validated.


Weekly review of your website for HTML Validation



Contact us on sales@som-inc.in for

Free Analysis of your Website




Quick Contacts


Just Rs. 10,000 (USD 200) per month


Clients Testimonials

"Hats off to Stellar Online Media. In just two months Stellar have brought down our marketing cost drastically. They have reduced our pay per click cost from INR 10 to INR 6 in just two months. In the month of September 09 we got 67,890 click at INR 6 CPC and saved INR 27,156."


"Anirudh - Marketing Mgr - Apnarelation.com"

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