1. Web Authoring
Topic 11 –
Importance of HTML Validation

2. Objectives
Students should able to:
1. Explain what is HTML validation.
2. List the benefits of HTML validation

3. What is HTML validation?
It is the process that analyzes an HTML
document in comparison to standard
HTML rules, identifying errors and non-
standard codes.
You can check the html validation of
your web page by entering your url at:
http://validator.w3.org/

4. Benefits of HTML validation
1. Web Site Accessibility
2. Search engine friendly pages
3. Faster Loading
4. Less load on servers
5. Easier to update and maintain web site
6. Browser compatibility
7. Access more visitors

5. Benefits of HTML validation
1. Web Site Accessibility
Validating your html code helps to pinpoint
areas of potential blockage that could
prevent search engine spiders or visitors
from accessing your website.

6. Benefits of HTML validation
2. Search engine friendly pages
Clean and simple code enables search
engines to spider your pages more quickly
and completely.

7. Benefits of HTML validation
3. Faster Loading
If your web page contains html errors, it will
take a longer time for the search engines to
spider it, therefore slowing the loading time.

8. Benefits of HTML validation
4. Less load on servers
Clean and simple code will not tax your
server as much as a site which has
complicated code or contain many nested
tables.
Cascading style sheets (CSS) will greatly
reduce the amount of code within your web
pages.

9. Benefits of HTML validation
5. Easier to update and maintain web site
With no mistakes in your html code, it is
easier and faster to make changes to your
web pages.
This means you will save time and money
when maintaining clients' sites.

10. Benefits of HTML validation
6. Browser compatibility
Validated code ensures your site is
compatible with the current browsers and
future browsers.
Current browsers will continue to update
their rules and future browsers will make
sure they are html compliant.

11. Benefits of HTML validation
7. Access more visitors
If you ensure your web pages appear
correctly in all the major browsers you will
be able to reach a larger audience, which
then increases the potential of your site to
make more sales.