Impacts Of Website Usability And Accessibility Terms on Performance

Website usability (also called accessibility) is an important feature that needs to be addressed while designing a website. Even websites that have already been operational benefit from adhering to good usability standards.

Business benefits: According to a study published in,, usability improved several aspects of a website as below:


Average Improvement

Sales to conversion rate


Visitor count


On average, the improvement is said to be over 135% for Internet websites and slightly less than 100% for Intranet based websites.

As can be seen, there is substantial improvement in the sales/conversion rate and the visitor traffic. It is highly recommended to spend at least 20% of the budget towards website usability. Some of the important DO's and DONOTs' are given at web usability checklist.