Localization, which is which involves building codes and translation of the language table to a new language in a web interface, is a time consuming and tedious job. The localization filter often makes two kinds mistakes as they might grab some code as text string or it might ignore a text string as a code. Automated testing using computer programs are found to be very efficient in receptive checking of these mistakes quickly. It is recommended that automated testing using UTF-8 would help to save considerable time, providing better results.