There are many converters on this website to help convert individual words or characters but with this resource you can convert an entire TXT file from simplified to traditional Chinese or from traditional Chinese to simplified Chinese. Generally, simplified Chinese is used in China (People's Republic) and traditional Chinese is used in overseas Chinese communities and in Taiwan and Hong Kong.
You just need to upload your TXT file and we will do the conversion for you. Once the conversion is done, you can just copy and paste the converted text back into your txt file to save it. Give it a try and see for yourself how easy it is to use!
If you want to change a subtitle file (SRT) you can also convert those here.