PrettyTab is a little tool to take some of the thousands of available plain text tablature files and process them into a slightly nicer looking format.
You can save the completed tab file to your machine and refer to it later on. All you need is the single HTML file - there are no attached images or external javascript required.
PrettyTab is written in Ruby using Sinatra as the web stack. The source code is available on GitHub.
What pretty tab does is parse the text file looking for tablature staffs. When one is found, it is converted to a canvas tag in the output document and javascript is added which draws the tab into the page.
I'm a software developer in San Antonio, TX. You can contact me on my GitHub page.