Pet Project: Sync Subs - Web development, performance, and some other good practices.

I have been working recently on Sync Subs. It is a website that allows you to synchronize a file with subtitles (in SRT format) applying a time offset:

There are lots of websites doing this by letting a user upload a file and then applying the transformation server-side. But with the HTML5 File API you can do this client-side. Thus, you can read the contents of a file, process it and let the user download a file that has been dynamically generated using Javascript in the browser.

I have also been experiencing with Javascript modules written in an AMD style, unit testing, and integration of external services such as Travis (for continuous integration) and Coveralls (for code coverage).

The code is on Github for you to play around with it.