Coursera Subtitle Re-sizer

Does not work, it changes the DOM structure of the page itself. waste and useless extension.

Doesn't work, rather a extension with similar name worked for me : coursera subtitle resizer. https://chromewebstore.google.com/detail/coursera-subtitle-resizer/eaiabkjipjhalikppkkjoeefjnphgbpe

OK but not working properly. Can you share the source code so that I can try to fix it?

Thank you so much !!! :) Works like a charm.