- Save the HTML template (index.html) anywhere locally and open it using your favorite browser.
- Edit required fields/text etc using any simple text or better code/HTML editor. I use Sublime Text: https://www.sublimetext.com, a high quality, fast and FREE code editor (unlimited trialware like WinRAR).
- Now set the default homepage or new tab open with to this HTML file.
- Done!
Look at my comment below is an example (mine):