I was working on the performance of delivering mails for one of my client project. The major time lag for delivering mails was in conversion of external stylesheets to inline css for mails. We used premailer to do the conversion process. I created this project to fasten my analysis and show benchmark for the conversion. The project is a single page application built on Ruby on rails.

• Project
• Source Code

1. Gave me knowledge on conversion of external stylesheets to inline which is very helpful for email templates
2. Got a chance to analyse the source of premailer and nokogiri and found that the entire delay was in the searching mechanism of Nokogiri