Time to speed your website - SparkUp session  drukuj

One of the session on SparkUp conference  was devoted to optimization of performance of websites.
Best practises I would like to remind for everyone who creates  for web that were discussed.

Minimize HTTP Requests

• connect javascript files  and
• use css sprite

Minimize transferred data.

• Minimize css, js and html files,
• use gzip compression
• use caching – for elements that do not change often use header expires,set it for one year
• optimize jpegs- you can often  make then 50 % size smaller without any visible loss. You can do it  by using tools like JpegTran or Smush.it
• optimize png – use png8 when possible

Check also Best Practises for Speeding Up your website

Strongly recommend  to use tools below

• Firebug – tool for web developement
• YSlow analyses web pages and suggests ways to improve their performance
• PageSpeed gives you hint how to optimalize loading time for your webpage
• JpegTran  optimizes jpg
• Smush.it  optimizes all jpgs at once