Ian Fieggen Ian's Software Site Ian's JPGExtra program
Ian's Software Site - Minimalist software programs that are tiny yet very powerful
PNGExtra - Sample Web Page
Typical web page before and after PNG optimization Typical websites, particularly shopping and photo sites, contain many individual PNG files on each page. After optimizing those PNG files with PNGExtra, web pages go from "empty" to "full" much faster.
Note: Although the following simulation is based on my Shoe Lacing Photos page, which uses JPG images and thus would be optimized with my JPGExtra program, the visual concept of a web page loading more quickly is still the same.

Before and After PNGExtra Optimization
Lacing Photos web page with simulated original JPG files Lacing Photos web page with simulated optimized JPG files
  • Page framework loads first;
  • Each image then loads slowly;
  • Page appears "empty" for longer.
  • Page framework loads first;
  • Each image then loads quickly;
  • Page appears "full" sooner.

Widespread Problem
I've found that almost ALL websites have PNG files containing hidden extras, ranging from a few bytes to tens of thousands of bytes per file. Large numbers of such files on a website can create a significant impact, more than just making the site seem slow:
  • Increased disk space requirements;
  • Higher bandwidth costs and higher peak bandwidth;
  • Longer page load times, which affects web rankings;
  • Greater memory usage, which can affect visitors' computers.
Anyone serious about website optimization will understand that it pays to strip ALL excess from PNG files to make them as lean and fast as possible.

Related Links
Smaller percentage of extras in a typical mid-sized PNG file Sample PNG File
Revealing the "extras" inside a typical PNG file.
Download PNGExtra onto your computer Get PNGExtra
Download PNGExtra onto your computer.

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