2010 compression survey on the top 1000 corporations

Port80 proudly presents its HTTP compression survey for 2010 - - Compression is one of the best supported and yet underutilized technologies available on the Web today. By using the deflate and gzip data compression algorithms, HTTP compression optimizes files for delivery across the Web, leading to faster page loads and reduced bandwidth costs -- a key WAN performance optimization.

2010 Compression Results: HTTP Compression Use Up Slightly Since 2007

After years of rapid growth, the rate of adoption of HTTP compression has slowed among the Top 1000 crowd in the last few years, but is still showing an upward trend. This suggests that the easy gains from enabling compression may been realized and firms now face more complex cases which take advantage of compression will require more sophisticated tools.

*Top 1000 HTTP Compression Survey, February 2010. Allow 3% variance/error for changes since date data first collected.


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  • 303 Fortune 1000 sites use some form of HTTP compression, a slight increase from 2007 numbers.
  • While only 303 of the Fortune 1000 realize the benefits of HTTP compression, among these compressed sites you will find Wal-Mart, Google, Amazon, and eBay. For the Internet's most successful companies, HTTP compression is a business requirement and a best practice.
  • The Top 1000 could save a little over 20% percent in bandwidth bills (millions of dollars annually), speeding up their home pages and sending around 45 KB less on average with every home page served -- if they used compression tools like httpZip, IIS 6.0 built-in compression with ZipEnable for Windows Server 2003, and others for Netscape and Apache. Updated from the 2009 Fortune 1000 list of company Web sites.
  • 66.6% off IIS users are not compressing their sites. (missing out on substantial bandwidth savings)

Test your own site's compression and calculate your possible bandwidth savings today.


NOTE: Compression of the Top 1000 sites surveyed was tested using the following independent tools: http://www.microsoft.com/search/tools/default.aspx", http://www.gidnetwork.com/tools/gzip-test.php. Using both www.example.com and example.com naming conventions. When necessary, site redirects were included in the compression test as well.

This survey focuses on the public facing sites of Fortune 1000 sites, it does not follow that HTTP compression is not used at all within a non-compressing organization, it does say though that the public facing site which many conumers use is missing out on easily gained performance improvements.

The criteria used for this study was to look at the letter grade, specifically for "Compress Text", which includes .html, .css, and .js files among others (% is calculated by the target compression (KB) / the total amount of compressible text (KB) ). Sites were deemed to have "passed" the compression test if they received a C or higher and assigned a "yes compressed". Those that received D's and F's failed and were assigned "no compression". So in a sense it makes the results not as binary as "yes they use compression" or "no they do not use compression", but rather the results suggest that some sites are maximizing the use of compression much better than others. While this may be a very fundamental observation, the data suggests that a large group of the Fortune 1000 fail when it comes to using Text Compression for optimizing their corporate homepages and "primary public face" on the Web. There is certainly a large opportunity for improved site optimization specifically in the area of text compression, and only about 35% (upper bound) of the current Fortune 1000 have come onboard with the savings, increased performance, and likely happier customers where page loading times are concerned.

To see our complete survey data with breakdowns you may download the MS Excel file here ».