According to statistics, the average size of web pages has tripled since 2003. From 2003 to 2008, the average size of web pages increased from 93.7K to 312K, an increase of 233%. At the same time, within these 5 years, the average number of objects in a web page doubled, from 25.7 to 49.9. Combined with earlier data, since 1995, the average size of web pages has increased 22 times, and the average number of objects in a web page has also increased 21.7 times.
Growth of the world's top 1,000 most popular web pages in 2007.
In the past year (from December 2006 to December 2007), the volume of the world's most popular 1,000 web pages increased by an average of 24.2%, from 250K to 310.4 K, based on this growth rate, this number may exceed 385K by the end of 2008. The number of objects in web pages increased by 14.5%, from an average of 44.2 to 50.6.
Page response time trends
from 2003 to 2008, narrowband users (56K Modem and ISDN users) have to endure increasingly serious page response slowness. In contrast, broadband users experienced gradually improving response times, from 2.8 seconds in February 2006 to 2.33 seconds in February 2008.
Statistics of page elements (2006)
Ryan Levering and Michal Cutler conducted statistics on 21,500 non-Frame web pages in 2006 and found that these web pages contained an average of 474 words, 281 HTML tags, and 41 links, of which 10 The first is off-site links. They also found that the average page height is 1440 pixels, which is twice the height of the screen. When the page is opened, users see the most graphics instead of text. Graphics are the most important objects on the web page. , graphics are the biggest factor in slow page opening speeds.
Changes in 2007
Similar statistics in 2007 found that although CSS has been widely adopted, 62.6% of pages still use table layout and 32.8% of web pages use font tags. However, the average table nesting depth has been halved compared to 2006. , dropped from level 2.95 to level 1.47. Overly complex nested tables will slow down page rendering. Compared with 2006, the average number of HTML elements in a page doubled in 2007, from 281 to 592.6.
Usage of JavaScript
In 2007, 84.8% of web pages used scripts. The average size of external scripts was about 8K, and after compression, it was about 6K. The total script size is 68K, compressed to 49K. The average number of external scripts is 7.
According to statistics onCSS usage
in 2007, 82.4% of web pages used link tags, 54.5% used style tags (an average of 2.27 internal style tags), and the average size of external style tables was 6K and 4K after compression. , the total size of the style sheet is 15K, and the size after compression is 10K.
Usage of pictures
Statistics in 2007 show that 91.6% of web pages use pictures. The usage of pictures in various formats is shown in the table below.
Image format 2006 2007 GIF 77.9% 84.6%
JPEG 55.8% 64.5%
PNG 7.2% 32.2%
BMP 0.8% -
The growth trend of multimedia content
The use of streaming media is growing at an almost 100% rate every year. From 2000 to 2005, the capacity of streaming media files increased by 600%, and 87% of streaming media content was in the top 10 played Interrupted by users within seconds, yet they waste 20% of server bandwidth. Statistics also show that 3% of streaming media is video, but it takes up 98.6% of the bandwidth. 10% of the most popular videos are from YouTube, grabbing 80% of the eyeballs.
In 1997, 90% of videos were no longer than 45 seconds. In 2005, the average length of videos was 120 seconds. By 2007, the length increased to 192.6 seconds. The bitrate of videos increased from 200K in 2005 to 328K in 2007. (YouTube). Therefore, at the end of 2007, the average size of video content was 63M. On YouTube, the average size was 10M, and 65,000 new video files were added every day.
International source of this article: http://www.websiteoptimization.com/speed/tweak/average-web-page/
Chinese translation: COMSHARP CMS