Sep 11, 2014

Chrome Data Compression Proxy vs Mozilla Janus vs Opera Turbo

Most of web browser vendors provide a way to speed up browsing by using compression proxy. Opera has long been known for its Turbo/Off-road mode, Google Chrome has the Data Compression Proxy and Mozilla has recently introduced the Janus Proxy, which you can access system-wide using a PAC file at http://janus.allizom.org.

I have tested onload event times of various web pages using all three compression proxies and a direct 5 Mb/s connection over WiFi on my PC. Total times as well as Numion YourSpeed results are shown below:

Chrome DCP Mozilla Janus Opera Turbo Direct
ZDNet 11.5 s 24.5 s 11.4 s 11.1 s
CNN 14.3 s 20.0 s 12.2 s 10.7 s
BBC 7.3 s 27.3 s 11.7 s 6.6 s
NYtimes 6.5 s 10.7 s 6.1 s 5.6 s
eBay 8.7 s 14.5 s 7.8 s 8.1 s
Amazon 5.3 s 10.6 s 3 s 5 s
Pinterest 7.4 s 12 s 9.2 s 7.3 s
Wikipedia 3.8 s 6.3 s 3 s 3 s
Total 64.8 s 125.9 s 64.4 s 57.4 s
Numion YourSpeed 218 kb/s 119 kb/s 216 kb/s 308 kb/s

Surprisingly, the fastest is a direct Internet connection, but this would depend on your local bandwidth. Opera Turbo and Chrome Compression Proxy go head to head, both using WebP image format. The slowest is Janus, using MozJPEG instead.

20 comments:

  1. Thank you for stats. It would be also useful to count saved bandwidth.

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  2. The above mentioned feature is not available in the desktop version of chrome. However, there is an unofficial extension that adds the functionality to desktop versions of both chrome and Opera. Opera users have to first install an extension called download chrome extension though. Afterwards, you can install Data compression Proxy from chrome web store.

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  3. On mobile, UCWeb's Android app is powerful enough to convert 100MB into 5MB and that is way faster than any mentioned above. But you will have to spare the style and scripts.

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  4. Can you made these tests again but talking about download size instead of speed? This feature is more important for those who have limited connection and it's not for those who wants speed. Would be nice to see this test again.

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