Do modern browsers still limit parallel downloads?

Question

In this Yahoo article from 2007, the authors argue that static assets should be split across different hostnames because browsers follow a suggestion from the HTTP/1.1 spec to limit parallel downloads to two per hostname.

My question is, do modern browsers still follow this limit? Using firebug, I noticed that my browser is downloading many more than 2 files in parallel.

sra · Accepted Answer · 2013-03-04T07:39:04.730

18

Microsoft till IE 7 is limited to two IE 8 and 9 to six. Firefox is limited to six. There is a fix out from ms to modify all to ten: http://support.microsoft.com/kb/282402

you can asume that all modern browsers have a default limit of six

Update

Here's a good source for comparing actual browser and their MaxConnextions

edited Mar 04 '13 at 07:39

answered Apr 23 '11 at 15:47

sra

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Links seems not to be working, trying to get some uptodate info (altough not official) found this 2020 post: https://www.linkedin.com/pulse/why-does-your-browser-limit-number-concurrent-ishwar-rimal/ (HTTP1 vs HTTP2 max number of connections)and this older link http://sgdev-blog.blogspot.com/2014/01/maximum-concurrent-connection-to-same.html – Braulio Jan 26 '22 at 16:26

score 6 · Answer 2 · answered Apr 23 '11 at 15:48

6

Yes, there is still a limit. With Firefox, you can go to about:config and look at the value of network.http.max-connections and network.http.max-connections-per-server.

answered Apr 23 '11 at 15:48

a3nm

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Do modern browsers still limit parallel downloads?

2 Answers2

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