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Disabling DNS Prefetching

All,

anyone know how to disable DNS prefetching in safari 5?

I want to do some testing of page load times with it on and off as I have severe hang times loading random url's post safari 5 upgrade.

Thx,
Michael

MBP, Mac OS X (10.6.4)

Posted on Jul 25, 2010 7:03 PM

21 replies

Oct 6, 2010 6:46 PM in response to andyBall_uk

it would be nice if pre-fetching was an option to turn on and off in Safari.

Klaus1

Level 9

52,749 points

Oct 7, 2010 1:33 AM in response to powerbook1701

I, for one, agree.

You can use this form for sending Apple feedback about Safari:

http://www.apple.com/feedback/safari.html

Oct 7, 2010 4:12 AM in response to Klaus1

Thanks, already did before posting. Just reading that thread reminded me that I wanted to do that as soon as it came out.
For something that can impact Safari so much, it would be nice to control it..at least on or off

Oct 7, 2010 8:38 AM in response to powerbook1701

After what happened to Safari a few days ago i will leave it enabled.

Feb 27, 2014 2:26 PM in response to andyBall_uk

Hi,

first I must appologize, I am a really new Mac user ...

I would like to know how I disable DNS-prefetching for all users per default. Or do I need to run the command above once for every user I have created on my Mac?

I also assume that once executed the command to disable dns-prefetching this will be kept unless I enable dns-prefetching again. And this also if I restart my mac and login again on my profile.

Correct?

BTW: I tried to read the value of WebKitDNSPrefetchingEnabled but this is only working several times directly after having written this attribute to false. After some more repeats I get the following message

>defaults read com.apple.safari WebKitDNSPrefetchingEnabled

2014-02-27 23:23:39.140 defaults[9167:507]

The domain/default pair of (com.apple.safari, WebKitDNSPrefetchingEnabled) does not exist

Any feedback would be most appreciated!!!

THANKS

Jun 11, 2015 9:30 AM in response to pancho2412

I've tried to get the plist setting to stick and it always deletes itself as soon as safari starts up. WHY CANT WE DISABLE THIS?!

Safari 7.1.6

I've left product feedback with apple following the link above.

Disabling DNS Prefetching