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What the heck are cookies and what do they do?*

*We’re talking about cookies on your browser, not the edible kind unfortunately.

EVERY WEBSITE YOU visit will mention the same thing upon arriving. It will tell you it’s using cookies, you click ok to get rid of the banner ad that popped up and you go on your merry way.

For the most part, they don’t impact you in any significant way, but it’s worth explaining what exactly they are and how far they can reach.

So what are cookies?

Cookies are a site’s way of tracking your movements while visiting and remembering specific details about it. They come in the form of small text files, with ID tags stored in your browser’s directory for future reference.

One site can have multiple cookies, many from sites you haven’t or will not visit like ad sites, that will be saved on your browser for future reference.

The type of cookie saved is either temporary or permanent. The temporary cookies only remain while you’re still on the site. When you leave, they disappear. Permanent cookies stay saved onto your browser for the next time you log in.

So how much information do they save?

Not a whole lot. As mentioned, cookies are small text files that save three main details: the name of the server it was sent from, how long it lasts and a randomly generated unique number.

Cookies don’t save private or personal information nor can they go through your PC for additional information. They have only one function and that’s only related to the site you’re currently visiting.

Google cookie permissions Some of the cookies used on sites like google.com come from other sources.

What can they be used for?

They allow two things. The first is convenience. By saving data from your last visit, it will load up faster and remember details so it loads up faster. If a site has any customisable features designed for use like sign in, it can save that for you so the next time you visit, you don’t need to go through the same process.

The second and unsurprising part of cookies is they determine the type of ads you see. Have you ever viewed an item on Amazon before visiting another site and seeing it or a similar item being advertised? That’s because of cookies telling those sites where you’ve been and adjusting its ads so they’re more appealing to you.

Some cookies can track your browsing history which leads to this, and for that reason alone, some may feel that is a little invasive, but there are ways to remove them if you feel that way.

How so?

For one, you can delete cookies entirely by going into your browser’s history. This is usually found in settings but all of them allow you to wipe clean cookies and other cached data.

You can also view and block individual cookies by clicking the icon to the left of the site’s URL – normally a lock, globe or page icon – or by going into the browser’s settings.

Chrome browser settings How cookies are found in Google Chrome.

You could go a step further and download a plugin like Cookie Inspector for Chrome, a plugin that allows you to delve deep and edit cookie properties.

If you do block cookies, it could mean that you will lose some functionality for certain sites, or that you will have to enter in details or change settings every time you visit.

Read: What Web Summit? Two new events for Irish startups to sink their teeth into >

Read: Zuckerberg has distanced himself from ‘deeply upsetting’ comments about India >

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4 Comments
    Install the app to use these features.
    Mute liam mc meel
    Favourite liam mc meel
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    Nov 28th 2023, 4:12 PM

    Didn’t think we had woodpeckers in ireland

    108
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    Mute Philip Murphy
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    Nov 28th 2023, 4:41 PM

    @liam mc meel: shoot

    11
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    Mute Philip Murphy
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    Nov 28th 2023, 4:41 PM

    @Philip Murphy: shoot them or se

    3
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    Mute michael odwyer
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    Nov 28th 2023, 5:05 PM

    @liam mc meel: I’ve been listening to them chipping away at the trees for a good few years now. Sounds like a machine gun being shot in the distance

    33
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    Mute DJ Bermo
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    Nov 28th 2023, 5:14 PM

    @michael odwyer: Indeed! They can heard rattling away at the metal tops of telegraph poles along the banks of Lough Erne. Some noise to experience!

    21
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    Mute Setanta O'Toole
    Favourite Setanta O'Toole
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    Nov 28th 2023, 5:59 PM

    @liam mc meel: they are pecking up their passports on the way over.

    29
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    Mute john kenny
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    Nov 28th 2023, 7:57 PM

    @liam mc meel: only in last 20 years. They flew in from Wales.

    11
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    Mute F Fitzgerald
    Favourite F Fitzgerald
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    Nov 29th 2023, 9:01 PM

    @liam mc meel: It’s amazing, I’ve never seen one here. I was going to say they’re very striking :-D

    1
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    Mute Dvsespaña
    Favourite Dvsespaña
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    Nov 28th 2023, 4:27 PM

    Ha ha ha HA ha, Ha ha ha HA ha, heh-heh-heh-heh-heh-heh-heh!

    61
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    Mute paulinlavally@gmail.com
    Favourite paulinlavally@gmail.com
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    Nov 28th 2023, 8:12 PM

    Can’t comment on Finland taking action on illegal immigration. Why?

    62
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    Mute Timo
    Favourite Timo
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    Nov 29th 2023, 1:50 PM

    @paulinlavally@gmail.com: because the government told them not to let you

    6
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    Mute robbie scanlon
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    Nov 28th 2023, 5:51 PM

    How about the so called professionals ESB put the electrical infrastructure underground? No let’s blame the woodpecker. And the top brass are earning €100,000s.

    57
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    Mute The next small thing
    Favourite The next small thing
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    Nov 28th 2023, 6:18 PM

    @robbie scanlon: How much do you think it would cost to put all the cables underground, billions? Are you willing to pay this extra on your bill? We allow one off developments and this is some of the cost associated with it.

    36
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    Mute David
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    Nov 28th 2023, 7:21 PM

    @The next small thing: The cost, the cost, oh what about the cost.
    These people are making hundreds of millions per year, let them upgrade their own infrastructure or get out of the game and let someone in that will think of everyone, including our animals.

    You wanna punish the animal for getting in the way of capitalism!

    31
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    Mute The next small thing
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    Nov 28th 2023, 8:03 PM

    @David: Bless your naivety if you think the end customer won’t pay the cost. I never mentioned animals in my comment so I don’t know why you brought that up however seeing as you have then surely you are against one off developments which destroys their habitat.

    16
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    Mute Timo
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    Nov 29th 2023, 1:50 PM

    @robbie scanlon: why not blame the Donald

    1
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    Mute Jerry Collins
    Favourite Jerry Collins
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    Nov 28th 2023, 4:35 PM

    These woodpeckers are live wires with no forwarding address or postal code for billing purposes

    47
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    Mute Donna Fallon
    Favourite Donna Fallon
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    Nov 29th 2023, 3:11 AM

    @Jerry Collins: brilliant!!

    6
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    Mute mcleixlip
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    Nov 28th 2023, 4:53 PM

    They’re Welsh, not Poles. [Insert rant of choice about migrants]

    42
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    Mute Paul Gorry
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    Nov 28th 2023, 5:31 PM

    Still not as irritating as the noise Mary Toilet makes when she opens her gob

    44
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    Mute Martin Mongan
    Favourite Martin Mongan
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    Nov 28th 2023, 11:14 PM

    @Peter Murray: and now your having a conversation with yourself

    8
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    Mute Donna Fallon
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    Nov 29th 2023, 3:09 AM

    @Peter Murray: jeez Man are you ok??

    7
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    Mute Willie Marty
    Favourite Willie Marty
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    Nov 28th 2023, 5:03 PM

    Are those woodpeckers migrants from Wales.Shouldnt they be in direct provision and be made to apply for asylum

    40
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    Mute Garreth Byrne
    Favourite Garreth Byrne
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    Nov 28th 2023, 4:37 PM

    Wood (oops Would) treating telegraph poles with tar deter woodpeckers from damaging them?

    30
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    Mute P.J. Nolan
    Favourite P.J. Nolan
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    Nov 28th 2023, 5:07 PM

    @Garreth Byrne:
    Not much fun if you are the worker that has to climb that pole after….

    27
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    Mute David
    Favourite David
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    Nov 28th 2023, 7:15 PM

    @Garreth Byrne: Or maybe change the material of the pole and stop punishing the wood pecker for being a wood pecker?

    32
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    Mute Edward Hughes
    Favourite Edward Hughes
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    Nov 28th 2023, 4:57 PM

    Nial “Hatch”…….. born for the job:)

    20
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    Mute David
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    Nov 28th 2023, 7:17 PM

    @Edward Hughes: Ya gotta wonder if the name provoked his interest.

    8
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    Mute MM
    Favourite MM
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    Nov 28th 2023, 9:33 PM

    Amazing to have so many of them they run out of trees. We need more native trees and less conifer plantations…

    20
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    Mute larry smith
    Favourite larry smith
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    Nov 28th 2023, 4:57 PM

    Everyone says I’m paranoid for starting these Morse code lessons ,but I’m positive those woodpeckers are talking sh,t .

    47
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    Mute Fintan Stack
    Favourite Fintan Stack
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    Nov 28th 2023, 5:32 PM

    Seriously though, why have shops stopped stocking strawberries? Usually imported from Spain this time of year.

    17
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    Mute Donna Fallon
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    Nov 29th 2023, 3:16 AM

    @Fintan Stack: oh Maaann!! Good point even though it’s such a First World problem… I used to grow my own I’d defo recommend it x

    6
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    Mute Timo
    Favourite Timo
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    Nov 29th 2023, 1:53 PM

    @Fintan Stack: parsnips from Spain too

    1
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    Mute Mick Hanna
    Favourite Mick Hanna
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    Nov 28th 2023, 8:07 PM

    Pesky woodpeckers, coming over here, taking our poles, messing with our trees! Round them all up and send them back! ;- )

    17
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    Mute Donna Fallon
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    Nov 29th 2023, 3:10 AM

    @Mick Hanna: lol love it!!

    3
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    Mute Jerry Collins
    Favourite Jerry Collins
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    Nov 28th 2023, 4:32 PM

    These woodpeckers are live wires

    13
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    Mute Murto O Brien
    Favourite Murto O Brien
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    Nov 28th 2023, 5:33 PM

    Are these immigrant woodpeckers ?

    14
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    Mute michael cox
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    Nov 28th 2023, 10:39 PM

    Woodpeckers will not eat timber treated with creosote

    9
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    Mute kay tombe
    Favourite kay tombe
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    Nov 28th 2023, 7:18 PM

    Would these nests effect the overall structure safety and useable of these poles. I wouldn’t think so why not leave be.

    Is this English?

    8
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    Mute J M
    Favourite J M
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    Nov 28th 2023, 5:24 PM

    Would these nests effect the overall structure safety and useable of these poles. I wouldn’t think so why not leave be.

    8
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    Mute Jerry LeFrog
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    Nov 28th 2023, 8:13 PM

    @J M: “affect”. Apparently they do, since they are causing power outages.

    7
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    Mute kay tombe
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    Nov 28th 2023, 8:52 PM

    Would these nests effect the overall structure safety and useable of these poles. I wouldn’t think so why not leave be.

    Is this meant to be English?

    5
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    Mute F Fitzgerald
    Favourite F Fitzgerald
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    Nov 29th 2023, 9:00 PM

    Would they not set up the old poles they had to replace, so the birds can still nest in them? Or add new ones nearby that are shielded & leave the inhabited ones in place?

    1
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