Turn Off Personalized Ads Wherever You Can

Personalised advertising runs on a profile: what you searched, bought, watched, read, and where your phone has been. Turning personalisation off does not make ads disappear — it makes them generic, and more importantly it reduces how much of that profile is built and shared in the first place.

Budget twenty minutes. Do it once a year.

The switches worth flipping

Google. My Ad Center (myadcenter.google.com) — turn personalised ads off. While you are there, open Activity Controls: switch off Web & App Activity, YouTube History and Location History, or at minimum set auto-delete to three months.

Android. Settings → Privacy (or Google → Ads) → Delete advertising ID. This is stronger than the personalisation toggle: it removes the identifier apps use to link you across services.

iPhone / iPad. Settings → Privacy & Security → Tracking → turn off Allow Apps to Request to Track. Then Settings → Privacy & Security → Apple Advertising → turn off Personalised Ads.

Meta (Facebook, Instagram). Accounts Center → Ad preferences → Ad settings: limit activity from partners, and review the "Your activity off Meta technologies" section — you can disconnect past off-site activity and stop future linkage.

Microsoft, Amazon, TikTok, LinkedIn each have equivalents under Privacy or Ad preferences. The pattern is always the same: the switch exists, and it is three levels deep.

The browser does more than all of them

Ad settings apply per account. Browser settings apply to everything:

• Block third-party cookies. Standard in Safari and Firefox, a setting in Chrome.
• Use tracking protection — Firefox's Enhanced Tracking Protection (Strict), Safari's Intelligent Tracking Prevention, or a content blocker such as uBlock Origin.
• Prune site permissions. Location, camera, microphone and notification grants accumulate for years: clear your browser's site permissions.
• Separate contexts. One browser or profile for accounts you are logged into, another for general browsing, keeps the two graphs apart.

What the opt-out does not do

Be realistic about it:

• Data is still collected. You are switching off use for targeting, not the logging itself.
• Contextual ads remain — ads matched to the page rather than to you. That is the good kind and does not need your history.
• Data brokers are unaffected. They buy from other sources entirely, and need separate opt-outs: data brokers have your info — how to start opting out.
• Settings drift back. A new device, a new account, a major OS update or a family-account change quietly restores defaults. Recheck annually.

Why bother, if ads remain

Because the profile is used for more than choosing which trainers to show you. Behavioural profiles feed price and offer differentiation, credit and insurance adjacent scoring in some markets, and inferences about health, finances, religion and sexuality that you never volunteered. Shrinking the profile shrinks all downstream uses at once — and it removes the unsettling experience of an ad that seems to know about a conversation you had yesterday.

It also pairs with the wider cleanup most people never do: audit your social media history and review your privacy settings in the same sitting.

Frequent questions

Will I see more ads if I opt out? The same number, less relevant. Some people find generic ads easier to ignore, which is a small bonus.

Does incognito mode stop tracking? No. It clears local history after the session; it does not hide you from the sites you visit or from your account when you log in.

Is a VPN a privacy solution here? No. A VPN hides your network location from sites and your traffic from the network. It does nothing about the account you are signed into, which is what personalisation actually uses.

Do the opt-outs affect prices? Sometimes, in both directions. What it reliably does is stop your specific browsing history being the input to what you are offered.

Is any of this worth it if I use Gmail and an Android phone? Yes — the advertising ID deletion and Activity Controls are the two highest-value switches in the whole list, precisely because that ecosystem sees the most.