Most of the privacy controls that meaningfully reduce data sharing are not labelled as privacy controls. They are scattered across "personalization," "ads," "activity," "history," and "recommendations" sections, often with positive-sounding names that obscure what they actually do.
This guide walks through the categories of settings most worth checking once and revisiting periodically. The goal is not invisibility or rejection of every modern feature. It is to disable the pieces of data sharing that you are not actively benefiting from, while keeping the features you actually use.
The setting names below stay general because labels and menu paths shift across platforms and product versions. The categories are stable.
Why these settings get overlooked
Three reasons most users never touch them:
- Labelling. The setting that controls ad personalization is rarely called "tracking." It is called "personalized ads," "interest-based advertising," or something more abstract.
- Defaults. Most of these settings ship enabled. There is no prompt asking the user to make a choice — the user has to go look.
- Distribution. The settings live in different places across browser, OS, app accounts, and individual app settings. A complete pass requires visiting several places, which most people will not do in one sitting.
The fix is to pick one or two settings categories per session and work through them, rather than try to do everything at once.
Ad personalization
"Personalized ads" controls whether your activity feeds the ad-targeting profile a platform builds about you. Disabling it does not stop you from seeing ads — it disables one input into how those ads are chosen.
The label varies. Look for settings named:
- Ad personalization
- Personalized advertising
- Interest-based ads
- Ad preferences
Most platforms separate "ads on this platform" from "ads on partner sites." Both are worth toggling off if reducing ad-targeting input is your goal. Effects are usually retroactive — past activity used for profiling is sometimes purged when the toggle is disabled, but not always.
Activity history
Activity history is the log of what you did on the platform: searches, videos watched, things clicked, products viewed. Many platforms use this both for recommendations and for ad targeting.
Two practical levers:
- Disable activity recording for the categories you do not use for recommendations.
- Set retention to a short window (a few months) where the platform supports it, instead of indefinite.
Disabling history usually degrades recommendations. That is the tradeoff. If the recommendations on a particular platform do not matter to you, the cost of disabling is low.
Location history
Location history is a separate setting from real-time location permission. Real-time permission controls whether an app can ask where you are right now. Location history controls whether a persistent log of your past locations is built and retained.
Worth checking:
- Whether location history is enabled by default for any platform account you use.
- Whether the retention is "indefinite" or "auto-delete after N months."
- Whether there are separate toggles for "save my location history" and "use it for recommendations."
Even if you keep location history enabled for a feature you use (commute predictions, photo timelines), shortening retention is a low-cost win.
Search and history retention
Search history can be one of the more sensitive logs you generate. Health questions, financial concerns, life-event searches — all typed into a search bar across years and stored.
What to look for:
- An auto-delete setting for search history. Three months is usually short enough to be safe, long enough to keep the experience normal.
- A separate toggle for using search history to personalize results. Recommendations sometimes work fine without it.
- A way to export and review the existing history, if you want to understand what is stored before you decide what to do with it.
Data sharing with partners
"Partner sharing" or "third-party sharing" settings control whether your data is passed to companies outside the platform you are signed into. The exact categories vary, but typical labels:
- Share data with affiliates
- Share data with partner advertisers
- Allow third parties to use my data for measurement
- Share my activity with partners for personalized experiences
These are usually safe to disable. Affiliate sharing is rarely something the user benefits from in a way they would notice. The disclosure that it is happening is often the only visible effect.
Personalized recommendations
Personalized recommendations are the core feature of most modern platforms — feeds, suggested videos, product picks. They are the reason activity history is collected.
This category is more of a tradeoff than a clear win. Disabling personalization on a platform you use heavily will degrade the experience. Disabling on a platform you barely use removes one more data input for negligible cost.
A reasonable rule of thumb:
- Keep personalization on platforms where you actively benefit from the recommendations.
- Disable on platforms where you tolerate the recommendations or ignore them.
- Periodically reset the recommendation profile on platforms that support it, especially after life-event changes — the inputs collected before the change may no longer reflect what you want.
Notification permissions
Notifications are technically a privacy-adjacent setting. The platform-level toggle controls whether an app can notify you. The in-app toggles control what kinds of notifications it sends.
Most apps default to enabling marketing or "engagement" notifications in addition to actually useful ones. The fix is to enter the in-app notification settings, find the categories, and disable the non-functional ones (announcements, recommendations, "we miss you," streak reminders) while keeping transactional ones (security, deliveries, scheduled events).
Quick review order
A pragmatic order to walk through once, then revisit twice a year:
- Operating-system level: ad personalization toggle.
- Browser level: tracking protection and third-party cookie blocking (covered in detail in Browser Tracking Settings Worth Changing First).
- Per-account: ad personalization on each major platform you use.
- Per-account: activity history retention.
- Per-account: location history settings.
- Per-account: data-sharing-with-partners toggles.
- Per-app: notification categories.
Each of these is a small change in isolation. The combined effect is meaningful, especially at the level of "what gets fed into ad-targeting and recommendation profiles over time."
Summary
These settings will not eliminate tracking. They will not make a platform forget about you. What they do is limit the ongoing flow of unnecessary inputs into systems you do not actively benefit from. That is a smaller goal than total privacy, and a more achievable one. Spending an hour once and twenty minutes twice a year is enough to keep the configuration meaningfully better than the defaults.