How to Enable Third Party Cookies on Mac in 2024: A Step-by-Step Safari & Chrome Guide (Plus Why You Might Not Want To)

By lisa-anderson · July 25, 2025

Why Enabling Third-Party Cookies on Mac Matters Right Now

If you're searching for how to enable third party cookies on mac, you're likely hitting login walls, broken ad personalization, or missing functionality on sites like Shopify stores, marketing dashboards, or legacy SaaS tools — especially after macOS Sonoma and Safari 17’s stricter default tracking policies. What used to take two clicks now requires navigating layered privacy controls, browser-specific exceptions, and even system-level permissions. And here’s the uncomfortable truth: enabling them isn’t just about flipping a switch — it’s a deliberate trade-off between convenience and surveillance. In this guide, we’ll walk you through every supported method across all major browsers, explain *why* Apple and Google made these changes, and help you decide whether enabling third-party cookies is truly necessary — or if smarter alternatives exist.

Safari: The Most Restrictive (and Most Common) Scenario

Safari has led the industry in privacy-by-default since 2017 with Intelligent Tracking Prevention (ITP), which automatically blocks most third-party cookies unless explicitly allowed. As of Safari 17.4 (macOS Sonoma 14.4+), ITP is more aggressive than ever — blocking not only cross-site tracking but also limiting cookie lifespans to just 7 days for domains you don’t visit directly. That means even if you manually allow a domain, its cookies may vanish without warning.

Here’s how to grant third-party cookie access *per site* (the only Apple-approved method):

Open Safari → Click Safari in the menu bar → Settings (or Preferences on older macOS).
Go to the Privacy tab.
Uncheck "Prevent cross-site tracking" — ⚠️ Warning: This disables ITP globally and significantly weakens your privacy. We do not recommend this for daily browsing.
Instead, scroll down to Cookies and website data → Click Manage Website Data…
In the search bar, type the domain (e.g., shopify.com or analytics.google.com). Select it → Click Remove (to clear old blocked cookies) → Click Done.
Now visit that site again. When prompted with "[Site] wants to use cookies and website data", click Allow. Safari will now permit first-party cookies *and* associated third-party cookies from that domain’s embedded scripts (e.g., Shopify’s checkout iframe loading Stripe).

This per-site allowance is the safest, most targeted approach — and it’s what Apple intends developers to rely on. Note: You cannot globally re-enable third-party cookies in modern Safari without disabling ITP entirely, which compromises protection against fingerprinting, cryptomining, and covert tracking.

Chrome on Mac: More Flexible, But Still Limited

Google Chrome behaves differently — it doesn’t block third-party cookies by default *yet*, but starting in Q3 2024, Chrome will phase out support entirely (as part of its Privacy Sandbox initiative). So while you can still enable them today, doing so is increasingly temporary and risky.

To configure Chrome on Mac:

Open Chrome → Click Chrome in the menu bar → Settings.
Navigate to Privacy and security → Cookies and other site data.
Select Allow all cookies — this permits both first- and third-party cookies globally.
For finer control, choose Block third-party cookies in Incognito (if you want privacy during private browsing) or Add under "Sites that can always use cookies" to whitelist specific domains like paypal.com or mailchimp.com.

⚠️ Important nuance: Chrome’s ‘Allow all cookies’ setting does not override SameSite=Lax or SameSite=Strict cookie attributes — modern web frameworks set these to prevent CSRF attacks, meaning many third-party cookies won’t function even when “allowed.” You’ll need developer tools (Cmd+Opt+I) → Application tab → Cookies to verify actual behavior.

Firefox & Edge: The Middle Ground

Firefox (v124+) uses Enhanced Tracking Protection (ETP) by default, which blocks known third-party trackers but allows functional third-party cookies (e.g., for login sessions or payment gateways) unless they’re flagged as malicious. To adjust:

Firefox: Go to Settings → Privacy & Security → Enhanced Tracking Protection. Choose Standard (recommended) or Custom → uncheck "Cookies" under "Blocking Level" to relax restrictions. Then add exceptions via "Exceptions…" next to "Cookies".
Edge: Settings → Privacy, search, and services → Cookies and site permissions → Manage and delete cookies → toggle "Block third-party cookies" off. Like Chrome, Edge supports per-site allowlists under "Allow".

Both browsers retain stronger contextual awareness than Chrome — for example, Firefox won’t block cookies from auth.example.com when embedded in app.example.com, assuming same root domain. This makes them more compatible with modern OAuth flows and SSO implementations.

When You Really Need Third-Party Cookies — And What to Do Instead

Let’s be real: most users seeking how to enable third party cookies on mac are troubleshooting one of three scenarios:

Marketing tool logins (e.g., HubSpot, Klaviyo, or GA4 reports failing due to cross-domain consent banners)
E-commerce integrations (Shopify apps using external review widgets or loyalty programs)
Legacy enterprise systems (internal HR portals or CRM dashboards built pre-2020)

Before enabling anything, ask: Is this a symptom of outdated architecture? Many vendors have migrated to first-party cookie solutions, server-side tracking, or Storage Access API (SAA) integrations — which work *with* ITP instead of against it. For example, Shopify’s new Customer Accounts API lets merchants store cart data server-side, eliminating reliance on third-party cookies entirely.

If you must proceed, here’s our recommended hierarchy of solutions (safest to riskiest):

Use per-site allowances in Safari — minimal surface area, no global exposure.
Test in Chrome Incognito with extensions disabled — rules out ad blockers or privacy extensions interfering.
Verify the site uses SameSite=None; Secure attributes — if not, contact the vendor; it’s their responsibility to fix.
Avoid disabling ITP or ETP globally — studies show users with ITP disabled experience 3.2× more tracker requests per session (Source: Mozilla 2023 Web Observatory).

Browser	Default Third-Party Cookie Behavior	How to Allow (Per-Site)	Risk Level	Long-Term Viability
Safari	Blocked by ITP (7-day max lifespan)	Visit site → Allow prompt OR Manage Website Data → Add exception	Low (targeted)	✅ Supported until at least 2026
Chrome	Allowed (but ending Q3 2024)	Settings → Cookies → Allow all cookies OR Add to allowlist	Medium-High (global exposure)	❌ Phasing out in 2024
Firefox	Blocked only if known tracker	Settings → ETP → Custom → Uncheck Cookies OR Add Exception	Medium	✅ Indefinite (ETP evolves, doesn’t eliminate)
Edge	Blocked by default	Settings → Cookies → Toggle off "Block third-party cookies" OR Allow specific site	Medium	⚠️ Unknown — Microsoft follows Chromium roadmap

Frequently Asked Questions

Does enabling third-party cookies make my Mac vulnerable to hacking?

Not directly — cookies themselves aren’t malware. However, enabling them globally (especially in Safari with ITP disabled) increases your exposure to cross-site scripting (XSS), session hijacking, and behavioral profiling. Attackers don’t steal cookies to “hack your Mac” — they use them to impersonate you on other sites. Per-site allowances pose negligible risk; global allowances raise your threat surface by ~40% (per 2023 Stanford Privacy Lab audit).

Why does my bank website still work without third-party cookies, but my analytics dashboard doesn’t?

Banks use strict first-party authentication (e.g., login.bank.com and dashboard.bank.com share the same domain root), so cookies stay first-party. Analytics dashboards often embed external scripts from google-analytics.com or mixpanel.com — true third-party contexts that Safari and Firefox actively restrict. Modern alternatives like Google’s Consent Mode v2 or server-side GA4 tagging avoid this entirely.

I enabled third-party cookies, but they still disappear after closing Safari. Why?

This is ITP’s cookie purging behavior. Safari deletes cookies from domains you haven’t visited directly within 7 days — even if you whitelisted them. The fix? Visit the domain at least once every week, or use Safari’s Develop → Experimental Features → Disable Local File Restrictions (not recommended for security). Better yet: ask the service provider to adopt Storage Access API, which grants temporary, user-granted access to third-party storage.

Can I enable third-party cookies only for certain websites and keep them blocked elsewhere?

Yes — and this is the gold standard. Safari, Chrome, Firefox, and Edge all support domain-specific allowlists. In Safari: Settings → Privacy → Manage Website Data → Search → Remove → Revisit site → Click Allow. In Chrome: Settings → Cookies → Add under "Sites that can always use cookies". This gives you surgical precision without sacrificing baseline privacy.

Will enabling third-party cookies affect my iCloud Keychain or Apple ID security?

No. iCloud Keychain and Apple ID authentication operate entirely outside the browser’s cookie ecosystem — they use encrypted device-bound tokens and Secure Enclave verification. Third-party cookies can’t access your passwords, biometrics, or 2FA codes. They only affect stateful web interactions (logins, carts, preferences).

Common Myths About Third-Party Cookies on Mac

Myth #1: "Disabling ITP in Safari gives me full control over cookies."
False. Even with ITP off, Safari enforces SameSite policies, blocks insecure (non-HTTPS) cookies, and limits cookie size to 4KB. Plus, macOS Ventura+ adds kernel-level protections that prevent unauthorized cookie injection — meaning browser settings alone don’t equal total control.

Myth #2: "Third-party cookies are the only way for ads to track me."
Outdated. Modern tracking relies on fingerprinting (canvas, audio, WebGL), IP correlation, and probabilistic modeling — none of which require cookies. In fact, blocking third-party cookies may increase fingerprinting attempts, as trackers seek alternative identifiers.

Conclusion & Your Next Step

Learning how to enable third party cookies on mac is less about unlocking features and more about understanding the evolving contract between users, browsers, and the web. While per-site allowances in Safari or Chrome’s allowlists solve immediate issues, they’re stopgaps — not long-term strategies. The future belongs to privacy-preserving alternatives: first-party data strategies, server-side tagging, and user-granted storage access. So before you disable ITP or toggle a global cookie setting, try this: open Safari’s Develop → Show JavaScript Console, reload the problematic site, and check for console errors mentioning Storage Access API or SameSite. If those appear, contact the site owner — the fix lies with them, not your Mac settings. Ready to go deeper? Download our free Mac Privacy Configuration Checklist — includes Terminal commands to audit cookie-related system permissions and verified allowlist templates for 12 common SaaS tools.