Safari Link Tracking Protection

Safari Just Put a 7-Day Clock on Your ChatGPT Ad Clicks

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OpenAI’s ChatGPT Ads pixel stores the click identifier in a first-party __oppref cookie with a 30-day lifetime. But Safari’s Intelligent Tracking Prevention caps any cookie set by JavaScript at 7 days, and drops it to 24 hours when tracking parameters are present in the URL. For the 26% of mobile shoppers on Safari, the oppref click ID silently expires before most WooCommerce purchases complete, breaking attribution for the fastest-growing ad channel. Server-side capture at landing preserves the click ID in your own infrastructure, beyond ITP’s reach.

Apple’s Safari Blocklist Is Cloud-Managed. Your Backup Parameter Is a Bet.

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Apple’s iOS 26 Link Tracking Protection is not driven by a static list inside iOS. Apple maintains the blocklist server-side via the WebPrivacy service, which updates dynamically and is cached in WebKit. That means any tracking parameter — gclid, fbclid, msclkid, or any 2026 backup like aclid or acid — can be added to the strip list with zero iOS release notes. The only mitigation that survives a future cloud push is server-side click-ID capture: once persisted as WooCommerce order meta, the value is no longer reachable by any Safari update.