What is the tt_appInfo cookie?
tt_appInfo is an HTTP cookie associated with TikTok services, found on websites that integrate TikTok elements such as the TikTok Pixel, share buttons, or embedded TikTok video content.
It is generally set by TikTok Inc. / ByteDance, either directly from TikTok domains or indirectly through third-party scripts loaded by the visited site. It appears in the browser once the page executes TikTok's code, often on first interaction or when the widget loads.
What data it stores
As a technical cookie tied to a tracking SDK/pixel, tt_appInfo stores internal information about the application or session context in which the TikTok integration runs (for example, details related to the browser or integration environment). The exact value format is not publicly documented by TikTok and may vary.
Data collected through the TikTok ecosystem, including this cookie, is transmitted to TikTok/ByteDance servers for centralized processing within the advertising platform.
What it is used for
The main purpose is to support TikTok's tracking and advertising functions: recognizing visitors who come from or interact with TikTok content, measuring advertising campaign performance (conversions, attribution), and optimizing ad delivery.
For a site owner, this cookie's presence usually supports a TikTok Pixel integration used for remarketing and reporting conversions from TikTok Ads campaigns.
Does it require consent?
CookieFix classifies tt_appInfo under the marketing (advertising/tracking) category. Under the GDPR and the ePrivacy Directive (as implemented locally, e.g. Law 506/2004 in Romania), this type of cookie cannot be placed before the visitor gives explicit consent.
- The site owner must list the cookie in the cookie policy, with provider, category, and duration.
- The TikTok script must load only after consent is given, not by default.
- Rejecting consent must be as easy as accepting it.
How to block or delete tt_appInfo
A visitor can delete or block tt_appInfo through browser cookie settings (per-site management) or by using tracker-blocking extensions. Being a session cookie, it is cleared automatically when the browser closes.
At the site level, proper blocking means the TikTok script should not execute at all before consent is given. A CMP like CookieFix can automatically block this script until the visitor selects a consent category that includes marketing, preventing the cookie from being set prematurely.
Frequently asked questions
It's a session cookie set by TikTok, used in the context of TikTok integrations (pixel, widgets) for marketing and advertising purposes.
Yes, since it is classified as marketing/tracking, it cannot be set before the visitor explicitly accepts that cookie category.
It's a session cookie, so it is automatically deleted when the browser is closed.
By using a CMP that delays loading TikTok scripts until marketing consent is obtained, or by removing TikTok integrations from the page.