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Cookie Gate
Category: Cookie Types

Social Plug-in Content-Sharing Cookies

Also known as: Social Media Cookies, Social Plugin Cookies, Content-Sharing Cookies
Simply put

These are cookies set by social media platforms when a website embeds features such as share buttons, 'like' widgets, or social login. They connect the site to a user's social media account so that content can be easily shared or so the user can log in, and at the same time they may allow the social platform to recognize and track the user. Because they are typically placed by a third party (the social network) rather than the website itself, they usually require the user's prior consent in most EU jurisdictions.

Formal definition

Social plug-in content-sharing cookies are generally third-party cookies deployed through embedded social network components (for example share, like, or social login widgets) that link the visited site to a user's account on a social platform to enable content sharing, social login functionality, and, in many cases, cross-site tracking of user interactions. As non-essential, third-party cookies used for sharing and tracking, they typically fall outside any 'strictly necessary' exemption and, under the ePrivacy Directive as implemented in most EU jurisdictions, generally require prior informed consent before being placed on or read from the user's device. Where these cookies process personal data, the GDPR additionally governs that processing, and consent obtained for placing the cookie does not automatically satisfy the separate GDPR requirements for a lawful basis; controllers should note that embedding third-party social plug-ins can raise questions of joint controllership and allocation of responsibility between the site operator and the social platform. Scope note: the specific consent obligations, the treatment of logged-in versus logged-out users, and controller/processor relationships depend on facts not covered by this definition and vary by jurisdiction (for example between the EU, the UK, and individual US states); similar tracking technologies delivered via SDKs, pixels, or scripts within social plug-ins may fall under the same rules even though they are not literally cookies.

Why it matters

Social plug-in content-sharing cookies sit at the intersection of two legal regimes that many website operators handle imprecisely. The ePrivacy Directive, as implemented in most EU jurisdictions, governs the placing of and access to these cookies on a user's device, and because they are typically non-essential third-party cookies used for sharing and tracking, they generally require prior informed consent before being set. Separately, where these cookies process personal data, the GDPR governs that processing, and consent obtained for placing the cookie does not automatically satisfy the GDPR's requirement for a lawful basis. Conflating the two can leave a site exposed even when a consent banner is present.

Who it's relevant to

Privacy and data protection officers
DPOs and privacy teams need to map where social plug-ins are embedded and assess whether the resulting cookies are being blocked until consent is captured in EU jurisdictions. They should also consider whether embedding a third-party social plug-in creates joint controllership or an unclear allocation of responsibility between the site operator and the social platform, and document the analysis accordingly.
Legal and compliance counsel
Counsel should treat the ePrivacy consent obligation for placing the cookie and the GDPR lawful-basis requirement for any resulting processing as distinct questions, since satisfying one does not satisfy the other. They should also account for the fact that obligations differ across the EU, the UK, and individual US states, and that guidance and enforcement positions continue to evolve.
Web developers and engineers
Developers implement the technical controls that determine when social plug-ins load. Because these components can set or read third-party cookies and may include pixels, SDKs, or scripts, engineers typically need to gate them behind a consent management platform so they do not fire before valid consent is recorded in EU jurisdictions.
Marketing and social media teams
Teams that add share buttons, like widgets, or social login to campaigns and pages should understand that these features are generally non-essential and consent-dependent in the EU, rather than free to deploy. Coordinating with privacy and engineering colleagues helps avoid embedding tracking technologies that place cookies before consent is obtained.

Inside Social Plug-in Content-Sharing Cookies

Social plug-in
An embedded element from a third-party social media platform (such as a Like, Share, or content-sharing button or widget) placed on a first-party website to enable users to share or interact with content on the social network.
Content-sharing functionality
The feature allowing users to post, recommend, or distribute a page or item to their social media profile or connections, which is the ostensible purpose for which the plug-in is embedded.
Third-party cookies and similar technologies
Cookies, pixels, SDKs, local storage, or fingerprinting techniques set or accessed by the social media provider when the plug-in loads. These non-cookie technologies fall within the same ePrivacy rules on storing or accessing information on a user's device even though they are not literally cookies.
Data flow to the social platform
Information (such as the fact of a visit, page URL, or device and account identifiers) that may be transmitted to the social media provider when the plug-in is rendered, potentially even before the user actively interacts with it.
Dual legal basis under EU law
The placing of and access to the plug-in's cookies or storage is governed by the ePrivacy Directive and its national implementations, while any subsequent processing of personal data (for example profiling or ad targeting) is governed by the GDPR. Consent under one does not automatically satisfy the other.
Potential joint controllership
Depending on the facts, the website operator and the social media provider may share responsibility for certain processing carried out through the plug-in, though the precise allocation is fact-specific and out of scope for this general definition.

Common questions

Answers to the questions practitioners most commonly ask about Social Plug-in Content-Sharing Cookies.

Does embedding a social plug-in like a share button mean the social network is solely responsible for any cookies it sets?
No. This is a common misconception. In most EU jurisdictions, the operator of the website that embeds a social plug-in may be treated as a joint controller with the social network for the collection and transmission of personal data that occurs when the page loads or the user interacts with the plug-in. The precise allocation of responsibility depends on the facts, and the website operator generally cannot assume the social network bears sole responsibility. Both the placing of or access to information on the user's device (governed by the ePrivacy rules) and any subsequent processing of personal data (governed by the GDPR) may need to be addressed by the website operator.
If a social plug-in only sets cookies once a user clicks the share or like button, is prior consent still required?
It depends on how the plug-in is implemented, and the assumption that no consent is needed until a click occurs is often mistaken. Many social plug-ins set cookies or transmit data as soon as the page loads, before any interaction, in which case consent would generally be required beforehand in EU jurisdictions where these cookies are not strictly necessary. Where a plug-in is configured to load its tracking components only after an explicit user click (a so-called two-click or click-to-load approach), that click may form part of a valid consent flow, but whether it satisfies the standard of freely given, specific, informed, and unambiguous consent depends on the surrounding information and design. This entry does not resolve the compliance status of any specific implementation.
How can we embed social sharing buttons without loading third-party cookies before the user consents?
A commonly used technique is a click-to-load or two-click approach, where the site initially displays a static placeholder (such as a plain image or button) that does not contact the social network. The actual plug-in loads only after the user actively chooses to interact with it. This helps prevent cookies and data transmission before a clear affirmative action. Whether such an approach constitutes valid consent depends on the accompanying information provided to the user and on applicable guidance in the relevant jurisdiction. Tools and design patterns can support this outcome but do not by themselves guarantee compliance, and legal judgment on the specific configuration remains necessary.
How should social plug-in cookies be categorized in a consent management platform (CMP)?
Social plug-in content-sharing cookies are generally not strictly necessary and are therefore typically categorized alongside functional, advertising, or social-media categories rather than as essential cookies exempt from consent in EU jurisdictions. The appropriate category may depend on the plug-in's actual purpose and data flows. A CMP can be configured to block these cookies until the relevant category is consented to, but the operator should verify that the plug-in genuinely does not fire before consent, since some third-party scripts can bypass expected controls. Correct categorization is a factual and legal assessment that the CMP configuration alone does not settle.
What information should we give users about social plug-in cookies to support informed consent?
To support informed consent in EU jurisdictions, users generally need to understand which social network is involved, that interacting with or loading the plug-in may transmit data to that provider, the purposes of the cookies (such as content sharing, tracking, or profiling), and where relevant that data may be transferred outside the user's jurisdiction. Because the website operator and the social network may be joint controllers for certain processing, the information provided should reflect that shared role. The specific disclosures required depend on the plug-in and the applicable legal framework, and this entry does not prescribe exact wording.
How should consent for social plug-in cookies be logged and later withdrawn?
Where consent is relied upon, operators are generally expected to keep records demonstrating that consent was obtained, including what the user was shown and the choice they made, in line with record-keeping expectations under the GDPR. Users should also be able to withdraw consent as easily as they gave it, which typically means providing an accessible mechanism to revisit and change cookie preferences; withdrawal should stop further loading of the plug-in and, where feasible, prompt removal or blocking of the associated cookies going forward. The precise logging and withdrawal requirements vary by jurisdiction and by the tooling used, and a CMP can facilitate but does not guarantee compliance with these obligations.

Common misconceptions

Social plug-in cookies only involve data when a user actually clicks the Like or Share button.
In many implementations the plug-in loads and may set or access cookies and transmit information to the social platform when the page renders, before any click. The scope of what is collected on load versus on interaction depends on the specific implementation.
Because the plug-in is provided and controlled by the social media company, the website operator has no consent obligations.
In most EU jurisdictions the operator who embeds the plug-in is generally responsible for ensuring that valid prior consent is obtained before non-essential cookies or storage are placed, and may share responsibility with the provider. Responsibility is not eliminated simply because a third party supplies the code.
Content-sharing plug-ins are functional and therefore exempt from consent.
Under EU law strictly necessary cookies are exempt, but social plug-in cookies typically serve analytics, advertising, or profiling purposes for the social platform and generally require prior consent. Requirements differ under other regimes, such as US state privacy laws that often rely on opt-out rather than opt-in.

Best practices

Block social plug-ins from loading and prevent their cookies, pixels, SDKs, or storage from being set until the user has given valid prior consent, in line with EU requirements; note that opt-out approaches may apply instead under certain US state laws.
Consider privacy-preserving alternatives such as static share links or click-to-load (two-click) implementations that only load the plug-in after an explicit user action.
Inform users clearly, before consent, about which social platforms are involved, what technologies are used, and that data may be transmitted to the provider when the plug-in loads.
Ensure consent obtained is freely given, specific, informed, and unambiguous through a clear affirmative action, avoiding pre-ticked boxes, implied consent, or cookie walls that are widely considered non-compliant in the EU.
Assess and document the roles and responsibilities between your organization and each social media provider, seeking legal advice where joint controllership or cross-border data transfers may arise.
Maintain records of consent and configure your consent management platform (CMP) to govern these third-party technologies, while recognizing that a CMP supports but does not replace legal judgment or guarantee compliance.