Pro Feature

IAB TCF v2.2 Decoder

Decode Transparency & Consent Framework strings to inspect vendors, purposes, and legal bases.

The IAB Transparency and Consent Framework is the ad-tech industry's standard for signaling consent across the programmatic ecosystem. A TCF string encodes which vendors a user has consented to and for which purposes. Decoding it manually is error-prone and impractical at scale.

ConsentScope's IAB TCF v2.2 Decoder captures the consent string from the active CMP, parses it into readable purposes and vendors, and cross-references the declared legal bases against GDPR requirements. This lets publishers and auditors verify that the consent signal being passed to advertisers actually matches the user's banner choices.

For publishers working with ad exchanges, demand-side platforms, and header-bidding wrappers, the decoder is a critical transparency tool. It turns an opaque Base64-encoded string into evidence that can be reviewed by legal teams and shared with supervisory authorities upon request.

How it works

1

Load a site using a TCF-compliant CMP and let ConsentScope capture the stored TC string.

2

The decoder parses the string into purposes, special purposes, features, vendors, and restrictions.

3

Each entry is mapped to its GDPR legal basis and displayed in a structured table.

4

Export the decoded data or attach it to a compliance report for further review.

Key benefits

Verify vendor claims

Confirm that declared vendors and purposes match the user's actual choices.

Audit consent strings

Inspect TCF payloads without manual Base64 decoding or spreadsheet work.

Support regulatory inquiries

Produce readable evidence of consent string contents when asked by authorities.

Technical transparency

Make the hidden ad-tech consent layer visible to legal and compliance teams.

Who is it for

Publishers

Ensure your ad stack respects the consent signals you collect.

Ad-tech teams

Debug consent string encoding and vendor transmission issues.

Privacy auditors

Validate TCF implementation during publisher audits.

Frequently asked questions

What is the TCF?
The Transparency and Consent Framework is an IAB specification that standardizes how websites collect and transmit user consent choices to advertising vendors.
Which TCF version does this support?
ConsentScope supports TCF v2.2, the current version required by major publishers and ad platforms.
Where is the TC string stored?
It is typically stored in cookies named euconsent-v2 or similar, or in localStorage, depending on the CMP.

Unlock IAB TCF v2.2 Decoder with ConsentScope Pro

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