.. include:: /Includes.rst.txt .. _breaking-97550-1651697278: ======================================================================== Breaking: #97550 - TypoScript option config.disableCharsetHeader removed ======================================================================== See :issue:`97550` Description =========== The TypoScript flag :typoscript:`config.disableCharsetHeader` has been completely removed from TYPO3 Core. This option was used to avoid sending HTTP headers of type `Content-Type` to the client. This flag was mainly used to overcome a technical limitation to override the Content-Type information back in TYPO3 v4.x. Impact ====== TYPO3 now always sends the `Content-Type` header to the client in the TYPO3 Frontend. Affected installations ====================== TYPO3 installations having this option enabled via TypoScript. Migration ========= It is not needed to set this option. Even when Extbase plugins return JSON-based Responses, the Content-Type header is already modified. In special cases, when custom headers are required, it is possible to modify the headers via a PHP-based PSR-15 middleware, or via TypoScript with "config.additionalHeaders". .. index:: TypoScript, NotScanned, ext:frontend