lookup> application/x-x509-ca-cert

application/x-x509-ca-cert

application/x-x509-ca-cert is a application media type commonly associated with .der, .crt, .pem extensions.

applicationContent-Type

Quick facts

MIME typeapplication/x-x509-ca-cert

Extensions.der .crt .pem

Charset—

Compressible—

Sourceiana

What is application/x-x509-ca-cert

application/x-x509-ca-cert

application/x-x509-ca-cert is one of the application media types used on the internet. When serving this content over HTTP, set the Content-Type header in the response, for example:

Content-Type: application/x-x509-ca-cert

Related entities: associated extensions include .der、.crt、.pem, and is delivered over HTTP via the Content-Type header, commonly with GET, POST, PUT and PATCH requests.

Related formats:

DER Data & TextCRT Data & TextPEM Data & Text

Relation chain

.der .crt .pemserved as

mime type

application/x-x509-ca-certsent via header

http header

Related extensions

Related MIME types

application/1d-interleaved-parityfec application/3gpdash-qoe-report+xml application/3gpp-ims+xml application/3gpp-mbs-object-manifest+json

Used with

application/x-x509-ca-cert is identified in HTTP by the Content-Type header and is commonly used with these methods:

Related headers

Related methods

Frequently asked questions

What is application/x-x509-ca-cert?

application/x-x509-ca-cert is a application media type used to identify a content format; servers announce it to clients with the Content-Type header.

Which file extensions use application/x-x509-ca-cert?

Extensions such as .der, .crt, .pem are associated with this MIME type.

How do I set the Content-Type for application/x-x509-ca-cert?

Send Content-Type: application/x-x509-ca-cert in the HTTP response.

Sources & standards

Updated 2026-08-18

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