JPEG XT

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== Format details ==
 
== Format details ==
Like [[JPEG-HDR]], it uses APP11 segments. Unlike JPEG-HDR, the data in those segments apparently uses [[boxes/atoms format]], with the brand "<code>jpxt</code>".
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Like [[JPEG-HDR]], it uses APP11 segments. Unlike JPEG-HDR, the data in those segments uses [[boxes/atoms format]], with the brand "<code>jpxt</code>".
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== Identification ==
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A JPEG XT file contains one or more APP11 segments (see [[JPEG#Application segments]]) whose data begins with ASCII "{{magic|JP}}". Note that the signature is just these two bytes, and has no NUL terminator.
  
 
== Specifications ==
 
== Specifications ==

Revision as of 15:22, 16 December 2017

File Format
Name JPEG XT
Ontology
Released 2016
JPEG XT is a backward-compatible extension of the JPEG graphics format. It offers higher bit depths, high dynamic range, lossless and near-lossless compression, and transparency.

JPEG XT is similar in concept to JPEG-HDR. Its precise relationship to JPEG-HDR is not clear; the formats do not appear to be compatible.

All the critical parts of the standard were published as of 2016-10-15.

Contents

Format details

Like JPEG-HDR, it uses APP11 segments. Unlike JPEG-HDR, the data in those segments uses boxes/atoms format, with the brand "jpxt".

Identification

A JPEG XT file contains one or more APP11 segments (see JPEG#Application segments) whose data begins with ASCII "JP". Note that the signature is just these two bytes, and has no NUL terminator.

Specifications

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