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In 1996, RFC 2046 specified that the image format used for transmitting JPEG images across the Internet should be JFIF. The MIME type of "image/jpeg" must be encoded as JFIF. In practice, however, virtually all Internet software can decode any baseline JIF image that uses Y or YCbCr components, whether it is JFIF compliant or not.
This is often confused with the JPEG File Interchange Format (JFIF), a minimal version of the JPEG Interchange Format that was deliberately simplified so that it could be widely implemented and thus become the de-facto standard.", while the JFIF page states that JFIF is an extension of JPEG Interchange Format. So, what is it?
As a superset of JPEG/JFIF encoding, it features a compression mode built on a traditional block-based transform coding core. Additionally, there is a "modular mode" for synthetic image content and lossless compression. Optional lossy quantization enables both lossless and lossy compression.
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Contains small bitmap images at multiple resolutions and bitdepths with 1-bit transparency or alpha channel. IFF, ILBM, LBM – IFF ILBM; JNG – a single-frame MNG using JPEG compression and possibly an alpha channel; JPEG, JFIF, JPG, JPEG – Joint Photographic Experts Group; a lossy image format widely used to display photographic images ...
JPEG (Joint Photographic Experts Group) is Working Group 1 of ISO/IEC JTC 1/SC 29, titled JPEG Coding of digital representations of images (working as a joint team with ITU-T SG 16). It has developed various standards, which have been published by ITU-T and/or ISO/IEC.
libjpeg is a free library with functions for handling the JPEG image data format. It implements a JPEG codec (encoding and decoding) alongside various utilities for handling JPEG data. It is written in C and distributed as free software together with its source code under the terms of a custom permissive ( BSD -like) free software license ...
In information and communications technology, a media type, [1] [2] content type [2] [3] or MIME type [1] [4] [5] is a two-part identifier for file formats and content formats.Their purpose is comparable to filename extensions and uniform type identifiers, in that they identify the intended data format.