JNG (JPEG Network Graphics) is a raster format closely associated with PNG . JNG uses the same structure as PNG, stores data in the main JPEG stream, can store the alpha channel as PNG or JPEG, text information, and also supports gamma and color correction. As a rule, it weighs much less than PNG, but as the quality is compressed, the final image should be stored in JNG. JNG was created (in 1999) as part of the MNG format, but exists as separate images. The latest specification was published on January 31, 2001.
| JPEG Network Graphics | |
|---|---|
| Expansion | |
| Format type | |
| Open format ? | Yes |
JNG does not have an official MIME type, but you can use image / x-jng . JNG, like MNG , is not supported by any browser, but it can be seen through a special plugin. JNG is supported in IrfanView and XnView (with plugin). Also supported in the ImageMagick package by the display utility.
Content
Advanced
JNG uses alpha channel stream and main stream. The main stream supports color depths of 8 and 12 bits (per channel), and two color modes: gray scale and color. The alpha channel supports color depths of 1, 2, 4, 8, and 16 bits (if PNG) or 8 and 12 bits (if JPEG), always a gray scale. JNG does not support an indexed palette.
Alternative
You can use HTML5 Canvas to create JPEG images with partial transparency (from PNG or JPEG images). You can also use SVG with masks and embedded JPEG and PNG images.
Links
See also
- PNG
- Mng
- Jpeg