GD image format
From Just Solve the File Format Problem
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** See the [https://libgd.github.io/pages/downloads.html LibGD website] for the latest release. | ** See the [https://libgd.github.io/pages/downloads.html LibGD website] for the latest release. | ||
** [https://github.com/libgd/libgd LibGD GitHub project] | ** [https://github.com/libgd/libgd LibGD GitHub project] | ||
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| + | == Sample files == | ||
| + | * {{DexvertSamples|image/gd}} | ||
== Links == | == Links == | ||
* [https://libgd.github.io/ LibGD website] | * [https://libgd.github.io/ LibGD website] | ||
| − | * [https://libgd.github.io/manuals/2.3.0/files/gd_gd-c.html LibGD website format info | + | * [https://libgd.github.io/manuals/2.3.0/files/gd_gd-c.html LibGD website format info] |
Latest revision as of 18:24, 28 December 2023
GD image format is a raster graphics file format associated with the GD graphics library (a.k.a. LibGD), originally developed by Thomas Boutell.
The GD image format is a special purpose format that can be read very quickly. It is not GD's preferred format -- standard formats like GIF and PNG are preferred.
There are several versions of GD format.
See also GD2 image format.
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[edit] Identification
GD 1.x: There's no easy way to identify this format version.
GD 2.x palette color: Starts with bytes 0xff 0xff, and has 0x00 at offset 6.
GD 2.x truecolor: Starts with bytes 0xff 0xff (v2.0.0-2.0.11) or 0xff 0xfe (v2.0.12+), and has 0x01 at offset 6.
[edit] Specifications
- Refer to the source code comments in modern versions of the gd_gd.c file.
[edit] Software
- GD/LibGD
- GD 1.2, from the Wayback Machine
- https://ftp.mizar.org/packages/gd/ - Various versions
- See the LibGD website for the latest release.
- LibGD GitHub project
