JGW File Documentation


Feature Value
File Extension .jgw
Format Type Text
Usage Georeferencing JPEG images
Number of Lines 6
Line 1 Pixel size in the x-direction in map units/pixel
Line 2 Rotation about the y-axis
Line 3 Rotation about the x-axis
Line 4 Pixel size in the y-direction in map units, typically negative
Line 5 X-coordinate of the center of the upper left pixel
Line 6 Y-coordinate of the center of the upper left pixel
Associated Image Format JPEG
MIME Type text/plain
Character Encoding ASCII
Map Units Can vary (e.g., meters, feet)
Rotation Values Usually zero if north up
Decimal Separator Period (.)
File Pair Required Yes (with respective JPEG file)
Primary Use GIS Software
Editable Yes, with a text editor
Creation Method Manually or via GIS software export function
Data Stored Georeferencing information
Compatibility Widely supported by GIS applications