Details: File format summary

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Properties

Summary
Name	ArcGIS Pro Layer File
Version
Other names
Identifiers	Library of Congress Format Description Identifier: fdd000626 PUID: fmt/2049
Family
Classification	GIS
Disclosure
Description	ArcGIS Pro Layer Files are metadata storage files used in ArcGIS Pro which store all settings for layer file properties. As they are proprietary, they are directly readable only by ArcGIS software. Lyrx files are in a JSON-based text format.
Orientation
Byte order
Related file formats	None.
Technical Environment
Released
Supported until
Format Risk
Developed by	Esri / Esri
Supported by	Esri / Esri
Source	Preservica / Preservica
Source date	21 Jul 2025
Source description	v.121: new PUID.
Last updated	21 Jul 2025
Note	https://pro.arcgis.com/en/pro-app/3.3/arcpy/mapping/layerfile.htm https://www.loc.gov/preservation/digital/formats/fdd/fdd000626.shtml