Convert PNG to APX

Understanding png and apx file formats

PNG (Portable Network Graphics) is a widely used raster image format known for its lossless compression and support for transparency. It is commonly used for web graphics, digital photos, and images requiring high quality and transparency.

APX files are less common and are typically associated with ArcPad Layer files used in ESRI ArcPad, a mobile GIS (Geographic Information System) application. APX files store map layer information, including symbology and spatial data, and are not standard image files.

How to convert png to apx

Direct conversion from PNG to APX is not straightforward because PNG is an image format, while APX is a GIS layer file. To use a PNG image in ArcPad as an APX layer, you must first georeference the image and then create a new layer in ArcPad or compatible GIS software.

Recommended software for conversion

• ESRI ArcPad: The primary tool for working with APX files. You can import a PNG as a background image, georeference it, and save the layer as an APX file.
• ArcGIS Desktop (ArcMap): Use File → Add Data → Add Data to import the PNG, georeference it, and then export as a layer compatible with ArcPad.
• QGIS: An open-source GIS tool that allows you to georeference PNG images and export them in formats compatible with ArcPad workflows.

Step-by-step conversion process

1. Open your PNG image in ArcPad or ArcGIS.
2. Georeference the image using the georeferencing tools (Customize → Toolbars → Georeferencing in ArcMap).
3. Save or export the georeferenced image as a new layer.
4. In ArcPad, use File → Save Layer As to create an APX file.

Tips and considerations

• Ensure your PNG image has accurate spatial reference information before converting.
• APX files are specific to ArcPad; compatibility with other GIS software may be limited.
• For batch conversions or automation, consider using ArcGIS ModelBuilder or Python scripts with ArcPy.