spk - Synology's Package Format

The Synology Dev Center is the official source of documentation for the spk package format. Synology also publish open source tooling and sample packages. These are the authoritative resources for building Package Center packages.

spk Extensions

Package Origin adds two fields to the spk INFO file:

• package_icon_url
• package_snapshot_url

These are both a space separated list of URLs. URLs are escaped to avoid spaces within individual URLs.

package_icon_url

package_icon_url is a list of space separated URLs that will be passed to Package Center when the package’s thumbnail icon is requested.

Requesting the URL should return a 256px square Portable Graphics Format (.png) formatted image. Prefer a large icon size where available. DiskStation Manager (DSM) appears to cache and resize the image as required.

See Synology’s PACKAGE_ICON_256.PNG file within the Package Structure documentation.

package_snapshot_url

package_snapshot_url is a list of space separated URLs that will be passed to Package Center when the package’s snapshot image is requested.

Requesting the URL should return a screen shot suitable for display within the Package Center’s user interface.

See Synology’s Prepare Screenshots in the Submitting the Package for Approval for the documentation about these images.