How to know will nuget package work on .NET Core?

This isn't easy right now, unfortunately. There's an issue open on the NuGet Github about adding a filter to the website.

Right now, the best way to tell if a package will work with .NET Core is by examining the frameworks it supports in the Dependencies section.

If .NETStandard is listed, the package supports .NET Core via the .NET Platform Standard:

If a package's Dependencies section doesn't mention .NETStandard, or the Dependencies section is completely empty, it does not support .NET Core:

Setup a .NET Core project in the version you want. I keep 1.1 and 2.0 projects around for futzing with this. Then try and add the nuget to the project.

For instance, ASPOSE will NOT add to a 1.1 project, but will add to a 2.0 project.

Easiest route in the short term until they fix this somehow.

Obviously this is no guarantee it still works but gives you a good idea if its api compat.