How do I make sure that the vias that I have designed in my PCB through Autodesk Eagle are also shown in my gerber files when I have them manufactured?
When you upload your gerber files to EasyEDA, you can view them on the EasyEDA Gerber Viewer:
https://gerber-viewer.easyeda.com/
https://easyeda.com/selina/Using_EasyEDA_Free_Gerber_Viewer_to_visualize_Your_PCB_Designs-KeqoXx753
or gerbv:
http://gerbv.geda-project.org/
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