After weeks upon weeks, months of careful development, Add-on JSON Generator is here: the software partnered with Feature Rule Generator and CoreCoder which aims to make common repetitive and time-consuming Add-On creation tasks faster and simpler. https://kaifireborn.itch.io/add-on-json-generator

Feature highlights: 

• Generate fully configurable blocks and items from their texture files only (automatic map colors for blocks and instant items as custom weapons included);  
• Easily convert a folder with skins into a skin pack; 
• Initialize or compile an add-on into .mcpacks/.mcaddon in two clicks; 
•  Mass-generate add-on file canvases; (more on the main webpage)

To be honest, I grew too addicted to create a single item file by hand by now

Note: With AJG being in it's first phase right now, there is a slight possibility a bug/crash issue could've crept trough my fingers. If you notice any (or simply have a question), please report them directly to me (DM). All reported issues will be taken care of in a hotfix in the end of August. Ave! ^~^