Thanks for your questions!
- Preset JSON nodes: You can check template flows from the menu (available in the free version as well).
- Mixels handling: Currently, the tool doesn't have dedicated mixel correction features, but you can improve the results by combining several resize nodes. I'm planning to dedicate time to properly address this issue in the future.
- Free version limitations: The free version cannot:
- Save flows
- Change parameter values in nodes (mainly numerical settings)