https://haroldo-ok.itch.io/pocket-platformer-to-sms
Low and behold, the wait is (almost) over, a PP-to-SMS converter. Internally, it uses haroldo-ok's previous project Pocket Platformer Exporter, which just exports JSON and tiles; however, it seem like wish for a platformer tool for retro consoles is pretty much coming true.
Anyhow, go check it out and give it a test drive. Be sure to report bugs on the github that is linked on the PP-to-SMS converter itch page ting.