Here’s a helpful, practical write-up about — what they are, why people use them, how they work, and important caveats.
If you're uncomfortable with save editors, consider these alternatives: renpy save editor
The Ren'Py save editor faces challenges and limitations, including: Ren’Py save editors Here’s a helpful, practical write-up
5.3 Modding, research, and archival workflows Disable achievements (some games check for cheats) Desync
The Ren'Py Save Editor has various applications:
4.2 Decoding and deserialization