Edit primitive values in your Doki Doki Literature Club Ren'Py save — gallery/CG unlocks, music room flags, and other cross-save "persistent" data — all in your browser.
persistent (no file extension) — not a .save slot file. Everything runs in your browser — nothing is uploaded anywhere.persistent.* data (achievements, gallery unlocks, settings) in one file per game, shared by every save slot — it's not inside your .save files. Find it at ~/Library/RenPy/<game>/persistent (macOS), %AppData%\RenPy\<game>\persistent (Windows), or ~/.renpy/<game>/persistent (Linux) — it sits right next to your .save files, with no file extension.persistent.<gallery_flag_name>Named per image/gallery entry — only shows up if it's already a plain true/false flag in your save.
persistent.<music_flag_name>persistent.<completion_flag_name>e.g. whether the game has been completed once, end-of-game flags.
persistent.<counter_name>Built in Ren'Py. Write support is intentionally limited to primitive "persistent" values, and only when the rest of the save is free of custom Python objects — most real saves will load as view-only.