On the surface, these files were standard game saves. But internally, they were encrypted containers holding the sum total of a player's creative output: their "Moon" (the personal creation space), their popit inventory, their collected prizes, and crucially, their unpublished levels. Sony and Media Molecule designed this encryption to protect the integrity of the game’s economy (preventing cheating for rare stickers) and to ensure online stability. However, when the official LittleBigPlanet servers for the PS3 and PS Vita were finally sunsetted in 2021 after a series of security exploits and the natural decline of legacy hardware, millions of player-created levels faced a silent apocalypse.
A versatile, browser-based tool at SaveEditor.online and SaveEditOnline.com . It supports a massive library of formats, including .lsd , and allows you to edit values directly without installing software. .lsd save editor
The most popular (and only dedicated) tool for this task is simply called (sometimes "Torment Save Editor"), created by a modder known as h.d.f. (or community contributors on Nexus Mods and GitHub). On the surface, these files were standard game saves