Complete guide
How SaveEditor.app works
Dedicated game editors for popular titles, plus a universal tree and hex workbench. No install required — edit in the browser, download a new copy, keep your backup.
Back up, then upload
Copy your original save somewhere safe. Drag the file onto SaveEditor.app (or paste JSON/Base64). We parse it into a navigable tree for structured formats, and keep the raw bytes for hex tools.
Prefer a dedicated editor when available
For Elden Ring, Stardew, Minecraft, Terraria, Hollow Knight, and other supported titles, open the game page and use the dedicated UI — edit runes, money, HP, and flags by name. Dedicated editors stay free.
Use the tree for named fields
Sections sidebar jumps to major groups. Search finds keys and values. Edit inline, watch the Changes panel, and undo with Ctrl+Z. Export a patch JSON if you want a record of edits.
Drop to hex when you must
Hex dump supports 8/16/32-byte rows, jump-to-offset, text decoding (UTF-8/16, Shift-JIS, GB18030, CP949…), entropy map, bookmarks, and a Cheat-Engine-style Value Scanner on the raw buffer.
Download and test
Download writes a new file. Keep the backup until the game loads cleanly. Games with checksums (e.g. Elden Ring) are recalculated on encode when the format supports it.
Every panel, briefly
- Sections — Jump to top-level groups in large trees.
- Tree / Table — Edit named fields; filter editable-only or changed-only.
- Hex Dump — Byte grid, encodings, entropy, jump, bookmarks.
- Value Scanner — Narrow unknown offsets like Cheat Engine (buffer mode).
- Diff / Changes — Every edit with per-field revert.
- Hash / Checksum / XOR — Toolbar tools for fingerprints, fixers, and decrypt pipelines.