Binary Plist Editor

Open a bplist00 file, change what you need in a key / value tree, and write it straight back out as binary — or as XML if you prefer a readable file.

Decode and re-encode bplist00
Type-safe editing
Save as binary, XML or JSON
Entirely offline in your browser

Ready to open a file processed locally — nothing is uploaded

Round-trip without surprises

The file is decoded into a typed model, so re-encoding keeps integers, reals, dates, data blobs and dictionary order intact. Only what you edit changes.

When you would use this

Preferences files under Library/Preferences, cached app configuration, game save settings and iOS backup artefacts are usually binary. Editing them normally means macOS plus plutil or Xcode; here it is a drag and drop.

Frequently asked questions

Will macOS still read the file I save?: Yes — the output is a standard bplist00 file with the same structure Apple's own tools write.
Can I convert it to XML instead?: Yes, choose Download → XML plist, or use the dedicated binary-to-XML page.