Add-on Validator
Validate Bedrock manifest.json files or .mcpack/.mcaddon archives for JSON syntax, required fields, UUID collisions, and version arrays.
Validates Bedrock Edition format_version 1 and 2 add-on manifests.
Validation Diagnostics
Manifest is Valid!
JSON syntax, header fields, unique UUIDs, and version arrays all conform to Bedrock Edition specifications.
How to Use Add-on Validator
- 01.Paste your manifest.json content or upload a manifest.json / .mcpack file.
- 02.Click Validate Add-on to run structural, UUID, and version checks.
- 03.Review actionable error and warning messages to fix any issues.
How It Works
Parses JSON and runs Zod schema checks plus custom rules verifying RFC UUID format, duplicate UUIDs between header and modules, and 3-integer semantic version arrays.
Supported Formats & Outputs
- • JSON (manifest.json)
- • .mcpack
- • .zip
Common Questions about Add-on Validator
Why does Minecraft say "Duplicate pack detected" when importing?
That happens when the header UUID and module UUID are identical, or when you reuse a UUID from an already-installed pack.
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