Structure
Objects, arrays, strings, numbers, booleans, and null values are parsed locally.
Local syntax utility
DPP JSON Validator
Check JSON syntax and run source-backed Battery Passport findings against an internal data model.
In-browser utility
Check a JSON payload
What the validator checks
Exact numbers
Numeric inputs that would lose information in the browser are rejected instead of silently changed.
Bounded input
A clear size limit protects browser responsiveness when inspecting files.
Related tools
Context guide
Requirements Checker
Explore source-backed questions and next steps for a product context without receiving a legal verdict.
Local utility
JSON Viewer
Format, inspect, and search JSON locally without treating the data as schema-compliant.