1 · Input
Paste or open one JSON file
2 MiB · depth 128 · 100k nodes
Privacy boundary: this tool does not send JSON text, filenames, output or hashes. Use public or redacted data when your own policy requires it.
Local JSON workbench
JSON Formatter & Validator
Find the exact broken character, format or minify valid JSON, search bounded paths, and export bytes tied to SHA-256 evidence. No account and no payload upload.
No result yet
Outputs, copies, downloads and receipts stay locked until a current run completes.
INDETERMINATE
Result
Input—
Nodes—
Depth—
Artifacts—
Exact parse context
Current JSON output
| Artifact | Bytes | SHA-256 |
|---|
Bounded path search
No search run.
Bounded tree preview
Receipt JSON and run limits
What PASS means
The complete UTF-8 input matched RFC 8259 grammar, stayed within declared limits, parsed locally and produced hashes for the exact current artifacts.
When it stops
- Malformed syntax returns BLOCK with line, column and byte offset.
- Oversize, over-depth, over-node, duplicate-name, unsafe-integer, binary64 overflow/underflow and unpaired-surrogate interoperability cases return INDETERMINATE with exports locked.
Normalization limit
Formatting normalizes whitespace and JSON number spelling. It is not JSON Schema validation, automatic repair, secret detection or proof that a payload is safe for production.