Bob's Multi Tool

JSON Formatter

json formatterjson validatorjson beautifierjson pretty printPrivacy: Browser local

JSON Formatter

Format, minify, validate, inspect, and copy a safe API response report for JSON payloads without sending them to a server.

Input / Output

Start with the tool

Input, output, and copy actions stay in this main surface. Examples and reference checks are separated below.

Copy-ready output

Local session

Input state is saved only in this browser so you can restore the last workspace without an account.

Review after the result

Open examples, checks, and related tools only after the primary input/output flow is done.

Web operations workbench

Extract a JSON field

Format the payload, test a path with wildcards or recursive keys, then keep the shape for code.

3 Tools
  1. 1. JSON

    Format and validate the pasted response before selecting fields.

  2. 2. JSONPath

    Test dot paths, bracket keys, wildcards, and recursive key searches.

  3. 3. JSON TS

    Create a starter type once the field shape is clear.

Format an API response

Clean a pasted JSON payload, inspect paths, then create types or schema checks.

3 Tools
  1. 1. JSON

    Validate and format the payload, then copy a compact API response report.

  2. 2. JSONPath

    Pull the exact field path needed by code or docs.

  3. 3. JSON TS

    Turn the sample shape into a starter interface.

Verify a webhook signature

Generate the HMAC output, copy a safe signature report, and inspect payload shape or encoding before changing webhook code.

3 Tools
  1. 1. Hash

    Generate digest or HMAC output and copy the signature report without raw input or secrets.

  2. 2. JSON

    Check whether the webhook body shape or whitespace changed before signing.

  3. 3. Base64

    Inspect Base64 or Base64URL encoded bodies and signatures when the webhook provider uses encoded values.

Before copying

  • Validate first, then choose formatted or minified output for the next tool.
  • Remove bearer tokens, cookies, customer IDs, and private endpoint values.
  • Compare the output shape with the API contract before copying it into code or docs.

Common failure cases

  • Trailing commas, comments, or single quotes make browser JSON parsing fail.
  • A huge pasted response contains secrets, tokens, or customer rows that should be redacted first.
  • Validate first, then choose formatted or minified output for the next tool.
  • Remove bearer tokens, cookies, customer IDs, and private endpoint values.
  • Compare the output shape with the API contract before copying it into code or docs.
JSON Formatter and Validator - Free Online JSON Tool | bobob.app