JSON Tools

One Tool for
All Your JSON Tasks

Format, validate, query, diff, flatten, convert. Zero dependencies. One Python file. Works with pipes.

Get it Free on GitHub Get Pro — $19

10 Commands, One Tool

Every JSON operation you need, without learning jq syntax or installing anything.

Format & Minify

Pretty-print with syntax highlighting, or strip all whitespace for production.

Validate

Check if JSON is valid. Shows exact line and column of errors.

Query

Extract values with dot notation: users[0].name. No jq syntax to learn.

Diff

Compare two JSON files. See additions, removals, and changes instantly.

Flatten / Unflatten

Convert nested JSON to flat dot-notation keys and back. Great for config files.

CSV Convert

JSON arrays to CSV and back. No pandas, no scripts — one command.

See It in Action

      $ python jsonkit.py diff staging.json prod.json

      ~ $.users[0].email:

          old: "test@staging.com"

          new: "real@company.com"

      + $.users[3]: {"name": "New User"}

      - $.debug_info

      $ python jsonkit.py stats api_response.json

      JSON Structure Stats

        Size: 2.3 MB · Depth: 4 · Keys: 18,705

        Types: string (8,241) integer (6,235) null (404)

      $ curl -s api.example.com/data | python jsonkit.py query - "results[0].name"

      Alice Johnson

Free vs Pro

The free version covers daily JSON tasks. Pro adds schema tools, type generation, and bulk processing.

Feature	Free	Pro ($19)
Format / minify / sort keys	Yes	Yes
Validate with error location	Yes	Yes
Dot-notation query	Yes	Yes
Diff two files	Yes	Yes
Flatten / unflatten	Yes	Yes
JSON ↔ CSV	Yes	Yes
Structure stats	Yes	Yes
JSONPath queries ($.store.book[*])	—	Yes
Schema generation & validation	—	Yes
Type generation (Python/TS/Go)	—	Yes
Deep merge with conflict resolution	—	Yes
JSON Patch (RFC 6902)	—	Yes
Bulk directory processing	—	Yes
JSON ↔ YAML	—	Yes
HTML structure reports	—	Yes

One Tool forAll Your JSON Tasks