Developer tools that just work.

A curated portal of fast, private, browser-based utilities. No accounts. No uploads. Press ⌘K anywhere to jump to a tool.

Try JSON Formatter Get the Chrome extension

Instant: No network round-trips.
Private: Runs in your browser.
Free: No login. No limits.

Filter by tag

Showing tools tagged #json. Clear filter

JSON

JSON Formatter

Pretty-print, minify, and validate JSON with error highlighting.

#json

#format

JSON to Code

Convert JSON to TypeScript, Go, Python, Rust, Swift, Kotlin, C#, Java, Dart, PHP, or Zod — bidirectional, with per-language options.

#json

#codegen

JSON Property Remover / Picker

Omit or pick JSON properties by dot path with wildcard and array support.

#json

#transform

JSON Array Merger (by key)

Merge two JSON arrays of objects on a join key with inner / left / right / outer joins.

#json

#transform

JSON Diff

Semantic, key-aware diff between two JSON documents with added / removed / changed paths.

#json

#diff

JSONPath Tester

Run JSONPath queries with filters and recursive descent against any JSON document.

#json

#transform

JSON Schema Validator

Validate JSON against a JSON Schema with detailed per-path error reporting.

#json

#schema

JSON Flatten / Unflatten

Convert nested JSON to dot-key form and back — perfect for env files and i18n bundles.

#json

#transform

JSON Sort Keys

Sort JSON object keys alphabetically with deep/shallow modes for stable diffs.

#json

#format

JSON Key Renamer

Recursively rename JSON keys with case conversion (camel/snake/kebab) and custom find/replace mappings.

#json

#transform

JSON → JSON Schema

Infer a Draft-07 JSON Schema from a sample document with format detection and required keys.

#json

#schema

JSON Patch (RFC 6902)

Generate add / remove / replace patches between two JSON documents and apply them safely.

#json

#diff

JSON Deep Merge

Recursively merge two JSON objects with configurable array and conflict strategies.

#json

#transform

JSON ↔ Query String

Convert between JSON objects and URL query strings with nested keys and array formats.

#json

#url

JSON Escape / Unescape

Escape JSON or text into a string-safe payload for embedding in code, with quote wrapping options.

#json

#encode

JSON Minify with Stats

Minify JSON and report size reduction, key count, depth, and value-type breakdown.

#json

#minify

JSON Mock Generator

Generate fake records from a JSON Schema with format-aware values via Faker.

#json

#schema

Formatters

XML Formatter & JSON Converter

Pretty-print or minify XML and convert between XML and JSON.

#xml

#json

Converters

YAML ↔ JSON

Convert between YAML and JSON with live validation.

#yaml

#json

CSV ↔ JSON

Convert between CSV and JSON with header detection and delimiter selection.

#csv

#json

Lists

Lines → JSON Array

Convert lines to a JSON array of strings.

#list

#convert