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JSON Mock Data Generator from Schema
Generate mock JSON from schema instantly. Supports constraints, enums, arrays, and nested objects. Create realistic test data for APIs, UIs.
INI to JSON Converter
Convert INI to JSON in your browser. Supports sections, type inference, repeated keys, lists, and dotted keys. Beautify or minify and export fast and free.
JSON Date-Time Normalizer
Normalize dates and times in JSON. Convert Unix timestamps, ISO strings, and custom formats into a consistent standard. Free, fast, and browser-based.
GeoJSON Viewer and Validator
View and validate GeoJSON online. Interactive map rendering with error checks for points, lines, and polygons. Free, fast, and browser-based.
URL Encode - Decode JSON
Encode or decode JSON for URLs and APIs. Free online JSON URL encoder and decoder with validation, beautify, and export options.
Large JSON Splitter and Merger
Split big JSON files into smaller parts or merge multiple JSON into one. Supports chunking, NDJSON, deduplication, and sorting. Free and browser-based.
JSON Filter and Map Playground
Filter, map, and transform JSON arrays online. Free JSON filter and map playground with custom expressions, sample data, and export options.
JSON Array Utilities Deduplicate - Merge - Group
Deduplicate, merge, or group JSON arrays online. Free JSON array utilities with copy, download, and export options.
JSON Repair and Auto-Fix
Repair broken JSON online. Auto fix common errors, validate, beautify or minify, and export clean JSON in seconds.
JSON Key Sorter and Normalizer
Sort and normalize JSON online instantly. Free JSON key sorter and normalizer tool with beautify, minify, and export options.
NDJSON / JSON Converter
Convert JSON arrays to NDJSON or JSONL and back. Free online tool with formatter, validation, and export options.
JSON Diff - Compare
Compare two JSON files online instantly. Free JSON diff and compare tool with highlights, copy, download, and share features.