JSON Tools

Work with JSON data efficiently: format, validate, compare, visualize tree structures, and convert JSON with powerful browser-based tools.

12 tools available

Data Tools 9

Data Converter Hub

Convert CSV, JSON, XML, YAML, Excel and SQL INSERT statements both ways. Fast, private, offline conversion in your browser - nothing is uploaded.

YAML-JSON Converter

Convert YAML to JSON and back, including multi-document Kubernetes manifests. Upload files or paste data; all processing stays in your browser.

JSON Tree Viewer

Explore JSON as a collapsible tree, run JSONPath queries, search keys/values, and see depth, size & key-count stats. Download filtered results. Free.

CSV-SQL Converter

Convert CSV to SQL INSERT and CREATE TABLE or SQL back to CSV in your browser. Pick MySQL, Postgres, SQLite or SQL Server dialect with batch multi-row inserts.

XML-JSON Converter

Convert XML to JSON and JSON to XML online, in your browser, no upload. Keeps attributes, CDATA, leading zeros and nested structures intact.

JSON Path Finder

Free online JSONPath tester and evaluator. Filter, slice, recursive-descent and extract JSON fields, returning values, canonical paths or JSON Pointers.

JSON Diff Checker

Structural deep compare for two JSON objects: pinpoints added, removed and modified keys plus per-index array element changes with full dot-path navigation.

JSON to CSV

Convert JSON to CSV online free. Flatten nested JSON, pick any delimiter, add a UTF-8 BOM for Excel, and download a spreadsheet-ready CSV in your browser.

CSV to JSON

Convert CSV or TSV to JSON in your browser: array of objects, array of arrays, or NDJSON, with type inference, custom delimiters and nested dot-notation keys.

Developer Tools 3

Generators 1

Manifest Generator

Build a Web App Manifest and audit PWA installability live: checks 192/512 PNG and maskable icons so your app passes Lighthouse and shows the install prompt.

Utilities 2

JSON to TypeScript

Free online JSON to TypeScript converter. Paste any JSON, get strict interfaces with nested objects, arrays, and string-literal unions. Private, in-browser.

OpenAPI Spec Validator

Validate an OpenAPI 3.x JSON or YAML spec online: lint structure, summarize endpoints, detect broken $ref, catch missing 401/403 and undeclared params. Free.