Free JSON Converter — No upload, no account, no limits

Convert JSON to
any format.
Private. Instant.

52 free tools — JSON to CSV, Excel, TypeScript, Java, Python, GraphQL and more. Every conversion runs entirely in your browser. Your data never leaves your device.

51

Free tools

14

Countries

376K

Monthly searches

0

Server uploads

Supported output formats

.csv

.xlsx

.ts

.java

.dart

.sql

.yaml

.py

.pdf

.xml

.md

.html

.graphql

.schema

.toml

.env

.ini

.base64

.kt

.go

.swift

.php

.cs

100% client-side processing

Instant conversion

No registration required

Handles large files

Always free

Data & Spreadsheets

Convert JSON to and from CSV, Excel, PDF and SQL — the most searched JSON tools.

Flatten nested JSON to CSV rows with dot-notation headers.

Parse CSV to JSON array — auto-detect delimiter, 4 output modes.

Extract text, tables and metadata from PDF files to JSON.

Export JSON to .xlsx with SheetJS — download instantly.

Generate CREATE TABLE + INSERT statements. 4 SQL dialects.

Parse SQL results, INSERT statements or schema to JSON.

Render JSON as a formatted PDF document.

Read .xlsx/.xls sheets to JSON array — handles multiple sheets.

Convert mysqldump INSERTs or mysql CLI output into JSON.

Code & Languages

Generate data models, classes and structs for every major programming language.

POJO, Lombok @Data or Java Record with Jackson annotations.

JSON to TypeScript

Generate TypeScript interfaces or type aliases from JSON.

Flutter/Dart models with fromJson() and toJson() methods.

Plain class, record, System.Text.Json or Newtonsoft — 4 styles.

Mock JSON, json.dumps snippets, FastAPI/Pydantic/Flask patterns.

Mock JSON, Jackson/Gson/Moshi snippets and library guide.

TypeScript to JSON

3 modes: mock JSON, serialization snippets, library comparison.

Mock JSON, json_encode snippets, Laravel/Symfony/WP patterns.

Mock JSON from C# class, JsonSerializer snippets, JSON Schema.

dict, dataclass, Pydantic v2 or TypedDict — 4 output styles.

Mock JSON from Go struct, json.Marshal snippets, Gin/Echo.

Generate PHP array, stdClass or typed class with PHP 8 features.

data class with @Serializable, Moshi @Json or Gson @SerializedName.

Codable struct, Decodable class, CodingKeys, JSONDecoder snippet.

Go struct with json tags, omitempty, pointer types for nullable.

Mock JSON, Gson/Moshi/kotlinx snippets, Retrofit/Ktor patterns.

Mock JSON, JSONEncoder snippets, URLSession and Alamofire.

Mock JSON from Dart class, jsonEncode snippets.

Data Formats

Convert JSON to and from XML, YAML, TOML, ENV, INI and Base64.

Parse XML to JSON using the browser native DOMParser.

Parse YAML config files to JSON — multi-document support.

Convert JSON objects to well-formed XML with custom root elements.

For Kubernetes, Docker Compose and CI config files.

Standard or URL-safe encoding with JS/Python/Node/Java snippets.

Auto-detect URL-safe. Decode JWT payloads instantly.

Parse Cargo.toml, pyproject.toml and any TOML file.

Parse php.ini, .gitconfig, MySQL config with type inference.

Flatten JSON to KEY=VALUE dotenv, shell export or Docker.

Parse dotenv files with type inference and quote unescaping.

Serialize JSON to TOML with sections and [[array of tables]].

Convert JSON to INI config format with auto-quoting.

Markup & Documents

Convert JSON to and from HTML, Markdown and document formats.

Render JSON as HTML table, list or card — 5 built-in themes.

Extract tables, headings or full DOM structure from HTML.

JSON to Markdown

Generate Markdown tables, lists or documentation from JSON.

Markdown to JSON

Extract tables, front matter and structure from Markdown.

Schema & GraphQL

Generate and convert JSON Schema, GraphQL SDL and API type definitions.

JSON to JSON Schema

Infer JSON Schema Draft-07 or 2020-12 from any JSON sample.

JSON Schema to JSON

Generate realistic mock JSON from a JSON Schema definition.

GraphQL to JSON

SDL to mock JSON, extract response data, SDL to JSON Schema.

JSON to GraphQL

Generate GraphQL types, Input, Query and Mutation from JSON.

JSON Utilities

Essential tools to view, format, transform and compare JSON data.

Escape JSON as a string literal — JS, Python, Java, C# snippets.

Interactive expandable tree — inspect, validate and explore JSON.

Unwrap double-escaped JSON strings — up to 5 layers deep.

Minify · Beautify · Flatten · Sort · Merge · Diff — 5 tools in 1.

Minify or beautify JSON and validate it in one click.

52 tools. Zero uploads.
Your data stays on your device.

Every JSONSwitcher tool runs entirely in JavaScript in your browser. No files are sent to any server — your data never leaves your device. This is not just a privacy promise: there is no server to send data to.

Built with keyword research across 14 countries to cover the searches developers actually make — from json to csv to json to graphql. Every tool is purpose-built.

No account needed

All 52 tools work without registration. No email, no OAuth, no tracking cookies.

Handles large files

Processing happens in your browser — there is no server-side limit. Only your device memory applies.

376K monthly searches

Tools built from real Semrush keyword data across 14 countries — every tool targets real developer searches.

Always free

Funded by non-intrusive display advertising only. No paywalls, no freemium, no upsells.

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