All JSON Tools – Free Online JSON Utilities Suite

Format, indent and beautify any JSON. Supports tree view, syntax highlighting, and repair.

Pretty-print raw or minified JSON with customisable indentation.

Instantly beautify compressed JSON into a clean, readable format.

Strip whitespace to compress JSON for production payloads.

Detect syntax errors in real time with precise error messages and line highlighting.

Compare two JSON objects side-by-side and instantly see every addition, deletion and change.

Test JSONPath expressions against any JSON document in real time.

Convert JSON to a JavaScript string literal via JSON.stringify().

Format, validate, and convert JSON Lines (NDJSON) files. Built for LLM datasets and log pipelines.

Escape JSON to a string literal or unescape an escaped JSON string back to readable JSON. Expands embedded JSON strings in API responses.

Generate TypeScript interfaces from JSON automatically.

Convert JSON to Pydantic v2 models for FastAPI and AI pipelines.

Generate Zod schemas for runtime TypeScript validation.

Convert JSON to YAML for Kubernetes, Docker and CI/CD configs.

Export JSON arrays to CSV for Excel and Google Sheets.

Transform JSON to XML for SOAP APIs and legacy system integration.

Convert JSON to TOML for Rust Cargo and Python configs.

Generate SQL INSERT statements from JSON for MySQL, PostgreSQL, and SQLite.

Parse XML including attributes and nested elements into clean JSON.

Automatically generate JSON Schema Draft-07 from any sample JSON.

Convert JSON into LLM-ready prompt templates for AI workflows.

Convert JSON to Token-Optimised Object Notation — a compact LLM-friendly format.

Convert Token-Optimised Object Notation back to standard JSON.

Convert CSV files or text to JSON arrays with header mapping, type inference, and delimiter options.

Import .xlsx spreadsheets, select a sheet, map headers, and export clean JSON without server uploads.

Extract structured text from digital PDFs into JSON. Text-based PDFs only, 100% client-side.

Render JSON arrays as clean tables. Flatten nested objects and export to CSV in one click.

Export formatted JSON as a downloadable PDF. Configure paper size, orientation, and font settings.

Generate and apply RFC 6902 JSON Patch operations. Diff mode and Apply mode with full operation support.

Build and validate JSON-RPC 2.0 request payloads with templates, batch support, and error code reference.

Decode any JWT to inspect header, payload and claims — 100% offline.

Create and sign JSON Web Tokens with HS256 using the browser Web Crypto API.