JSON-Arch Logo
JSON-Arch
100% Client-Side Privacy Pledge

Free Online JSON Developer Toolkit

Format, validate, beautify, minify, inspect, and convert JSON payloads instantly in your browser memory. No server uploads. 100% private.

Ready for Input0 lines • 0 B
Original JSON (Input)
•
Formatted JSON (Output)
•

Escaped JSON Recovery

Automatic unescaping for double-escaped strings, log traces, and pasted payload dumps.

100% Client-Side Memory

Your API secrets and production payloads never leave your browser window. Zero network transmission.

Multi-Format Generators

Export JSON directly to CSV spreadsheets, TypeScript interfaces, YAML, XML, and JSON Schema.

Developer Educational Hub

Master JSON Architecture & Specifications

Read our in-depth developer guides covering RFC 8259 syntax specifications, JSONPath operators, common parse errors, and structural comparisons.

JSON Syntax GuideJSONPath ReferenceFix Invalid JSON

Complete JSON Developer Tool Index

→ JSON Formatter→ JSON Validator→ JSON Beautifier→ JSON Parser→ JSON Tree Viewer→ JSON Minifier→ JSON Visual Diff→ Unescape JSON→ JSON to CSV→ JSON to TypeScript→ JSON to YAML→ JSON to XML

Frequently Asked Questions (FAQ)

Is my JSON uploaded to any external server?

No. All JSON formatting, parsing, validation, and conversion operations execute 100% locally inside your web browser memory. Your sensitive API payloads, tokens, and database dumps never touch an external server.

How does the Unescape JSON tool recover stringified JSON?

Our parser pipeline detects escaped JSON strings, single/double backslashes, quote escapes, and embedded log traces, recursively unescaping them safely into valid structured JSON without using dangerous eval() functions.

What is the maximum JSON file size supported?

Since processing runs locally using high-performance JavaScript engines, JSON-Arch can inspect, format, and convert large JSON payloads up to 50MB depending on your device's browser memory.

What is the difference between JSON Formatter and JSON Beautifier?

Functionally, both format unformatted JSON into human-readable structures. JSON Formatter emphasizes customizable tab/space indentation (2-space, 4-space), while JSON Beautifier provides high-contrast syntax highlighting for tree navigation.

How do I fix invalid JSON syntax errors?

Our JSON Validator flags the precise line and column where a syntax error occurs. Common causes include single quotes around keys, trailing commas after the last item, or unescaped quotes inside strings.

Can I convert JSON to TypeScript interfaces or CSV tables?

Yes! JSON-Arch includes dedicated converters to transform JSON arrays into CSV spreadsheets, generate type-safe TypeScript interfaces, or convert payloads into YAML and XML formats instantly.