JSON Crack visualizes and edits JSON, CSV, YAML, and XML as interactive graphs, with formatting, querying, and validation tools.

jsoncrack.com
JSON Crack homepage screenshot

About JSON Crack

JSON Crack is a web-based editor that turns JSON, YAML, CSV, and XML data into interactive tree and graph views. Users can upload a file or URL, or paste data into a text editor, and the visual representation updates as they type. The tool also formats and validates data, converts between formats, generates code types and JSON Schema, and exports graphs as images.

The homepage describes the core editor as free, but it does not list pricing details. Some premium features were moved to ToDiagram.com, which the FAQ says uses the same credentials. The FAQ states that data is processed in the browser and not stored on the site's servers. This is the vendor's own statement and is not an independent guarantee of privacy. The stated size limit is approximately 300 KB, and the actual limit may vary with data complexity and hardware.

Key features

  • Interactive tree and graph views of JSON, YAML, CSV, and XML data
  • Formatting, beautifying, and validation for JSON, YAML, and CSV data
  • Conversion between JSON, CSV, YAML, and XML formats
  • Generation of TypeScript interfaces, Golang structs, Rust serde, and JSON Schema
  • JSON Schema validation and mock data creation
  • Export of graphs as PNG, JPEG, or SVG images
Best for: Developers, data analysts, and others who work with structured JSON, YAML, CSV, or XML data and want a visual view of it.
Good for
  • Shows nested data as a visual tree or graph, which can make structure easier to follow
  • Supports several data formats in one editor
  • Per the homepage, data is processed in the browser rather than stored on the site's servers
Watch out for
  • The stated size limit is approximately 300 KB, and the practical limit may vary
  • Some premium features have moved to ToDiagram.com

JSON Crack at a glance

Type
Online tool
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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JSON Crack FAQ

What size of data can I visualize?
The FAQ says it supports approximately 300 KB. The limit may vary depending on the complexity of the data and the user's hardware.
Can I export the generated graphs?
Yes. Graphs can be exported as PNG, JPEG, or SVG files.
Is my data secure?
The FAQ states that pasted or imported data is processed only in the browser and does not go to the site's servers. This is the vendor's statement and does not guarantee security or privacy.
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