JSON Crack
jsoncrack.com
What it is
JSON Crack is a free online tool for turning JSON, YAML, CSV, and XML into graph or tree views. Users can supply data through an editor, a file upload, or a URL, then export visualizations as PNG, JPEG, or SVG. It also converts between formats, formats JSON, and validates JSON, YAML, and CSV. Developers can generate TypeScript interfaces, Go structs, Rust serde, and JSON Schema; schema utilities validate schemas, create mock data, and generate schemas from supported data formats. Other tools include JWT decoding, data randomization, jq execution, and JSONPath commands. A VS Code extension provides visualization in the editor, and embedding options include an iframe widget, postMessage API, and jsoncrack-react package. The maker says editor data is processed in the browser and not stored on its servers, while its privacy policy allows usage-data and cookie collection and possible Google Analytics use. The stated capacity is approximately 300 KB, varying with data complexity and hardware. Premium features have moved to ToDiagram.com; prior subscribers can use the same credentials there.
Spec sheet
- Product
- JSON Crack is an online viewer that visualizes JSON, YAML, CSV, and XML data as graphs or trees.Read 4 Oct 2026 · jsoncrack.com
- Audience
- The maker describes the tool as suitable for developers, data analysts, and others working with structured data.Read 4 Oct 2026 · jsoncrack.com
- Privacy
- The privacy policy says the service may collect usage data and use cookies, and may use Google Analytics.Read 4 Oct 2026 · jsoncrack.com
- Advanced tools
- It includes JWT decoding, data randomization, jq execution, and JSONPath commands.Read 4 Oct 2026 · jsoncrack.com
- Code generation
- It can generate TypeScript interfaces, Go structs, Rust serde, and JSON Schema.Read 4 Oct 2026 · jsoncrack.com
- Conversion
- The tool converts between formats, including JSON to CSV, YAML to JSON, and XML to JSON.Read 4 Oct 2026 · jsoncrack.com
- Data handling
- The maker says editor data is processed in the browser and is not stored on its servers.Read 4 Oct 2026 · jsoncrack.com
- Data size
- The maker says it supports approximately 300 KB, with the limit varying by data complexity and hardware.Read 4 Oct 2026 · jsoncrack.com
- Export
- Users can export graph images as PNG, JPEG, or SVG.Read 4 Oct 2026 · jsoncrack.com
- Formatting and validation
- It formats JSON and validates JSON, YAML, and CSV.Read 4 Oct 2026 · jsoncrack.com
- Input
- Users can upload a JSON file, provide a URL, or enter data in the editor.Read 4 Oct 2026 · jsoncrack.com
- Integration
- Developers can embed JSON Crack using an iframe widget, a postMessage API, or the jsoncrack-react package.Read 4 Oct 2026 · jsoncrack.com
- Premium features
- The maker says premium features moved to ToDiagram.com, where prior subscribers can use the same credentials.Read 4 Oct 2026 · jsoncrack.com
- Schema tools
- Its schema tools validate JSON Schema, create mock data, and generate schemas from JSON, YAML, XML, and CSV.Read 4 Oct 2026 · jsoncrack.com
- VS Code
- A VS Code extension lets users visualize JSON directly in the editor.Read 4 Oct 2026 · jsoncrack.com
Plans and prices
Free Free free-forever open-source online tool · approximately 300 KB, depending on data complexity and hardware Read 4 Oct 2026 · jsoncrack.com
Strong points and limits
Strong points
- Visualizes JSON, YAML, CSV, and XML.
- Exports graphs as PNG, JPEG, or SVG.
- Includes jq and JSONPath tools.
- Editor data is processed in-browser, per the maker.
Limits
- Supports approximately 300 KB, depending on data and hardware.
- Privacy policy allows usage-data and cookie collection.
- Premium features moved to ToDiagram.com.
Who it suits
JSON Crack suits developers, data analysts, and others who work with structured data and want visual views, conversion, validation, or schema utilities. Its editor extension and embedding options may help teams integrating visualization into developer workflows.
Verdict
JSON Crack brings visualization, conversion, validation, and developer utilities together in a free online tool. Check the stated data-size limit and privacy terms against the data you plan to use.
Where Specifiction places it
- JSON Tools#15 of 297.7
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