JSON Crack vs JSONZen

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.

JSONZen is a browser toolkit for formatting, validating, comparing, querying and converting JSON. Its tools also include minification, a tree view, JWT decoding and code generation for TypeScript, Zod, Pydantic v2 and JSON Schema. The site says core tools run in the browser and require no signup. Validation supports JSON Schema drafts 07, 2019-09 and 2020-12, with errors reported by path. Queries can use JSONPath and JMESPath; jq querying is listed as a Pro tool. Share links place their payload in the URL fragment rather than on JSONZen’s servers. Free share links allow up to 32 KB, and Free users can store three snippets locally per browser. Pro adds encrypted cloud-synced snippets, with manual syncing per snippet and a 2 MiB ciphertext limit per snippet. The listed Free plan is free, billed Forever. Pro is listed at $1.00 USD once for 30 days as a launch promotion, with no auto-charge; the pricing note lists paid plans from $5/mo. The CLI is included free.