Template
{"user": "{{name}}", "isP": "{{boolean}}"}Output
{"user": "Bob Smith", "isP": true}Developer Tools
JSON Mock Generator with Template Placeholders
Fill JSON templates that use double-brace placeholders with mock values such as names, emails, and dates while preserving nested structure. Useful for API and frontend stubs.
JSONMockTesting
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开发工具
JSON Mock Generator
可用变量：
{{uuid}}, {{name}}, {{email}}, {{phone}}, {{date}}, {{number(min,max)}}, {{boolean}}, {{word}} 等待生成
已复制
Use cases
- Generate sample responses before an API is ready
- Render frontend components with placeholder data
- Fill fixed contract shapes for microservice tests
How to use
- Paste a JSON template containing {{placeholders}}
- Review the filled mock result
- Copy it for integration or tests
Example input and output
FAQ
Which placeholders are supported?
Common ones such as uuid, name, email, phone, date, number, boolean, and word, recognized via double-brace syntax.
Does it change the template structure?
No. It only replaces placeholder values and keeps nested objects and arrays intact.
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