Developer Tools
Essential utilities for modern software development, DevOps, and API testing.
JSON Validator
Validate and format JSON data. Check syntax errors, view structure, and beautify JSON for debugging and development.
Validate JSONCron Expression Generator
Build cron expressions visually with an easy-to-use interface. Generate schedule patterns for task automation.
Build CronRegex Builder
Create and test regular expressions with real-time matching. Get explanations for regex patterns and debug complex expressions.
Build RegexUnix Permissions Calculator
Calculate chmod permissions in numeric and symbolic format. Understand Unix file permissions for secure server management.
Calculate PermissionsHTTP Header Parser
Parse and understand HTTP headers. Get detailed explanations of common headers for debugging web requests.
Parse HeadersJWT Generator
Generate JSON Web Tokens with custom payloads. Create JWTs for authentication testing and API development.
Generate JWTAPI Response Mocker
Create mock JSON API responses for testing. Generate sample data for users, products, posts, and error responses.
Mock APIWebhook Tester URL Generator
Learn how to test webhooks with dedicated testing services. Understand webhook debugging and request inspection.
Test WebhooksEnvironment Variable Generator
Generate .env file templates for various frameworks. Quick-start configuration for Flask, Node.js, Docker, and more.
Generate .envDocker Compose Validator
Validate docker-compose.yml files for syntax and structure. Check for common issues before deployment.
Validate Compose