DevUtilityHub
Free online developer tools to boost your productivity. Test regex patterns, generate cron expressions, compare JSON objects, and streamline your development workflow.
Current Tools
Cron Generator
Generate, validate, and visualize cron expressions with human-readable descriptions and next run times.
Try it now →Regex Tester
Test and debug regular expressions with real-time matching, highlighting, and capture groups.
Try it now →JSON Diff
Compare and visualize differences between JSON objects with syntax highlighting and detailed change tracking.
Try it now →Popular Cron Expressions
Quick access to commonly used cron schedules with detailed explanations and examples.
Popular Regex Patterns
Commonly used regular expressions for validation and text matching.
Email Address →
US Phone Number →
URL/Web Address →
IPv4 Address →
Date (YYYY-MM-DD) →
Strong Password →
Username →
Hex Color Code →
US ZIP Code →
Credit Card Number →
Social Security Number →
UUID/GUID →
URL Slug →
Domain Name →
File Extension →
Popular JSON Diff Use Cases
Common scenarios for comparing and diffing JSON objects with detailed examples.
Compare API Responses →
Compare and diff API response JSON objects
Diff Configuration Files →
Compare JSON configuration files and detect changes
Compare Nested Objects →
Deep comparison of nested JSON objects and structures
Compare JSON Arrays →
Compare and diff JSON arrays with detailed change tracking
Merge JSON Objects →
Merge and combine JSON objects with conflict detection