Featured tools
The strongest starting points for everyday developer utility work.
GUID / UUID Generator
Generate single or bulk UUID v4 values in multiple formats for development and testing.
JWT Decoder
Inspect token headers, payloads, claims and expiration for quick debugging.
Random Token Generator
Create secure random tokens with configurable length and character sets.
IDs & time
Generate identifiers and work with dates, timestamps and durations.
Generators
Create random values, test data and reusable development inputs.
Debugging helpers
Inspect, compare and troubleshoot common development values.
Text Compare
Real word-level diff between two text blocks.
JWT Decoder
Inspect token claims and expiration.
URL Parser Soon
Break URLs into components and parameters.
User-Agent Parser Soon
Inspect browser, device and OS details.
Productivity utilities
Handle quick notes, lists, counters and repetitive tasks.
Quick Notes
Keep temporary notes in your browser.
List Cleaner Soon
Clean, deduplicate and sort lists.
Line Numbering Tool Soon
Add or remove line numbers.
Countdown Timer Soon
Run a simple browser-based timer.
Browse all Developer Utilities 🧰
Search the complete developer utility directory.
Not sure where to begin? 🤔
Start with GUID Generator for IDs, or JWT Decoder for token debugging.