Free ULID Generator - UUID Alternative with Time Sorting

What is ULID?

ULID (Universally Unique Lexicographically Sortable Identifier) is a modern UUID alternative that combines unique identification with time-based sorting capabilities. This ULID generator creates 26-character identifiers that are lexicographically sortable and URL-safe.
Key advantages:

Time-ordered: Later ULIDs sort after earlier ones
Compact: 26 characters vs UUID's 36 characters
URL-safe: No special characters requiring encoding
Case-insensitive: Reduces manual handling errors

Core Features

🚀 Batch Generation

Generate up to 100 ULIDs simultaneously for bulk operations and testing scenarios. Perfect for distributed systems requiring multiple unique identifiers.

⚡ Instant Results & Privacy Protection

Real-time ULID generation with millisecond precision
All processing happens in your browser - no data uploaded
One-click copy to clipboard functionality
Download results as text files

📋 Multiple Output Formats

Raw Format: Plain ULID strings for direct integration
JSON Format: Structured output for API development

Technical Specifications

ULID Structure (128 bits total)

01AN4Z07BY      79KA1307SR9X4MV3
|----------|    |----------------|
Timestamp       Randomness
(48 bits)       (80 bits)

Character Set: Crockford's Base32 encoding
0123456789ABCDEFGHJKMNPQRSTVWXYZ

Excluded Characters

Excludes I, L, O, U to prevent confusion

Primary Use Cases

Database Primary Keys: Sortable keys for distributed databases
API Identifiers: URL-safe resource identifiers for REST APIs
Event Logging: Chronologically ordered log entries
Microservices: Independent unique ID generation
Mobile Apps: Offline-first applications with later synchronization

How to Use This ULID Generator

Set Parameters: Choose quantity (1-100) and output format
Generate: Click "Refresh" to create new ULIDs with current timestamp
Copy/Download: Use individual copy buttons or download all results

Why Choose Our Free ULID Generator?

✅ Free Online Tool: No registration or payment required
✅ Privacy-First: All generation happens locally in your browser
✅ Mobile-Friendly: Responsive design works on all devices
✅ Developer-Ready: Multiple formats for easy integration
✅ Professional Quality: Follows official ULID specification

Frequently Asked Questions

Q: How does ULID compare to UUID? A: ULID provides lexicographic sorting capabilities and is more compact (26 vs 36 characters) while maintaining the same 128-bit uniqueness as UUID.
Q: Are ULIDs suitable for database primary keys? A: Yes, ULIDs are excellent primary keys, especially for distributed systems where time-ordered sorting is beneficial.
Q: What's the maximum batch size? A: Generate up to 100 ULIDs per batch. For larger quantities, run multiple batches.
Generate secure, sortable ULIDs instantly with our free online ULID generator!