Developer Utilities — Timestamp, UUID, ULID & More
Thirteen browser-based utilities for everyday engineering work: Unix timestamps, UUID, ULID, Nanoid, cron next runs, regex testing, password generation, slugify, number-base conversion, case conversion, text diff, chmod, and Lorem Ipsum. For encoding helpers see Base64.
- Generate timestamps, UUIDs, ULIDs, and Nanoids.
- Parse cron, test regex, diff text, and generate Lorem Ipsum locally.
- Slugify strings, convert cases, and compute chmod bits.
Unix Timestamp
Convert epoch seconds or milliseconds to ISO dates and back — UTC or local timezone.
UUID Generator
Generate UUID v4, v7, or nil with hyphen, case, and bulk count options.
ULID Generator
Generate time-sortable Crockford Base32 ULIDs with Web Crypto — uppercase, monotonic option, bulk count 1–50.
Nanoid Generator
Generate Nanoid-style IDs (URL-safe, alphanumeric, or numeric) with size presets.
Cron Parser
Parse 5- or 6-field cron expressions and list the next fire times.
Regex Tester
Test JavaScript regular expressions with flags, groups, and replace preview.
Password Generator
Generate strong passwords with CSPRNG — length, charset, and ambiguous exclusion.
Slugify
Turn titles into URL-safe slugs with separator, casing, and length options.
Number Base Converter
Convert integers between bases 2–36 with optional byte endianness for hex/bin.
Case Converter
Convert between camelCase, PascalCase, snake_case, SCREAMING_SNAKE, and kebab-case.
Text Diff
Compare two free-text blobs side by side line by line — complements JSON Diff.
Chmod Calculator
Toggle ugo rwx ↔ octal and read ls-style symbolic notation (setuid/setgid/sticky).
Lorem Ipsum Generator
Placeholder text with themes, Plain/HTML/Markdown/JSON formats, and optional hierarchical headings.
Guides
Online Code Beautifier: Readable JS, CSS, HTML and JSON
Learn how to beautify and format your JavaScript, CSS, HTML and JSON code instantly. Complete guide to online and editor-integrated beautification tools.
Online Minifiers vs Build Tools: When to Use Each
Understand the differences between online minifiers and build tools. Learn when to use each approach to optimize your development workflow.
How to Unminify JavaScript for Debugging (Readable Output)
Learn how to unminify minified JavaScript for debugging. Transform unreadable code into formatted, understandable code in just a few clicks with our free tool.