Color / Password / Timestamp / Cron / CIDR / Diff Utilities

Developer utilities: HEX ↔ RGB color converter, password generator (crypto.getRandomValues), Unix timestamp converter (auto-detects s/ms/µs), Cron expression parser, IPv4 CIDR calculator, text diff (Monaco DiffEditor).

Color Converter

Online color format converter: HEX to RGB, RGB to HEX, HSL conversion. Supports alpha channel (transparency). Essential tool for designers and frontend developers.

Password Generator

Online secure password generator: customizable length, uppercase, lowercase, numbers, symbols. Uses crypto.getRandomValues for true randomness. Generated locally, never stored.

Timestamp Converter

Online Unix timestamp converter: auto-detects seconds, milliseconds, microseconds. Supports Local, UTC, ISO 8601, and relative time. Essential for developers debugging timestamps.

Cron Parser

Online Cron expression parser: input a 5-field Cron (minute hour day month weekday) and get a human-readable description. Supports step values, ranges, lists. Essential for scheduled task debugging.

CIDR Calculator

Online IPv4 CIDR calculator: input IP/prefix (e.g., 192.168.1.0/24) to calculate network address, broadcast address, subnet mask, host range, and total hosts. Essential for network engineers.

Text Diff

Online text diff comparison tool: uses LCS algorithm to compare two texts line by line, highlighting additions, deletions, and modifications. Powered by Monaco DiffEditor with syntax highlighting.

Base Converter

Online number base converter: convert between binary, octal, decimal, and hexadecimal.

Word Counter

Online text statistics tool: real-time count of characters, words, lines, sentences, and paragraphs.

Case Converter

Online text case converter: UPPER CASE, lower case, Title Case, camelCase, snake_case, kebab-case, CONSTANT_CASE.

QR Code Generator

Online QR code generator: enter URL or text to create a QR code instantly. Customizable size and error correction. Download as PNG. Generated locally in browser.