Color Palette

Generate a quick palette and copy the CSS value.

Hue

Sat

Light

CSS: hsl(200 100% 60%)

Markdown Preview

Lightweight markdown preview (headings, bold, italics).

Hello

This is live preview.

Inspiration

Quick idea spark for experiments.

What if UI elements behaved like liquids?

JSON Formatter

Validate, prettify, or minify JSON.

Spaces

Regex Tester

Test JavaScript regular expressions.

Matches (6): Try @0matching @4multiple @13words @22hello @29world_123 @35

Timestamp Converter

UNIX seconds/ms ↔ human dates (local & UTC).

UNIX Timestamp

Local: Tue Nov 04 2025 20:16:07 GMT+0000 (Coordinated Universal Time)

UTC: Tue, 04 Nov 2025 20:16:07 GMT

Local Date/Time

UNIX sec: 1762287360

UNIX ms: 1762287360000

Color Contrast Checker

WCAG contrast ratio + pass/fail for normal/large text.

Foreground

Background

Contrast ratio: 15.19

Normal text: AAA

Large text: AAA

Preview Title

This is body text at normal size. It helps you judge readability.

Generator Kit

UUID v4 and customizable password generator.

Base64 Encoder / Decoder

UTF-8 safe.

Plain text

Base64

URL Encoder / Decoder

encodeURIComponent / decodeURIComponent helpers.

Raw

Encoded

Tools