✦ Free · Client-side · No signup

A toolkit that just works.

13 developer utilities — JSON, JWT, regex, cron, Base64, UUID, hashes, timestamp, color, markdown, lorem ipsum, HTML entities, URL encoding. Every tool runs entirely in your browser. Nothing is sent anywhere. Bookmark-friendly.

Data & Encoding

7 tools

JSON

Format, validate, minify. Live preview.

JWT

Decode header + payload + claims.

Regex

Live tester with match highlights + groups.

Base64

Encode + decode. Standard or URL-safe.

URL Encode

encodeURIComponent / decodeURIComponent.

Markdown

Live MD → HTML side-by-side.

HTML Entities

Encode & → & or decode back.

Generators & Hashes

3 tools

UUID

v4 (random) or v7 (time-ordered). Bulk.

Hash

MD5, SHA-1, SHA-256, SHA-512.

Lorem Ipsum

Words / sentences / paragraphs.

Time / Color / Schedule

3 tools

Timestamp

Unix ↔ ISO 8601 ↔ human, multi-tz.

Color

HEX ↔ RGB ↔ HSL ↔ OKLCH + contrast.

Cron

Build + explain expressions, see fire times.