NOKM.dev

Every tool you need for day-to-day development

Generate, parse, encode, convert, format, and test — 100% free and easy to use.

All tools run in your browser. No account required.

Your input stays on your device. Processing runs entirely in your browser.

UUID Generator

Generate random UUID v4 identifiers instantly in your browser.

Regex Tester

Test regular expressions against sample text and inspect every match.

JWT Decoder

Decode JSON Web Token headers and payloads without sending data to a server.

Password Generator

Create strong random passwords with customizable character sets.

Color Converter

Convert colors between HEX, RGB, and HSL formats with a live swatch.

Timestamp Converter

Convert Unix timestamps and ISO date strings to local time.

Generate

UUID Generator

Generate random UUID v4 identifiers instantly in your browser.

Password Generator

Create strong random passwords with customizable character sets.

Cron Expression Builder

Build five-field cron schedules for minute, hour, day, month, and weekday.

Parse

JWT Decoder

Decode JSON Web Token headers and payloads without sending data to a server.

URL Parser

Break down any URL into protocol, host, path, query params, and hash.

HTTP Status Codes

Look up standard HTTP status codes by number or message keyword.

Encode

HTML Encode / Decode

Convert special characters to HTML entities and back.

Convert

Timestamp Converter

Convert Unix timestamps and ISO date strings to local time.

Color Converter

Convert colors between HEX, RGB, and HSL formats with a live swatch.

Number Base Converter

Convert integers between binary, octal, decimal, and hexadecimal.

YAML ↔ JSON Converter

Convert between YAML and JSON with a lightweight line-based parser.

Format

SQL Formatter

Format SQL queries with keyword line breaks and basic indentation.

CSS Formatter

Prettify minified CSS with readable braces and line breaks.

Markdown Preview

Preview Markdown as HTML — headers, emphasis, links, and code blocks.

Test

Regex Tester

Test regular expressions against sample text and inspect every match.

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