Utilities

Free utilities for everyday developer work. Every utility is a Hercules app. Open one to use it, or remix it as a starting point for your own app.

EncodingGeneratorsFormattersConvertersSecurityDesignDeveloperText
12 tools

Base64 Encoder & Decoder

Encoding

Convert text to and from Base64.

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Color Converter

Design

Convert between HEX, RGB, HSL, HSV, and OKLCH.

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Cron Expression Builder

Developer

Visually build and explain cron schedules.

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Hash Generator

Security

Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.

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JSON Formatter & Validator

Formatters

Pretty-print, minify, and validate JSON with a tree view.

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JWT Decoder & Encoder

Security

Decode, verify, and encode JSON Web Tokens in your browser.

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Lorem Ipsum Generator

Text

Generate placeholder text by paragraph, sentence, or word count.

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Password Generator

Security

Generate strong, customizable passwords and passphrases.

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QR Code Generator

Generators

Create downloadable QR codes for URLs, text, Wi-Fi, and more.

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Regex Tester

Developer

Test regular expressions with live highlighting and capture groups.

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URL Encoder & Decoder

Encoding

Percent-encode and decode URLs and query strings.

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UUID Generator

Generators

Generate secure, random UUID v4

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