Developer Utilities & Encoding Tools

Clean, client-side, zero-telemetry utilities for software engineers, backend developers, frontend designers, and security testers.

🔍

🔐 Base64 Encoder / Decoder

Encode

Safely encode or decode text strings to and from Base64 with full UTF-8 Unicode support.

Input Text

Base64 Output

SGVsbG8gV29ybGQgMzYwQ2FsYyE=

📋 JSON Formatter & Validator

Format

Prettify with 2-space indentation, minify into a single line, and detect syntax errors.

Raw JSON

Formatted Output

⏱️ Unix Epoch Timestamp

Format

Convert between raw Unix timestamps (seconds & milliseconds) and human-readable UTC / ISO date strings.

Timestamp (Seconds or Milliseconds)

Human Date Conversion

🌐 URL Component Encoder

Encode

Percent-encode and decode URI components for query parameters, APIs, and REST endpoints.

URL String

Result

🔒 Cryptographic Hash (SHA-256)

Crypto

Client-side hash digest generation using the native browser Web Crypto API (SHA-256 & SHA-512).

Input Message

Algorithm

Digest Output

🎫 JWT Token Inspector

Encode

Decode and view JSON Web Token Header & Payload claims without exposing secret keys.

Paste JWT Token (header.payload.signature)

Decoded Payload Claims

🆔 UUID v4 & GUID Generator

Format

Generate cryptographically secure RFC-4122 Version 4 Universally Unique Identifiers.

Generated UUIDs

🎨 CSS Box Shadow Studio

CSS

Fine-tune box shadow offset, blur, and spread with instant CSS output copy.

X Offset (px)

Y Offset (px)

Blur (px)

Spread (px)

CSS Property

box-shadow: 0px 10px 25px -5px rgba(0, 0, 0, 0.5);

🔍 Regex Pattern Matcher

Format

Live regular expression test runner with global match extraction and count.

RegEx Pattern (e.g., [a-zA-Z0-9]+)

Test Text

Matches Found

🌈 Color Format Converter

CSS

Convert colors seamlessly across HEX, RGB, and HSL formats with a visual swatch.

Color Picker / HEX

Color Codes

🛡️ HTML Entity Escaper

Encode

Escape & unescape special characters (&, <, >, ", ') to prevent XSS in HTML.

Raw String

Output