Encoding & Decoding Tools

Free browser-based tools for encoding and decoding data. Convert between Base64, hex, URL encoding, HTML entities, and more. All processing happens client-side — nothing is sent to any server.

Base64 to Hex

Decode Base64 strings to hexadecimal format for debugging and data analysis.

Use Tool →

Hex to Base64

Convert hexadecimal strings to Base64 encoding for API integrations.

Use Tool →

URL Encoder

Encode special characters for safe transmission in URLs.

Use Tool →

URL Decoder

Decode percent-encoded URL strings back to readable text.

Use Tool →

QR Code Generator

Generate QR codes from any text, URL, or data string.

Use Tool →

Color Converter

Convert between HEX, RGB, and HSL color formats instantly.

Use Tool →

Image to Base64

Encode images as Base64 data URIs for embedding in HTML or CSS.

Use Tool →

Number Base Converter

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

Use Tool →

HTML Entities

Encode and decode HTML special characters like &, <, >, and ".

Use Tool →

Base58 Encoder

Use Tool →

Base58 Decoder

Use Tool →

About Encoding & Decoding

Encoding transforms data into a specific format for storage or transmission. Decoding reverses that transformation. These tools are essential for web development, API debugging, and data processing.

Base64 is used in email attachments, data URIs, and JWT tokens
URL encoding ensures special characters are safely transmitted in query strings
Hexadecimal is common in debugging, cryptography, and low-level programming
HTML entities prevent XSS and display reserved characters correctly in HTML