Free Online Base64 Encoder & Decoder
Base64 turns binary or text data into an ASCII-safe string, commonly used for embedding data in URLs, JSON payloads, email attachments, and data URIs. Type or paste on either side and the conversion happens instantly. Supports full UTF-8 encoding for international characters, emojis, and multi-byte strings. All processing happens locally in your browser.
Frequently Asked Questions
Similar Utilities
Base64 to Image
Decode Base64 strings back to visual image files and download them to your device.
Image to Base64
Encode JPG, PNG, and WebP images to Base64 strings. Copy data URLs instantly for CSS or HTML.
URL Encoder/Decoder
Encode or decode strings to be safe for uniform resource locators (URLs) client-side.
HTML Encoder/Decoder
Convert special text characters into HTML entities or parse encoded entity blocks back to plain text.
JSON Formatter
Beautify, format, and pretty-print minified JSON with proper indentation. Validate JSON syntax and catch errors instantly.
JSON Validator
Validate JSON syntax instantly with detailed error messages, line numbers, and suggestions to fix common JSON issues.