Textoolz

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings back to plain text instantly. Free online Base64 conversion tool with full Unicode support.

0 characters0 words
Output will appear here...

Related Tools

URL Encoder / Decoder

{}

Encode special characters for URLs or decode percent-encoded URL strings back to readable text. Free online URL encoding tool.

HTML Entity Encoder / Decoder

{}

Encode special characters as HTML entities or decode HTML entities back to characters. Prevent XSS and display special symbols safely.

Hex to Text / Text to Hex Converter

{}

Convert text to hexadecimal representation or decode hex values back to readable text. Supports multiple separator formats.

Binary to Text / Text to Binary Converter

{}

Convert text to binary (0s and 1s) or decode binary strings back to readable text. 8-bit binary representation with optional separators.

The Base64 Encoder/Decoder converts text to Base64-encoded strings and back again. Base64 encoding represents binary data using 64 ASCII characters, making it safe to transmit through text-based protocols like email (MIME), URLs, and JSON payloads.

This tool handles full Unicode text including emojis, accented characters, and CJK scripts. Encoding wraps your text in a safe ASCII representation, while decoding restores the original content. Common uses include encoding API tokens, embedding small files in HTML or CSS, and debugging encoded data in HTTP requests.

All conversion happens entirely in your browser — your text is never uploaded to any server, ensuring complete privacy for sensitive data like credentials or tokens.

How to Use Base64 Encoder / Decoder

  1. 1Paste or type your text into the input area above.
  2. 2Use the Encode/Decode toggle to select the conversion direction.
  3. 3The output appears instantly — Base64 text when encoding, or plain text when decoding.
  4. 4Click the Copy button to copy the result to your clipboard.

Frequently Asked Questions

What is Base64 encoding?▾
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). It is commonly used to safely transmit data through text-based systems like email, URLs, and JSON.
Does Base64 encoding encrypt my data?▾
No. Base64 is an encoding, not encryption. Anyone can decode a Base64 string back to its original content. It is designed for safe transport, not for security.
Why does Base64 make the text longer?▾
Base64 encoding increases the size of data by approximately 33%, because every 3 bytes of input become 4 Base64 characters. This is the trade-off for using only printable ASCII characters.
Can I encode images or files with this tool?▾
This tool encodes text input. For encoding binary files like images, you would need to read the file as binary data first. This tool is optimized for text-to-Base64 conversion.