Base64 Encode/Decode
Free online Base64 encoder and decoder. Encode text to Base64 or decode Base64 back to readable text instantly.
About This Free Online Base64 Encode/Decode
Our free online Base64 encoder and decoder lets you convert between plain text and Base64 encoding. Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used for embedding images in HTML/CSS, encoding email attachments, storing binary data in databases, and transmitting data in APIs.
Features of Our Base64 Encode/Decode
- Encode mode — converts text to Base64 format
- Decode mode — converts Base64 back to readable text
- Handles all text encodings and special characters
- Real-time conversion as you type
- Copy result to clipboard with one click
- 100% private — browser-only processing
How to Use the Base64 Encode/Decode
Using this tool is simple and requires no signup or registration. Follow these steps:
- Type or paste your text into the input area.
- Click Encode to convert to Base64 format.
- Click Decode to convert a Base64 string back to plain text.
- Use Copy Result to copy the converted output.
Frequently Asked Questions About Base64 Encode/Decode
What is Base64 used for?
Base64 is commonly used for embedding images directly in HTML or CSS, encoding email attachments (MIME), storing binary data in JSON, and transmitting binary data over text-based protocols like HTTP.
Is Base64 encryption?
No. Base64 is an encoding scheme, not encryption. It converts binary data to text format for safe transmission. Base64 can be decoded by anyone — it does not provide any security or confidentiality.
Why is Base64 longer than the original text?
Base64 encoding increases the data size by approximately 33%. This is because it encodes 3 bytes of binary data into 4 ASCII characters, resulting in a larger output than the input.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.