Free Base64 Encoder & Decoder Online

Convert text to Base64 and decode Base64 to text instantly. Perfect for developers, API testing, and data encoding. Supports file uploads and downloads.

Encode text/file to Base64

Text to Encode

Base64 Encoded

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode binary data for transmission over text-based protocols like email and HTTP.

Common Use Cases

  • • Embedding images in HTML/CSS
  • • API data transmission
  • • Email attachments
  • • Storing binary data in databases
  • • Basic authentication headers

How to Use Base64 Encoder/Decoder

Encoding (Text to Base64):

  1. 1. Select "Encode" tab
  2. 2. Enter your text or upload a file
  3. 3. Get instant Base64 result
  4. 4. Copy or download the encoded data

Decoding (Base64 to Text):

  1. 1. Select "Decode" tab
  2. 2. Paste Base64 string
  3. 3. View decoded text instantly
  4. 4. Copy or download the result

Privacy & Security:

All encoding and decoding happens in your browser. Your data is never sent to our servers, ensuring complete privacy and security.

Frequently Asked Questions

What is Base64 encoding used for?

Base64 encoding is used to convert binary data into text format for safe transmission over text-based protocols. Common uses include embedding images in HTML, API data transmission, and email attachments.

Is Base64 encoding secure?

No, Base64 is not encryption - it's just encoding. Anyone can decode Base64 data easily. Don't use it for sensitive information without proper encryption.

Can I encode files with this tool?

Yes, you can upload and encode various file types including text files, images, and binary files. The tool will convert them to Base64 format.

What's the difference between Base64 and encryption?

Base64 is encoding (reversible transformation), while encryption is a security measure that requires a key. Base64 is easily reversible, encryption is not without the proper key.

Why does Base64 increase data size?

Base64 encoding increases data size by approximately 33% because it uses 4 characters to represent every 3 bytes of original data.

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