Base64 Encoder

Encode and decode Base64 strings. Supports text and file input.

Runs in browser Free forever Encoders
Plain text0 bytes
Base64 output

About Base64 Encoder

Base64 Encoder & Decoder translates binary data and text into ASCII characters and vice-versa. Excellent for transmitting binary files in HTML, JSON, or XML formats.

How to Use Base64 Encoder

  1. Choose whether you want to "Encode" or "Decode".
  2. Input your plain text, upload a file, or paste a Base64 string.
  3. The encoded or decoded output displays instantly.
  4. Copy or download the output.

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation.

When is Base64 used?

It is commonly used to embed images directly in HTML/CSS, send email attachments, or transmit data inside JSON payloads safely.

Is my data secure?

Yes, encoding/decoding is performed client-side. Your inputs and files are never sent to a server.