Is this Base64 encoder free?

Yes, this Base64 encoder and decoder is 100% free with no character limits, no signup, and no hidden charges.

🔐 Base64 Encoder & Decoder - Free Online Base64 Tool

Encode text to Base64 or decode Base64 to text — instantly, free, and 100% private.

Input Chars

Output Chars

Input Bytes

Output Bytes

Input (Plain Text or Base64)

Options

URL-safe Base64 (- and _) Remove padding (=) Wrap output at 76 chars (MIME) Auto strip whitespace on decode

Output (Base64 or Plain Text)

⚠️ Invalid Base64 string. Please check your input.

📎 Encode a file to Base64:

What is Base64 Encoding?

Base64 is a method of encoding binary data into plain ASCII text using 64 characters: A-Z, a-z, 0-9, +, and /. It was designed to safely transmit binary data over text-only protocols like email (MIME) and HTTP.

Base64 is commonly used to embed images directly in HTML/CSS, encode email attachments, and pass data through JSON APIs or URLs. It is not encryption — anyone can decode Base64 back to the original.

How to Use the Base64 Encoder & Decoder

Type or paste your text into the Input box.
Click Encode to Base64 or Decode from Base64.
Toggle URL-safe, no padding, or MIME wrapping options if needed.
Use Copy Output or Download .txt to save the result.

Features

Encode Text: Convert plain text to Base64.
Decode Text: Convert Base64 back to plain text.
Unicode / UTF-8: Handles emoji, Arabic, Chinese, and all Unicode text.
URL-safe: Uses - and _ instead of + and /.
Optional padding removal: Strip trailing = characters.
MIME wrapping: Wrap output at 76 characters per line.
File encoding: Encode any file to Base64 (images, PDFs, docs).
Swap Input / Output: Quickly reverse direction in one click.

Common Use Cases

Web Development: Embed images as Base64 data URIs in HTML/CSS.
APIs: Send binary data in JSON.
Email: Understand MIME-encoded attachments.
Debugging: Decode Base64 payloads from JWTs or HTTP headers.
Data Transfer: Convert files to copy-paste safe strings.

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Frequently Asked Questions

What is Base64 encoding used for?

Base64 is used to encode binary data as text so it can travel safely through text-only systems — like embedding images in HTML, sending email attachments, or transmitting data in JSON APIs.

Is Base64 encryption?

No. Base64 is just encoding, not encryption. Anyone can decode Base64 back to the original text. For real security, use encryption like AES or RSA.

Is this Base64 tool free?

Yes, this tool is 100% free with no character limits, no signup, and no hidden charges.

Is my data safe?

Yes. All encoding and decoding happens locally in your browser. Your text or files are never uploaded or stored on any server.

What is URL-safe Base64?

URL-safe Base64 replaces + with - and / with _, so the output can be safely used in URLs and filenames without escaping.

Does it support Unicode and emoji?

Yes. The tool uses UTF-8 encoding so it handles emoji, Arabic, Chinese, and all Unicode characters correctly.