What is Base64 and why is it used?

Base64 is encoding that converts binary data into readable ASCII text safe for transmission. Used for: email attachments, JSON APIs, data URLs in HTML, authentication tokens (Basic Auth), and protecting data in transit. Encoding/decoding is reversible and lossless.

How does Base64 encoding work?

Base64 encodes data using 64 safe characters (A-Z, a-z, 0-9, +, /). Each 3 bytes become 4 Base64 characters, increasing size by 33%. Use encoder for: API authentication, data transmission, embedding images in HTML. Verify by decoding result—should match original.

Can I encode/decode binary files, images, or documents?

Yes! Encode any text data including UTF-8, Unicode, special characters, and code. For binary files, convert to text first or use file encoding tools. Perfect for: embedding images as data URLs, encoding credentials, API tokens, configuration data.

Is my data stored or logged during encoding?

No! All encoding/decoding happens locally in your browser. Data never uploads to servers. Zero logging, zero tracking. Verify by checking browser dev tools network tab. Perfect for encoding sensitive credentials, API keys, and private data.

What is the character/file size limit for Base64 encoding?

Can encode from few bytes to several MB depending on browser memory. Most conversions instant. Very large files take 1-5 seconds. Test by encoding gradually if processing huge documents. Works with any character encoding (UTF-8, ASCII, Unicode).

Base64 Encode / Decode

Encode or decode Base64 text with Unicode support.

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Input

0 characters

Output

0 characters

JSON Formatter

Beautify or minify your JSON data.

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Convert JSON data into CSV format instantly.

HTML Minifier

Minify HTML by removing unnecessary whitespace.

CSS Minifier

Minify CSS code to reduce file size and improve load speed.

SIMPLE PROCESS

How It Works

Complete your task in simple, easy-to-follow steps.

STEP 1

Paste Text

Paste text to encode or decode.

STEP 2

Encode or Decode

Choose Base64 encode or decode.

STEP 3

Copy or Download Output

Copy the result or download it as a text file.

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