Is Base64 encryption or secure?

No, Base64 is encoding, not encryption. Anyone can decode Base64. It doesn't protect data - it just converts it to a text format. For security, use encryption algorithms like AES, not Base64.

Why does Base64 increase data size?

Base64 encoding increases data size by about 33%. This happens because 3 bytes of binary data become 4 Base64 characters. The tradeoff is compatibility with text-only systems.

Base64 Encoder - Encode Text to Base64

Input Text

Base64 Output

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that converts binary data into a sequence of printable ASCII characters. It uses 64 characters (A-Z, a-z, 0-9, +, and /) to represent data, making it safe for transmission over text-based protocols like email, HTTP, and JSON. Base64 encoding increases data size by approximately 33% but ensures compatibility with systems that only handle text.

How to Use

Enter your text or data in the input field on the left.
Click the 'Encode' button to convert your input to Base64.
The encoded result appears in the output field on the right.
Click 'Copy' to copy the Base64 string to your clipboard.
Use 'Load Sample' to see an example of how encoding works.
Paste the Base64 output wherever you need encoded data.

Why Use This Tool?

Convert any text or binary data to a safe, portable format

Works with Unicode and special characters through proper UTF-8 handling

Instant encoding without server processing - your data stays private

One-click copy for quick integration into your workflow

Essential for embedding binary data in JSON, XML, or email

Useful for basic data obfuscation (not encryption)

Tips & Best Practices

Base64 is encoding, not encryption - it does not secure sensitive data
Use Base64 for data transmission, not for storing secrets or passwords
Encoded data increases by ~33% - consider file size implications
URL-safe Base64 replaces + and / with - and _ for URL compatibility
Decode Base64 data using our Base64 Decode tool when needed
Base64 is commonly used for image embedding in HTML and CSS

Frequently Asked Questions

What is Base64 encoding used for?

Base64 encoding is primarily used to safely transmit binary data over text-based channels. Common uses include: embedding images in HTML/CSS, sending attachments via email (MIME), storing binary data in JSON/XML, encoding API credentials, and transmitting data over protocols that only accept text characters.

Is Base64 encoding secure?

No, Base64 is NOT encryption and does not provide any security. Anyone can decode Base64 data using widely available tools. It only converts the format of data, making it suitable for text transmission. Never use Base64 to protect sensitive information like passwords or API keys.

Why does my encoded output look different than expected?

Our tool properly handles UTF-8 encoding before Base64 conversion. If your input contains special characters or non-ASCII text, the encoded output will correctly represent them. This ensures compatibility with modern web applications and international text.

Can I encode images or files with this tool?

For text data, use this tool directly. For images or binary files, use our Image to Base64 tool which handles file uploads and produces proper Base64 output with data URI prefixes for direct use in HTML and CSS.

What's the difference between standard and URL-safe Base64?

Standard Base64 uses + and / characters which have special meanings in URLs. URL-safe Base64 replaces these with - and _ respectively. Our tool produces standard Base64; for URL use, you may need to replace + with - and / with _.

How do I decode Base64 data?

Use our Base64 Decode tool to convert Base64 strings back to their original text. Simply paste the encoded string and click decode to retrieve your original data. Both encoding and decoding happen entirely in your browser.

Base64 Encode