What is Base64 encoding used for?

Base64 is used to encode binary data into ASCII characters, allowing safe transmission over channels that primarily support text, such as emails, URLs, or XML/JSON data.

Is Base64 encoding a form of encryption?

No. Base64 is merely a data format representation. It does not provide security or privacy and can be easily decoded by anyone.

Does my data get sent to the server?

No. All encoding and decoding happen locally in your web browser using JavaScript. Your data never leaves your device.

Are there character limit constraints?

Our tool can handle large text payloads. However, extremely large files or strings might slow down your browser tab due to client-side memory limits.

Does this tool support UTF-8 characters?

Yes, our encoder fully supports multi-byte UTF-8 character encoding, ensuring accented characters, symbols, and emojis are processed accurately.

What happens if I try to decode an invalid Base64 string?

If the input string contains invalid Base64 characters or formatting, the decoder will show an error or return empty output.

What is the difference between URL encoding and Base64?

URL encoding replaces unsafe URL characters with percent-escape sequences, while Base64 converts any input text/binary data into a fixed 64-character subset alphanumeric set.

Can I convert images to Base64 here?

This tool is optimized for text string conversions. To convert images, please use our dedicated Base64 Image Converter tool.

What is the size overhead of Base64?

Base64 encoding increases the data size by approximately 33% compared to the original raw binary or text data.

Can I decode Base64 offline?

Yes, once the page is loaded (or cached via PWA), all scripts run locally in your browser, enabling offline encoding and decoding.

Back to Tools

Base64 Encoder/Decoder

Enter Text

Result Output

Base64 Encoder/Decoder

What is Base64 Encoder/Decoder and How to Use It?

How to Use

Frequently Asked Questions

Recommended Tools

URL Encoder/Decoder

HTML Entity Converter

JSON Formatter & Validator

Base64 Encoder/Decoder

What is Base64 Encoder/Decoder and How to Use It?

How to Use

Frequently Asked Questions

Recommended Tools

URL Encoder/Decoder

HTML Entity Converter

JSON Formatter & Validator

Sign In

Create Account