Question 1

What is Base64 encoding?

Accepted Answer

Base64 is a way of representing binary data using only 64 printable ASCII characters (A–Z, a–z, 0–9, + and /). It lets you safely transmit or store data — like images, files, or text with special characters — in systems that only reliably handle plain text, such as URLs, JSON, XML, or email.

Question 2

How do I encode text to Base64?

Accepted Answer

Paste or type your text into the input box on the left with "Encode" selected. The Base64 result appears instantly on the right thanks to live mode. Click "Copy" to copy it to your clipboard.

Question 3

How do I decode a Base64 string?

Accepted Answer

Switch to "Decode", paste your Base64 string into the input box, and the original text appears on the right. If the string is not valid Base64, you will see a clear error message.

Question 4

Is this Base64 tool safe and private?

Accepted Answer

Yes. All encoding and decoding happens entirely in your browser using JavaScript — your data is never uploaded to a server. This makes it safe to use even with sensitive text.

Question 5

What is URL-safe Base64?

Accepted Answer

URL-safe Base64 replaces the "+" and "/" characters with "-" and "_" so the result can be used in URLs and filenames without additional escaping. Enable the "URL-safe variant" option before encoding.

Question 6

Does Base64 encryption keep my data secure?

Accepted Answer

No. Base64 is an encoding, not encryption — anyone can decode it. Use it for safe transport and storage of data, not to protect secrets. For confidentiality you need real encryption.

Guides

How to Decode Base64

How to Encode an Image to Base64

URL-Safe Base64 Explained