Base64 Decoder

Overview

What Is Base64? Base64 is an encoding method that converts binary data into a text format using a set of 64 characters. It is commonly used when data needs to be safely transmitted through text-based systems such as URLs, APIs, emails, HTML, and JSON.

A Base64-encoded string may look like this:

SGVsbG8gV29ybGQh

Decoding it converts the encoded value back into its original content:

Hello World!

How to Decode Base64 A Base64 decoder reverses the encoding process. Simply enter your Base64 string into a decoder, and the tool converts it back into readable text or data.

For example:

Base64: SGVsbG8= Decoded text: Hello When Is Base64 Used? Base64 is commonly used for:

Encoding data in APIs and JSON Email attachments and MIME data Embedding images in HTML or CSS Transmitting binary data as text Storing small pieces of encoded data Working with authentication and web technologies Is Base64 Encryption? No. Base64 is encoding, not encryption. Base64 does not protect data with a password or encryption key, and anyone can decode a Base64 string.

Sensitive information should never be considered secure simply because it has been Base64-encoded.

Base64 Decoder Tool Use a Base64 decoder to quickly convert encoded strings back into their original form. For best results, make sure the input is a valid Base64 string and does not contain unnecessary spaces or characters.