Converter Tools

Base64 Encoder

Encode any text string to Base64 format with one click. Used for encoding Basic Auth credentials, embedding binary data in JSON payloads, constructing data URIs, and building JWT components — all processed locally in your browser.

Base64 Encoder

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A tool by Digital Checkmark

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How to Use This Tool

Enter the text you want to encode in the input box
Click "Encode to Base64" to convert it
Copy the Base64 string for use in your API, header, or token

What is Base64 Encoder?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, +, /). It was designed to safely transmit binary data over channels that only support text, such as email (MIME) and HTTP headers. Common uses include encoding HTTP Basic Authentication credentials ("username:password" → Base64), embedding images as data URIs in CSS and HTML, encoding binary payloads in JSON APIs that don't support raw bytes, and constructing the header and payload portions of JSON Web Tokens (JWT). Base64 is an encoding scheme, not an encryption scheme — the original data can be trivially recovered by anyone with the encoded string.

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