Base64 Encode

About the Base64 Encoder

Base64 is a way of representing arbitrary binary data — an image, an audio clip, a PDF, a compiled binary — using only 64 printable ASCII characters. That makes it safe to embed inside JSON payloads, email bodies, XML documents, HTML data URIs, JWT tokens, basic-auth headers, and anywhere else that expects plain text. The Base64 Encoder converts text or files to Base64 in a single click without uploading your data to any server.

When developers reach for Base64

Common scenarios include embedding a small icon directly inside a CSS file as a data URI to skip an HTTP request, sending a binary attachment through a JSON API that does not support multipart bodies, building the payload of a JSON Web Token, generating an HTTP Authorization: Basic header from a username and password, and storing small files inside environment variables or configuration databases.

How to use it

1. Paste your text or upload a binary file into the input area.
2. Click Encode to produce the Base64 string.
3. Copy the result to your clipboard.

Important: Base64 is not encryption

Encoding hides nothing — anyone with the string can decode it back to the original. Do not use Base64 to protect passwords, API keys, or personal data. It is a transport encoding, not a security mechanism. If you need to keep something secret, use a real cryptographic algorithm such as AES.

Privacy

This tool uses native browser APIs (btoa and FileReader) so encoding happens on your device. We do not see your data, store it, or log it. You can safely process internal tokens, API responses, or confidential attachments without sending a single byte across the network. To reverse this operation, use our companion Base64 Decode tool.

Tamer Baghdadi

CEO / Co-Founder