Base64 Encoder

Summary

Paste text or upload a file and get the Base64-encoded string instantly.

How it works

1. Paste text into the input area or click "Choose file" to upload a binary file.
2. Select Standard or URL-safe alphabet as needed.
3. Click Encode.
4. Copy the Base64 output with the Copy button.

Use cases

• Embedding images as data URIs in CSS
• Encoding credentials for HTTP Basic Auth headers
• Passing binary data in JSON API payloads

Frequently Asked Questions