★ Free Developer Tool
Base64 Encode & Decode
Encode text to Base64 or decode Base64 back to text, with full Unicode support.
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Runs entirely in your browser. Your files and text are never uploaded to our server.
About this toolBase64 Encode & Decode converts text to and from Base64, the format used in email attachments, data URIs and many APIs.
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Base64 Encode & Decode converts text to and from Base64, the format used in email attachments, data URIs and many APIs.
More about Base64 Encode & DecodeHow to use, good to know & FAQ
How to use Base64 Encode & Decode
- Paste text or Base64.
- Click "Encode" or "Decode".
- Copy the result.
Frequently asked questions
Is Base64 encryption?
No. Base64 is an encoding that anyone can reverse. Never use it to protect secrets.
What is URL-safe Base64?
It replaces + and / with – and _ so the result can be used in URLs.
When to use Base64 Encode & Decode
- Decode Base64 strings from APIs or emails
- Encode credentials for HTTP Basic auth testing
- Inspect data URLs
- Convert text for safe transport
📘 Read the guide: JSON Formatting & Validation: A Beginner’s Guide With Examples