Base64 Encoder
Encode text to Base64 instantly with proper UTF-8 support.
🔐 Base64 encodes binary data as text. Common in emails, data URIs, and APIs. Note: it is NOT encryption.
What Is This Tool?
Base64 encodes binary data as ASCII text so it can travel through systems designed for text — email, JSON, HTML, URLs. This tool encodes any text to Base64, with proper UTF-8 support for non-English characters and emoji.
What Base64 Is Used For
- Email attachments (MIME encoding)
- Data URIs — embedding images directly in HTML/CSS
- APIs — sending binary data in JSON
- JWT tokens for authentication
- Storing binary in text-based formats
Base64 Is NOT Encryption
Base64 is an encoding, not encryption. Anyone can decode it instantly — it provides zero security. Never use Base64 to protect sensitive data. Use it only for transport compatibility, then apply real encryption (AES, etc.) separately.
The Size Cost
Base64 output is about 33% larger than the input. Every 3 bytes becomes 4 characters. This is the trade-off for text-safe transport.
Frequently Asked Questions
Why does my non-English text look wrong?
This tool uses proper UTF-8 handling, so accented letters and emoji encode correctly. If you see mojibake, the decoder you're using probably assumes a different character encoding.
About the Base64 Encoder
The Base64 Encoder handles base64 encoderdirectly in your browser. Paste or type your input, and the tool processes it instantly — no upload, no signup, no waiting. It's built for the moments when you need a quick transformation and don't want to leave your workflow.
Because the tool runs client-side, it's fast and private. Your text never touches a server, which makes it safe for sensitive content. The interface is keyboard-friendly and works on any device with a modern browser.
How to Use This Tool
- Paste or type your input into the text area.
- Adjust any options the tool offers.
- The output updates automatically as you type or change options.
- Copy the result using the copy button.
Why Use an Online Tool?
Browser-based tools like this one have a few real advantages over installed software or manual methods:
- No installation. It opens instantly in any browser, on any operating system.
- Private by default. Everything runs locally, so your data stays on your device.
- Always up to date.There's nothing to update — you always get the latest version when you load the page.
- Free and unlimited. Use it as often as you like, with no account and no caps.
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