Base64 Encoder
Encode and decode text to and from Base64 format.
About Base64 Encoder
Encode and decode Base64 strings instantly with our free online Base64 tool. Convert text to Base64 for APIs, data URIs, and authentication headers, or decode Base64 back to readable text.
Base64 encoding is used everywhere in web development — from embedding images in CSS to encoding credentials in HTTP Basic Auth. This tool handles UTF-8 text correctly, including emoji and international characters.
Everything runs in your browser. No data is uploaded or stored.
Key Features
- Encode text to Base64
- Decode Base64 to plain text
- Full UTF-8 support including emoji
- One-click copy
- Instant conversion as you type
How to Use
- 1Choose Encode or Decode tab.
- 2Paste your text or Base64 string.
- 3Output updates automatically.
- 4Click Copy to use the result.
Common Use Cases
Frequently Asked Questions
What is Base64 encoding used for?+
Base64 converts binary data to ASCII text. It's commonly used in email, data URIs, API authentication, and storing binary data in JSON.
Can I encode files with this tool?+
This tool encodes text input. For file encoding, read the file content as text first or use a dedicated file-to-Base64 tool.
Is Base64 encryption?+
No. Base64 is encoding, not encryption. Anyone can decode Base64 strings easily.
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