Base64 Encoder
Encode text to Base64 online free. UTF-8, URL-safe. Browser-based, private.
Input Text
Conversion Options
Specialized Actions
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Base64 Encoder
Encode any string to Base64 for embedding in URLs, JSON, or HTML.
Why it matters: Base64 encoding lets you ship binary-safe text through systems that only allow ASCII.
How to use Base64
- 1 Type or paste your text into the input box above.
- 2 Click Encode to turn text into Base64, or Decode to convert it back.
- 3 Toggle URL-safe mode for links, or UTF-8 for emoji and accents.
- 4 Use JWT / API-key / JSON modes for developer workflows.
- 5 Copy the result or open a specialized tool from the hub below.
Frequently Asked Questions
Base64 converts binary data (like text) into ASCII string format. It's commonly used to embed images in CSS/HTML or transmit data over protocols that don't support binary.
To safely transmit data through systems that only accept text (like HTTP headers, JSON APIs, or XML). It prevents issues with special characters.
Yes. Base64 output is approximately 33% larger than the original input because it uses 6 bits per character instead of 8.
Yes. All encoding happens locally in your browser. Your text is never sent to our servers. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
No. Base64 is encoding, not encryption. Anyone can decode it. Use encryption for confidential data. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
All Base64 Tools
Encode, decode, and inspect Base64 for web, APIs, and JWTs.
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