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Smart PicksHow to use Base64 Encoder & Decoder
Base64 Encoder/Decoder converts text to Base64 encoding and back. Base64 is used to encode binary data as ASCII text, essential for embedding data in URLs, emails, HTML, and API payloads.
- 1Select Encode or Decode mode using the toggle.
- 2Paste your text (for encoding) or Base64 string (for decoding).
- 3Click the action button to process.
- 4Copy the result with the Copy button.
Common Use Cases
- Embedding small images as data URIs in HTML/CSS
- Encoding API authentication credentials (Basic Auth headers)
- Transferring binary data safely through text-only protocols
- Encoding email attachments in MIME format
Pro Tips
- Base64 increases data size by ~33% โ don't use it for large files.
- For URLs, use URL-safe Base64 (replaces + with - and / with _).
- Base64 is NOT encryption โ it's encoding. Anyone can decode it.
Frequently Asked Questions
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It's commonly used to embed images in HTML/CSS or transmit data in APIs.
Paste your text, click Encode to convert to Base64, or paste Base64 string and click Decode to get the original text.
Yes, completely free with no limits or signup required.
All encoding and decoding happens in your browser. No data is sent to any server.
Yes! The tool fully supports UTF-8 encoding, so you can encode and decode text with special characters, emojis, and non-Latin scripts.
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