Base64 Encoder & Decoder
Free online Base64 encoder and decoder. Encode text to Base64 or decode Base64 strings instantly. No signup required.
What is Base64 Encoder?
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It is commonly used to embed images in HTML/CSS, encode email attachments, and transmit data safely over text-based protocols.
How to Use This Base64 Encoder
1. Select 'Encode' or 'Decode' mode. 2. Paste your text or Base64 string. 3. Click the action button. 4. Copy or download the result.
Common Errors
Invalid Base64 strings often contain characters outside the Base64 alphabet. Ensure the input length is a multiple of 4 and uses only A-Z, a-z, 0-9, +, /, and = padding.
Frequently Asked Questions
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