Base64 Encoder & Decoder
Base64 is a way of representing binary data as plain text using 64 printable characters — commonly used for embedding images in CSS/HTML, encoding data in JWTs, or passing binary data through text-only systems. This tool converts either direction instantly, entirely in your browser.
How to Use Base64 Encoder & Decoder
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Select Mode: Choose between Text Encoding, Text Decoding, or File/Image to Base64 Data URI.
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Input Content: Type or paste raw text, JSON, or select any image/file.
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Configure Format: Toggle URL-Safe Base64 mode (- and _ substitution) for web queries.
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Copy & Export: Click Copy to retrieve your encoded or decoded output instantly.
Frequently Asked Questions
- Is Base64 encryption?
- No — it's an encoding scheme, not encryption. Anyone can decode it; it provides no security.
- Why does encoded text end in =?
- That's padding, added when the input length isn't a multiple of 3 bytes.
- What is URL-Safe Base64?
- Standard Base64 uses + and / which have reserved meanings in URLs. URL-Safe Base64 replaces + with - and / with _, and strips padding characters.
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