Base64 Encoder & Decoder
Encode and decode Base64 instantly with full Unicode support. Base64 turns binary and text data into a safe string of letters and numbers that survives email systems, URLs, JSON payloads and data-URI embedding — which is why it shows up in webhooks, JWT headers, API keys and inline images. Paste your text to encode, or paste a Base64 string to reveal what it contains. Unlike many converters that corrupt Bengali, Hindi, Arabic or emoji characters, this tool handles UTF-8 correctly in both directions. And because it runs entirely in your browser, tokens and secrets stay private.
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How to encode and decode Base64 online for free
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Paste your text into the “Text” panel and click “Encode” to get its Base64 representation.
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Or paste a Base64 string into the “Base64” panel and click “Decode” to read the original text.
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Use the URL-safe toggle when working with tokens that travel inside URLs.
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Copy the result with one click — or swap panels to convert back immediately.
Why use this base64 encoder / decoder tool?
True UTF-8 support
Bengali, Hindi, Chinese, Arabic, emoji — every character encodes and decodes back perfectly, unlike naive converters that output garbage.
URL-safe mode
Switch to the URL-safe alphabet (- and _ instead of + and /) for JWTs, data URIs and query parameters.
Instant, offline conversion
Encoding runs the moment you type or paste. No network requests, so tokens and credentials never leave your device.
Two-way workflow
Decode and encode in either direction with a clean two-panel layout, and copy either side with one click.