Base64 Encode / Decode
Secure utility for converting text to Base64 and vice versa. All data is processed locally inside your browser.
Frequently Asked Questions
Is Base64 considered encryption?
No. Base64 is merely an encoding scheme, not encryption. Anyone can easily decode a Base64 string back to its original form. It provides zero security or data confidentiality.
Does this tool support UTF-8, Cyrillic, and emojis?
Yes, full UTF-8 support is built-in. You can safely encode and decode multilingual text, Cyrillic alphabets, symbols, and emojis without character corruption.
Is my data secure?
Yes, 100% secure. All conversions run locally in your browser memory. No server logging or data retention is performed.
Why am I getting an invalid Base64 error?
This error occurs if the input string contains characters outside the standard Base64 alphabet (A-Z, a-z, 0-9, +, /, =) or has an improper padding length.
Understanding Base64 Encoding and Decoding
Base64 is a binary-to-text encoding scheme that converts binary data (such as images, files, or raw bytes) into a set of 64 ASCII characters. It is widely used in web development, email transmission (MIME), and embedding assets directly into HTML or CSS via Data URIs.
Our online encoder operates entirely client-side using JavaScript. This ensures complete privacy and security, as your text, passwords, or data blocks are never transmitted or stored on any external server.
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Free online tool to encode and decode text to Base64. 100% private, browser-based, full support for UTF-8, Cyrillic, and emojis.
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