Base64 Encoder & Decoder
Encode plain text or data into RFC-compliant Base64 representation, and decode Base64 strings back to clean UTF-8 text with full Unicode and emoji compatibility.
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme defined by RFC 4648. It represents binary data using a radixed set of 64 standard ASCII characters (A–Z, a–z, 0–9, plus symbols + and /).
- Data Transmission Without Corruption: Text-only transport channels (like email bodies via MIME or legacy HTTP headers) can mangle binary control characters. Base64 guarantees intact transmission.
- Universal UTF-8 Support: Nexoriy uses native Web standards (
TextEncoder/TextDecoder) to support international Unicode characters and emojis without encountering the standard browserbtoacharacter exceptions. - URL-Safe Encoding: Standard Base64 uses characters that have reserved meaning in URLs (
+,/,=). The URL-Safe option replaces them with-and_.
Frequently Asked Questions
Is Base64 an encryption method?
No. Base64 is an encoding format, not encryption. It provides zero cryptographic secrecy or password protection, as anyone can decode Base64 back into its original form instantly.
Why does Base64 increase data size?
Every 3 bytes of raw binary data are represented using 4 Base64 ASCII characters. This results in an approximate 33% increase in data overhead.