Why Encode Text to Base64
Base64 encoding ensures that special characters, line breaks, and non-ASCII characters travel safely across network protocols without alteration.
Frequently Asked Questions
How do I encode plain text to Base64?
Type or paste your text into the input box. The tool encodes your string into standard Base64 or URL-Safe Base64 in real-time.
How does UTF-8 text encoding work in Base64?
Our encoder converts multibyte UTF-8 characters (like emojis, Chinese/Japanese characters, and accented letters) into UTF-8 byte streams before applying the 6-bit Base64 transformation, preventing character corruption.
What is URL-Safe Base64 encoding?
URL-Safe Base64 replaces the '+' character with '-' and the '/' character with '_', while stripping trailing '=' padding so the string can be placed safely in URL query strings and JWT tokens.
Is Base64 an encryption algorithm?
No! Base64 is an encoding format, not encryption. Anyone can decode a Base64 string back into plain text without a key. Never use Base64 alone for sensitive security without proper encryption (e.g. AES or RSA).
How much does text expand when converted to Base64?
Base64 increases the character byte size by approximately 33% because 3 bytes (24 bits) of raw data are represented as 4 Base64 characters.
Can I copy the Base64 result with one click?
Yes, click 'Copy Result' to copy the encoded string directly to your clipboard.