Free Base64 Encoder Decoder
Encode and decode Base64 strings instantly with our free tool. Supports text and file encoding with URL-safe options.
- Encode text to Base64 instantly
- Decode Base64 to plain text
- URL-safe Base64 option
- File to Base64 conversion
- Copy output with one click
Frequently Asked Questions
What is Base64 encoding used for?
Base64 encodes binary data as ASCII text, making it safe to transmit through text-based protocols like email, JSON, or URLs. Common uses include embedding images in CSS/HTML and encoding API credentials.
Is Base64 encryption?
No, Base64 is encoding, not encryption. It's easily reversible and provides no security. Never use Base64 alone to protect sensitive data.
Why does Base64 make data larger?
Base64 represents 3 bytes of data as 4 ASCII characters, increasing size by about 33%. This tradeoff ensures compatibility with text-based systems.