All-in-One Base64 Tool
Base64 is a binary-to-text encoding scheme used to represent binary data (like images or files) in an ASCII string format. The NoLoginTool Base64 Converter handles both standard text and file conversion securely in your browser.
Common Uses
- Data URIs: Convert small icons or images into a Base64 string to embed them directly into HTML or CSS (e.g.,
data:image/png;base64...), reducing HTTP requests. - API Authentication: Many APIs require credentials to be sent as a Base64 encoded string in the Authorization header.
- Email Transmission: MIME (Multipurpose Internet Mail Extensions) uses Base64 to send attachments via email.
Unicode Support
Many online converters fail when processing emojis or non-Latin characters. Our tool uses advanced UTF-8 encoding logic (btoa(unescape(encodeURIComponent(str)))) to ensure special characters like "❤️" or "你好" are encoded correctly without errors.