Base64 Encode/Decode
Convert text to Base64 or decode Base64 to text. Processing happens locally in your browser.
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data in URLs, emails, and data URIs. Each Base64 digit represents 6 bits of data, making it ideal for transmitting binary data over text-based protocols.
This tool lets you quickly encode plain text to Base64 or decode Base64 strings back to readable text. Unlike other online Base64 tools, qtoolkit.dev processes everything client-side — your data never leaves your browser.
Common Use Cases
Encoding credentials for HTTP Basic Auth, embedding images in HTML/CSS as data URIs, encoding API tokens, encoding binary data for JSON transmission, and debugging Base64-encoded strings in logs.