Base64 Tool

Securely Encode and Decode Base64 Strings

Base64 encoding is a fundamental process used by developers to convert binary data into an ASCII string format, ensuring that the data remains intact during transport across networks like email or HTTP. Whether you need to encode an authentication header, format a data URI, or decode a secure payload, our Free Base64 Tool provides instant, bidirectional translation with a single click.

Is it safe to paste API keys or secrets here?

Yes. Your data never leaves your computer. We know that developers frequently use Base64 decoders to inspect sensitive strings like JWT payloads, basic auth credentials, or private API keys. ToolsHub operates strictly client-side. The JavaScript encoding and decoding processes happen entirely within your web browser. We do not transmit, log, or store your inputs on our servers.

Does this tool support UTF-8 and special characters?

Absolutely. A common flaw in many basic online Base64 encoders is that they crash or output corrupted garble when dealing with emojis, foreign alphabets, or special symbols. Our tool is fully optimized for UTF-8 character encoding, ensuring that your complex text strings are handled perfectly in both directions.