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Input
Result
This tool runs locally in your browser. It does not send text to a ToolForge Online server.
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What is Base64?
Base64 is a text representation for binary data. It is often used when data needs to travel through systems that expect plain text.
When to use Base64
Use it for technical tasks such as checking encoded snippets, small configuration values, test payloads, or URL-safe tokens.
Base64 is not encryption
Base64 only changes representation. Anyone can decode it, so do not treat it as a security layer.
Local browser processing
Encoding and decoding happen with browser JavaScript on your device. Avoid pasting sensitive data into any online tool unless your policy allows it.
FAQ
Does it support Unicode?
Yes. The tool uses TextEncoder and TextDecoder so non-ASCII text can be encoded and decoded.
Can I decode URL-safe Base64?
Yes. Enable URL-safe Base64 to handle dashes and underscores instead of plus and slash.
Does it upload my text?
No. Processing happens in your browser.
What happens with invalid Base64?
The tool shows a readable error and keeps the page usable.