Developer Tools
Base64 Encode / Decode
Convert plain text and Base64 in either direction.
About This Tool
Convert text to Base64 for transport or decode Base64 back into readable text. The tool supports standard Base64 and the URL-safe variant often used in tokens, query parameters, and web APIs.
How To Use It
- Choose Encode or Decode.
- Select Standard Base64 or URL-safe Base64.
- Enter the text or Base64 value.
- Copy the result, or use the output as the next input to reverse the conversion.
Examples
Encode text
Hanakash becomes Q3VlU29sdmU= in standard Base64.
Decode a token segment
Switch to URL-safe Base64 when a value uses - and _ instead of + and /, or when padding is omitted.
Useful Notes
What Base64 is for
Base64 represents bytes as text characters that are easier to move through systems that expect text, such as JSON, headers, or form fields.
Not encryption
Base64 is reversible encoding, not a security layer. Do not treat a Base64 value as secret simply because it looks unreadable.
FAQ
What is URL-safe Base64?
URL-safe Base64 replaces + with - and / with _, and often removes trailing = padding so the value can fit more easily in URLs.
Why does decoding fail?
The input may contain invalid Base64 characters, use the wrong variant, or be incomplete.
Is conversion local?
Yes. Encoding and decoding use browser APIs on the page.
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