URL-Safe Base64
Free online url safe base64 tool. Browser-based, private, no uploads.
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URL-Safe Base64
Switch to URL-safe Base64 (- and _ instead of + and /) for clean links.
Why it matters: URL-safe Base64 keeps tokens valid inside query strings and paths.
How to use Base64
- 1 Type or paste your text into the input box above.
- 2 Click Encode to turn text into Base64, or Decode to convert it back.
- 3 Toggle URL-safe mode for links, or UTF-8 for emoji and accents.
- 4 Use JWT / API-key / JSON modes for developer workflows.
- 5 Copy the result or open a specialized tool from the hub below.
Frequently Asked Questions
Standard Base64 uses + and /, which have special meanings in URLs. URL-safe Base64 replaces them with - and _ to prevent breaking links.
Always when embedding Base64 data in URLs, filenames, or database keys where + or / might cause parsing errors. Encoding and decoding happen entirely in your browser, so your text never leaves your device.
Yes. Simply replace + with - and / with _. Remove any padding (=) if required by the system. Our tool handles this automatically.
No. It's the same data, just represented with different characters for compatibility. Security depends on what you're encoding, not the format.
Yes. There is no charge, no account, and no watermark on the output. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
All Base64 Tools
Encode, decode, and inspect Base64 for web, APIs, and JWTs.
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