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Base64 URL Encoder

Encode text to URL-safe Base64.

What Is a Base64 URL Encoder?

The Base64 URL Encoder converts text into URL-safe Base64 (RFC 4648 §5), which replaces '+' with '-' and '/' with '_' and strips the padding '=' characters. This variant can be safely placed in URLs and query strings without escaping.

How to Use This Base64 URL Encoder

  1. 1
    Input TextType or paste the text to encode.
  2. 2
    Instant EncodingThe URL-safe Base64 output is produced immediately.
  3. 3
    Copy ResultClick the copy button to save the encoded string.

Frequently Asked Questions

Standard Base64 uses '+' and '/' which must be percent-encoded in URLs. URL-safe Base64 swaps them for '-' and '_' and removes padding, producing strings that are valid URL characters.
It is used in JWTs, OAuth tokens, signed URLs, cookies, and anywhere Base64 data must live inside a URL without further encoding.

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