Base64URL Encode / Decode
Encode or decode Base64URL with URL-safe alphabet handling, padding options, and JWT-friendly output. Free Base64URL tool by Graph Tools.
Use this free Base64URL encoder and decoder to convert text and binary data using the URL-safe Base64 alphabet (+ replaced with -, / replaced with _, and optional padding). Paste any text or standard Base64 string to convert it to Base64URL format, or decode a Base64URL string back to readable text. Particularly useful for working with JWT header and payload segments, OAuth tokens, and any system where standard Base64 padding and characters cause URL encoding issues.