Base64 Advanced Tool
NewEncode or decode text and files using standard Base64 or URL-safe Base64 (Base64url). Standard Base64 uses +, /, and = padding. URL-safe Base64 replaces + with - and / with _ and is used in JWTs, URL parameters, and file-safe contexts. Also supports encoding binary files to Base64 data URIs. All processing is done in your browser.
Base64 Encoder / Decoder
Encode or decode Base64 strings. Supports standard and URL-safe Base64 formats.
How to Use Base64 Advanced Tool
- 1Enter text or upload a file
- 2Choose Standard or URL-safe Base64
- 3Click Encode or Decode
- 4Copy the result
Your Privacy is Protected
Base64 Advanced Tool runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
Frequently Asked Questions
What is the difference between Base64 and Base64url?
Base64url replaces + with - and / with _ and omits = padding. It is used in URLs and JWTs where + and / would need escaping.
Why Use This Tool?
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