How to use the Base64 Encode & Decode
- 1Type or paste text, or drop a file.
- 2Click Encode or Decode.
- 3Copy the result or download it.
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Frequently asked questions
Are my files uploaded anywhere?
No. Everything runs inside your browser on your own device. Nothing is sent to a server, so it works even offline once the page has loaded.
Why is Base64 bigger than the original?
Base64 uses 4 characters for every 3 bytes, so the result is about 33% larger.
What is URL-safe Base64?
It replaces + and / with - and _ and drops the = padding, so the result can be used in URLs and file names.