Base64 Decoder
Paste a Base64 string and read the original text. The decoder accepts standard and URL-safe Base64 (with - and _), ignores line breaks and missing padding, and reports a clear error if the input is not valid.
Also known as: base64 decode, decode base64, base64 to text, base64 decode online.
Your data is processed locally in your browser and is not uploaded to our servers.
Features
- Standard and URL-safe Base64
- Tolerates missing padding and line breaks
- Clear error for invalid input
How to use the Base64 Decoder
- Paste the Base64 string into the input box.
- Click Decode Base64.
- Read or copy the decoded text.
Examples
Base64 to text
SGVsbG8sIE5pbmphVG9vbHM= -> Hello, NinjaTools
Frequently asked questions
Why does decoding fail?
The string may contain characters outside the Base64 alphabet, or it may represent binary data such as an image instead of text.
What is URL-safe Base64?
A variant that uses - and _ instead of + and /, so the value can be placed in a URL. JWTs use it.