Base64 Decode
Decode Base64 to text
Frequently Asked Questions
What is Base64 decoding?
Base64 decoding converts a Base64-encoded string back to its original form. Base64 uses A-Z, a-z, 0-9, +, and / to represent binary data as ASCII text. Paste an encoded string and the decoder reveals the original content instantly.
How do I decode a Base64 string?
Paste the Base64 string into the input field and click Decode. The tool converts it back to plain text, binary data, or an image. For example, SGVsbG8gV29ybGQ= decodes to "Hello World".
Can I decode Base64 images?
Yes. If the Base64 string represents an image (starts with data:image/...), the decoder displays the image preview along with its format and dimensions. You can download the decoded image file directly.
Is Base64 encoding the same as encryption?
No. Base64 is an encoding scheme, not encryption. It does not provide security — anyone can decode it. It is used to safely transmit binary data through text-based systems like email (MIME) and JSON APIs.
What is the difference between standard and URL-safe Base64?
Standard Base64 uses + and / characters. URL-safe Base64 replaces them with - and _ to avoid URL encoding issues. The decoder handles both variants automatically and indicates which format was detected.