How to Use Base64 Decoder Online
Published: May 2025
Base64 is a binary-to-text encoding scheme that allows you to convert binary data into readable ASCII characters. It’s commonly used to encode data for transmission over text-based mediums like email, URLs, and JSON APIs.
What is Base64 Encoding?
Base64 encoding works by dividing binary data into 6-bit groups and representing each group with a printable ASCII character. This ensures that the encoded data remains intact when passed through systems that may alter or filter binary content.
Why Decode Base64?
- To inspect encoded email attachments
- To extract embedded images or files in HTML or CSS
- To troubleshoot API data issues
- To read obfuscated text
How to Decode Base64 Online
Using our Base64 Decoder Tool is simple:
- Paste your Base64-encoded text into the input box.
- Click the "Decode" button.
- The decoded output will appear instantly below.
Is It Safe to Use Online Decoders?
Yes — as long as you’re not decoding sensitive information on public or unknown platforms. Our Base64 decoder at 72zq.com runs entirely in your browser; no data is sent to a server.
FAQ
Can Base64 decode images?
Yes, but this tool shows text output only. To view images, paste the Base64 string into an HTML <img> tag.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It can be easily reversed.
Why does Base64 end with = or ==?
The equals sign is used as padding to ensure the encoded output has a length that is a multiple of 4 characters.