Base64 decoder to a file
Turn Base64 text back into a file. The type is detected from the bytes, so a decoded PNG gets a .png name.
How it works
Whitespace and line breaks are ignored. data: URL prefixes are removed. The decoded bytes are checked for a known file signature to choose the extension.
Your files stay on this device. Nothing is uploaded, and the converter runs entirely in your browser.
Questions
Why does the decoded file have a strange name?
Names come from the input file. Rename the output if you need a specific one.
What if decoding fails?
The text has characters outside Base64, or its length is wrong. Check the copy.
Are my files uploaded?
No. Every conversion runs in your browser, on this device. Files are not sent to ITpris Verktyg or to any other server.