Base64 encoder for files
Turn any file into Base64 text, for data URIs, email attachments and API payloads.
How it works
The file is read as bytes and written as Base64 text in a .txt file. Choose one line, or 76 characters per line for MIME mail.
Your files stay on this device. Nothing is uploaded, and the converter runs entirely in your browser.
Questions
Does Base64 make files smaller?
No. Base64 is about a third larger than the original file.
Is this encryption?
No. Base64 is an encoding anyone can reverse.
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.