Note:
1. For a URL, prefix it with 'https://' or 'http://'.
2. For a phone number, use the format 'tel:+1234567890'.
3. For images, videos, or PDFs, you will need to upload them to a hosting service (such as Google Drive, Dropbox, or a file hosting service) and obtain a shareable link. Then, use that link as the input for generating the QR code.
4. For plain text, simply enter the desired text.