Open the PNG file in an image viewer or editor
Select the Print option
Choose Save as PDF or Microsoft Print to PDF
Select the PDF printer if prompted
Choose the destination folder
Save the file as a PDF
On Windows, right-click the PNG file
Select Open with
Open it in Photos or Paint
Press Ctrl+P
Select Microsoft Print to PDF
Click Print
Save the PDF file
On Mac, open the PNG in Preview
Click File
Select Export as PDF
Choose a file name and location
Click Save
On Linux, open the PNG in an image viewer
Select Print
Choose Print to File
Select PDF as the output format
Save the file
Use an online PNG to PDF converter
Upload the PNG file
Convert it to PDF
Download the PDF file
Use Adobe Acrobat or another PDF tool
Create a PDF from the PNG
Save the new PDF file