I often need to combine multiple PNG images into a single PDF for work and study, but many online tools either reduce image quality, add watermarks, or require a paid subscription.

I recently came across a guide that explains several ways to convert PNG to PDF, including built-in methods on Windows and Mac, as well as some online options:

https://smallppt.com/blog/basics/convert-png-to-pdf-method

Has anyone tried these methods before? Which approach do you find the most convenient and reliable? I’d love to hear your recommendations.