How can I turn a screenshot into pdf on my phone?

I need to email a screenshot as a PDF for a form I’m submitting, but my Android only saves it as an image. Is there an easy way to turn it into a PDF on my phone?

Honestly, the easiest way is to open the screenshot, hit the menu or share button, and choose Print. From there, just switch the printer to Save as PDF. Works on pretty much every Android without needing an extra app.