You could save a copy of your HEIC file as a JPG in the Photos app. You could use a free online converter website, like Convertio, to convert your HEIC file into a JPG file. And lucky for you ...
Step 1: Find the image you want to convert. This can be anywhere on your Mac—Desktop, Downloads, or Documents. For this ...
The only downside is that they tend to be a little limited in the amount of data you can convert ... PDFs to JPG files, look no further than Any PDF to JPG, and can be downloaded free from Microsoft.