Mac users??? revisited

[sprucebunny]

Are there any Mac users here that could help me figure out how to post pictures? I got "Graphic Converter" but I haven't been able to make it work properly. Thanks.
OK SO graphic converter wasn't the right thing.
Now I got "photo express".It told me my picture was 8K but when I put it on here it took a long time to load and then there was no picture. I think I've deleted it.
Back to the drawing board