I used this site to create a map using a custom dark theme to match the site: https://snazzymaps.com/build-a-map/edit/403854
To format the image I did this:
- When editing size and location, use a width of 480 px and a height of 520 px (The final image will be a square but the text at the bottom should be chopped off)
- In center location, enter the name of the location
- Edit the latitude coordinate by adding 3.25 (this will move it lower so the text on the site has more space)
- Use zoom level 5
- For the marker, search for the location again
- I used the color #E91B2F and size 36px (could be anything)
- I used Paint.net for the next part to make it the right size, but could use anything
- Take a screenshot around the map (can be rough, make sure windows app zoom is set to 100% otherwise image may be a different size)
- In Paint.net, use the magic wand to select the outside of the screenshot
- Invert the selection, then crop to selection
- Adjust canvas size to 480 by 480 (should just remove bottom 40 px)