The initial version were coordinates actually but then realised people mostly love their cities more than anything and it's easy that way. Will add this feature back as optional parameters.
There is throttling in the code when making api request to respect the map provider as per their terms and conditions. Can make few thing parallel but it's a hobby project how many posters would one person want to generate?.
It will work, give it time. Also default distance is 29000. Give distance of 10000 to see faster results. It certainly is working as many users have generated maps.
Location: Bengaluru / Bangalore
Remote: Yes - Freelance
Willing to relocate: No
Technologies: Golang Python
Resume: http://ankurgupta.name/work.html
Email: ankur at outlook dot com