A Tool to Take a Screenshot of Web Pages

You can build a website that helps people take a screenshot of a URL and download it on their device.

Here is an example:

https://www.screenshotmachine.com/

How to Build Something Better

You can enable users to choose an image format and resize their screenshot to their liking.

How to Monetize

You can charge users for API access and help then take a screenshot of any URL and use it on their website.