With Portia, you can easily set a list of URLs as starting pages. Once in Portia, just enter any of the pages you want to scrape.

Then, create a New Spider.

Once your New spider is created. A new menu will open on the left side of the editor.

Find the option START PAGES and click on the green button to see the options.

If you select Add feed URL, a new menu will deploy. And you can explore different options to set your bulk of URLs.

You can also use Add generation URL, as an alternative to create a list of URLs.
You start with a Fixed fragment, and have the option to add a Range of numbers or letters, or a list of values separated by spaces.

Check this example,

We hope you enjoy this new feature!