I don’t mind if I have to install another browser, I just want to be able to see and use developer tools. In particular the ability to view and edit the source code of a web page, and access the browser and error console.
I tried Firefox for iOS and Google Chrome, but to no avail. I can technically see the source code through the ‘Shortcuts’ app, and probably with BeautifulSoup and requests (in one of the many iOS apps that allow you to run Python, albeit in a weird limited environment), but it’s just not the same the full developer tools in a browser and there is no console.