If you use Safari as your goto web browser on your iPhone or iPad you probably know that, if need be, you can change the font size on web pages, choose to view their desktop website rather than mobile (because sometimes mobile versions don't have all the options that desktop versions have) or choose to use reader mode to declutter the page. Doing this every time you go to your favorite sites is annoying though, so iOS gives you the option to have your customized settings take effect whenever you navigate to your frequently visited sites.
iPhones and iPads these days have quite a bit of storage, so you may have plenty of room to save documents on your device rather than spending money to upgrade your iCloud storage to the next tier. To do this you will want to set your internet downloads to automatically save locally, which is easy to do with Safari's new download manager and you will want to make sure you save email attachments locally. Also, anything you have stored in iCloud you can always move to a local folder in the Files app.
iOS 13 finally adds a download manager to Safari on iPhone and iPad, which makes it more like your desktop where you can see (and choose) where a downloaded file is saved. Now any time you tap on a direct link to a downloadable file like a PDF, MP3, CSV, etc., a window will pop up asking if you want to download it or, in some cases, view/listen to it.
Opening many tabs in Safari while browsing on the iPhone can be convenient. It can also easily become a disorganized mess. Luckily, Apple has created a way to save all open tabs to Safari bookmarks. This way, the tabs can be stored and reopened later with one tap. When saving the open tabs, they are all stored within the same bookmarks folder.
Accumulating open tabs in Safari happens quickly on an iOS device. iPhone, iPad and iPod touch owners can easily watch the browser tabs pile up, unless they are manually closed one at a time. iOS 13 and later offers a way to keep Safari tabs under control automatically. Tabs can be set to expire after a certain time frame, which means they only stay open for a limited time.