IOS – Enforce authentification (passcode, Touch ID, Face ID) for viewing saved passwords on iOS

Since iOS doesn't have a keychain utility to go in and surgically remove the stored password, you would have to either:

• change the password on the base station to effectively lock out all clients with the old password.
• erase the iOS device and refrain from restoring a backup that contained saved passwords onto the device. (Encrypted backups of the device typically store keychain items, non-encrypted backups don't save those passwords, so you might try an unencrypted backup, restore the backup and then test if the password was saved in the application bundle as opposed to a keychain).
• As a long shot, try enabling iCloud keychain syncing and see if you can clean things on a Mac that has iCloud keychain syncing enabled as well by opening the iCloud keychain in Keychain Utility.

There are a handful of workarounds for saving images without being downsampled, use what works for you:

• Tap and hold the image to save it to Photos app as high resolution, despite being downsampled in Safari
• Save the image to iPhoto
• When publishing images, use PNG or progressive JPG
• Email images to the iPad

This is a well documented quirk in Safari on the retina iPad, it could be a bug or just a way to make the web browsing experience more fluid given current limitations of hardware. Who knows, but it’s easy to get around for now.

Source: OSXDaily

You can also report issue to Apple.