What is the latest version of opera that can be
run okay on a Debian Jessie system ?

@leocg I understand that Service workers can be unregistered. Will they be automatically reregistered when the relevant website is revisited ?

Also can the Service Worker and Local Storage Caches be deleted through use of Developer tools ?

If so, how is this best achieved ?

Thanks.

Very recently, the following directories have appeared :

/config/opera/Service Workers
/config/opera/Local Storage

They are taking up a lot of disk space.

What is the best way to get rid of this storage ?

How can I unregister the Service Workers ?

How can I delete/clear the Service Worker Cache ?

How can I delete/clear the Local Storage Cache ?

Thank you.

@nneo16 Thanks very much for the info.

@leocg I understand that opera://about in Windows gives the profile path, but Linux only gives the version number.

Opera version 45.0.2552.888 is being run on a Linux Debian
desktop.

I would like to install a newer version of opera, but I wish to save the current version of opera in case I need to go back to it.

How do I save all the files (profile, configuration files, opera-stable executable, etc) associated with the current version of opera so that I can easily restore them if necessary ?

Where are all these files located on a Linux Debian system ?

@nneo16 There doesn't appear to be the option you suggest.
Instead there is the option Open pdf files in the default PDF viewer.

This option is currently checked.

What would happen if this option is unchecked ?

@sgunhouse I wish to open pdf files without saving them.

Is it possible to open pdf email attachments without downloading them ?

Opera is running on a desktop using
Debian Jessie.

Opera was constructed using
Opera-stable_45.0.2552.888_amd64.deb

How can I open email attachments without downloading them ?

Clicking on an email attachment to open it used to work but that does not work now.

Suddenly not able to open email attachments starting today