Q: Translate Safari Extension

You can turn off Safari Extensions to learn whether any are causing the issue.

1. From the Safari menu, choose Preferences.
2. Click the Extensions icon, then select an extension from the list.
3. Deselect the Enable checkbox to turn off that extension.

If turning off an extension resolves the issue, check for extension updates by clicking Updates in the lower-left corner of the window. Or remove the extension by clicking the Uninstall button.

An apple article is there : If Safari is slow, stops responding, quits unexpectedly, or has other issues - Apple Support

Issue related to finder extensions :

click on finder & press command + comma finder preferences will open & please post what are you trying to install from safari extensions .

Exacty which extension is it? When I tried to find it, app store app opened and there were more than 400 of them.

No.   I think he/she means the Safari extensions option in the safari drop down panel.   It is there in the fourth row down ... but I have to say, I had some trouble when I first tried to use it.

Have you already tried downloading (and installing) it directly from the maker's website?

http://sidetree.com/extensions.html#Translate

Then try the other route: Safari > Menubar > Safari > Safari extensions and search for Translate.

Please launch the Console application in any one of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

The title of the Console window should be All Messages. If it isn't, select

          SYSTEM LOG QUERIES ▹ All Messages

from the log list on the left. If you don't see that list, select

          View ▹ Show Log List

from the menu bar at the top of the screen.

Click the Clear Display icon in the toolbar. Then take an action that isn't working the way you expect. Select any lines that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.

The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.

Please don't indiscriminately dump thousands of lines from the log into this discussion.

Please don't post screenshots of log messages—post the text.

Some private information, such as your name or email address, may appear in the log. Anonymize before posting.

When you post the log extract, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.

If you have an account on Pastebin, please don't select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.