Safari crashing after update to Safari 10 on El capitan

Safari loads all my tabs but whenever I right click on any image to download it it immediately crashes... no "Safari quit unexpectedly" error message appears either ... I removed the Safari preferences.plist as I saw someone suggested elsewhere but that didn't help either.

as soon as I installed Sierra all the bugs/crashes stopped... I guess Safari 10 needs the latest OS to work properly... which beggars the question why they would release it separately

I had the crashing issue for a short time, but when away after a couple of restarts. However it is SOOOOOO slow... Clearly there is an issue

Try re-indexing Spotlight.

Spotlight – Re-index

I had the same problem.

I do SuperDuper! backups daily and I went back a day before I upgraded Safari and started up from that backup HDD. Once started up, I located and threw out Safari 10 on my MBP and replaced it with Safari 9.1.3 from the backup. I did not go deeper and trash any of Safari's prefs or other pieces in the various library folders, just replaced the new app with the older one.

I'm running Safari 9.1.3 now and it's working fine (so far). Pages that were crashing it before are no longer causing problems; it seems I'm back to where I was before doing the upgrade to 10.

I'm going to wait until I do the Sierra upgrade to get the newer version of Safari unless I hear that this issue has been fixed. I plan to do the Sierra upgrade in a week or so. I used to do these things on day 1 but I'm a bit more conservative now and I'm in no huge rush.

Good luck with this. Let me know if you run into issues, glad to try to help.

It does seem a lot of effort, and I can't believe this was intended by Apple. I suspect that Steve Jobs may be turning in his grave!

I have stopped by other machines from upgrading to Safari 10 until some more info is known

Not really much effort at all to go back to an earlier version. One of the many reasons to do regular backups.

I'm sure Apple did not intend for people running older systems to have crashes although it might have been a mistake to make Safari 10 a backward compatible upgrade. Maybe better to keep it in Sierra until the bugs are worked out.

Safari/Preferences/Advanced - enable the Develop menu, then go there and Empty Caches. Quit/reopen Safari and test. Then try Safari/History/Show History and delete all history items. Quit/reopen Safari and test. You can also try try Safari/Clear History…. The down side is it clears all cookies. Doing this may cause some sites to no longer recognize your computer as one that has visited the web site. Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Select Library./Caches/com.apple.Safari/Cache.db and move it to the trash.

Go to Safari Preferences/Extensions and turn all extensions off. Test. If okay, turn the extensions on one by one until you figure out what extension is causing the problem.

Safari Corruption See post by Linc Davis

Press and hold the Option key down when selecting Safari's Clear History. This enables you to retain website data and cookies while clearing only the browsing history.

When you got Sierra all set up with your Apple ID and iCloud settings is it possible that a shared bookmark or setting got copied into the new install?

trying deleting the .plist file in the preferences folder in the Library and restarting Safari [it'll create a new .plist file] Hold down the alt key whilst selecting Go in the Finder menu to reveal the Library Folder.

see pic

I too have this issue. I have tried deleting the plists mentioned as well as holding down shift when starting Safari to prevent tabs loading and nothing has worked.

Logging on as a different user and Safari launches fine.