@dannyswift Chrome should automatically hibernate extensions if they're not in use, except for "persistent" background extensions. As for your request, you can set this behaviour yourself: Go to vivaldi://extensions Find an extension you want to limit to work on click only click "details" Scroll until you find the "Site access" choice: Set it to "on click" Then, that extension will only activate when you click it's button.

@audghk0010 Ah, fine Windows' Wuickstart can cause starting issues and on modern hardware it is not needed as the SSD or HD are very fast after boot.

@LonM Ayyy, thank you very much! Works as I envisioned! I doubt it's the very best way to do it, but if anyone is interested in a simple auto-hibernation for new background tabs, here's what I got in background.js: chrome.tabs.onUpdated.addListener(function (tabId,info,tab) { if (!(/"read":true/.test(tab.extData))&&tab.title!=""&&!(/^http/.test(tab.title))) chrome.tabs.query({active: true, currentWindow: true},function(tabs) { if(tabs[0].id!=tabId) chrome.tabs.discard(tabId); }); }); Interestingly, tab.url is always present, but if you hibernate the tab right away, it will stay empty on wakeup, so I check the title instead, and to make it more user-friendly, wait for it to display the actual title of the page, not just url, as it does at first. :3 Thanks again! Edit, right away: There still seems to be a window of time when the page becomes unresponsive, so it will need more work. If you can read this, I still wasn't motivated enough to fix it

Just for google or forum researchers/newbies I found how to achieve this in present Vivaldi with slightly more job to do. Click the tab furthest on the left. Then press (and hold) >shift< key on keyboard. Then click tab furthest on the right. Release shift. Right click on any of the tabs -> choose option hibernate >x tabs< where x is the number of cards selected. Done BTW This option is limited in usability because it does not allows to >unhibernate< whole window in the same way you hibernate it. So it is still feature request. It is why the simplest solution to my problem was just to buy additional 16 GB of RAM and/or unfortunately use (time consuming) saving and opening sessions more extensively.

@yurkam The great discarder seems to be still on control by the person who did the great suspender. But I understand the feelings of lack of trust as tracking opt_out always sound pretty scary.

That would be a great solution to the memory hungry Vivaldi.

@jumpsq You mean this? (Currently, we need an addon to do that)

@dannyswift Please vote for the existing request: Speed Dial Open All in Tiled Tab Stack If you use sessions, they can include tab-stacks and/or tiled tab groups. You will still have to right-click to hibernate the tab stack

@dude99 Not default at default but it should be an option to switch on this behavior as default in Vivaldi Settings for those who have limited hardware resources or just use browser such it is prefered behavior. I personaly prefer loading pages at startup because I have powerful hardware and don't want waste my time on waiting pages to load after clicking on them.

Maybe integrate this in a 2-step-option: Do not auto-load hybernated tabs without explicit refresh Skip hybernated tabs on cycling (step 1 must be active to enable) to still allow predictable fixed scroll distance when cycling between tabs.

Hi, You could try https://chrome.google.com/webstore/detail/tab-suspender-memory-save/ghklhojdnolaljfmaappofimepjeapih disabling integrated Hibernation engine until the feature will be considered. -- "Off topic Tip" Follow the Signature's BackUp | Reset link. Take the opportunity to start a Backup plan, even create a Template Profile. Windows 7 (x64) Vivaldi Back up | Reset