It seems Javascript does not really like running in sidebar as any page I tried have JS not working. Also cookies are not preserved which makes pages asking for l/p on each click. Also FF sidebar which this plugin uses has pretty narrow max width. This can luckily be "fixed" and make it resize without limits by installing https://github.com/Aris-t2/CustomCSSforFx and enable "./css/generalui/sidebar_width_unrestricted.css" (search for "sidebar" in "userChrome.css" and uncomment). Tested with FF 73.

A must-have for me, this is a godsend. Very useful for wide monitors. 4 stars though because I can't extend the width of the side window to more than a fixed width - which seems very arbitrary.

I see 2 serious problems:
1. If you want to use it for Instagram, but you already use Facebook Container, you will have to login again and again.
2. Now you can not just create a folder for mobile websites and use it in sidebar as before, now you have to use context menu every time you need it. 2-3 clicks instead of 1.

Superb! Very useful add-on!
I hope that it continues to be developed. For example, to be able to drag it with no restriction. Or to have multiple pages that you can switch.

Awesome extension! Exactly what I was looking for to watch my email.
Add more futures plz
- open in a new tab not in mobile view
- back button
- multiple side views
- resizable more then 1/3 of a page

could be better if this could be like what tile tabs used to be before quantum also if i could put it at the bottom

Love the concept, but really needs to expand up to 50% in order to be useful. Also, clinking links in the sidebar bar page will actually change the main page, which took some time to wrap my head around. Hope it goes native!

Handy but limited. Allowing wider view (50% instead of 25% of window) would help a lot. Too many web pages are not optimized for mobile view and are not readable when limited to 25% side bar (PDFs opened in browsers, for example). That's available with Tile Tabs WE, but it would be nice to have in Side View to not have to guess how a particular page is going to behave, choose which extension to use, test it, find it's not the right choice, close, choose the other one, etc.

Honestly, works exactly as it was intended and very well at that. If it weren't for two issues, I would give this five stars. These issues are that when the add-on is first installed, it opens up a side bar with your bookmarks and other useful things. After looking around, very shortly, I found that you have to click the icon on the top right to open the multi-view. For a lot of people, this wouldn't be an issue, but for new or inexperienced computer users, this could be confusing and may result in them uninstalling because they think that it isn't working. The next issue being that when I'm trying to install another extension using the side view, the extension doesn't want to install. Other than these issues though, the add-on works very well as I am using it to type this review. Good job!

If you can make this as user friendly and functional as Vivaldi Browser's Side Panel feature, Firefox would be my daily driver. Vivaldi's Side Panel feature is something that I expect and use all the time. And is what keeps me coming back to Vivaldi from all other browsers.

今の所快適です。
早くきちんとした機能としてこれが実装されてほしい。調べ物をしながらYouTubeを見るのに便利です。
私はuserChrome.cssを使ってサイドバーの幅を可変にしています。

ただいくつか要望があります。

・コンテキストメニューは通常画面の方と同じ表示にしてほしい。
せめて「進む／戻る」が表示されていたらもっとページ遷移が楽になるので。

・横方向にはみ出した時、横スクロールバーが表示されません。

・firefoxを閉じた時、その画面を残すか選ばせてほしい。


……自分の場合スライドバーは元々ブクマの表示をメインにしていたので、スライドバーを使いつつ画面分割できるのが一番の理想ではあります。
画面分割できるアプリはありますが、JavaScriptを使ったページ（Google翻訳など）だとうまく表示されませんでした。
画面分割機能も開発お願いします。

I use it to keep my task lists open alongside my email+calendar+etc, so it's really a huge help with my daily office work!

Great addon. Some missing option to perfection : some buttons (back, reload) and capability to display more than 25 % width.

nice idea and for a developer it's really helpful. it would be nice if i can open whatsapp messenger on side bar. right now it only show the whats app web page.