Privacy browser on F-Droid is excellent and opensource with adblocking built in and allowing you to block javascript in a site-dependent manner with a simple toggle at the top of the page - for when sites break too badly with no javascript.
It also has a good full screen mode and dark/light mode for webpages.
I also have Bromite, but almost never use it since the above is so good.
Take a look at Privacy Browser. Completely open source, active and transparent developer and regularly implemented features, many of which are geared towards privacy and security.
Privacy Browser by Soren Stoutner - I use it currently. Lightweight, does a great job in removing all cookies/cache/web data on exit if you are a privacy freak and set it like that. Far better than some other browsers in this respect ( just try opening nytimes site on any other android browser and compare the amount of "user data" retained even after you clean all. This browser rocks.
Stoutner Privacy Browser checks most of your requirements, it's very privacy focused, has built in dark mode, and it's open source. It's a little rough around the edges, but I find that's it's quite nice when you turn in full screen mode. The free version (the paid version is one dollar and is the exact same except without the ad) has one ad at the bottom of the screen, but it goes away if you turn on fullscreen mode
It feels kind of clunky at first, but give it a chance, ESPECIALLY if you want a privacy focused browser
https://www.stoutner.com/privacy-browser/
There's step to clone the codes there, right around top. I've never done it though. That browser is just my another alternative "Chrome(ium) like" here. Its gitweb does confuse me, and seem not mobile friendly.
No no, I mean this:
https://www.stoutner.com/privacy-browser/changelog/
Take a look and tell me what do you think, I started to use it few weeks back and till now I like it
I'm glad you like it.
Bookmarks are available in a sliding drawer on the right of the screen. Apparently it is difficult for users to find it, as you aren't the first person to ask. More information is available here:
https://www.stoutner.com/privacy-browser-2-7/
Enabling dark mode does currently require JavaScript to be enabled because Privacy Browser is using JavaScript to override CSS settings in Android's WebView. As part of the 4.x series, I am planning to fork Android's WebView to create Privacy WebView. At that point it will be possible to enable night mode without enabling JavaScript.
I'm quite fond of Privacy Browser. It's a completely open-source webview-based browser that has an extremely active and transparent developer.
It does have a night mode for those that want it, and while it doesn't have tabs yet, they are on the development roadmap, likely for early to mid next year.
I'm a fan of Privacy Browser myself. As I don't have my Essential yet, I can't comment on how it plays with the full screen yet, but the developer is extremely transparent and active, and the browser is completely open source.
Various security measures are in place, and night mode does exist - tabs are on the to-do, but not for a while.
What are your thoughts on Firefox for Android (stable, beta, and nightly) still showing https://www.xn--80ak6aa92e.com/ (a site demonstrating a flaw in the way unicode domains are handled) as "apple.com" in the address bar? The issue was addressed soon after the article came out in WebView-based browsers (Firefox Focus, Brave, Chromium). However Firefox for Android is still vulnerable which has made me a bit uneasy in continuing to use it. In the meantime I've been trying out Privacy Browser by Soren Stoutner (available on F-Droid and Google Play Store) and have been liking it.