Literally none without jank. Javascript and HTML5 are monsters and it just isn’t possible to get a universally flawless experience without them.

Your best bet is if you’re willing to give up a significant amount of fidelity (and images). https://en.wikipedia.org/wiki/Lynx_(web_browser)

I’ve been testing ungoogled-chromium for a few weeks - pretty happy with it so far!

We’re no longer just rendering text anymore. It’s at the point webpages are basically compiled in real time.

It’s no longer possible unless you give up a lot

Lynx

Whatever’s the most debloated version of firefox or chrome.

You will not get all websites on something thats light weight. Web browsers are basically mini operating systems at this point.

If the “literally any modern website” part is a hard requirement, then I would suggest to go for a fork of modern mainstream browsers with strong privacy/adblocking features. The justification for this is that browser engines can only get so light in terms of complexity and still support modern sites, but sites themselves can be made to be less resource demanding on the browser by selectively blocking unwanted elements. Adblocking is the obvious, blocking unwanted JavaScript would likely be the next best bang for the buck, but even clearing the cache after each session can make the browser feel faster if your bottleneck is memory/cpu instead of the network.

as usually you have to go with privacy respecting open source browsers, cause those dont get pointless feature integrations. you havent specified the platform so:

• for android: ironfox, fennec, helium
• for pc: ungoogled chromium, librewolf, helium

you should also look around on alternativeto.net

A “minimum RAM, maximum screen real estate” browser?

I’ve used many browser forks. But I needed one for that specific constraint, and my search landed me on Zen Browser.

However, keep in mind that extensions are heavy. If you need (for example) adblocking, then a browser integrating an Adblock engine natively is best.

😂

I wish this existed :'(

Pale Moon Portable

give it a shot , its opensource and very light weight

It used to be opera. These days though, pretty much every browser is based on chrome, chromium or Firefox. To support modern websites as you specified is very complex, especially when taking into account security and performance. I don’t know of any lesser known browser engines if you expect to render common websites and support video, sound, animations and so on.

For what platform?

Realistically speaking, the most lightweight browser capable of using modern websites and not just being reskinned Firefox or some Chromium-based browser is Luakit.

It uses Webkit for rendering and Lua for configuration – but be aware, the configuration is absurdly overcomplicated and complex and extremely poor documented.

https://luakit.github.io/

Even Chromium browsers, which is unfortunately the standard most websites are built around, don’t support everything that well. Can’t be done.

There is a Waterfox Portable, but lately I haven’t been able to get it to use Video Calls on things such as Discord or Zoom (it worked in the past, might be a current update issue).

I’m guessing you’re looking for librewolf or waterfox, though I doubt they are strictly lightweight or can browse literally any modern website.