What is the lightest browser to launch a jupyter notebook? Currently I am using Firefox as default browser, I have no issue to naviguate with it, but I have a little limited memory (8GB, 6.8 available) and Firefox takes a lot of RAM for nothing big, the more I use it in the time, the more it "eats" the RAM. I want to know which is the lightest browser to use jupyter notebook to save my RAM for computations on my dataset for instance.
Try 32-bit Chrome or Firefox, it may significantly lower memory usage.

Remember, it is surprisingly difficult to estimate physical memory consumption of given app: https://dzone.com/articles/windows-process-memory-usage-demystified

Also - unused RAM is wasted RAM. Do not blame browser for taking and using, what's available. When overall memory usage will raise, browser can drop some internal cache and free that memory.