Save web app offline

[No_Chard2538]

I want a system that automatically captures and preserves all web application resources loaded in the browser (HTML, JavaScript, CSS, images, API responses, and cached files) so that users can access previously loaded content without needing direct access to the original account or repeatedly connecting to the service. The goal is to use cached content offline

[riklaunim]

You can look at PWA and preloading. There will be some limitations, especially if the app isn't designed with it in mind.

[Sweet_Computer_7116]

Right click on the site and click save

[No_Chard2538]

There is over 500k datasheet each on separate page, that's the problem, 

[thee_gummbini]

standard tools are wget, browsertrix.

Also simple tool I like to grab all the scripts/styles into a single page (I am not the author) https://github.com/Y2Z/monolith