A Mozilla developer revealed one of the hidden techniques used by Firefox 57 aka Quantum, to improve page load times.
Mozilla has already mentioned a number of architectural changes to Firefox Quantum, which seem to have yielded improvements in speed and performance.
But Firefox 57 has another secret that it uses to achieve faster page load: it delays scripts from monitoring domains, such as www.google-analytics.com.
Η technique it was developed by Mozilla engineer Honza Bambas, who calls it "tailing". It works by delaying tracking and tracking scripts by opening a page, offering better load times.
The feature is not intended to improve it privacys, although it is based on data from Firefox's privacy protection feature Tracking Protection.
Η cut or to put it better, delaying specific scrips simply prevents them from loading, and does not disable them completely.
So we can say that the best performance in loading a page is achieved by changing the browser's priority in site and site tracking requests.
"Οι αιτήσεις παραμένουν σε αναμονή όσο υπάρχουν άλλα αιτήματα από την σελίδα που εξακολουθούν να φορτώνονται και μόνο μέχρι για περίπου 6 δευτερόλεπτα. Η καθυστέρηση ισχύει μόνο για δέσμες ενεργειών (scripts) που προστίθενται δυναμικά ή σαν async. Τα tracking images (τεχνική παρακολούθησης) καθυστερούν πάντα. Όμως είναι νόμιμο σύμφωνα με όλες τις προδιαγραφές του HTML και υποτίθεται ότι οι καλά κατασκευασμένοι χώροι δεν θα επηρεαστούν στη λειτουργικότητά τους ", αναφέρει ο Bambas.
This technique seems to work well, although in some cases it shows a blank page for a few seconds instead of gradually loading the page. Bambas refers to the Google page, Page-Hiding Snippet which uses as an example where this can happen.
Ωστόσο, όπως επισημαίνει "η πρόθεση του tailing είναι να βοηθήσει στην απόδοση καθυστερώντας κάτι που υποτίθεται ότι δεν είναι ορατό".
In addition to all the above, Firefox also runs the project that will display all HTTP pages as unsafe.
Currently it displays warnings on HTTP pages that manage login or financial data.
