HOW TO MEASURE THE SPEED OF THE SITE
Page rendering time.
In Yandex Metrica terms, this is the "Time to load the DOM" — the time from the start of the transition to the page to the full loading of the page with all its components (images, CSS, scripts, etc.). This is the time after which the page becomes available for user interaction.
Page creation time
In terms of Yandex Metrics (the report can be found in Reports → Standard Reports → Monitoring → Page loading time) is the "Time before Rendering". This is the time from the beginning of the transition to the page until the moment when the page begins to be rendered in the browser. It is this value that is subjectively perceived by the visitor as the loading speed of the site. It usually takes no more than two seconds.
Page rendering time
In Yandex Metrica terms, this is the "Time to load the DOM" — the time from the start of the transition to the page to the full loading of the page with all its components (images, CSS, scripts, etc.). This is the time after which the page becomes available for user interaction.
Google pagespeed
The most common tool. Some recommendations are useful, but they are averaged for all sites, do not take into account the individual characteristics of the site and are not all feasible, besides, they often do not show the real download speed, it happens that the indicator is above average (70-80), but visually for users, the page opens for a long time anyway, so it is not worth relying only on these recommendations.
Site Admin panels
The most accurate measurement tool, because it takes into account the specifics of the work of this particular site. Unfortunately, not all CMS have such a tool. 1C-Bitrix and HOSTCMS - fortunately, they do. I especially want to praise Bitrix for their "Performance Monitor". The assessment is carried out according to a set of criteria, including hosting characteristics, the presence of development or configuration problems, the user part, etc.
Third-party services
One of the most famous is the built-in tool in the browser console - in Chrome, press F12 and go to the Network tab. The service is also visual tools.pingdom.com
YANDEX METRICA
The most universal method of measurement, because it is independent of admins, and, most importantly, stores the measurement history, so you can always check "how it was" and "how it became".
What leads to slow operation of the site
Programming errors
They are allowed already at the stage of website development or during its "optimization". For example, the connection of scripts and styles in the template - the connection code was non-standard, the standard was connected, the loading time of styles and scripts was reduced.
System Configuration Features
The use of individual components or settings can reduce performance at times. The work of the site is slowed down by the incorrect organization of information blocks, the use of a large number of aggregating samples, etc.
Suboptimal use of the site
An administrator or content manager may upload images that are too "heavy" and if their compression is not performed automatically, page loading will slow down.
Incorrect choice of hosting or tariff
Reduced site performance, slow loading of its pages, insufficient performance are often associated with hosting.
Caching Settings
Optimization of caching settings helps to save server resources and maintain a normal level of site performance even with high traffic or during peak load periods.
An additional tab for posting information about services, delivery or other important content. This will help you answer the buyer's questions and clear his doubts about the purchase. Use it at your own discretion.
You can remove it or return it back by changing one checkbox in the component settings. Very comfortably.
