How to boost loading of the page header
How a website header should look like
However, as of 2018 mobile page averagely load for about 15 seconds. For this reason, most websites lose customers due to too slow loading of the mobile version.
That's why it is critical that all content placed on the first screen, in particular, the area that the user sees first is loaded quickly. The website header is displayed in this area; thus, it must be composed in such a way that it doesn't slow down the page loading.
In case of commercial projects, the following information is usually added to the website header:
- main menu;
- company logo and advertising slogan;
- contacts: it must include a phone number; you can also add e-mail, messenger usernames, and links to social network communities;
- working hours;
- thematic image or an advertising banner; it is necessary to take into account the format and size of the image so that it doesn't slow down the loading speed;
- links to sections related to terms of delivery, payment, return and warranty service;
- key conversion buttons: order a callback or subscribe to news:
Loading website header: ways to boost it
Load JS scripts last of all
You can implement this using the special extsrc.js library, developed by Google specialists, to ensure that all scripts are loaded after the page is displayed to the user. First, you need to download this script to your server and connect it to the HTML code of the page. After that, add all the scripts in the following format:
For those scripts that don't explicitly use the document.write method, you can use asyncsrc = "url / some-js-file.js" to make loading even faster.
CSS file transfer
Deleting unnecessary plugins and reducing code
Optimization of connected fonts
- It's unnecessary to load many fonts, and it's desirable to limit the number of available style options for each font;
- it is recommended to divide fonts into subsets;
- well-designed loading of an optimized font allows you to increase the page processing speed. To boost font rendering, you can use the Font Loading API script interface, which allows you to change the initial settings for delayed loading:
What images to use on the website header
For raster images without bulk details would be ideal to use the JPEG2000 format, which ensures the best image quality even after compression. If you need to add a picture that has many details or transparent background, you should use PNG. For vector images, the SVG format is suitable, which can be compressed through GZIP. Animated images are saved with the GIF extension.
You can compress the image size by removing digital junk: unnecessary metadata, as well as compressing the file or changing its format. You can do this in various online tools, for example, the Google service Squoosh.app:
Plugins that speed up a website loading
How to check a website loading speed
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