Lessons
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Introduction
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Search engine optimization
- Broken links
- Site map
- Micro-markup
- Robots.txt
- References
- Text
- Duplicates
- Basic
- Pictures
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Speed
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Minification
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CSS minification
Minification of JavaScript files
Minification of inline CSS code
Minification of images without loss of quality
Minification of JavaScript files
Unused CSS code
Data optimization:Image URLs
Format of animated images
Unused JavaScript code
Using WebP
Image compression is missing
Video bitrate
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Reducing requests
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An overabundance of small pictures
Ungrouped CSS files
Ungrouped JavaScript files
An overabundance of fonts
Availability of end-to-end CSS, JS files
The presence of a monochrome font
Uploading duplicate files
Using JS facades
Redirecting JavaScript code
Adding lazy loading
Redirect from/to www version
- Fonts
- Loading time
- Server Settings
- Pictures
- The first content
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Minification
- Mobility
- Bugs
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Convenience
- Social networks
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Web Application Manifest
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Validation of Manifest.json
- Favicons
- Basic
- Text readability
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Security
- Encrypted connection
- Exploits
- Vulnerabilities
Validation of Manifest.json
The manifest file is used by browsers, Android devices, the Windows operating system, and many other programs, applications, and web services. This is the main source of graphic information about your site. Thanks to him, other systems know how to beautifully display your site in their interface.
It looks like this:
{
"name": "",
"short_name": "",
"icons": [
{
"src": "\/favicons\/24x24.png",
"sizes": "24x24",
"type": "image\/png"
},
...
],
"theme_color": "#FFFFFF",
"background_color": "#FFFFFF",
"display": "standalone"
}
Assigning fields:
- name — the name of your site.
- short_name is the abbreviated name of your site.
- icons — a list of icons.
- theme_color — the main color of the theme. Most often, the color is the companion of your main corporate color.
- background_color — the background color on which the icon from icons looks good.
- display — defines the preferred display mode of the application. Standalone is recommended.
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