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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Minification of CSS to reduce its volume
Minification of JavaScript files
Minification of inline CSS code
Minification of images without loss of quality
Minification of JavaScript files to reduce its volume
Unused CSS code
Data optimization:Image URLs
Animated image format MP4 and WEBM instead of GIF and WEBP
Unused JavaScript code
Using the WebP format in images
Too high-quality images without using compression
Suitable video bitrate
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Reducing requests
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An overabundance of small pictures
Grouping CSS files
Grouping JavaScript files
An overabundance of font files
Availability of end-to-end CSS, JS files
The presence of a monochrome font
Uploading duplicate files
Using JavaScript facades
Redirecting JavaScript code
Adding lazy loading
Redirect from/to www version
- Fonts
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Loading time
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Acceptable size of the HTML code of the page
HTML code generation time
The total volume of all images on the page
Total loading time
Total page load time.
Display time of the first graphic
Optimal time to download files from the server
Time to download files from the server under load
Blocking files
- Server Settings
- Pictures
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The first content
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The sequence of connecting JavaScript files
Font display mode
Setting up a pre-connection
Removing lazy loading
Long JavaScript code execution time
File upload delayed or on demand
The server is located in the same country where the users of the site live
Requests to another country that cause page loading to be blocked
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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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Manifest validation.json with a list of favicons
- Favicons
- Basic
- Text readability
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Security
- Encrypted connection
- Exploits
- Vulnerabilities
Manifest validation.json with a list of favicons
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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