Lessons
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Introduction
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Search engine optimization
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Broken links
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Missing CSS files
Missing images
Missing JavaScript files
Broken links
Beautiful page 404
- Site map
- Micro-markup
- Robots.txt
- References
- Text
- Duplicates
- Basic
- Pictures
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Broken links
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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
- Web Application Manifest
- Favicons
- Basic
- Text readability
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Security
- Encrypted connection
- Exploits
- Vulnerabilities
Missing CSS files
The CSS language was developed specifically to describe the appearance of web pages. With its help, developers specify the color, font, size and fat content of the text or the size, frame, background image of the block. CSS contains more than 600 properties.
Problems with downloading a file are easily noticed by the broken structure of the site.
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