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
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Bugs
- Code
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Availability
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AAAA DNS server record
IPv6 connection
- Server
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Convenience
- Social networks
- Web Application Manifest
- Favicons
- Basic
- Text readability
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Security
- Encrypted connection
- Exploits
- Vulnerabilities
IPv6 connection
There are 2 types of IP addresses:
- Ipv4 looking like “127.0.0.1”.
- IPv6 looking like “2001:db8::ff00:42:8329”.
We received an IPv6 address from the DNS service and tried to connect on port 80 to your server. He has no access.
Some Internet users have only an IPv6 address. They won’t be able to visit your site.
Any comments or additions? Send us an email admin@site-alarm.com .
Check your website