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
- Web Application Manifest
- Favicons
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Mail
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SPF DNS server record
DMARK DNS server record
MX record of the DNS server
Reverse DNS record
- Basic
- Text readability
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Security
- Encrypted connection
- Exploits
- Vulnerabilities
SPF DNS server record
By purchasing a domain, you can manage DNS records. One of them is SPF.
It tells you which servers have the right to send email on behalf of your domain. Simply put, in the “sender” field, specify your address.
Service for generating DNS records.
Any comments or additions? Send us an email admin@site-alarm.com .
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