Lessons
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Introduction
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SEO
- Snippet's clickability in search engines
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Indexing
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Headings H1-H6
Images have the "alt" attribute.
The Title attribute of links
Content robots.txt
Duplicate "title"
Duplicate "description"
Human-understandable name of the picture
Rules for formatting text on a page
Micro-markup format requirements and recommendations
Validation microdata Google
Human-friendly link format
Errors in Robots.txt
The content of the site map
The site map file
Link formatting requirements
Hreflang tag
"canonical" tag
Spelling of interactive interface elements
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Speed
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Reduce the number of network requests
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An overabundance of small pictures
Grouping CSS files
Grouping JavaScript files
An overabundance of font files
Redirects when uploading files
Availability of end-to-end CSS, JS files
Uploading duplicate files
Using JavaScript facades
Redirecting JavaScript code
Redirect from/to www version
Using sprite technology
The video player is connected correctly
- General assessment
- Configure the server
- Speed up the display of the first content
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Reduce the size of graphic files
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Minification of the embedded JavaScript code of the page
Minification of the embedded CSS code of the page
Minification of images without loss of quality
The total size of all images on the page
Font Optimization
An overabundance of monochrome icons
The presence of a monochrome font
Data optimization:Image URLs
Animated image format MP4, WEBM, SVG instead of GIF and WEBP
Cropping monophonic fields in images
Using the WebP format in images
Too high-quality images without using compression
Suitable video bitrate
Excessively large images
- Server performance
- Fix the locks
- Reduce the amount of code
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Reduce the number of network requests
- Mobile adaptation
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Software errors
- Code
- Mail operation
- Availability
- Server Settings
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Convenience
- Text readability
- Interface
- Visual defects
- Interaction with other programs
- Image Favicon
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Vulnerabilities
- Code
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Server Settings
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Uploading all page files via HTTPS
Strict-https header for increased security
Private access to service files
Encrypted IPv6 connection
Enabled error display in the north
SSL certificate validity
HTTPS Availability
Redirects to protected
Vulnerabilities of a secure SSL connection
HTTP headers for increased security
- Third-party services
Link formatting requirements
Link of the form https://example.com/qa/index.php/56565/./zaglavnye-bukvy-v-url is correct, but it is difficult to read and understand what it means. I don’t want to forward such a link in the messenger. Having received such a link in the message, the user is unlikely to read it because of the bulkiness. Therefore, it will not read the name of the site, which will reduce its recognition.
A link with a Cyrillic link is converted to a long and poorly remembered string.
It is also inconvenient to store such links in notes. They can occupy up to half of the phone screen and it is difficult to understand their purpose from their contents.
To make your links beautiful and easy to read, follow the following guidelines:
- Uppercase characters are missing. Different operating systems handle the case of file names differently. To avoid confusion, do not use uppercase.
- Double characters are missing: slash //, dash –, dots.., underscore __.
- There is no backslash .
- Non-ANCII characters: Cyrillic, emoji and other characters. They will be replaced with a poorly readable string of the form %D0%B0%D0%.
- A link of the form /path/index.php/56565/path/ containing an index file in the middle.
- There are no commands to change directories /./ and /../.
- There is no equal symbol in the path.
Links with the following errors will be ignored by search engines:
- The address is not localhost.
- The address is not IPv4 or IPv6.
- There is no port.
- There is no login and password.
- There are no space characters, line breaks, tabs and carriage translation.