Lessons
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Introduction
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SEO
- Broken links
- Site map
- Semantic markup
- Robots.txt
- References
- Text
- Duplicates
- Basic
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Pictures
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Images have the "alt" attribute.
Human-understandable name of the picture
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Speed
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Minification
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Minification of CSS to reduce its volume
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
Minification of JavaScript files to reduce its volume
Unused CSS code
Data optimization:Image URLs
Animated image format MP4, WEBM, SVG 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
- Loading time
- 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
No requests to another country that cause page loading to be blocked
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Minification
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Mobility
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Screen support
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Adapting the layout to a Full HD computer monitor
Adapting the layout for a horizontal tablet
Adapting the layout for a horizontal phone
Screenshots for the mini-report
How blocks break the page layout
Adapting the layout to an HD computer monitor
Adapting the layout for a vertical tablet
Adapting the layout for a vertical phone
- Comfort
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Screen support
- Bugs
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Convenience
- Social networks
- Web Application Manifest
- Favicons
- Basic
- Text readability
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Vulnerabilities
- Encrypted connection
- Exploits
- Vulnerabilities
Images have the "alt" attribute.
Images are set in the code with the tag. It can also specify the alt attribute. It will look like this:
“`language-html
“
Alt contains a brief description of the image. This data will be used by search engines to index your images. So, search engines will determine whether there are illustrations on the page that match the user’s request. The content provided with illustrations is more interesting to the user. Search engines understand this, so they show sites with relevant images in the search results above. And they determine the relevance (matching the image to the user’s request) just by the content of the alt attribute.
Also, the alt content is used for indexing and is displayed in the image search results. Image search brings significant traffic to food, fashion, and stock photo niches.
The alt attribute must:
- Contain keywords.
- Be spelling correct.
- Unique to the page. Avoid duplicate alt for different images on the same page.
- Up to 125 characters long.