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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Minification of CSS to reduce its volume
Minification of JavaScript files
Minification of inline CSS code
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 and WEBM 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
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Loading time
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Acceptable size of the HTML code of the page
HTML code generation time
The total volume of all images on the page
Total loading time
Total page load time.
Display time of the first graphic
Optimal time to download files from the server
Time to download files from the server under load
Blocking files
- 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
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 computer monitor
Adapting the layout for the tablet
Adapting the layout for the phone
Screenshots for the mini report
How blocks break the page layout
- 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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Security
- Encrypted connection
- Exploits
- Vulnerabilities
Adapting the layout to a computer monitor
If the page is wider than 1920 pixels, then the browser will have a horizontal scroll bar at the bottom. For several decades now, websites have scrolled only up and down, but not left/right. The presence of such scrolling is a sign of problems with the display of the page.
Sometimes left-to-right scrolling may be absent, but at the same time our tool shows its presence. Remember that search engine robots, like our service, determine the screen width programmatically, not visually. Therefore, it is necessary to ensure that the software gives the correct value. To check what information the browser provides about the screen width, run the JavaScript code document.body.scrollWidth in the browser console on your page. It will return the page width in pixels.