Lessons
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Introduction
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SEO
- Snippet CTR
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Indexing
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Headings H1-H6
Images have the alt attribute.
The Title attribute of links
Splitting the page into HTML5 sections
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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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
- Caching
- Showing the first content
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File size
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Minification of CSS to reduce its volume
Server GZip compression function
Minification of the embedded JavaScript code of the page
Acceptable size of the HTML 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
The total size of all images on the page
Unused CSS code
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
Unused JavaScript code
Cropping monophonic fields in images
Using the WebP format in images
Too high-quality images without using compression
Suitable video bitrate
Excessively large images
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Slow files
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HTML code generation time
Title "Keep alive"
Optimal time to download files from the server
Using the modern HTTP2 protocol to speed up the site
Adding lazy loading
Long JavaScript code execution time
Time to download files from the server under load
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
Blocking files
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Number of network requests
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Mobile adaptation
- Broken layout
- Compliance with guidelines
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Software errors
- Code
- Mail operation
- Availability
- Server software
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UX User Experience
- Text readability
- Logic and convenience of the interface
- Visual defects
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Integration with programs
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Phones without a clickable link to start a call quickly
Links for Email addresses
Manifest validation.json with a list of favicons
Snippets of the site when sending links in social networks and instant messengers
Tag for specifying a large favicon
The BrowserConfig file
Apple touch bar icon for Mackbook pro
Favicon.ico file
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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 software
Headings H1-H6
The H1-H6 tags are used to specify page headings and subheadings. It is extremely important to use the code of the type <h1>, <H2>, <H3>, and not the tag of the type <div class=”page-title”>. This will make it easier for search engine robots to identify the title. In addition, the modes of reading and audio playback of browser texts are used for these tags.
From the headings you can make an annotation to the article for quick familiarization with the contents and easy navigation.
Here is a list of rules to follow:
- Use the H1-H6 headers only to structure the page content. Do not use them in the header, basement, navigation, just in the interface. The task of headings is to divide the text into logical parts. It is inappropriate to use the H1-H6 tags to highlight the headers of pop-up windows, functional blocks (for example, the name of a product filter group), and interface elements (for example, form headers). This way you will only complicate the analysis of your page by search engine robots.
- The H1 header is mandatory, must be the only one and follow before all other headers. Also, it should be different from the title page due to the fact that they have different tasks. The page title is often used as the snippet title in search engine results. Therefore, his task is to motivate a person to click on a snippet and go to the site. The H1 header is the first thing a person reads when entering the page. His task is to captivate the visitor so that he stays on the page.
- There should not be much text before the H1 header. This is almost always the first text found on the page, with the exception of the site header, navigation, and sidebars. Users, having opened the link, are looking for the main title of the page in order to understand if they are in the right place. If you place a large amount of text in front of the title, you will confuse the user with this.
- All H1-H6 headings should contain only text without pictures, links and other things. The text should be informative, not too long (up to 70 characters), start with a capital letter and not end with a period.
- Observe the hierarchy of headings. H2 should be followed by the next heading H3, not H4 or H6.
- The h1 header must be at least 10 characters long. It contains the unique selling offer of the page. And one word never describes it.