SEO-анализ сайта и рекомендации

Here is the SEO evaluation of the website теплострой71.рф based on the provided HTML code:

**1. Page Title**: 8/10
The page title is present and descriptive, but it's not unique and doesn't contain the main keyword.

**2. Meta Description**: 6/10
The meta description is present, but it's not descriptive and doesn't contain the main keyword.

**3. Header Tags**: 7/10
Header tags (H1-H6) are used, but there is only one H1 tag, and it's not descriptive.

**4. Keyword Density**: 5/10
The keyword "утеплитель" is used several times, but the density is not optimal.

**5. Image Optimization**: 4/10
Images are used, but most of them don't have alt tags, and none of them have descriptive file names.

**6. Internal Linking**: 3/10
There are no internal links on the page.

**7. Mobile-Friendliness**: 9/10
The page is mobile-friendly, but some elements may not be perfectly optimized.

**8. Page Speed**: 6/10
The page speed is average, but can be improved.

**9. SSL Certificate**: 10/10
The website has an SSL certificate installed.

**10. Meta Robots**: 5/10
The meta robots tag is not present, which can lead to indexing issues.

**11. Canonical URL**: 5/10
The canonical URL is not specified, which can lead to duplicate content issues.

**12. Structured Data**: 8/10
Structured data is used, but it's not comprehensive and doesn't cover all important elements.

**Recommendations:**

1. **Optimize the page title and meta description**: Make them unique, descriptive, and include the main keyword.
2. **Use header tags effectively**: Use multiple header tags (H1-H6) to structure the content and highlight important keywords.
3. **Optimize images**: Add alt tags, descriptive file names, and compress images to reduce page load time.
4. **Improve internal linking**: Add internal links to other relevant pages on the website to improve user experience and search engine crawling.
5. **Enhance mobile-friendliness**: Ensure that all elements are perfectly optimized for mobile devices.
6. **Improve page speed**: Optimize images, minify CSS and JavaScript files, and leverage browser caching to improve page load time.
7. **Add meta robots and canonical URL tags**: Specify the meta robots tag to control indexing and the canonical URL tag to avoid duplicate content issues.
8. **Expand structured data**: Add more comprehensive structured data to help search engines understand the content and provide additional information in search results.

By addressing these recommendations, the website can improve its SEO performance and increase its visibility in search engines.