Your HTML title tag appears in browser tabs, bookmarks and in search result pages.

Make your title tags clear, concise (65 characters, 200-569 pixels) and include your most important keywords.

Check the title tags for thousands of pages at once using Site Crawl.

Great, your meta description contains between 70 and 160 characters spaces included (400 - 940 pixels).

A good meta description acts as an organic advertisement, so use enticing messaging with a clear call to action to maximize click-through rate. They allow you to influence how your web pages are described and displayed in search results.

Ensure that all of your web pages have a unique meta description that is explicit and contains your most important keywords (these appear in bold when they match part or all of the user’s search query).

Use WooRank's Site Crawl to check thousands of pages for meta descriptions that are too long, too short or duplicated across multiple web pages.

HTML header tags (or simply header tags) differentiate between headings, subheadings and the rest of the content on the page.

Your website either does not currently use HTML header tags or is using too many. Use keywords in your headings with your most important keywords in the top level and be sure to maintain the <H1> to <H6> hierarchy.

While it is important to ensure every page has an <H1> tag, only include more than one per page if you're using HTML5. Instead, use multiple <H2> - <H6> tags.

This data represents the words and phrases that your page appears to be optimized around. We use what’s called “natural language processing" (NLP), which is a form of artificial intelligence that allows computers to read human language, to do this analysis.

The numbers next to each word or phrase represents how often we detected them and their variants on the page.

Are these the keywords you want to target for your page? If so, great! Track your site’s rankings in Google search results using WooRank’s Keyword Tool.

If these keywords aren’t relevant to your page, consider updating your content to optimize it for your target keywords.

Alternative text allows you to add a description to an image. Since search engine crawlers cannot see images, they rely on alternative text attributes to determine relevance to a search query. Alternative text also helps makes an image more likely to appear in a Google image search and is used by screen readers to provide context for visually impaired users.

It looks like most or all of your images have alternative text. Check the images on your website to make sure accurate and relevant alternative text is specified for each image on the page.

Try to keep your alternative text to a simple, one-sentence description of what's in the image.

Links pass value from one page to another. This value is called 'link juice'.

A page's link juice is split between all the links on that page so lots of unnecessary links on a page will dilute the value attributed to each link. There's no exact number of links to include on a page but best practice is to keep it under 200.

Using the Nofollow attribute in your links prevents some link juice, but these links are still taken into account when calculating the value that is passed through each link, so using lots of NoFollow links can still dilute PageRank.

Check your site's internal linking using Site Crawl.

Right now either www.huuthanhvn.violet.vn or huuthanhvn.violet.vn is failing to resolve properly or returns a 404 error. You use the rel="canonical" tag to tell search engines which is your preferred version and use a 301 redirect to divert traffic from your secondary domain.

A robots.txt file allows you to restrict the access of search engine crawlers to prevent them from accessing specific pages or directories. They also point the web crawler to your page’s XML sitemap file.

Your site currently has a robots.txt file. You can use Google Search Console's Robots.txt Tester to submit and test your robots.txt file and to make sure Googlebot isn't crawling any restricted files.

See the pages you've disallowed with your robots.txt file with Site Crawl.

We checked the robots.txt file for violet.vn but couldn't find an XML sitemap. Specifying the location of your XML sitemaps in your robots.txt file ensures that search engines and other crawlers find and access it easily each time they access your website.

Learn more about adding your XML sitemap to your robots.txt file.

If you haven't created a sitemap yet, we recommend you generate one for your site and submit it through both Google Search Console and Bing Webmaster Tools. Usually, your XML sitemap would be found at violet.vn/sitemap.xml

Using underscores in your URL makes it hard for search engines to determine your site's relevance to a search. Google sees hyphens as word separators while underscores are ignored. So the search engine sees https://huuthanhvn.violet.vn/entry/list/cat_id/547736 as all one word. Use hyphens in your URLs instead: https://huuthanhvn.violet.vn/entry/list/cat-id/547736.

We've detected underscores in your URLs. Change underscores to hyphens to maximize your SEO.

This is how your website appears when displayed on different mobile devices.

With more than half of all Google search queries originating on a mobile device, it is important to make sure your mobile site is optimized for these users.

Keep your URLs short and clean and avoid long domain names when possible.

A descriptive URL is better recognized by search engines. A user should be able to look at the address bar and make an accurate guess about the content of the page before reaching it (e.g., http://www.mysite.com/en/products).

Keep in mind that URLs are also an important part of a comprehensive SEO strategy. Use clean URLs to make your site more "crawlable" by Google.

Resource: Search for a good domain name. If no good names are available, consider a second hand domain. To prevent brand theft, you might consider trademarking your domain name.

Custom 404 error pages are an opportunity for you to reduce customer frustration and link to other pages on your site.

The language you have specified for your website is different than the language detected by Google. Use the META Language Attribute to declare the intended language of your website.

Here are some tips for multilingual websites:

• Define the language of the content in each page's HTML code.
• Specify the language code in the URL as well (e.g., "mywebsite.com/fr/mycontent.html").
• Use hreflang tags to specify language and country for Google, and the "content-language" meta tag to specify the language and country for Bing.

Register the various extensions of your domain to protect your brand from cybersquatters.

Register the various typos of your domain to protect your brand from cybersquatters.

Your server's IP address has little impact on your SEO. Nevertheless, try to host your website on a server which is geographically close to your visitors. Search engines take the geolocation of a server into account as well as the server speed.

Use DNSstuff for comprehensive reports on your server.

Get to know the technologies used for your website. Some codes might slow down your website. Ask your webmaster to take a look at this.

Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.

Popular Analytics Tools Include: Google Analytics, Quantcast™, AdobeAnalytics™, Piwik™, chartbeat™, Clicky™, ClickTale™, etc.

The Doctype is used to instruct web browsers about the document type being used. For example, what version of HTML the page is written in.

Declaring a doctype helps web browsers to render content correctly.

Specifying language/character encoding can prevent problems with the rendering of special characters.

• Use a serious issuer to purchase your SSL certificate
• Redirect all of your HTTP pages to the HTTPS version of your website
• Use HTTP Strict Transport Security (HSTS) in your headers
• Renew your SSL certificate every year, before it expires
• Make sure that all of your content (CSS, etc.) is linked to HTTPS
• Update your XML sitemap to ensure the URLs include HTTPS and update the robots.txt file to reference this version
• Register the HTTPS website in Google & Bing Search Console/Webmaster Tools