Keyword in Title Tag: Writing keywords in the title tag were more preferable in the past. But now it is not that important as it used to. But it remains an important feature of on-page SEO signal
Title Tag Starts with Keyword: According to Moz, title tag keywords that are on the first rather than on end perform a good job.
Keyword in Description Tag: Your description tag can be a cause of the good click-through-rate. But according to sources, Google does not use the description tag for ranking
Keyword Appears in H1 Tag: According to the study of one correlation, Google uses the H1 tag as the second title tag, which is also known as a secondary relevancy signal
TF-IDF: If a site uses a certain word again and again, then it is the clue word, which means the site is about that word. Google also uses a version of TF-IDF
Content-Length: Content length is also very important. Long content is more preferable because they cover more as compared to the short one
Table of Contents: When content is written according to the linked table, it will be useful for Google to read such content
Keyword Density: Keyword Density is a feature of SEO, but it is not very popular, then it was in the past. But it can provide some edge, but going overboard with it can have a bad influence on the site.
Latent Semantic Indexing Keywords in Content (LSI): Keywords which have a double meaning like Apple the company and Apple the fruit Latent Semantic Indexing will help with these words
LSI Keywords in Title and Description Tags: This keyword also helps Google to differentiate between double meaning words
Page Covers Topic In-Depth: A site that covers every single detail likely to have more ranking than the site which has less detailed content. There is a relationship between the depth of topic coverage and Google rankings.
Page Loading Speed via HTML: Many sites have very fast speeds. Google, Bing, and many other popular sites have determined fast speed and used page speed as a ranking factor. SEO spiders can determine your speed by HTML coding
Page Loading Speed via Chrome: If a person opens some site. Google can determine how much time the loading takes through chrome data
Use of AMP: AMP is also known as Accelerated Mobile Pages. AMP is used for the ranking in mobiles for Google News Carousel. But it cannot be defined as a direct ranking factor
Entity Match: If the entity of the page also matches with the content of the page, then it will cause a high ranking.
Google Hummingbird: keywords help Google to understand better, but algorithm change allows Google to go beyond the keywords. Google Hummingbird helps Google to understand the content better in a better way of site
Duplicate Content: The duplicity of the content can cause a bad influence on SEO.
Rel=Canonical: When the site used this tag properly. This tag will cause Google to penalize the site for identical content
Image Optimization: Images plays an important role because images send SEO relevancy signal through file name, caption, etc.
Content Recency: Google had updated this feature, which will help the user to determine when was the last time the site was updated.
The magnitude of Content Updates: If you consider removing or adding a new section, then considering a changing and switching words order could be more preferable. This is also considered as a fresh factor.
Historical Page Updates: If the site is updated on a regular basis. It can play a very important part of the site because if a site is updated regularly or after one or maybe weekly updates, it can play a part in the freshness factor.
Keyword Prominence: Using keywords effectively can bring a high ranking to the page. If the page uses a target keyword in the first 100 words, then this will bring more high-ranking.
Keyword in H2, H3 Tags: If your site made H2 and H3 as a subheading. It will not be very effective. It could be a sign of a weak relevancy signal.
Outbound Link Quality: According to some recent studies, it has been supported that linking out to authority sites benefits convey trust signals to Google, and many SEO tends to believe that.
Outbound Link Theme: Google also uses the page which you attach to your page as a relevancy signal. For example, if your page is about the cars and you attach a movie-related relevancy link with your page, then Google will know that you are talking about a car’s movie, not about the automobile
Grammar and Spelling: According to some sources, it is not that important, but according to some, proper grammar and spelling play an important role as a quality signal.
Syndicated Content: If the content of the page is a copy from some other page and the content is not original, then it is not going to rank high from an indexed page or, in some cases, not get indexed at all
Mobile-Friendly Update: This update is for mobiles, also known as a “Mobilegeddon.” This feature is for those pages that optimized their mobile properly.
Mobile Usability: A website that is easily accessible to the mobile user may have a type of edge in Google’s “Mobile-First Index”
“Hidden” Content on Mobile: According to Google, hidden content is okay because it doesn’t weigh as much as the fully visible content. But its critical content should be visible.
Helpful “Supplementary Content”: Helpful content of any site is considered as a good quality of that page and can also be a source of a high ranking. Examples of this type of content are loan interest, currency converts, and more
Content Hidden Behind Tabs: Does it is necessary for the user to click on the tab in order to get to know about the content of that page. But Google has stated that this content may not be indexed
The number of Outbound Links: Page ranking can be badly affected by too many outbound links, and it can leak page ranking
Multimedia: According to studies which are found by some sources states that multimedia and ranking of a site may be related to each other. Multimedia can be a sign of the good content quality signal
Number of Internal Links Pointing to Page: The page which has interlinks with the other pages shows that how important is that page
Quality of Internal Links Pointing to Page: A page that has internal links with other pages that have low ranking is important, but it is not as effective as that the page has internal links with the authoritative page
Broken Links: A page that has broken links on their page can be a sign of spam, a neglected page. Google uses this link to know about the quality of that page
Reading Level: Google also records the reading level of pages, but what Google does with that information? According to some sources, reading level may be connected with ranking level, but some others say that it may be concerned with the content mills
Affiliate Links: Affiliate Links are also related to ranking, but too many affiliate links can have a bad influence on your site ranking. To check the quality signals, Google pays attention to those sites to know about whether they have thin affiliate links
HTML errors/W3C validation: According to many of the SEO, good coding is also related to the good quality signal and ranking. As compared to bad coding and errors in HTML may be a sign of poor quality signal site
Domain Authority: A site that has an authoritative domain will definitely have a high ranking. Unlike a site that has less authoritative domain will definitely have less ranking
Page’s PageRank: A page that has a lot of authority links tends to have more have ranking than the page that has less authority has less ranking
URL Length: URL length can also cause an effect on SEO. According to some studies, short URLs are much more preferable than long ones.
URL Path: Pages that are away from the homepage are not so preferable to the pages which are preferable to the homepage. This will increase their boost.
Human Editors: According to some sources which are never confirmed that Google has listed a patent that helps the editors to influence SEO.
Page Category: Page category can also boost the page. A page that appears on its related category list may boost its relevancy signal. But a page that appears on an unrelated category may not get the boost.
Word Press Tags: Word Press tags also act as relevancy signals. To improve and impress SEO, it is necessary to link one content to another and group of the post to each other
Keyword in URL: Keyword in a URL is not a big of a deal, and it boosts up the ranking a little bit, but still, it is a ranking factor and relevancy signal
URL String: URL String can provide the thematic signal to Google to understand what the page is about
References and Sources: According to the Google Quality Guideline, while checking any page, the reviewer should always look at the sources and references of the page. This could be a sign of a good quality signal. This is where authoritative links are very important. But however, Google states that Google does not consider external links as a ranking factor
Bullets and Numbered Lists: This is another ranking factor that Google agrees with. If the content of any site is written in bullets and numbered lists, this will likely increase its ranking because, in this way, it is easy to read but don’t overuse them. This is also called ordered and unordered list
The priority of Page in Sitemap: We can understand the priority of any page by clicking on the page has given through the sitemap.xml file, and this may increase ranking
Too Many Outbound Links: If the page has too many outbound links. This may detract from the main content.
UX Signals from Other Keywords Page Ranks for: Keywords play an essential role in any website ranking. If a site uses other keywords and that keyword help that site to the high ranking. It may give a Google internal sign of quality. In fact, Google looks into that page in which user seems to appreciate similar inquiries
Page Age: Although Google prefers new content, an old page that modernizes can overwhelm the new page.
User-Friendly Layout: Using a friendly layout can help the content ranking. If the quality of the page is highest, then the page layout can help the page content to become visible to more.
Parked Domains: Parked domain is a domain name that is registered without any email or website. In 2011, Google reduced the search visibility of these domains
Useful Content: As mentioned by Backlink reader Jared, Google “may distinguish between useful and quality content.”