Measures 151373 SEO Factors

149651 Built-In SEO Factors

140434 On-page SEO Factors

9217 Google Maps SEO Factors for Local SEO

1722 SEO Factors from APIs

147 API SEO Factors for off-page SEO like backlinks and referring domains.

[ Ahrefs, SEMRush, DomDetailer, SpyFu APIs ]

1575 Technology Stack SEO Factors

[ Wappalyzer API ]

The Cora Shared Data contains over 300 million SEO factor measurements and grows hourly.

Google Maps and Bing Factors are not yet available for viewing but will be coming soon!
Aggregate SEO Weather Top SEO Factors - Aggregate SEO Weather

TOP SEO Factors for 2026-07     previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.2975523170 %78 %
2Number of Top 100 Shared Factors Used   Diversity-0.25382785 %90 %
3Number of Top 200 Shared Factors Used   Diversity-0.25503685 %90 %
4Number of Top 50 Shared Factors Used   Diversity-0.25161185 %90 %
5Variations in H1-H6 Tags   Relevancy-0.242591045 %82 %
6Entities in Sentences   Relevancy-0.2495413955 %93 %
7Entities in the HTML Tag   Relevancy-0.24105014361 %94 %
8Number of P Tags   Size-0.242183456 %88 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.24217844 %83 %
10Number of Heading Tags   Size-0.24591958 %85 %
11Variations in P Tags   Relevancy-0.2440147046 %88 %
12Entities in H2 Tags-0.2454737 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.24123543 %84 %
14Load Time Milliseconds   Performance-0.2325940214072 %86 %
15Word Count   Size-0.2312278136671 %87 %
16Number of Referring Domains   Authority-0.237874431 %87 %
17Clean Text Kilobytes   Size-0.232841357 %84 %
18Number of Unique Variations Used   Diversity-0.23591166 %81 %
19Number of Distinct Entities Used   Diversity-0.23592765 %92 %
20Unabridged Word Count   Size-0.2356122202571 %86 %
21Number of H2 Tags   Size-0.2329650 %84 %
22Number of Backlinks   Authority-0.23197596277331 %88 %
23Variations in A Tags   Relevancy-0.2339775947 %82 %
24Variations in Search Result Document File Name   Relevancy-0.237136 %83 %
25Number of Factors Used   Diversity-0.2328316685 %85 %
26Variations in Div Tags   Relevancy-0.233158542856 %87 %
27Entities in Title Tag   Relevancy-0.2310353 %91 %
28Variations in LI Tags   Relevancy-0.2315263545 %86 %
29Has JSON-LD Schema Markup   Relevancy-0.231138 %77 %
30Has Meta Charset   Technology-0.231158 %79 %
31Number of Do Follow Backlinks   Authority-0.23188984256929 %86 %
32Number of Images   Size-0.221652458 %86 %
33Entities in H1 Tags-0.229240 %90 %
34Number of DoFollow Links   Authority-0.2241912165 %86 %
35Variation Count in Top 30KB   Relevancy-0.2254786950 %80 %
36Number of Links   Authority-0.2245212465 %86 %
37Number of HTTPS Links   Authority-0.2241912265 %86 %
38Number of HTML Tags   Size-0.22417296272 %87 %
39Number of Internal Links   Authority-0.2239011064 %86 %
40Number of H1 Tags   Size-0.226153 %87 %
41Number of Images with ALT Text   Size-0.22851653 %86 %
42Has Entities in H2 Tags   Relevancy-0.221138 %85 %
43Has Entities in H1 Tags   Relevancy-0.221140 %85 %
44Variations in Search Result URL Path   Relevancy-0.228239 %82 %
45Variations in H1 Tags   Relevancy-0.2211138 %80 %
46Variations in H2 Tags   Relevancy-0.22117432 %81 %
47Variations in Body Tags   Relevancy-0.2190453115963 %85 %
48LSI Words in Sentences   Relevancy-0.21438656851 %91 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.2113453944 %86 %
50Number of Facebook Pages   Authority-0.215241 %87 %
51Variations in A Tag HREF Attributes   Relevancy-0.2122066243 %86 %
52Entities in H3 Tags-0.2151830 %93 %
53Number of No Follow Backlinks   Authority-0.212628126021 %83 %
54Variations in HTML Tags   Relevancy-0.2190453113562 %88 %
55Search Result Number of Dirs in Path   Other-0.213266 %77 %
56Number of External Links   Authority-0.211351460 %87 %
57Number of Includes   Technology-0.21602566 %83 %
58Average Words Per Sentence   Size-0.212873161 %84 %
59Flesch Kincaid Reading Grade Level   Other-0.216178 %87 %
60Number Of JSON-LD Types   Relevancy-0.211511241 %82 %
61Number of DoFollow External Links   Authority-0.21341259 %88 %
62Number of HTML Comments   Size-0.23664656 %83 %
63Leading Variations in H1, H2, and H3 Tags   Relevancy-0.211230 %82 %
64Leading Variations in H1-H6 Tags   Relevancy-0.218232 %82 %
65Variations in Sentences   Relevancy-0.235347555 %87 %
66Variations in Absolute URLs   Relevancy-0.243999247 %84 %
67Number of H3 Tags   Size-0.237843 %87 %
68Number of Images without ALT Text   Size-0.2113942 %85 %
69Term Frequency   Relevancy-0.26361 %85 %
70Variations in Span Tags   Relevancy-0.28341736 %88 %
71Variations in the Canonical URL   Relevancy-0.242239 %85 %
72Number of CSS Includes   Technology-0.225857 %76 %
73Variations in ALT Attributes   Relevancy-0.2170833 %78 %
74Variations in Main Tags   Relevancy-0.21984818327 %85 %
75Clean Keyword Density in the HTML Tag   Relevancy-0.2195654 %74 %
76Variations in Nav Tags   Relevancy-0.2118169634 %85 %
77Percentage of DoFollow Links   Authority-0.2997864 %80 %
78Number of Social Pages   Authority-0.1923547 %85 %
79LSI Words in H2 Tags   Relevancy-0.191931639 %89 %
80Variations in First 100 Words   Relevancy-0.19172852 %83 %
81Uses JSON-LD name   Other-0.191138 %77 %
82Search Result Domain is .com, .net, or .org   Other-0.19117 %77 %
83Search Result Domain is .com   Other-0.19117 %75 %
84Variations in Search Result URL   Relevancy-0.1923246 %79 %
85Variations in H3 Tags   Relevancy-0.19131425 %82 %
86Number of Forms   Technology-0.199238 %77 %
87Has Meta Viewport   Technology-0.191166 %75 %
88Number of Instagram Pages   Authority-0.1921332 %83 %
89Number of Questions In Headings   Size-0.197225 %82 %
90Variations in Footer Tags   Relevancy-0.1948964028 %81 %
91Entities in Meta Description Tag   Relevancy-0.1914344 %85 %
92Number of Facebook Accounts   Authority-0.192119 %79 %
93Number of Sentences   Size-0.1976612869 %84 %
94LSI Words in H1 Tags   Relevancy-0.1916441 %89 %
95Search Result Uses HTTPS   Other-0.191171 %69 %
96Has Entities in H3 Tags   Relevancy-0.181131 %86 %
97Title Tag Has Entities   Relevancy-0.181152 %79 %
98Has Form   Technology-0.181137 %75 %
99Has Apple Touch Icon   Technology-0.181135 %73 %
100Number of LinkedIn Pages   Authority-0.183121 %79 %
101Variation Density in Top 30KB   Relevancy-0.18303550 %76 %
102Number of Social Accounts   Authority-0.185229 %85 %
103Headings Has Question   Other-0.181125 %79 %
104Has Canonical URL   Authority-0.181156 %68 %
105Percentage of DoFollow External Links   Authority-0.18321257 %79 %
106Is Article Page   Other-0.181130 %75 %
107Percentage of DoFollow Internal Links   Authority-0.18926863 %77 %
108Variations in Section Tags   Relevancy-0.1816063126 %87 %
109Variations in the Title Tag   Relevancy-0.1811251 %77 %
110Uses JSON-LD url   Other-0.181135 %75 %
111Inline CSS Kilobytes   Size-0.181935754 %82 %
112Search Result Domain Length   Size-0.18221671 %77 %
113Search Result Host Length   Size-0.18221671 %77 %
114Variations in OpenGraph Description   Relevancy-0.1832238 %77 %
115Number of JavaScript Includes   Technology-0.18481767 %83 %
116Uses JSON-LD description   Other-0.181130 %73 %
117Page Size Kilobytes   Size-0.1899431769 %66 %
118Variations in Script Tags   Relevancy-0.182198624551 %83 %
119Variations in OpenGraph Title   Relevancy-0.189142 %73 %
120Uses Schema organization   Other-0.171125 %73 %
121Variations in Meta Description   Relevancy-0.1739242 %78 %
122TF/IDF   Relevancy-0.171144 %81 %
123Has Privacy Policy   Trust-0.171144 %70 %
124Number of Absolute URLs   Authority-0.17194825470 %73 %
125LSI Words in Title Tag   Relevancy-0.1722553 %84 %
126LSI Words in H3 Tags   Relevancy-0.171701833 %89 %
127Variations making whole A Tags   Relevancy-0.175122 %80 %
128Variations Making Whole LI Tags   Relevancy-0.175119 %79 %
129Has FavIcon   Technology-0.171158 %71 %
130Number of Questions   Size-0.17621151 %74 %
131Variations in Search Result Display URL   Relevancy-0.1714266 %75 %
132Variations in Search Result Link Text   Relevancy-0.1714266 %75 %
133Has Meta Description   Relevancy-0.171151 %64 %
134Uses JSON-LD Organization   Other-0.171123 %74 %
135Variations Making Whole Span Tags   Relevancy-0.175115 %79 %
136Number of H4 Tags   Size-0.1731325 %82 %
137Uses JSON-LD ListItem   Other-0.171125 %75 %
138Leading Variations in H1 Tags   Relevancy-0.171118 %76 %
139Has Contact Page   Trust-0.171149 %70 %
140Uses JSON-LD BreadcrumbList   Other-0.171124 %75 %
141Has Schema Markup   Relevancy-0.171149 %66 %
142Word Count in Meta Description   Size-0.17361851 %72 %
143Uses Schema name   Other-0.161144 %66 %
144Uses Schema datemodified   Other-0.161121 %72 %
145Uses JSON-LD datePublished   Other-0.161123 %72 %
146Uses JSON-LD dateModified   Other-0.161120 %73 %
147Number of US Phone Numbers   Trust-0.162121031 %84 %
148Meta Description Length   Size-0.1623810952 %73 %
149Inline JavaScript Kilobytes   Size-0.1656113365 %68 %
150Variations in Strong Tags   Relevancy-0.16129318 %85 %
151LSI Words in Meta Description Tag   Relevancy-0.1623843 %86 %
152Variations in Article Tags   Relevancy-0.1611511917 %80 %
153Is OpenGraph Type Article   Technology-0.161122 %70 %
154Has US Phone Number   Trust-0.161130 %77 %
155Search Result URL Length   Size-0.16946684 %59 %
156Title Length   Size-0.161575169 %73 %
157Uses Schema webpage   Other-0.161123 %71 %
158Leading Variations in Title Tag   Relevancy-0.161122 %76 %
159Number of Questions In H2 Tags   Size-0.164116 %80 %
160Uses JSON-LD ImageObject   Other-0.161122 %75 %
161Meta Description Tag Has Entities   Relevancy-0.161143 %74 %
162Has OpenGraph Type   Relevancy-0.161149 %68 %
163Uses JSON-LD WebPage   Other-0.161122 %72 %
164Title Word Count   Size-0.1625869 %73 %
165Variations in the last 100 words   Relevancy-0.16179540 %75 %
166Has Terms of Service   Trust-0.161132 %65 %
167Variations in Search Result Summary   Relevancy-0.1648367 %71 %
168Number of Twitter Accounts   Authority-0.152114 %80 %
169Uses Schema url   Other-0.151141 %65 %
170Search Result Summary Length   Size-0.1516114883 %77 %
171Is Store Page   Other-0.151137 %65 %
172Number of Prices   Size-0.15373812957 %78 %
173Uses Schema description   Other-0.151134 %61 %
174Number of Questions In H3 Tags   Size-0.155112 %79 %
175Leading Variations in H2 Tags   Relevancy-0.155116 %80 %
176Has OpenGraph Image   Relevancy-0.151143 %69 %
177Entities in H4 Tags-0.1511214 %88 %
178Has Google Verify   Technology-0.151114 %71 %
179Variations in Class Attributes   Relevancy-0.1597049319 %80 %
180Uses Schema datepublished   Other-0.151126 %59 %
181Is Purchase Page   Other-0.151139 %57 %
182Has DocType Tag   Technology-0.151159 %60 %
183Has Meta Twitter Card   Authority-0.151142 %66 %
184Uses Schema website   Other-0.151123 %65 %
185Number of Email Addresses   Trust-0.1515433 %79 %
186Uses Schema listitem   Other-0.151129 %60 %
187Variations making whole H1-H6 Tags   Relevancy-0.152112 %79 %
188Uses JSON-LD inLanguage   Other-0.151121 %68 %
189Uses Schema inlanguage   Other-0.151121 %67 %
190Uses Schema breadcrumblist   Other-0.151129 %61 %
191Uses JSON-LD item   Other-0.151118 %73 %
192Variations making whole H1, H2, and H3 Tags   Relevancy-0.151110 %78 %
193Uses Schema imageobject   Other-0.151126 %63 %
194Leading Variations in H3 Tags   Relevancy-0.157112 %78 %
195Has Copyright   Trust-0.141148 %60 %
196Has Meta Robots   Other-0.141119 %66 %
197Uses JSON-LD WebSite   Other-0.141121 %68 %
198Uses Schema item   Other-0.141122 %57 %
199Variations in ID Attributes   Relevancy-0.14758913 %82 %
200Uses Schema product   Other-0.14117 %47 %