Measures 146083 SEO Factors

144361 Built-In SEO Factors

135245 On-page SEO Factors

9116 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 2025-11     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-0.2668529178 %86 %
2Number of Top 100 Shared Factors Used   Diversity-0.25392798 %95 %
3Number of Top 200 Shared Factors Used   Diversity-0.25523698 %94 %
4Number of Unique Variations Used   Diversity-0.2429674 %93 %
5Number of Top 50 Shared Factors Used   Diversity-0.24161298 %95 %
6Entities in Title Tag   Relevancy-0.247362 %95 %
7Number of Distinct Entities Used   Diversity-0.23572773 %95 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2320657 %90 %
9Variations in Div Tags   Relevancy-0.2362510269 %95 %
10Variations in H1-H6 Tags   Relevancy-0.2322758 %92 %
11Entities in Sentences   Relevancy-0.2366913165 %96 %
12Entities in the HTML Tag   Relevancy-0.2367013469 %96 %
13Variations in H1 and H2 Tags   Relevancy-0.2310354 %91 %
14Load Time Milliseconds   Performance-0.2310006181679 %93 %
15Variations in Body Tags   Relevancy-0.22179921574 %94 %
16Variations in HTML Tags   Relevancy-0.22179921573 %94 %
17Variations in P Tags   Relevancy-0.221312558 %91 %
18Variations in Sentences   Relevancy-0.221652767 %93 %
19Number of Factors Used   Diversity-0.2233916599 %90 %
20Search Result Domain is .com, .net, or .org   Other-0.22115 %77 %
21Term Frequency   Relevancy-0.224373 %90 %
22Variations in LI Tags   Relevancy-0.221721958 %95 %
23Variations in Search Result URL Path   Relevancy-0.223141 %86 %
24Variation Count in Top 30KB   Relevancy-0.22751658 %91 %
25Clean Keyword Density in the HTML Tag   Relevancy-0.227363 %86 %
26Variations in A Tags   Relevancy-0.211402258 %90 %
27Variations in Search Result Document File Name   Relevancy-0.213138 %89 %
28Variations in the Title Tag   Relevancy-0.213159 %91 %
29Number of Includes   Technology-0.21472674 %86 %
30Search Result Domain is .com   Other-0.21114 %76 %
31LSI Words in Sentences   Relevancy-0.21316977464 %94 %
32Variations in the Canonical URL   Relevancy-0.214142 %89 %
33Variations in First 100 Words   Relevancy-0.2117558 %91 %
34Number of HTML Tags   Size-0.213693110179 %89 %
35Entities in H1 Tags-0.216249 %89 %
36Variations in H1 Tags   Relevancy-0.212148 %89 %
37Leading Variations in H1-H6 Tags   Relevancy-0.217239 %91 %
38TF/IDF   Relevancy-0.21152 %88 %
39Variations in Search Result Link Text   Relevancy-0.23278 %89 %
40Variations in Search Result Display URL   Relevancy-0.23279 %90 %
41Variations in Meta Description   Relevancy-0.24248 %86 %
42Leading Variations in H1, H2, and H3 Tags   Relevancy-0.26237 %90 %
43Number of Forms   Technology-0.213353 %83 %
44Word Count   Size-0.22844139779 %89 %
45Unabridged Word Count   Size-0.24113183579 %91 %
46Variations in A Tag HREF Attributes   Relevancy-0.23233852 %94 %
47Variations in ALT Attributes   Relevancy-0.253839 %87 %
48Clean Text Kilobytes   Size-0.2231269 %90 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.22442252 %93 %
50Variation Density in Top 30KB   Relevancy-0.27254 %86 %
51Number of Images   Size-0.21223269 %90 %
52Variations in H2 Tags   Relevancy-0.29337 %86 %
53Variations in Search Result URL   Relevancy-0.193153 %81 %
54Has Entities in H1 Tags   Relevancy-0.191151 %87 %
55Number of Heading Tags   Size-0.19552268 %86 %
56Entities in H2 Tags-0.1927644 %90 %
57Variations in OpenGraph Description   Relevancy-0.194243 %83 %
58Has Form   Technology-0.191151 %79 %
59Number of CSS Includes   Technology-0.1920968 %86 %
60Variations in Absolute URLs   Relevancy-0.192414554 %91 %
61Title Tag Has Entities   Relevancy-0.191162 %91 %
62LSI Words in Title Tag   Relevancy-0.1916666 %95 %
63Number of Images with ALT Text   Size-0.19632366 %90 %
64Variations in Main Tags   Relevancy-0.193206134 %87 %
65Number of P Tags   Size-0.19983768 %90 %
66Number of HTTPS Links   Authority-0.1941914975 %88 %
67Entities in Meta Description Tag   Relevancy-0.197352 %90 %
68Number of Links   Authority-0.1942215175 %88 %
69Variations in Span Tags   Relevancy-0.1929846 %91 %
70Number of DoFollow Links   Authority-0.1940914475 %88 %
71Number of Internal Links   Authority-0.1938713674 %88 %
72Number of Facebook Pages   Authority-0.196251 %87 %
73Search Result Number of Dirs in Path   Other-0.183270 %83 %
74Variations in OpenGraph Title   Relevancy-0.182148 %85 %
75Variations in Script Tags   Relevancy-0.187617258 %86 %
76Number of External Links   Authority-0.18461572 %87 %
77Percentage of DoFollow Links   Authority-0.18987674 %88 %
78Number of JavaScript Includes   Technology-0.18331775 %85 %
79Leading Variations in Title Tag   Relevancy-0.181129 %85 %
80Average Words Per Sentence   Size-0.182293372 %86 %
81Number of H1 Tags   Size-0.183164 %90 %
82Has JSON-LD Schema Markup   Relevancy-0.181146 %81 %
83Number of HTML Comments   Size-0.183155665 %84 %
84Number of DoFollow External Links   Authority-0.18431370 %89 %
85LSI Words in H1 Tags   Relevancy-0.1815455 %92 %
86LSI Words in Meta Description Tag   Relevancy-0.18351154 %90 %
87Entities in H3 Tags-0.1729738 %93 %
88Exact Matches in the HTML Tag   Relevancy-0.17354822 %82 %
89Leading Variations in H1 Tags   Relevancy-0.171125 %85 %
90Number of Images without ALT Text   Size-0.17601052 %89 %
91Number of H2 Tags   Size-0.1712660 %84 %
92Search Result Host Length   Size-0.17241679 %86 %
93Percentage of DoFollow Internal Links   Authority-0.17896774 %86 %
94Search Result Domain Length   Size-0.17241679 %86 %
95Variations in Footer Tags   Relevancy-0.1733529 %85 %
96Has Canonical URL   Authority-0.171165 %81 %
97Number of Referring Domains   Authority-0.1717087246 %62 %
98LSI Words in H2 Tags   Relevancy-0.17691851 %89 %
99Has Meta Charset   Technology-0.171168 %86 %
100Flesch Kincaid Reading Grade Level   Other-0.175095 %89 %
101Has Entities in H2 Tags   Relevancy-0.171145 %86 %
102Number of Sentences   Size-0.1752912477 %86 %
103Number of Nofollow Links   Authority-0.1644828 %81 %
104Variations making whole H1, H2, and H3 Tags   Relevancy-0.161113 %84 %
105Variations making whole H1-H6 Tags   Relevancy-0.162114 %86 %
106Number of H3 Tags   Size-0.1631954 %83 %
107Percentage of DoFollow External Links   Authority-0.16301069 %87 %
108Variations in H3 Tags   Relevancy-0.1616329 %88 %
109Variations in Meta Twitter Description   Relevancy-0.164122 %77 %
110Variations in Section Tags   Relevancy-0.16911330 %85 %
111Meta Description Length   Size-0.1621711361 %82 %
112Number of Questions   Size-0.16641262 %79 %
113Variations in the last 100 words   Relevancy-0.169240 %82 %
114Variations Making Whole LI Tags   Relevancy-0.165120 %81 %
115Word Count in Meta Description   Size-0.16381861 %82 %
116Inline CSS Kilobytes   Size-0.161694860 %88 %
117Number of Social Pages   Authority-0.1611456 %83 %
118Variations in Nav Tags   Relevancy-0.161651838 %88 %
119Variations in Meta Twitter Content   Relevancy-0.161124 %75 %
120Leading Variations in H2 Tags   Relevancy-0.162118 %83 %
121Variations in I Tags   Relevancy-0.1611320 %85 %
122Has Meta Viewport   Technology-0.161176 %87 %
123Number of Backlinks   Authority-0.1699414408246 %64 %
124Number of Questions In Headings   Size-0.167231 %85 %
125Number of Prices   Size-0.1629628467 %85 %
126Has OpenGraph Type   Relevancy-0.161155 %73 %
127Number of Instagram Pages   Authority-0.168239 %78 %
128Exact Matches in H1-H6 Tags   Relevancy-0.1611113 %83 %
129Has Meta Twitter Card   Authority-0.161145 %67 %
130Number of Absolute URLs   Authority-0.1599028477 %83 %
131Uses JSON-LD name   Other-0.151147 %78 %
132Number Of JSON-LD Types   Relevancy-0.15531250 %86 %
133Has Meta Description   Relevancy-0.151161 %80 %
134LSI Words in H3 Tags   Relevancy-0.151242346 %89 %
135Headings Has Question   Other-0.151131 %79 %
136Entities in H4 Tags-0.158218 %93 %
137Variations in Strong Tags   Relevancy-0.1511322 %81 %
138Number of Do Follow Backlinks   Authority-0.1593514335442 %62 %
139Has OpenGraph Image   Relevancy-0.151148 %67 %
140Has Email   Trust-0.151140 %75 %
141Title Length   Size-0.15764776 %83 %
142Number of Email Addresses   Trust-0.1519439 %85 %
143Search Result Uses HTTPS   Other-0.151179 %89 %
144Search Result URL Length   Size-0.15926399 %67 %
145Page Size Kilobytes   Size-0.1582132478 %83 %
146Number of LinkedIn Pages   Authority-0.153126 %80 %
147Meta Description Tag Has Entities   Relevancy-0.151152 %86 %
148Uses JSON-LD url   Other-0.151144 %80 %
149Title Word Count   Size-0.1513776 %82 %
150Uses Schema organization   Other-0.151132 %73 %
151Exact Matches in Top 30KB   Relevancy-0.1515113 %78 %
152Variations in TITLE Attributes   Relevancy-0.1538535 %84 %
153Has FavIcon   Technology-0.151169 %81 %
154Variations making whole A Tags   Relevancy-0.156124 %81 %
155Uses Schema collectionpage   Other-0.15116 %42 %
156Uses JSON-LD CollectionPage   Other-0.15116 %43 %
157Number of No Follow Backlinks   Authority-0.151967368034 %61 %
158Uses Schema url   Other-0.151151 %74 %
159Percentage of NoFollow Links   Authority-0.1411325 %79 %
160Has Schema Markup   Relevancy-0.141158 %78 %
161Number of US Phone Numbers   Trust-0.146011230 %83 %
162Has Privacy Policy   Trust-0.141158 %79 %
163Uses Schema name   Other-0.141155 %73 %
164Number of Facebook Accounts   Authority-0.142124 %82 %
165Has Meta Twitter Description   Authority-0.141127 %62 %
166Number of Questions In H3 Tags   Size-0.144116 %75 %
167Is Store Page   Other-0.141147 %75 %
168Uses Schema image   Other-0.141120 %71 %
169Exact Matches in Sentences   Relevancy-0.1419214 %82 %
170Has Entities in H3 Tags   Relevancy-0.141139 %85 %
171Number of H4 Tags   Size-0.1412433 %85 %
172Is Purchase Page   Other-0.141151 %75 %
173Has Contact Page   Trust-0.141158 %78 %
174Percentage of NoFollow Internal Links   Authority-0.148217 %77 %
175Variations Making Whole Span Tags   Relevancy-0.143117 %81 %
176Has Terms of Service   Trust-0.141144 %72 %
177Has Meta Twitter Title   Authority-0.141129 %63 %
178Has US Phone Number   Trust-0.141129 %75 %
179Inline JavaScript Kilobytes   Size-0.1458713274 %78 %
180Variations in H4-H6 Tags   Relevancy-0.146114 %84 %
181Uses JSON-LD image   Other-0.141114 %73 %
182Variations in Value Attributes   Relevancy-0.1422211 %82 %
183Variations making whole H1 Tags   Relevancy-0.14119 %83 %
184Exact Matches in Title Tag   Relevancy-0.141112 %74 %
185Has Google Verify   Technology-0.131121 %72 %
186Is Pagination Page   Other-0.131123 %70 %
187Uses JSON-LD Organization   Other-0.131128 %75 %
188Variations in ID Attributes   Relevancy-0.1310210 %81 %
189Leading Variations in H3 Tags   Relevancy-0.135112 %81 %
190Uses JSON-LD ListItem   Other-0.131130 %74 %
191Uses JSON-LD description   Other-0.131133 %72 %
192Is Article Page   Other-0.131137 %73 %
193Number of Social Accounts   Authority-0.134238 %81 %
194Number of NoFollow External Links   Authority-0.1321318 %81 %
195Has Entities in H4 Tags   Relevancy-0.131120 %84 %
196LSI Words in H4 Tags   Relevancy-0.1371727 %90 %
197Number of Questions In H2 Tags   Size-0.133118 %77 %
198Uses Schema listitem   Other-0.131139 %70 %
199Uses Schema website   Other-0.131128 %65 %
200Variations in Article Tags   Relevancy-0.1349922 %78 %