Measures 146646 SEO Factors

144924 Built-In SEO Factors

135788 On-page SEO Factors

9136 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-0.23134533482 %79 %
2Entities in Title Tag   Relevancy-0.227368 %94 %
3Number of Distinct Entities Used   Diversity-0.211063078 %95 %
4Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
5Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
6Load Time Milliseconds   Performance-0.2132075147284 %91 %
7Number of Unique Variations Used   Diversity-0.2129778 %88 %
8Number of Top 50 Shared Factors Used   Diversity-0.21171298 %93 %
9Search Result Domain is .com, .net, or .org   Other-0.21115 %76 %
10Search Result Domain is .com   Other-0.2115 %75 %
11Entities in the HTML Tag   Relevancy-0.274615574 %95 %
12Entities in Sentences   Relevancy-0.266915271 %95 %
13Variations in H1-H6 Tags   Relevancy-0.224864 %87 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.221763 %87 %
15Variations in Div Tags   Relevancy-0.1962510972 %91 %
16Variations in H1 and H2 Tags   Relevancy-0.1911461 %86 %
17Entities in H1 Tags-0.196256 %91 %
18Variations in Body Tags   Relevancy-0.19179922277 %90 %
19Variations in P Tags   Relevancy-0.191313165 %89 %
20Variations in HTML Tags   Relevancy-0.19179921976 %91 %
21Number of Referring Domains   Authority-0.19170812551 %68 %
22Entities in H2 Tags-0.1931753 %92 %
23Number of Factors Used   Diversity-0.1933917898 %89 %
24Variations in Search Result Document File Name   Relevancy-0.183143 %80 %
25Variations in LI Tags   Relevancy-0.181722164 %88 %
26Number of Backlinks   Authority-0.18124727663252 %69 %
27Term Frequency   Relevancy-0.184376 %88 %
28Variations in Sentences   Relevancy-0.182153370 %88 %
29Variations in A Tags   Relevancy-0.181402264 %86 %
30Variation Count in Top 30KB   Relevancy-0.18771864 %85 %
31Variations in Search Result URL Path   Relevancy-0.183145 %81 %
32Variations in the Title Tag   Relevancy-0.183264 %86 %
33Number of Do Follow Backlinks   Authority-0.18122239593747 %68 %
34Clean Keyword Density in the HTML Tag   Relevancy-0.1816368 %80 %
35Number of Images   Size-0.183063476 %88 %
36Clean Text Kilobytes   Size-0.18321376 %88 %
37Word Count   Size-0.183797147283 %88 %
38Unabridged Word Count   Size-0.185159186083 %89 %
39Leading Variations in H1-H6 Tags   Relevancy-0.1814244 %87 %
40Number of HTML Tags   Size-0.173693110984 %88 %
41Number of Includes   Technology-0.17552780 %80 %
42LSI Words in Sentences   Relevancy-0.17370377364 %95 %
43Variations in First 100 Words   Relevancy-0.1717562 %85 %
44Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %87 %
45Variations in Search Result Link Text   Relevancy-0.173280 %82 %
46Variations in Search Result Display URL   Relevancy-0.173280 %82 %
47Entities in H3 Tags-0.1743845 %93 %
48Number of Images with ALT Text   Size-0.172792472 %87 %
49Variations in H1 Tags   Relevancy-0.173153 %86 %
50Variations in the Canonical URL   Relevancy-0.177247 %83 %
51Variations in H2 Tags   Relevancy-0.1711346 %84 %
52Number of Heading Tags   Size-0.17672375 %86 %
53Has Entities in H1 Tags   Relevancy-0.171156 %87 %
54Variations in A Tag HREF Attributes   Relevancy-0.173233858 %90 %
55Entities in Meta Description Tag   Relevancy-0.178358 %90 %
56Search Result Number of Dirs in Path   Other-0.174272 %77 %
57Variations in Distinct A Tag HREF Attributes   Relevancy-0.172442358 %90 %
58Number of P Tags   Size-0.171354075 %88 %
59Variation Density in Top 30KB   Relevancy-0.177258 %81 %
60Variations in Meta Description   Relevancy-0.174254 %84 %
61TF/IDF   Relevancy-0.171156 %85 %
62Title Tag Has Entities   Relevancy-0.161168 %87 %
63Number of No Follow Backlinks   Authority-0.161967373440 %67 %
64Variations in ALT Attributes   Relevancy-0.1655744 %84 %
65Variations in Span Tags   Relevancy-0.1641950 %89 %
66Number of HTTPS Links   Authority-0.1641915080 %87 %
67Number of DoFollow Links   Authority-0.1640914780 %86 %
68Number of Links   Authority-0.1642215280 %86 %
69Variations in Absolute URLs   Relevancy-0.163105059 %88 %
70Number of Forms   Technology-0.1619354 %83 %
71Number of Internal Links   Authority-0.1638913779 %87 %
72Variations in Main Tags   Relevancy-0.164846036 %86 %
73Percentage of DoFollow Links   Authority-0.16988280 %87 %
74Leading Variations in Title Tag   Relevancy-0.161130 %80 %
75Number of CSS Includes   Technology-0.16261073 %78 %
76Variations in OpenGraph Description   Relevancy-0.164249 %80 %
77Number of H1 Tags   Size-0.1611270 %88 %
78Variations in Search Result URL   Relevancy-0.164254 %77 %
79Variations in OpenGraph Title   Relevancy-0.163153 %79 %
80Number of External Links   Authority-0.16671576 %86 %
81Number of Facebook Pages   Authority-0.1616258 %81 %
82Percentage of DoFollow Internal Links   Authority-0.16907279 %85 %
83Number of DoFollow External Links   Authority-0.16641375 %85 %
84LSI Words in Title Tag   Relevancy-0.1616665 %94 %
85Has Form   Technology-0.161153 %78 %
86Number of Images without ALT Text   Size-0.16601158 %86 %
87Has Entities in H2 Tags   Relevancy-0.161153 %85 %
88Exact Matches in the HTML Tag   Relevancy-0.168261227 %83 %
89Number of HTML Comments   Size-0.167075872 %84 %
90LSI Words in H1 Tags   Relevancy-0.1517456 %93 %
91Variations in Script Tags   Relevancy-0.158537061 %83 %
92Average Words Per Sentence   Size-0.152293277 %82 %
93Number of H2 Tags   Size-0.1521768 %86 %
94Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
95Number of JavaScript Includes   Technology-0.15441880 %81 %
96Has Meta Charset   Technology-0.151174 %83 %
97Number of Sentences   Size-0.1569713182 %83 %
98Has JSON-LD Schema Markup   Relevancy-0.151154 %78 %
99Flesch Kincaid Reading Grade Level   Other-0.156195 %86 %
100Variations in Nav Tags   Relevancy-0.152372346 %84 %
101Number of H3 Tags   Size-0.1533961 %84 %
102Search Result Domain Length   Size-0.15251683 %80 %
103Variations in H3 Tags   Relevancy-0.1516335 %84 %
104Search Result Host Length   Size-0.15251683 %79 %
105LSI Words in Meta Description Tag   Relevancy-0.14361054 %91 %
106LSI Words in H2 Tags   Relevancy-0.14862054 %92 %
107Inline CSS Kilobytes   Size-0.141916164 %82 %
108Variations in Footer Tags   Relevancy-0.1463635 %82 %
109Entities in H4 Tags-0.1419222 %88 %
110Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %78 %
111Variations in Section Tags   Relevancy-0.14911736 %84 %
112Exact Matches in H1-H6 Tags   Relevancy-0.1411117 %82 %
113Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
114Has Meta Viewport   Technology-0.141181 %82 %
115Has Canonical URL   Authority-0.141171 %79 %
116Number of Absolute URLs   Authority-0.1499029282 %80 %
117Search Result Uses HTTPS   Other-0.141183 %84 %
118Page Size Kilobytes   Size-0.14110532282 %77 %
119Number of Questions In Headings   Size-0.148236 %82 %
120Has Entities in H3 Tags   Relevancy-0.141146 %84 %
121Number of Questions   Size-0.14811167 %77 %
122Number Of JSON-LD Types   Relevancy-0.141181456 %82 %
123Percentage of DoFollow External Links   Authority-0.14301074 %80 %
124Leading Variations in H2 Tags   Relevancy-0.146121 %81 %
125Number of Prices   Size-0.1429627470 %81 %
126Number of Email Addresses   Trust-0.14280543 %80 %
127Number of Social Pages   Authority-0.1430464 %81 %
128Has Email   Trust-0.141143 %71 %
129Has FavIcon   Technology-0.141174 %77 %
130Word Count in Meta Description   Size-0.14381967 %77 %
131Number of Instagram Pages   Authority-0.1412245 %78 %
132Meta Description Length   Size-0.1421711867 %78 %
133LSI Words in H3 Tags   Relevancy-0.131272347 %90 %
134Has Privacy Policy   Trust-0.131159 %74 %
135Number of Nofollow Links   Authority-0.1344525 %76 %
136Is Store Page   Other-0.131146 %68 %
137Variations in the last 100 words   Relevancy-0.1313344 %80 %
138Search Result URL Length   Size-0.13936298 %62 %
139Uses JSON-LD name   Other-0.131153 %77 %
140Has OpenGraph Type   Relevancy-0.131161 %71 %
141Variations Making Whole LI Tags   Relevancy-0.135124 %78 %
142Meta Description Tag Has Entities   Relevancy-0.131158 %82 %
143Is Home Page   Other-0.131121 %45 %
144Has Meta Description   Relevancy-0.131166 %73 %
145Variations in Meta Twitter Description   Relevancy-0.134124 %73 %
146Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
147Number of LinkedIn Pages   Authority-0.137133 %77 %
148Headings Has Question   Other-0.131136 %76 %
149Variations making whole A Tags   Relevancy-0.136129 %77 %
150Number of Facebook Accounts   Authority-0.133128 %79 %
151Title Length   Size-0.131225081 %78 %
152Has Meta Twitter Card   Authority-0.131152 %65 %
153Variations in I Tags   Relevancy-0.1317322 %80 %
154Is Purchase Page   Other-0.131147 %67 %
155Variations in Strong Tags   Relevancy-0.1315325 %79 %
156Inline JavaScript Kilobytes   Size-0.1358711879 %72 %
157Has OpenGraph Image   Relevancy-0.131155 %69 %
158Number of H4 Tags   Size-0.1320437 %81 %
159Title Word Count   Size-0.1318881 %76 %
160Has Schema Markup   Relevancy-0.131164 %74 %
161Has Terms of Service   Trust-0.131141 %67 %
162Uses JSON-LD CollectionPage   Other-0.13115 %33 %
163Number of US Phone Numbers   Trust-0.136011142 %80 %
164Number of Questions In H3 Tags   Size-0.135117 %76 %
165Number of Social Accounts   Authority-0.1310243 %79 %
166Has Contact Page   Trust-0.131163 %70 %
167Uses Schema collectionpage   Other-0.13115 %33 %
168Uses Schema name   Other-0.131160 %71 %
169Variations Making Whole Span Tags   Relevancy-0.127119 %81 %
170Exact Matches in Top 30KB   Relevancy-0.1224216 %78 %
171Has US Phone Number   Trust-0.121141 %71 %
172Uses JSON-LD url   Other-0.121147 %76 %
173Variations making whole H1 Tags   Relevancy-0.12119 %78 %
174Variations in TITLE Attributes   Relevancy-0.1287535 %79 %
175Variations in H4-H6 Tags   Relevancy-0.1216118 %80 %
176Is Pagination Page   Other-0.121120 %65 %
177Has Meta Twitter Description   Authority-0.121130 %58 %
178Exact Matches in Sentences   Relevancy-0.1242218 %83 %
179Variations in Button Tags   Relevancy-0.12125210 %81 %
180Variations in ID Attributes   Relevancy-0.1210213 %82 %
181Has Google Verify   Technology-0.121123 %66 %
182Uses Schema url   Other-0.121155 %68 %
183Uses JSON-LD ItemList-0.12114 %45 %
184Leading Variations in H3 Tags   Relevancy-0.125116 %77 %
185Uses Schema itemlist   Other-0.12114 %47 %
186Percentage of NoFollow Links   Authority-0.1215323 %74 %
187Number of NoFollow External Links   Authority-0.1221317 %75 %
188Has Meta Twitter Title   Authority-0.121132 %59 %
189Has Entities in H4 Tags   Relevancy-0.121123 %78 %
190Uses Schema organization   Other-0.121135 %67 %
191Uses JSON-LD ListItem   Other-0.121134 %71 %
192Is Category Page   Other-0.121115 %66 %
193Is Article Page   Other-0.121141 %66 %
194Number of Questions In H2 Tags   Size-0.124123 %74 %
195Exact Matches in Title Tag   Relevancy-0.122115 %79 %
196Variations in H4 Tags   Relevancy-0.125113 %78 %
197Number of Twitter Accounts   Authority-0.122125 %70 %
198Uses Schema image   Other-0.121122 %70 %
199Has Apple Touch Icon   Technology-0.121151 %73 %
200Uses JSON-LD description   Other-0.121140 %70 %