Measures 150464 SEO Factors

148742 Built-In SEO Factors

139540 On-page SEO Factors

9202 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 2026-04     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Load Time Milliseconds   Performance-0.2314022150981 %93 %
2Number of Unique LSI Words Used   Diversity-0.2289730279 %80 %
3Number of Unique Variations Used   Diversity-0.2232674 %90 %
4Number of Top 50 Shared Factors Used   Diversity-0.22161194 %94 %
5Search Result Domain is .com, .net, or .org   Other-0.22116 %79 %
6Number of Top 200 Shared Factors Used   Diversity-0.22503696 %94 %
7Number of Top 100 Shared Factors Used   Diversity-0.22382796 %95 %
8Search Result Domain is .com   Other-0.21116 %79 %
9Number of Distinct Entities Used   Diversity-0.2602672 %94 %
10Entities in Title Tag   Relevancy-0.27360 %92 %
11Variations in H1-H6 Tags   Relevancy-0.2212855 %90 %
12Variations in H1 and H2 Tags   Relevancy-0.2103452 %91 %
13Variations in Body Tags   Relevancy-0.2123426122371 %90 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.2192754 %91 %
15Variations in HTML Tags   Relevancy-0.2123426120570 %92 %
16Variations in Div Tags   Relevancy-0.25727442366 %92 %
17Number of Factors Used   Diversity-0.1927116696 %92 %
18Variations in P Tags   Relevancy-0.1926374357 %93 %
19Entities in Sentences   Relevancy-0.1981813461 %96 %
20Entities in the HTML Tag   Relevancy-0.19198514066 %96 %
21Entities in H2 Tags-0.1927746 %93 %
22Term Frequency   Relevancy-0.196370 %90 %
23Entities in H1 Tags-0.197248 %91 %
24Variations in Search Result Display URL   Relevancy-0.1816275 %83 %
25Variations in Search Result Link Text   Relevancy-0.1816275 %83 %
26Leading Variations in H1-H6 Tags   Relevancy-0.1820237 %88 %
27Variations in H1 Tags   Relevancy-0.1813146 %86 %
28Variations in Sentences   Relevancy-0.1852137363 %92 %
29Variations in LI Tags   Relevancy-0.1831943655 %90 %
30Variations in Search Result Document File Name   Relevancy-0.189138 %86 %
31Word Count   Size-0.184223138481 %91 %
32Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817235 %89 %
33Number of HTML Tags   Size-0.187638100281 %87 %
34Unabridged Word Count   Size-0.188545190781 %91 %
35Variations in the Title Tag   Relevancy-0.1814258 %88 %
36Variations in A Tags   Relevancy-0.1859705555 %89 %
37Variation Count in Top 30KB   Relevancy-0.1844125757 %88 %
38LSI Words in Sentences   Relevancy-0.18332873860 %95 %
39Clean Text Kilobytes   Size-0.18491366 %89 %
40Number of Images with ALT Text   Size-0.171202063 %87 %
41Variations in Meta Description   Relevancy-0.1734248 %84 %
42LSI Words in Title Tag   Relevancy-0.1727665 %92 %
43Variations in Search Result URL Path   Relevancy-0.1710140 %87 %
44Variations in H2 Tags   Relevancy-0.1799338 %90 %
45Number of P Tags   Size-0.17993666 %89 %
46Number of Heading Tags   Size-0.17531967 %89 %
47Number of Includes   Technology-0.17492576 %81 %
48Number of Images   Size-0.171252868 %88 %
49Variations in the Canonical URL   Relevancy-0.1759242 %87 %
50Entities in H3 Tags-0.1728738 %94 %
51TF/IDF   Relevancy-0.171149 %87 %
52Number of H2 Tags   Size-0.1716760 %91 %
53Clean Keyword Density in the HTML Tag   Relevancy-0.17177562 %84 %
54Number of HTTPS Links   Authority-0.1760013173 %88 %
55Variations in ALT Attributes   Relevancy-0.1712941440 %83 %
56Entities in Meta Description Tag   Relevancy-0.178352 %89 %
57Number of Links   Authority-0.1760113373 %88 %
58LSI Words in H1 Tags   Relevancy-0.1714451 %93 %
59Number of H1 Tags   Size-0.175162 %91 %
60Number of DoFollow Links   Authority-0.1759213073 %89 %
61Has Entities in H1 Tags   Relevancy-0.171148 %87 %
62Number of Facebook Pages   Authority-0.176250 %85 %
63Number of Internal Links   Authority-0.1759512072 %88 %
64Variations in Main Tags   Relevancy-0.162745823433 %88 %
65Leading Variations in Title Tag   Relevancy-0.161126 %82 %
66Variations in OpenGraph Title   Relevancy-0.1612149 %82 %
67Variations in Span Tags   Relevancy-0.1614821743 %90 %
68Variations in A Tag HREF Attributes   Relevancy-0.1634884849 %90 %
69Variations in OpenGraph Description   Relevancy-0.1632243 %82 %
70Variations in Search Result URL   Relevancy-0.1619248 %83 %
71Variation Density in Top 30KB   Relevancy-0.16279454 %84 %
72Variations in Absolute URLs   Relevancy-0.161033612951 %92 %
73Leading Variations in H1 Tags   Relevancy-0.162123 %84 %
74Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621333249 %91 %
75Variations in Script Tags   Relevancy-0.165826848857 %87 %
76Search Result Number of Dirs in Path   Other-0.163273 %77 %
77Number of CSS Includes   Technology-0.1622969 %82 %
78Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
79Variations in First 100 Words   Relevancy-0.16178657 %88 %
80Has Entities in H2 Tags   Relevancy-0.161146 %89 %
81Average Words Per Sentence   Size-0.161493171 %86 %
82Percentage of DoFollow Links   Authority-0.161007873 %90 %
83Number of Referring Domains   Authority-0.16701912244 %78 %
84Number of H3 Tags   Size-0.1628852 %85 %
85Exact Matches in the HTML Tag   Relevancy-0.164321126 %87 %
86Variations in Nav Tags   Relevancy-0.15107564639 %86 %
87Number of Backlinks   Authority-0.1519454221503644 %80 %
88Has JSON-LD Schema Markup   Relevancy-0.151148 %84 %
89Number of Forms   Technology-0.1510247 %80 %
90LSI Words in H2 Tags   Relevancy-0.15962150 %95 %
91Number of Sentences   Size-0.1566013577 %85 %
92Variations in Section Tags   Relevancy-0.1516112332 %88 %
93Number of HTML Comments   Size-0.154094863 %87 %
94Number Of JSON-LD Types   Relevancy-0.152291950 %87 %
95Flesch Kincaid Reading Grade Level   Other-0.156193 %89 %
96Number of Images without ALT Text   Size-0.1571952 %88 %
97Search Result Domain Length   Size-0.15251681 %83 %
98Search Result Host Length   Size-0.15251681 %83 %
99Number of Do Follow Backlinks   Authority-0.151945374998740 %78 %
100Search Result Uses HTTPS   Other-0.151180 %83 %
101Number of DoFollow External Links   Authority-0.15561268 %87 %
102Has Meta Charset   Technology-0.151168 %82 %
103Number of External Links   Authority-0.15591469 %88 %
104LSI Words in Meta Description Tag   Relevancy-0.15551053 %92 %
105Number of Questions In Headings   Size-0.1510232 %83 %
106Has Canonical URL   Authority-0.151166 %81 %
107Number of Absolute URLs   Authority-0.15106326279 %82 %
108Number of JavaScript Includes   Technology-0.15401776 %77 %
109Variations in H3 Tags   Relevancy-0.15119329 %85 %
110Has Form   Technology-0.141146 %77 %
111Title Tag Has Entities   Relevancy-0.141160 %88 %
112Title Word Count   Size-0.1440878 %78 %
113Meta Description Length   Size-0.1454611763 %80 %
114Inline CSS Kilobytes   Size-0.142075662 %83 %
115Word Count in Meta Description   Size-0.14821963 %80 %
116Leading Variations in H2 Tags   Relevancy-0.147117 %86 %
117Number of No Follow Backlinks   Authority-0.141851383576333 %72 %
118Number of Facebook Accounts   Authority-0.143124 %79 %
119Page Size Kilobytes   Size-0.14103733979 %72 %
120Number of US Phone Numbers   Trust-0.143451137 %84 %
121Uses JSON-LD name   Other-0.141148 %82 %
122Variations in Footer Tags   Relevancy-0.1438282530 %85 %
123Title Length   Size-0.142365179 %78 %
124Has Meta Description   Relevancy-0.141162 %80 %
125Has Meta Viewport   Technology-0.141177 %82 %
126Has Entities in H3 Tags   Relevancy-0.141138 %86 %
127Has Privacy Policy   Trust-0.141153 %80 %
128Has US Phone Number   Trust-0.141138 %76 %
129Variations making whole H1-H6 Tags   Relevancy-0.142112 %81 %
130Variations Making Whole LI Tags   Relevancy-0.144118 %81 %
131Has Schema Markup   Relevancy-0.141159 %78 %
132Exact Matches in H1-H6 Tags   Relevancy-0.1413117 %84 %
133Uses Schema name   Other-0.141157 %73 %
134Number of Social Accounts   Authority-0.137237 %84 %
135Headings Has Question   Other-0.131131 %80 %
136Number of Questions   Size-0.13651262 %79 %
137LSI Words in H3 Tags   Relevancy-0.131062243 %90 %
138Number of LinkedIn Pages   Authority-0.133125 %83 %
139Number of H4 Tags   Size-0.1327330 %81 %
140Meta Description Tag Has Entities   Relevancy-0.131152 %82 %
141Variations in Strong Tags   Relevancy-0.13110222 %82 %
142Number of Social Pages   Authority-0.1320457 %81 %
143Entities in H4 Tags-0.1314216 %89 %
144Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
145Percentage of DoFollow External Links   Authority-0.13241167 %84 %
146Uses JSON-LD url   Other-0.131141 %82 %
147Variations making whole A Tags   Relevancy-0.13101223 %82 %
148Has Meta Twitter Card   Authority-0.131149 %65 %
149Has Contact Page   Trust-0.131156 %75 %
150Uses JSON-LD ListItem   Other-0.131131 %75 %
151Number of Instagram Pages   Authority-0.1317240 %77 %
152Has OpenGraph Type   Relevancy-0.131157 %73 %
153Uses JSON-LD BreadcrumbList   Other-0.131130 %74 %
154Uses Schema url   Other-0.131152 %72 %
155Has OpenGraph Image   Relevancy-0.131152 %72 %
156Number of Prices   Size-0.133919765 %80 %
157Uses JSON-LD description   Other-0.131138 %75 %
158Number of Questions In H2 Tags   Size-0.136121 %79 %
159Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
160Has FavIcon   Technology-0.131170 %72 %
161Number of Email Addresses   Trust-0.1358438 %82 %
162Exact Matches in Sentences   Relevancy-0.1348319 %88 %
163Number of Nofollow Links   Authority-0.1322423 %81 %
164Is Article Page   Other-0.131139 %70 %
165Uses Schema product   Other-0.131111 %53 %
166Uses Schema listitem   Other-0.121139 %68 %
167Exact Matches in Top 30KB   Relevancy-0.1219115 %82 %
168Inline JavaScript Kilobytes   Size-0.1252415475 %70 %
169Exact Matches in Title Tag   Relevancy-0.122115 %85 %
170Variations in Meta Twitter Description   Relevancy-0.1220122 %72 %
171Has Terms of Service   Trust-0.121137 %72 %
172Number Of Claimed Brands   Other-0.1220221 %76 %
173Uses Schema description   Other-0.121145 %68 %
174Uses Schema breadcrumblist   Other-0.121138 %68 %
175Variations in I Tags   Relevancy-0.12394518 %82 %
176Variations in TITLE Attributes   Relevancy-0.12563933 %82 %
177Variations in the last 100 words   Relevancy-0.12175440 %80 %
178Uses JSON-LD Product   Other-0.121110 %54 %
179Is OpenGraph Type Article   Technology-0.121129 %65 %
180Is Pagination Page   Other-0.121117 %68 %
181Has Email   Trust-0.121138 %73 %
182Uses Schema organization   Other-0.121131 %73 %
183Uses Schema unitcode   Other-0.12114 %16 %
184Leading Variations in H3 Tags   Relevancy-0.1210112 %78 %
185Number of Twitter Accounts   Authority-0.122119 %78 %
186Uses JSON-LD Organization   Other-0.121128 %77 %
187Variations in Button Tags   Relevancy-0.123495359 %80 %
188Number of Questions In H3 Tags   Size-0.127115 %75 %
189Has Google Verify   Technology-0.121119 %73 %
190Uses JSON-LD unitCode   Other-0.12114 %16 %
191Has Meta Robots   Other-0.121123 %73 %
192Uses JSON-LD datePublished   Other-0.121129 %66 %
193Percentage of NoFollow Links   Authority-0.1215220 %77 %
194Variations in Article Tags   Relevancy-0.1213381420 %82 %
195Uses JSON-LD ImageObject   Other-0.121128 %68 %
196Is Store Page   Other-0.121143 %66 %
197Search Result Summary Length   Size-0.1216315296 %70 %
198Variations in Meta Twitter Content   Relevancy-0.125124 %70 %
199Number of HREF Lang Tags   Size-0.1257311 %76 %
200Uses Schema datemodified   Other-0.121127 %63 %