Measures 150094 SEO Factors

148372 Built-In SEO Factors

139174 On-page SEO Factors

9198 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 2026-03     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Load Time Milliseconds   Performance-0.2323402148181 %91 %
2Number of Unique LSI Words Used   Diversity-0.22121729280 %80 %
3Number of Unique Variations Used   Diversity-0.2223677 %90 %
4Search Result Domain is .com, .net, or .org   Other-0.22116 %70 %
5Number of Top 200 Shared Factors Used   Diversity-0.22523896 %93 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392996 %93 %
7Number of Top 50 Shared Factors Used   Diversity-0.21171295 %92 %
8Search Result Domain is .com   Other-0.2116 %69 %
9Entities in Title Tag   Relevancy-0.28362 %89 %
10Variations in Search Result Document File Name   Relevancy-0.27140 %86 %
11Variations in H1-H6 Tags   Relevancy-0.2309760 %91 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2299659 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.2168457 %90 %
14Number of Factors Used   Diversity-0.1939517396 %90 %
15Number of Distinct Entities Used   Diversity-0.19632672 %89 %
16Variations in P Tags   Relevancy-0.1994073463 %92 %
17Variations in Body Tags   Relevancy-0.1917421240275 %90 %
18Variations in HTML Tags   Relevancy-0.1917421240275 %90 %
19Variations in Search Result URL Path   Relevancy-0.1912142 %87 %
20Variations in Div Tags   Relevancy-0.194812016571 %91 %
21Entities in H1 Tags-0.1810250 %88 %
22Variations in Sentences   Relevancy-0.1845773769 %90 %
23Variations in H1 Tags   Relevancy-0.1841150 %87 %
24Entities in H2 Tags-0.1844648 %90 %
25Term Frequency   Relevancy-0.186375 %90 %
26Variations in Search Result URL   Relevancy-0.1824251 %84 %
27Variations in LI Tags   Relevancy-0.1844662261 %90 %
28Word Count   Size-0.1813622137881 %89 %
29Unabridged Word Count   Size-0.1832037181281 %90 %
30Variations in A Tags   Relevancy-0.1855072960 %88 %
31Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1816240 %88 %
32Variations in Search Result Link Text   Relevancy-0.1720278 %83 %
33Variations in Search Result Display URL   Relevancy-0.1720278 %83 %
34Leading Variations in H1-H6 Tags   Relevancy-0.1722242 %88 %
35Variations in the Title Tag   Relevancy-0.1719263 %85 %
36Clean Text Kilobytes   Size-0.171571270 %89 %
37Variation Count in Top 30KB   Relevancy-0.1751472963 %89 %
38Variations in H2 Tags   Relevancy-0.17127343 %88 %
39LSI Words in Sentences   Relevancy-0.17540668562 %96 %
40Entities in the HTML Tag   Relevancy-0.1760912364 %96 %
41Entities in Sentences   Relevancy-0.1760612060 %96 %
42Number of P Tags   Size-0.176343570 %89 %
43Number of Referring Domains   Authority-0.175102416342 %72 %
44Number of HTML Tags   Size-0.176162100181 %89 %
45Variations in First 100 Words   Relevancy-0.17176664 %88 %
46Number of H1 Tags   Size-0.174166 %89 %
47Variations in the Canonical URL   Relevancy-0.1735245 %86 %
48Number of Images   Size-0.174423471 %89 %
49Number of Heading Tags   Size-0.171922071 %89 %
50Number of Backlinks   Authority-0.16780137898542 %72 %
51Number of Images with ALT Text   Size-0.164362565 %89 %
52TF/IDF   Relevancy-0.161155 %87 %
53Leading Variations in Title Tag   Relevancy-0.161130 %85 %
54Variations in Absolute URLs   Relevancy-0.16148616357 %90 %
55Number of H2 Tags   Size-0.1626764 %89 %
56LSI Words in Title Tag   Relevancy-0.1617665 %91 %
57Number of DoFollow Links   Authority-0.16191813876 %88 %
58Variations in Distinct A Tag HREF Attributes   Relevancy-0.1622042555 %89 %
59Number of HTTPS Links   Authority-0.16191914076 %88 %
60Variations in A Tag HREF Attributes   Relevancy-0.1632073855 %90 %
61Number of Links   Authority-0.16192014176 %88 %
62Number of Do Follow Backlinks   Authority-0.16653204728438 %71 %
63Leading Variations in H1 Tags   Relevancy-0.162126 %86 %
64Variations in Span Tags   Relevancy-0.16582946 %89 %
65Flesch Kincaid Reading Grade Level   Other-0.167192 %87 %
66LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
67Variations in Meta Description   Relevancy-0.1645253 %85 %
68Number of Includes   Technology-0.16762578 %82 %
69Clean Keyword Density in the HTML Tag   Relevancy-0.16179467 %82 %
70Number of Internal Links   Authority-0.1674312675 %88 %
71Variations in Script Tags   Relevancy-0.164888111361 %85 %
72Variations in ALT Attributes   Relevancy-0.163481842 %87 %
73Exact Matches in the HTML Tag   Relevancy-0.16271925 %87 %
74Percentage of DoFollow Links   Authority-0.16988076 %88 %
75Number of Facebook Pages   Authority-0.1610253 %84 %
76Variation Density in Top 30KB   Relevancy-0.16390358 %83 %
77Entities in H3 Tags-0.1635639 %89 %
78LSI Words in H2 Tags   Relevancy-0.161172053 %94 %
79Has JSON-LD Schema Markup   Relevancy-0.151150 %82 %
80Has Entities in H1 Tags   Relevancy-0.151151 %85 %
81Search Result Number of Dirs in Path   Other-0.155269 %79 %
82Number of Sentences   Size-0.1554012579 %86 %
83Variations in OpenGraph Title   Relevancy-0.1516152 %82 %
84Variations in Main Tags   Relevancy-0.15296988136 %87 %
85Has Meta Charset   Technology-0.151169 %83 %
86Number of No Follow Backlinks   Authority-0.15299474142732 %66 %
87Number Of JSON-LD Types   Relevancy-0.151331453 %86 %
88Entities in Meta Description Tag   Relevancy-0.159353 %85 %
89Percentage of DoFollow Internal Links   Authority-0.15907075 %85 %
90Number of DoFollow External Links   Authority-0.1516031470 %86 %
91Variations in Nav Tags   Relevancy-0.1575262743 %88 %
92Average Words Per Sentence   Size-0.151943073 %83 %
93Number of HTML Comments   Size-0.1510574866 %86 %
94Number of H3 Tags   Size-0.1540856 %88 %
95Variations in H3 Tags   Relevancy-0.15131332 %88 %
96Number of External Links   Authority-0.1516041572 %86 %
97Has Entities in H2 Tags   Relevancy-0.151149 %85 %
98Variations in OpenGraph Description   Relevancy-0.1547247 %83 %
99Inline CSS Kilobytes   Size-0.151996163 %83 %
100Number of JavaScript Includes   Technology-0.15451778 %81 %
101Number of Images without ALT Text   Size-0.1569953 %87 %
102Has Meta Viewport   Technology-0.151178 %83 %
103Search Result Uses HTTPS   Other-0.141181 %83 %
104Number of Forms   Technology-0.1414248 %83 %
105Variations in Section Tags   Relevancy-0.148111735 %86 %
106Search Result Domain Length   Size-0.14251681 %81 %
107Search Result Host Length   Size-0.14251681 %81 %
108Number of US Phone Numbers   Trust-0.147021542 %81 %
109Number of Absolute URLs   Authority-0.14209728280 %80 %
110Number of LinkedIn Pages   Authority-0.146129 %85 %
111Uses JSON-LD name   Other-0.141150 %81 %
112Variations making whole H1-H6 Tags   Relevancy-0.142114 %84 %
113LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
114Leading Variations in H2 Tags   Relevancy-0.147120 %83 %
115Number of Social Pages   Authority-0.1424459 %83 %
116Title Tag Has Entities   Relevancy-0.141162 %82 %
117Number of CSS Includes   Technology-0.1431970 %80 %
118Number of Questions In Headings   Size-0.148235 %85 %
119Percentage of DoFollow External Links   Authority-0.14351269 %81 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.142113 %84 %
121Number of Email Addresses   Trust-0.14128440 %82 %
122Has Canonical URL   Authority-0.141167 %79 %
123Page Size Kilobytes   Size-0.1490831480 %74 %
124Has US Phone Number   Trust-0.141142 %75 %
125LSI Words in H3 Tags   Relevancy-0.132052045 %93 %
126Variations in Strong Tags   Relevancy-0.1371225 %85 %
127Has Form   Technology-0.131147 %79 %
128Variations in Footer Tags   Relevancy-0.1332251434 %85 %
129Number of Questions   Size-0.132371265 %78 %
130Number of Instagram Pages   Authority-0.1320240 %80 %
131Number of Social Accounts   Authority-0.1314239 %82 %
132Variations making whole A Tags   Relevancy-0.1318125 %82 %
133Variations Making Whole Span Tags   Relevancy-0.1311117 %83 %
134Title Word Count   Size-0.1330880 %73 %
135Uses JSON-LD url   Other-0.131144 %80 %
136Uses Schema name   Other-0.131158 %74 %
137Number of H4 Tags   Size-0.1341333 %82 %
138Title Length   Size-0.131865080 %75 %
139Uses JSON-LD BreadcrumbList   Other-0.131132 %76 %
140Has FavIcon   Technology-0.131172 %77 %
141Exact Matches in H1-H6 Tags   Relevancy-0.1311115 %87 %
142Uses JSON-LD ListItem   Other-0.131132 %77 %
143Headings Has Question   Other-0.131135 %81 %
144Number of Prices   Size-0.1310318465 %78 %
145Variations Making Whole LI Tags   Relevancy-0.135121 %83 %
146Has Schema Markup   Relevancy-0.131161 %75 %
147Meta Description Length   Size-0.1330011664 %77 %
148Inline JavaScript Kilobytes   Size-0.1346312577 %71 %
149Number of Questions In H2 Tags   Size-0.134122 %83 %
150Has Email   Trust-0.131140 %74 %
151Exact Matches in Top 30KB   Relevancy-0.1326215 %84 %
152Number of Facebook Accounts   Authority-0.133126 %78 %
153Word Count in Meta Description   Size-0.13481964 %77 %
154Uses Schema url   Other-0.131154 %70 %
155Variations in TITLE Attributes   Relevancy-0.13260536 %81 %
156Uses JSON-LD description   Other-0.131139 %73 %
157Has Contact Page   Trust-0.121158 %76 %
158Variations in I Tags   Relevancy-0.12395422 %81 %
159Number Of Claimed Brands   Other-0.1243223 %82 %
160Variations in the last 100 words   Relevancy-0.12182447 %78 %
161Is Article Page   Other-0.121142 %74 %
162Has Entities in H3 Tags   Relevancy-0.121140 %83 %
163Is Store Page   Other-0.121143 %69 %
164Has Privacy Policy   Trust-0.121154 %77 %
165Has OpenGraph Type   Relevancy-0.121159 %73 %
166Has Meta Description   Relevancy-0.121163 %74 %
167Variations in Article Tags   Relevancy-0.122561123 %80 %
168Entities in H4 Tags-0.1225218 %84 %
169Uses Schema organization   Other-0.121133 %71 %
170Uses Microdata potentialAction   Other-0.12113 %16 %
171Exact Matches in Title Tag   Relevancy-0.122113 %84 %
172Exact Matches in Sentences   Relevancy-0.1247217 %89 %
173Variations making whole H1 Tags   Relevancy-0.12118 %83 %
174Uses Microdata target   Other-0.12113 %17 %
175Uses Schema postaladdress   Other-0.121120 %67 %
176Uses Microdata SearchAction   Other-0.12113 %17 %
177Is OpenGraph Type Article   Technology-0.121131 %68 %
178Number of Twitter Accounts   Authority-0.1213122 %79 %
179Uses Schema webpage   Other-0.121132 %71 %
180Number of Questions In H3 Tags   Size-0.125116 %79 %
181Uses JSON-LD PostalAddress   Other-0.121119 %68 %
182Uses Schema website   Other-0.121133 %70 %
183Search Result Summary Length   Size-0.1218815395 %77 %
184Uses Schema addresslocality   Other-0.121119 %67 %
185Leading Variations in H3 Tags   Relevancy-0.129114 %81 %
186Uses Schema image   Other-0.121120 %72 %
187Uses Schema breadcrumblist   Other-0.121139 %68 %
188Uses JSON-LD Organization   Other-0.121129 %74 %
189Uses JSON-LD ImageObject   Other-0.121129 %73 %
190Has Apple Touch Icon   Technology-0.121147 %73 %
191Variations in H4-H6 Tags   Relevancy-0.1247116 %80 %
192Uses JSON-LD item   Other-0.121121 %72 %
193Uses Schema streetaddress   Other-0.121118 %67 %
194Uses JSON-LD addressLocality   Other-0.121118 %68 %
195Uses Schema postalcode   Other-0.121118 %67 %
196Has OpenGraph Image   Relevancy-0.121151 %71 %
197Uses Schema potentialaction   Other-0.12113 %17 %
198Uses Schema listitem   Other-0.121140 %68 %
199Has Meta Twitter Card   Authority-0.121151 %67 %
200Uses JSON-LD streetAddress   Other-0.121117 %68 %