Measures 150076 SEO Factors

148354 Built-In SEO Factors

139156 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-0.2323402149281 %92 %
2Number of Unique LSI Words Used   Diversity-0.22121728679 %80 %
3Number of Unique Variations Used   Diversity-0.2223677 %90 %
4Number of Top 200 Shared Factors Used   Diversity-0.22513896 %93 %
5Search Result Domain is .com, .net, or .org   Other-0.22116 %70 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392996 %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 %88 %
10Variations in Search Result Document File Name   Relevancy-0.25140 %86 %
11Variations in H1-H6 Tags   Relevancy-0.2185760 %91 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2139659 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.260457 %90 %
14Number of Factors Used   Diversity-0.228717396 %90 %
15Variations in P Tags   Relevancy-0.1944162963 %91 %
16Number of Distinct Entities Used   Diversity-0.19632672 %89 %
17Variations in Body Tags   Relevancy-0.1912616030575 %90 %
18Variations in HTML Tags   Relevancy-0.1912616030575 %90 %
19Variations in Search Result URL Path   Relevancy-0.195142 %87 %
20Variations in Div Tags   Relevancy-0.194812012770 %91 %
21Entities in H1 Tags-0.1810250 %88 %
22Variations in H1 Tags   Relevancy-0.188150 %87 %
23Variations in Sentences   Relevancy-0.1843403369 %91 %
24Term Frequency   Relevancy-0.185375 %90 %
25Entities in H2 Tags-0.1844648 %89 %
26Variations in Search Result URL   Relevancy-0.1817251 %84 %
27Variations in LI Tags   Relevancy-0.1844662161 %90 %
28Word Count   Size-0.188898136881 %90 %
29Variations in A Tags   Relevancy-0.1855072461 %88 %
30Unabridged Word Count   Size-0.1814365177481 %90 %
31Variations in the Title Tag   Relevancy-0.1812263 %85 %
32Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1816240 %87 %
33Variations in Search Result Link Text   Relevancy-0.1710278 %84 %
34Variations in Search Result Display URL   Relevancy-0.1710278 %84 %
35Leading Variations in H1-H6 Tags   Relevancy-0.1721242 %88 %
36Variations in H2 Tags   Relevancy-0.1754343 %87 %
37LSI Words in Sentences   Relevancy-0.17540267262 %96 %
38Variation Count in Top 30KB   Relevancy-0.1751472663 %89 %
39Clean Text Kilobytes   Size-0.17761270 %90 %
40Number of P Tags   Size-0.171463570 %89 %
41Number of HTML Tags   Size-0.174502100381 %89 %
42Variations in First 100 Words   Relevancy-0.17151664 %88 %
43Number of Referring Domains   Authority-0.172360113142 %70 %
44Variations in the Canonical URL   Relevancy-0.1735245 %86 %
45Entities in the HTML Tag   Relevancy-0.1760912064 %96 %
46Entities in Sentences   Relevancy-0.1760611760 %96 %
47Number of Images   Size-0.174423471 %89 %
48Number of H1 Tags   Size-0.174166 %89 %
49Number of Heading Tags   Size-0.17762071 %90 %
50LSI Words in Title Tag   Relevancy-0.1717564 %92 %
51TF/IDF   Relevancy-0.171156 %87 %
52Number of Backlinks   Authority-0.17653492824142 %71 %
53Number of Images with ALT Text   Size-0.174362665 %88 %
54Variations in Absolute URLs   Relevancy-0.16148615857 %89 %
55Leading Variations in Title Tag   Relevancy-0.161130 %86 %
56Number of HTTPS Links   Authority-0.16191914276 %87 %
57Variations in Distinct A Tag HREF Attributes   Relevancy-0.1622042356 %88 %
58Number of DoFollow Links   Authority-0.16191814076 %87 %
59Number of H2 Tags   Size-0.1624764 %90 %
60Number of Links   Authority-0.16192014376 %87 %
61Variations in A Tag HREF Attributes   Relevancy-0.1632073656 %90 %
62Flesch Kincaid Reading Grade Level   Other-0.167192 %87 %
63Leading Variations in H1 Tags   Relevancy-0.162125 %86 %
64LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
65Variations in Meta Description   Relevancy-0.1632252 %86 %
66Number of Do Follow Backlinks   Authority-0.16653204704438 %70 %
67Number of Internal Links   Authority-0.1674312775 %88 %
68Variations in Script Tags   Relevancy-0.164888110460 %86 %
69Number of Includes   Technology-0.16762578 %83 %
70Clean Keyword Density in the HTML Tag   Relevancy-0.16173467 %83 %
71Variations in Span Tags   Relevancy-0.16582846 %89 %
72Number of Facebook Pages   Authority-0.1610253 %84 %
73Percentage of DoFollow Links   Authority-0.16988076 %89 %
74Variations in ALT Attributes   Relevancy-0.16861742 %87 %
75Exact Matches in the HTML Tag   Relevancy-0.16271924 %87 %
76Number of Sentences   Size-0.1654012479 %86 %
77Variation Density in Top 30KB   Relevancy-0.16237258 %84 %
78Variations in OpenGraph Title   Relevancy-0.169151 %83 %
79Search Result Number of Dirs in Path   Other-0.165269 %79 %
80LSI Words in H2 Tags   Relevancy-0.161171953 %94 %
81Has JSON-LD Schema Markup   Relevancy-0.161150 %82 %
82Entities in H3 Tags-0.1535639 %88 %
83Has Entities in H1 Tags   Relevancy-0.151150 %85 %
84Has Meta Charset   Technology-0.151169 %84 %
85Number Of JSON-LD Types   Relevancy-0.151331452 %86 %
86Number of No Follow Backlinks   Authority-0.15299474125631 %64 %
87Percentage of DoFollow Internal Links   Authority-0.15907075 %86 %
88Variations in Main Tags   Relevancy-0.15179926335 %86 %
89Entities in Meta Description Tag   Relevancy-0.159352 %85 %
90Average Words Per Sentence   Size-0.151943073 %83 %
91Variations in Nav Tags   Relevancy-0.1575262443 %88 %
92Number of HTML Comments   Size-0.1510574966 %85 %
93Number of DoFollow External Links   Authority-0.1516031470 %86 %
94Number of H3 Tags   Size-0.1540856 %88 %
95Variations in OpenGraph Description   Relevancy-0.1539247 %84 %
96Number of External Links   Authority-0.1516041572 %86 %
97Has Meta Viewport   Technology-0.151178 %84 %
98Inline CSS Kilobytes   Size-0.151996162 %83 %
99Variations in H3 Tags   Relevancy-0.1580332 %88 %
100Number of JavaScript Includes   Technology-0.15451778 %81 %
101Search Result Uses HTTPS   Other-0.151181 %83 %
102Number of Images without ALT Text   Size-0.1569953 %86 %
103Has Entities in H2 Tags   Relevancy-0.151149 %85 %
104Number of Absolute URLs   Authority-0.15209728380 %80 %
105Search Result Domain Length   Size-0.14251681 %82 %
106Search Result Host Length   Size-0.14251681 %82 %
107Number of US Phone Numbers   Trust-0.147021542 %81 %
108Variations in Section Tags   Relevancy-0.145611736 %86 %
109LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
110Number of Forms   Technology-0.1414248 %82 %
111Number of Social Pages   Authority-0.1424459 %83 %
112Number of LinkedIn Pages   Authority-0.146129 %85 %
113Uses JSON-LD name   Other-0.141149 %81 %
114Title Tag Has Entities   Relevancy-0.141161 %82 %
115Leading Variations in H2 Tags   Relevancy-0.147120 %82 %
116Variations making whole H1-H6 Tags   Relevancy-0.142115 %84 %
117Number of CSS Includes   Technology-0.1431970 %80 %
118Has Canonical URL   Authority-0.141167 %79 %
119Number of Questions In Headings   Size-0.148234 %86 %
120Number of Email Addresses   Trust-0.14128440 %82 %
121Page Size Kilobytes   Size-0.1490831180 %75 %
122Percentage of DoFollow External Links   Authority-0.14351269 %81 %
123Variations making whole H1, H2, and H3 Tags   Relevancy-0.142113 %85 %
124Has US Phone Number   Trust-0.141142 %75 %
125LSI Words in H3 Tags   Relevancy-0.142052045 %92 %
126Number of Instagram Pages   Authority-0.1320239 %80 %
127Variations in Strong Tags   Relevancy-0.1371224 %84 %
128Number of Questions   Size-0.132371264 %79 %
129Has Form   Technology-0.131148 %79 %
130Variations in Footer Tags   Relevancy-0.1332251134 %85 %
131Uses Schema name   Other-0.131157 %75 %
132Title Word Count   Size-0.1330880 %74 %
133Number of Social Accounts   Authority-0.1314239 %82 %
134Has FavIcon   Technology-0.131172 %77 %
135Title Length   Size-0.131865080 %75 %
136Has Schema Markup   Relevancy-0.131160 %75 %
137Number of H4 Tags   Size-0.1323333 %82 %
138Uses JSON-LD url   Other-0.131144 %81 %
139Variations making whole A Tags   Relevancy-0.1313125 %83 %
140Number of Prices   Size-0.1310318365 %78 %
141Variations Making Whole Span Tags   Relevancy-0.1311117 %83 %
142Inline JavaScript Kilobytes   Size-0.1346312376 %71 %
143Uses JSON-LD BreadcrumbList   Other-0.131132 %77 %
144Meta Description Length   Size-0.1330011664 %77 %
145Uses JSON-LD ListItem   Other-0.131132 %77 %
146Variations Making Whole LI Tags   Relevancy-0.135121 %82 %
147Headings Has Question   Other-0.131134 %81 %
148Has Email   Trust-0.131140 %74 %
149Word Count in Meta Description   Size-0.13481964 %77 %
150Number of Questions In H2 Tags   Size-0.134122 %83 %
151Uses Schema url   Other-0.131153 %71 %
152Number of Facebook Accounts   Authority-0.133126 %79 %
153Exact Matches in H1-H6 Tags   Relevancy-0.1311115 %88 %
154Variations in the last 100 words   Relevancy-0.13147348 %77 %
155Has OpenGraph Type   Relevancy-0.131158 %73 %
156Is Store Page   Other-0.131143 %70 %
157Exact Matches in Top 30KB   Relevancy-0.1326214 %85 %
158Has Contact Page   Trust-0.131157 %77 %
159Has Privacy Policy   Trust-0.131153 %77 %
160Number Of Claimed Brands   Other-0.1343222 %83 %
161Variations in TITLE Attributes   Relevancy-0.13260535 %81 %
162Has Meta Description   Relevancy-0.131163 %75 %
163Uses JSON-LD description   Other-0.121139 %74 %
164Variations in I Tags   Relevancy-0.12293422 %81 %
165Has Entities in H3 Tags   Relevancy-0.121140 %82 %
166Is Article Page   Other-0.121141 %74 %
167Variations in Article Tags   Relevancy-0.122561122 %80 %
168Entities in H4 Tags-0.1225218 %84 %
169Uses Schema organization   Other-0.121132 %71 %
170Uses Schema postaladdress   Other-0.121120 %68 %
171Uses Schema breadcrumblist   Other-0.121139 %69 %
172Uses Schema webpage   Other-0.121132 %72 %
173Uses Schema addresslocality   Other-0.121119 %68 %
174Uses JSON-LD PostalAddress   Other-0.121118 %69 %
175Uses Microdata potentialAction   Other-0.12113 %17 %
176Number of Questions In H3 Tags   Size-0.125116 %80 %
177Number of Twitter Accounts   Authority-0.1213122 %79 %
178Variations making whole H1 Tags   Relevancy-0.12118 %83 %
179Exact Matches in Title Tag   Relevancy-0.122113 %85 %
180Is OpenGraph Type Article   Technology-0.121130 %68 %
181Uses Schema listitem   Other-0.121139 %69 %
182Uses Microdata target   Other-0.12113 %18 %
183Has OpenGraph Image   Relevancy-0.121151 %71 %
184Has Apple Touch Icon   Technology-0.121147 %74 %
185Uses Schema postalcode   Other-0.121118 %68 %
186Variations in H4-H6 Tags   Relevancy-0.1247116 %80 %
187Uses Schema streetaddress   Other-0.121118 %68 %
188Has Meta Twitter Card   Authority-0.121151 %67 %
189Uses Microdata SearchAction   Other-0.12113 %17 %
190Uses Schema website   Other-0.121133 %71 %
191Uses JSON-LD ImageObject   Other-0.121129 %73 %
192Uses JSON-LD addressLocality   Other-0.121118 %69 %
193Uses JSON-LD item   Other-0.121120 %73 %
194Uses Schema image   Other-0.121120 %72 %
195Leading Variations in H3 Tags   Relevancy-0.129114 %80 %
196Uses JSON-LD postalCode   Other-0.121117 %69 %
197Exact Matches in Sentences   Relevancy-0.1246216 %90 %
198Uses JSON-LD streetAddress   Other-0.121117 %69 %
199Uses JSON-LD Organization   Other-0.121129 %74 %
200Search Result Summary Length   Size-0.1218815395 %78 %