Measures 150048 SEO Factors

148326 Built-In SEO Factors

139129 On-page SEO Factors

9197 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-0.2320717146181 %92 %
2Number of Unique LSI Words Used   Diversity-0.22121728279 %79 %
3Number of Unique Variations Used   Diversity-0.2219677 %91 %
4Number of Top 200 Shared Factors Used   Diversity-0.22513896 %93 %
5Number of Top 100 Shared Factors Used   Diversity-0.22382996 %93 %
6Search Result Domain is .com, .net, or .org   Other-0.21116 %69 %
7Number of Top 50 Shared Factors Used   Diversity-0.21171295 %93 %
8Entities in Title Tag   Relevancy-0.28362 %88 %
9Search Result Domain is .com   Other-0.2116 %69 %
10Variations in Search Result Document File Name   Relevancy-0.25140 %87 %
11Variations in H1-H6 Tags   Relevancy-0.2185761 %91 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2139660 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.260458 %90 %
14Number of Factors Used   Diversity-0.227917296 %90 %
15Variations in P Tags   Relevancy-0.1944162963 %91 %
16Variations in Body Tags   Relevancy-0.1912616031675 %90 %
17Number of Distinct Entities Used   Diversity-0.19632672 %88 %
18Variations in HTML Tags   Relevancy-0.1912616031675 %90 %
19Variations in Search Result URL Path   Relevancy-0.195142 %88 %
20Variations in Div Tags   Relevancy-0.194812013071 %91 %
21Entities in H1 Tags-0.1810250 %87 %
22Variations in Sentences   Relevancy-0.1843403369 %90 %
23Variations in Search Result URL   Relevancy-0.1817251 %84 %
24Variations in H1 Tags   Relevancy-0.188150 %88 %
25Term Frequency   Relevancy-0.185375 %90 %
26Entities in H2 Tags-0.1844648 %88 %
27Variations in LI Tags   Relevancy-0.1844662261 %90 %
28Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1816240 %87 %
29Variations in A Tags   Relevancy-0.1855072561 %88 %
30Word Count   Size-0.187059135581 %90 %
31Unabridged Word Count   Size-0.1814365175581 %90 %
32Variations in the Title Tag   Relevancy-0.1812263 %86 %
33Leading Variations in H1-H6 Tags   Relevancy-0.1721242 %88 %
34Variations in H2 Tags   Relevancy-0.1754343 %87 %
35Variations in Search Result Link Text   Relevancy-0.1710278 %84 %
36Variations in Search Result Display URL   Relevancy-0.1710278 %84 %
37Variation Count in Top 30KB   Relevancy-0.1751472663 %89 %
38Clean Text Kilobytes   Size-0.17761270 %90 %
39LSI Words in Sentences   Relevancy-0.17422265761 %96 %
40Number of P Tags   Size-0.171463570 %89 %
41Number of HTML Tags   Size-0.174502101081 %88 %
42Variations in First 100 Words   Relevancy-0.17151664 %88 %
43Variations in the Canonical URL   Relevancy-0.1735245 %87 %
44Number of Referring Domains   Authority-0.172360113041 %69 %
45Number of Images   Size-0.173223471 %89 %
46Number of H1 Tags   Size-0.174166 %89 %
47Number of Heading Tags   Size-0.17762071 %90 %
48Entities in the HTML Tag   Relevancy-0.1760911963 %96 %
49Entities in Sentences   Relevancy-0.1760611559 %96 %
50TF/IDF   Relevancy-0.171156 %87 %
51Number of Images with ALT Text   Size-0.162922666 %88 %
52LSI Words in Title Tag   Relevancy-0.1617563 %92 %
53Variations in Absolute URLs   Relevancy-0.16148615957 %89 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.1622042356 %88 %
55Leading Variations in Title Tag   Relevancy-0.161130 %86 %
56Number of H2 Tags   Size-0.1624764 %90 %
57Number of Backlinks   Authority-0.16653492871041 %70 %
58Variations in A Tag HREF Attributes   Relevancy-0.1632073656 %89 %
59Variations in Script Tags   Relevancy-0.164888110861 %85 %
60Number of HTTPS Links   Authority-0.16191914476 %87 %
61Number of DoFollow Links   Authority-0.16191814276 %87 %
62Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
63Number of Links   Authority-0.16192014576 %87 %
64Leading Variations in H1 Tags   Relevancy-0.162125 %86 %
65Variations in Meta Description   Relevancy-0.1632252 %85 %
66LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
67Variations in ALT Attributes   Relevancy-0.16861742 %87 %
68Variations in Span Tags   Relevancy-0.16582946 %88 %
69Clean Keyword Density in the HTML Tag   Relevancy-0.16173467 %83 %
70Number of Internal Links   Authority-0.1674312975 %88 %
71Percentage of DoFollow Links   Authority-0.16988076 %89 %
72Number of Includes   Technology-0.16522578 %83 %
73Number of Facebook Pages   Authority-0.1610253 %84 %
74Number of Do Follow Backlinks   Authority-0.16653204748338 %69 %
75Number of Sentences   Size-0.1654012379 %85 %
76Exact Matches in the HTML Tag   Relevancy-0.16271924 %87 %
77Variation Density in Top 30KB   Relevancy-0.16237258 %84 %
78Search Result Number of Dirs in Path   Other-0.165269 %80 %
79LSI Words in H2 Tags   Relevancy-0.161171952 %94 %
80Variations in OpenGraph Title   Relevancy-0.169151 %83 %
81Has JSON-LD Schema Markup   Relevancy-0.151150 %83 %
82Has Meta Charset   Technology-0.151169 %83 %
83Has Entities in H1 Tags   Relevancy-0.151150 %84 %
84Number Of JSON-LD Types   Relevancy-0.151331452 %86 %
85Entities in H3 Tags-0.1535640 %88 %
86Variations in Main Tags   Relevancy-0.15179926535 %86 %
87Percentage of DoFollow Internal Links   Authority-0.15907075 %86 %
88Entities in Meta Description Tag   Relevancy-0.159352 %85 %
89Variations in Nav Tags   Relevancy-0.1575262443 %87 %
90Number of No Follow Backlinks   Authority-0.15299474133331 %64 %
91Inline CSS Kilobytes   Size-0.151996162 %83 %
92Average Words Per Sentence   Size-0.151943073 %83 %
93Number of HTML Comments   Size-0.1510574966 %85 %
94Has Meta Viewport   Technology-0.151178 %85 %
95Search Result Uses HTTPS   Other-0.151181 %83 %
96Number of DoFollow External Links   Authority-0.1516031370 %86 %
97Number of H3 Tags   Size-0.1540856 %88 %
98Variations in H3 Tags   Relevancy-0.1580333 %88 %
99Number of JavaScript Includes   Technology-0.15351778 %82 %
100Number of External Links   Authority-0.1516041571 %86 %
101Variations in OpenGraph Description   Relevancy-0.1539247 %84 %
102Has Entities in H2 Tags   Relevancy-0.151149 %85 %
103Number of Absolute URLs   Authority-0.15209728580 %80 %
104Number of Images without ALT Text   Size-0.1569953 %86 %
105Search Result Domain Length   Size-0.14251681 %82 %
106Number of US Phone Numbers   Trust-0.147021643 %80 %
107Search Result Host Length   Size-0.14251681 %82 %
108Variations in Section Tags   Relevancy-0.145611736 %86 %
109Number of Social Pages   Authority-0.1424458 %84 %
110Number of Forms   Technology-0.1414248 %82 %
111Number of LinkedIn Pages   Authority-0.146129 %85 %
112LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
113Uses JSON-LD name   Other-0.141150 %81 %
114Leading Variations in H2 Tags   Relevancy-0.147120 %83 %
115Variations making whole H1-H6 Tags   Relevancy-0.142115 %84 %
116Title Tag Has Entities   Relevancy-0.141161 %82 %
117Number of Questions In Headings   Size-0.148235 %85 %
118Has Canonical URL   Authority-0.141167 %79 %
119Variations making whole H1, H2, and H3 Tags   Relevancy-0.141113 %85 %
120Page Size Kilobytes   Size-0.1490831080 %75 %
121Number of Email Addresses   Trust-0.14128440 %82 %
122Percentage of DoFollow External Links   Authority-0.14321169 %81 %
123Number of CSS Includes   Technology-0.1419970 %80 %
124Has US Phone Number   Trust-0.141142 %74 %
125Number of Questions   Size-0.142371264 %79 %
126Number of Instagram Pages   Authority-0.1320239 %81 %
127LSI Words in H3 Tags   Relevancy-0.132052045 %93 %
128Variations in Strong Tags   Relevancy-0.1371224 %85 %
129Uses Schema name   Other-0.131157 %75 %
130Title Word Count   Size-0.1330880 %73 %
131Has Form   Technology-0.131148 %79 %
132Variations in Footer Tags   Relevancy-0.1332251234 %85 %
133Has FavIcon   Technology-0.131172 %77 %
134Has Schema Markup   Relevancy-0.131160 %75 %
135Title Length   Size-0.131865080 %76 %
136Variations making whole A Tags   Relevancy-0.1313126 %83 %
137Variations Making Whole Span Tags   Relevancy-0.1311118 %83 %
138Number of H4 Tags   Size-0.1323333 %83 %
139Inline JavaScript Kilobytes   Size-0.1346312277 %72 %
140Number of Prices   Size-0.1310318365 %79 %
141Number of Social Accounts   Authority-0.1314239 %82 %
142Uses JSON-LD url   Other-0.131144 %81 %
143Uses JSON-LD BreadcrumbList   Other-0.131132 %77 %
144Meta Description Length   Size-0.1330011564 %77 %
145Variations Making Whole LI Tags   Relevancy-0.135121 %83 %
146Uses JSON-LD ListItem   Other-0.131132 %78 %
147Headings Has Question   Other-0.131134 %80 %
148Number of Questions In H2 Tags   Size-0.134122 %83 %
149Has Email   Trust-0.131140 %74 %
150Word Count in Meta Description   Size-0.13481964 %77 %
151Uses Schema url   Other-0.131153 %72 %
152Is Store Page   Other-0.131143 %70 %
153Has Contact Page   Trust-0.131157 %77 %
154Variations in TITLE Attributes   Relevancy-0.13260536 %81 %
155Number of Facebook Accounts   Authority-0.133126 %78 %
156Variations in the last 100 words   Relevancy-0.13147348 %77 %
157Exact Matches in H1-H6 Tags   Relevancy-0.1311115 %88 %
158Exact Matches in Top 30KB   Relevancy-0.1326214 %85 %
159Number Of Claimed Brands   Other-0.1243223 %83 %
160Has Meta Description   Relevancy-0.121163 %74 %
161Variations in I Tags   Relevancy-0.12293423 %81 %
162Has OpenGraph Type   Relevancy-0.121158 %73 %
163Has Privacy Policy   Trust-0.121153 %77 %
164Uses JSON-LD description   Other-0.121139 %74 %
165Is Article Page   Other-0.121141 %74 %
166Variations in Article Tags   Relevancy-0.122561122 %80 %
167Has Entities in H3 Tags   Relevancy-0.121140 %81 %
168Uses Schema postaladdress   Other-0.121120 %69 %
169Uses Schema breadcrumblist   Other-0.121139 %69 %
170Uses Schema addresslocality   Other-0.121119 %68 %
171Number of Questions In H3 Tags   Size-0.125116 %80 %
172Uses Microdata potentialAction   Other-0.12114 %18 %
173Entities in H4 Tags-0.1225218 %84 %
174Uses JSON-LD PostalAddress   Other-0.121119 %69 %
175Variations making whole H1 Tags   Relevancy-0.12118 %83 %
176Uses Schema streetaddress   Other-0.121118 %69 %
177Uses Schema postalcode   Other-0.121118 %68 %
178Has Apple Touch Icon   Technology-0.121147 %74 %
179Uses Microdata target   Other-0.12113 %19 %
180Uses Schema listitem   Other-0.121140 %70 %
181Uses Schema organization   Other-0.121133 %71 %
182Exact Matches in Title Tag   Relevancy-0.122113 %85 %
183Variations in H4-H6 Tags   Relevancy-0.1247116 %80 %
184Uses Schema webpage   Other-0.121132 %72 %
185Uses Microdata SearchAction   Other-0.12113 %18 %
186Uses JSON-LD addressLocality   Other-0.121118 %70 %
187Uses JSON-LD postalCode   Other-0.121117 %69 %
188Is OpenGraph Type Article   Technology-0.121130 %68 %
189Number of Twitter Accounts   Authority-0.1213122 %79 %
190Has OpenGraph Image   Relevancy-0.121151 %71 %
191Uses JSON-LD ImageObject   Other-0.121129 %74 %
192Uses JSON-LD streetAddress   Other-0.121117 %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 %
196Has Meta Twitter Card   Authority-0.121151 %67 %
197Uses Schema potentialaction   Other-0.12114 %18 %
198Exact Matches in Sentences   Relevancy-0.1243216 %90 %
199Uses Schema addressregion   Other-0.121120 %63 %
200Uses Schema telephone   Other-0.121120 %70 %