Measures 150019 SEO Factors

148297 Built-In SEO Factors

139100 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-0.2420717147481 %92 %
2Number of Unique LSI Words Used   Diversity-0.22121728479 %80 %
3Number of Unique Variations Used   Diversity-0.2219677 %91 %
4Number of Top 200 Shared Factors Used   Diversity-0.22513895 %93 %
5Number of Top 100 Shared Factors Used   Diversity-0.22382995 %93 %
6Number of Top 50 Shared Factors Used   Diversity-0.21171295 %93 %
7Entities in Title Tag   Relevancy-0.218363 %86 %
8Search Result Domain is .com, .net, or .org   Other-0.21116 %67 %
9Variations in Search Result Document File Name   Relevancy-0.25140 %86 %
10Variations in H1-H6 Tags   Relevancy-0.2128761 %91 %
11Variations in H1 and H2 Tags   Relevancy-0.240458 %90 %
12Number of Factors Used   Diversity-0.227017395 %91 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.2119660 %91 %
14Search Result Domain is .com   Other-0.2116 %66 %
15Number of Distinct Entities Used   Diversity-0.19632673 %87 %
16Variations in P Tags   Relevancy-0.198502763 %91 %
17Variations in Search Result URL Path   Relevancy-0.195141 %88 %
18Variations in Body Tags   Relevancy-0.196431125975 %90 %
19Variations in HTML Tags   Relevancy-0.196431125875 %90 %
20Entities in H1 Tags-0.1910251 %85 %
21Variations in Div Tags   Relevancy-0.192011910771 %90 %
22Variations in Search Result URL   Relevancy-0.1817250 %84 %
23Entities in H2 Tags-0.1844649 %87 %
24Variations in H1 Tags   Relevancy-0.188151 %87 %
25Variations in Sentences   Relevancy-0.1823293169 %90 %
26Term Frequency   Relevancy-0.184375 %91 %
27Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811240 %87 %
28Variations in the Title Tag   Relevancy-0.189263 %86 %
29Variations in A Tags   Relevancy-0.1829372261 %89 %
30Variations in LI Tags   Relevancy-0.1815632061 %91 %
31Leading Variations in H1-H6 Tags   Relevancy-0.1812243 %87 %
32Variations in Search Result Link Text   Relevancy-0.1810278 %86 %
33Variations in Search Result Display URL   Relevancy-0.1810278 %86 %
34Variations in H2 Tags   Relevancy-0.1732344 %87 %
35Unabridged Word Count   Size-0.1714365173381 %90 %
36Word Count   Size-0.176869134981 %90 %
37LSI Words in Sentences   Relevancy-0.17422267162 %96 %
38Variation Count in Top 30KB   Relevancy-0.1741412564 %89 %
39Variations in First 100 Words   Relevancy-0.17118665 %88 %
40Number of P Tags   Size-0.171463570 %89 %
41Variations in the Canonical URL   Relevancy-0.1722246 %87 %
42Clean Text Kilobytes   Size-0.17761270 %90 %
43TF/IDF   Relevancy-0.171156 %88 %
44Number of HTML Tags   Size-0.174502103081 %88 %
45Number of Images   Size-0.173223672 %89 %
46Entities in the HTML Tag   Relevancy-0.1745711964 %96 %
47Entities in Sentences   Relevancy-0.1745111660 %96 %
48LSI Words in Title Tag   Relevancy-0.1714564 %92 %
49Leading Variations in H1 Tags   Relevancy-0.172126 %86 %
50Leading Variations in Title Tag   Relevancy-0.171130 %88 %
51Number of H1 Tags   Size-0.174166 %89 %
52Variations in Absolute URLs   Relevancy-0.1665735157 %89 %
53Number of Referring Domains   Authority-0.162360115041 %67 %
54Number of Heading Tags   Size-0.16762172 %89 %
55Number of Images with ALT Text   Size-0.162922766 %88 %
56Variations in Distinct A Tag HREF Attributes   Relevancy-0.1610692357 %88 %
57Variations in Script Tags   Relevancy-0.16244758461 %86 %
58Variations in A Tag HREF Attributes   Relevancy-0.1616003557 %90 %
59LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
60Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
61Exact Matches in the HTML Tag   Relevancy-0.16271925 %89 %
62Variations in Meta Description   Relevancy-0.1623253 %86 %
63Variations in ALT Attributes   Relevancy-0.16861743 %87 %
64Number of Backlinks   Authority-0.16653492994141 %68 %
65Variations in Span Tags   Relevancy-0.16582847 %88 %
66Percentage of DoFollow Links   Authority-0.16988176 %90 %
67Number of Includes   Technology-0.16522578 %83 %
68Number of H2 Tags   Size-0.1624765 %90 %
69Number of HTTPS Links   Authority-0.16191914976 %87 %
70Number of DoFollow Links   Authority-0.16191814676 %87 %
71Clean Keyword Density in the HTML Tag   Relevancy-0.16136467 %84 %
72Number of Links   Authority-0.16192015076 %87 %
73Number of Sentences   Size-0.1649012379 %87 %
74Number of Facebook Pages   Authority-0.1610254 %85 %
75LSI Words in H2 Tags   Relevancy-0.161172053 %94 %
76Variation Density in Top 30KB   Relevancy-0.16192259 %84 %
77Search Result Number of Dirs in Path   Other-0.165267 %79 %
78Number of Internal Links   Authority-0.1674313475 %87 %
79Has Entities in H1 Tags   Relevancy-0.161152 %83 %
80Variations in OpenGraph Title   Relevancy-0.166151 %83 %
81Has JSON-LD Schema Markup   Relevancy-0.161151 %83 %
82Has Meta Charset   Technology-0.161169 %83 %
83Entities in H3 Tags-0.1635641 %86 %
84Number of Do Follow Backlinks   Authority-0.15653204846337 %67 %
85Entities in Meta Description Tag   Relevancy-0.159354 %84 %
86Inline CSS Kilobytes   Size-0.151996162 %84 %
87Number Of JSON-LD Types   Relevancy-0.151331453 %87 %
88Percentage of DoFollow Internal Links   Authority-0.15907075 %87 %
89Variations in Nav Tags   Relevancy-0.1514501944 %88 %
90Variations in Main Tags   Relevancy-0.15109155636 %87 %
91Has Meta Viewport   Technology-0.151178 %86 %
92Has Entities in H2 Tags   Relevancy-0.151150 %83 %
93Search Result Uses HTTPS   Other-0.151180 %84 %
94Variations in H3 Tags   Relevancy-0.1580333 %89 %
95Number of JavaScript Includes   Technology-0.15351678 %83 %
96Average Words Per Sentence   Size-0.151943073 %83 %
97Number of Absolute URLs   Authority-0.15209729080 %81 %
98Number of H3 Tags   Size-0.1540956 %88 %
99Variations in OpenGraph Description   Relevancy-0.1521247 %84 %
100Number of DoFollow External Links   Authority-0.1516031470 %87 %
101Number of Images without ALT Text   Size-0.15691054 %87 %
102Number of No Follow Backlinks   Authority-0.15299474157731 %62 %
103Number of HTML Comments   Size-0.1510575067 %85 %
104Number of LinkedIn Pages   Authority-0.156129 %86 %
105Title Tag Has Entities   Relevancy-0.141163 %81 %
106Number of Social Pages   Authority-0.1424459 %84 %
107Search Result Domain Length   Size-0.14251681 %82 %
108Number of External Links   Authority-0.1416041571 %86 %
109Variations in Section Tags   Relevancy-0.145611836 %86 %
110Search Result Host Length   Size-0.14251681 %82 %
111Number of US Phone Numbers   Trust-0.147021643 %81 %
112LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
113Number of Forms   Technology-0.1414248 %82 %
114Uses JSON-LD name   Other-0.141150 %82 %
115Page Size Kilobytes   Size-0.1490831080 %77 %
116Leading Variations in H2 Tags   Relevancy-0.144121 %83 %
117Number of Email Addresses   Trust-0.14122440 %83 %
118Variations making whole H1-H6 Tags   Relevancy-0.142115 %84 %
119Number of Questions In Headings   Size-0.148235 %86 %
120Has Canonical URL   Authority-0.141167 %79 %
121Number of CSS Includes   Technology-0.1419970 %79 %
122Variations making whole H1, H2, and H3 Tags   Relevancy-0.141113 %85 %
123Percentage of DoFollow External Links   Authority-0.14321169 %82 %
124Number of Questions   Size-0.142371265 %80 %
125Variations in Strong Tags   Relevancy-0.1427225 %85 %
126Inline JavaScript Kilobytes   Size-0.1446311977 %72 %
127LSI Words in H3 Tags   Relevancy-0.142052146 %93 %
128Number of Instagram Pages   Authority-0.1420239 %81 %
129Uses Schema name   Other-0.141157 %76 %
130Has Schema Markup   Relevancy-0.141160 %76 %
131Number of Prices   Size-0.1310318364 %80 %
132Has US Phone Number   Trust-0.131143 %76 %
133Has FavIcon   Technology-0.131172 %78 %
134Title Word Count   Size-0.1315880 %73 %
135Variations Making Whole Span Tags   Relevancy-0.1311118 %84 %
136Variations in Footer Tags   Relevancy-0.139311134 %85 %
137Has Email   Trust-0.131140 %74 %
138Uses JSON-LD BreadcrumbList   Other-0.131132 %78 %
139Variations making whole A Tags   Relevancy-0.1313126 %82 %
140Uses JSON-LD url   Other-0.131144 %80 %
141Headings Has Question   Other-0.131135 %80 %
142Number of Social Accounts   Authority-0.1314239 %82 %
143Has Form   Technology-0.131148 %79 %
144Uses JSON-LD ListItem   Other-0.131132 %78 %
145Title Length   Size-0.131115080 %76 %
146Number of H4 Tags   Size-0.1319333 %83 %
147Variations Making Whole LI Tags   Relevancy-0.135121 %83 %
148Meta Description Length   Size-0.1330011564 %77 %
149Word Count in Meta Description   Size-0.13481964 %77 %
150Uses Schema url   Other-0.131153 %73 %
151Exact Matches in H1-H6 Tags   Relevancy-0.1311115 %88 %
152Is Store Page   Other-0.131143 %71 %
153Number Of Claimed Brands   Other-0.1343222 %84 %
154Number of Questions In H2 Tags   Size-0.134123 %83 %
155Variations in TITLE Attributes   Relevancy-0.13260635 %81 %
156Has Meta Description   Relevancy-0.131163 %74 %
157Variations in the last 100 words   Relevancy-0.13116349 %77 %
158Number of Facebook Accounts   Authority-0.133126 %77 %
159Exact Matches in Top 30KB   Relevancy-0.1326214 %85 %
160Uses JSON-LD description   Other-0.131139 %74 %
161Has Entities in H3 Tags   Relevancy-0.131142 %80 %
162Uses Microdata potentialAction   Other-0.12114 %20 %
163Has Contact Page   Trust-0.121156 %77 %
164Is Article Page   Other-0.121141 %74 %
165Uses Microdata SearchAction   Other-0.12114 %20 %
166Uses Microdata target   Other-0.12114 %21 %
167Uses Schema breadcrumblist   Other-0.121139 %71 %
168Variations in I Tags   Relevancy-0.12293423 %81 %
169Uses Schema postaladdress   Other-0.121120 %70 %
170Entities in H4 Tags-0.1225219 %83 %
171Has OpenGraph Type   Relevancy-0.121158 %73 %
172Uses Schema addresslocality   Other-0.121119 %70 %
173Number of Questions In H3 Tags   Size-0.125116 %80 %
174Uses Schema listitem   Other-0.121139 %71 %
175Uses JSON-LD PostalAddress   Other-0.121119 %70 %
176Uses Schema webpage   Other-0.121132 %72 %
177Exact Matches in Title Tag   Relevancy-0.122113 %86 %
178Uses Schema potentialaction   Other-0.12114 %20 %
179Has Privacy Policy   Trust-0.121153 %77 %
180Has Apple Touch Icon   Technology-0.121148 %74 %
181Variations in Article Tags   Relevancy-0.122561122 %80 %
182Uses Schema streetaddress   Other-0.121118 %70 %
183Uses Schema postalcode   Other-0.121118 %70 %
184Uses JSON-LD addressLocality   Other-0.121118 %70 %
185Is OpenGraph Type Article   Technology-0.121129 %69 %
186Uses JSON-LD postalCode   Other-0.121117 %70 %
187Uses JSON-LD streetAddress   Other-0.121117 %70 %
188Uses JSON-LD ImageObject   Other-0.121129 %74 %
189Meta Description Tag Has Entities   Relevancy-0.121154 %76 %
190Variations in H4-H6 Tags   Relevancy-0.1210117 %80 %
191Uses JSON-LD item   Other-0.121120 %74 %
192Uses Schema organization   Other-0.121132 %72 %
193Number of Twitter Accounts   Authority-0.1213122 %79 %
194Exact Matches in Sentences   Relevancy-0.1243216 %90 %
195Variations making whole H1 Tags   Relevancy-0.12118 %84 %
196Uses Schema image   Other-0.121120 %74 %
197Leading Variations in H3 Tags   Relevancy-0.127115 %80 %
198Uses JSON-LD image   Other-0.121116 %75 %
199Has OpenGraph Image   Relevancy-0.121150 %72 %
200Uses Schema localbusiness   Other-0.121112 %55 %