Measures 148902 SEO Factors

147180 Built-In SEO Factors

138008 On-page SEO Factors

9172 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 2026-01     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique Variations Used   Diversity-0.2430779 %89 %
2Number of Unique LSI Words Used   Diversity-0.2399730381 %67 %
3Search Result Domain is .com, .net, or .org   Other-0.23115 %75 %
4Search Result Domain is .com   Other-0.22115 %75 %
5Load Time Milliseconds   Performance-0.2222536150884 %92 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392898 %93 %
7Number of Top 200 Shared Factors Used   Diversity-0.22523898 %93 %
8Number of Top 50 Shared Factors Used   Diversity-0.22171297 %93 %
9Entities in Title Tag   Relevancy-0.218364 %93 %
10Number of Distinct Entities Used   Diversity-0.21682673 %94 %
11Variations in Div Tags   Relevancy-0.211892013272 %93 %
12Variations in H1-H6 Tags   Relevancy-0.2144762 %91 %
13Variations in Body Tags   Relevancy-0.25618224877 %91 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.291661 %91 %
15Variations in HTML Tags   Relevancy-0.25618224576 %93 %
16Variations in H1 and H2 Tags   Relevancy-0.246459 %91 %
17Variations in P Tags   Relevancy-0.215023065 %92 %
18Variations in Sentences   Relevancy-0.216283670 %92 %
19Variations in LI Tags   Relevancy-0.196022063 %90 %
20Term Frequency   Relevancy-0.196376 %91 %
21Number of Factors Used   Diversity-0.1928517498 %91 %
22Entities in the HTML Tag   Relevancy-0.1986713267 %97 %
23Variations in the Title Tag   Relevancy-0.1911263 %87 %
24Entities in Sentences   Relevancy-0.1876212964 %97 %
25Entities in H2 Tags-0.1836750 %94 %
26Entities in H1 Tags-0.188251 %91 %
27Variations in First 100 Words   Relevancy-0.18178764 %88 %
28Variations in A Tags   Relevancy-0.1819412363 %89 %
29Variations in H2 Tags   Relevancy-0.1836345 %90 %
30Number of Referring Domains   Authority-0.184628728149 %75 %
31Variations in Search Result Document File Name   Relevancy-0.184141 %81 %
32Variations in Meta Description   Relevancy-0.1835254 %87 %
33Variations in Search Result Display URL   Relevancy-0.189278 %84 %
34Variations in Search Result Link Text   Relevancy-0.189278 %84 %
35Variations in H1 Tags   Relevancy-0.1811150 %84 %
36Number of Backlinks   Authority-0.1863097093220949 %76 %
37Word Count   Size-0.1810039144783 %89 %
38Unabridged Word Count   Size-0.1846360189883 %89 %
39Clean Keyword Density in the HTML Tag   Relevancy-0.18181469 %83 %
40Clean Text Kilobytes   Size-0.182321375 %88 %
41Variation Density in Top 30KB   Relevancy-0.17290360 %83 %
42Variation Count in Top 30KB   Relevancy-0.1741422365 %88 %
43Leading Variations in H1-H6 Tags   Relevancy-0.1729242 %88 %
44Number of P Tags   Size-0.1716534073 %89 %
45Entities in Meta Description Tag   Relevancy-0.1715355 %90 %
46Number of HTML Tags   Size-0.178552100684 %90 %
47Variations in Search Result URL Path   Relevancy-0.174143 %82 %
48Variations in A Tag HREF Attributes   Relevancy-0.179374257 %91 %
49Number of Do Follow Backlinks   Authority-0.1726127531836345 %76 %
50Number of Images   Size-0.172393175 %88 %
51Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102757 %91 %
52Number of No Follow Backlinks   Authority-0.1730775371161939 %71 %
53Number of Includes   Technology-0.17592780 %83 %
54Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716240 %88 %
55Variations in ALT Attributes   Relevancy-0.1791745 %88 %
56Number of Images with ALT Text   Size-0.171222170 %89 %
57Entities in H3 Tags-0.1627742 %93 %
58TF/IDF   Relevancy-0.161156 %88 %
59Variations in Absolute URLs   Relevancy-0.1650956259 %90 %
60Number of Heading Tags   Size-0.161332175 %89 %
61Percentage of DoFollow Internal Links   Authority-0.16917178 %87 %
62Variations in the Canonical URL   Relevancy-0.1635247 %86 %
63Variations in OpenGraph Title   Relevancy-0.168153 %83 %
64Variations in OpenGraph Description   Relevancy-0.1630249 %83 %
65Variations in Span Tags   Relevancy-0.16359949 %90 %
66Variations in Script Tags   Relevancy-0.1612075461 %88 %
67Number of Facebook Pages   Authority-0.167258 %83 %
68Number of Sentences   Size-0.1683612582 %87 %
69Number of H2 Tags   Size-0.1624767 %89 %
70Number of Internal Links   Authority-0.1638912178 %86 %
71Number of DoFollow Links   Authority-0.1639613179 %86 %
72Number of CSS Includes   Technology-0.16281073 %81 %
73Number of Links   Authority-0.1639713579 %86 %
74Number of HTTPS Links   Authority-0.1639613379 %86 %
75Percentage of DoFollow Links   Authority-0.161008179 %89 %
76LSI Words in Title Tag   Relevancy-0.1617558 %95 %
77Has JSON-LD Schema Markup   Relevancy-0.161153 %79 %
78Variations in Nav Tags   Relevancy-0.1524932745 %87 %
79Variations in H3 Tags   Relevancy-0.1546334 %86 %
80Number of H1 Tags   Size-0.154168 %87 %
81Variations in Search Result URL   Relevancy-0.154251 %78 %
82Variations in Main Tags   Relevancy-0.1552925936 %87 %
83Number of HTML Comments   Size-0.155164671 %87 %
84LSI Words in Sentences   Relevancy-0.15319962756 %96 %
85Number of H3 Tags   Size-0.1551959 %85 %
86Number of Absolute URLs   Authority-0.1595126882 %82 %
87Is Home Page   Other-0.151123 %51 %
88Leading Variations in Title Tag   Relevancy-0.151127 %84 %
89Search Result Number of Dirs in Path   Other-0.153271 %75 %
90Leading Variations in H1 Tags   Relevancy-0.152123 %80 %
91Title Tag Has Entities   Relevancy-0.151164 %87 %
92Flesch Kincaid Reading Grade Level   Other-0.157194 %89 %
93Number of Instagram Pages   Authority-0.1519246 %78 %
94Number Of JSON-LD Types   Relevancy-0.15721455 %87 %
95Has Entities in H1 Tags   Relevancy-0.151151 %88 %
96Number of Forms   Technology-0.1411251 %79 %
97Number of JavaScript Includes   Technology-0.14501880 %82 %
98Number of Questions   Size-0.142571265 %83 %
99Number of Images without ALT Text   Size-0.142181157 %84 %
100Meta Description Length   Size-0.1424511667 %81 %
101Variations in Footer Tags   Relevancy-0.1424611137 %86 %
102Number of Questions In Headings   Size-0.1411336 %86 %
103Search Result Domain Length   Size-0.14251783 %82 %
104Search Result Host Length   Size-0.14251783 %82 %
105Variations in Strong Tags   Relevancy-0.1450326 %84 %
106Variations in Section Tags   Relevancy-0.148251735 %87 %
107Word Count in Meta Description   Size-0.14581966 %81 %
108Number of External Links   Authority-0.14551475 %83 %
109Number of DoFollow External Links   Authority-0.14541274 %82 %
110Has Canonical URL   Authority-0.141170 %82 %
111Inline CSS Kilobytes   Size-0.141756365 %85 %
112Has Meta Description   Relevancy-0.141165 %78 %
113Uses Microdata latitude   Other-0.14116 %14 %
114Uses Microdata longitude   Other-0.14116 %14 %
115LSI Words in Meta Description Tag   Relevancy-0.1423948 %93 %
116Has Entities in H2 Tags   Relevancy-0.141150 %87 %
117Number of US Phone Numbers   Trust-0.1412201739 %78 %
118Number of Social Pages   Authority-0.1421564 %81 %
119LSI Words in H1 Tags   Relevancy-0.1431448 %93 %
120Page Size Kilobytes   Size-0.1481630382 %80 %
121Has Meta Viewport   Technology-0.141181 %84 %
122Title Length   Size-0.141755081 %79 %
123Has Privacy Policy   Trust-0.141154 %73 %
124Uses Microdata GeoCoordinates   Other-0.14116 %15 %
125Average Words Per Sentence   Size-0.141392977 %80 %
126Uses Microdata geo   Other-0.14116 %16 %
127Leading Variations in H2 Tags   Relevancy-0.1415120 %84 %
128Variations making whole A Tags   Relevancy-0.1425128 %80 %
129Exact Matches in the HTML Tag   Relevancy-0.14288724 %88 %
130Number of LinkedIn Pages   Authority-0.1414130 %76 %
131Has Form   Technology-0.141151 %74 %
132Search Result Uses HTTPS   Other-0.141183 %86 %
133LSI Words in H2 Tags   Relevancy-0.131381948 %95 %
134Has US Phone Number   Trust-0.131141 %66 %
135Uses Microdata priceRange   Other-0.13116 %15 %
136Has Meta Charset   Technology-0.131173 %81 %
137Number of Facebook Accounts   Authority-0.134127 %78 %
138Variations in the last 100 words   Relevancy-0.13183349 %85 %
139Title Word Count   Size-0.1320881 %78 %
140Has FavIcon   Technology-0.131174 %80 %
141Uses Schema geo   Other-0.13116 %16 %
142Number of Questions In H2 Tags   Size-0.134124 %83 %
143Meta Description Tag Has Entities   Relevancy-0.131155 %83 %
144Uses JSON-LD name   Other-0.131153 %79 %
145Has Email   Trust-0.131143 %74 %
146Variations Making Whole Span Tags   Relevancy-0.1315119 %86 %
147Uses Microdata addressCountry   Other-0.13115 %18 %
148Number of Prices   Size-0.1323637567 %82 %
149Variations making whole H1-H6 Tags   Relevancy-0.1315114 %81 %
150Has Entities in H3 Tags   Relevancy-0.131142 %87 %
151Inline JavaScript Kilobytes   Size-0.1352711579 %75 %
152Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %80 %
153Has OpenGraph Type   Relevancy-0.131161 %75 %
154Number of Email Addresses   Trust-0.13190543 %81 %
155Uses Microdata email   Other-0.13116 %15 %
156Variations in Article Tags   Relevancy-0.132751424 %80 %
157Headings Has Question   Other-0.131136 %81 %
158Number of Social Accounts   Authority-0.1315242 %78 %
159Uses Schema name   Other-0.131160 %74 %
160Has OpenGraph Image   Relevancy-0.131154 %74 %
161Variations in Meta Twitter Description   Relevancy-0.1315123 %77 %
162Percentage of DoFollow External Links   Authority-0.13261173 %76 %
163Variations in Meta Twitter Content   Relevancy-0.134125 %76 %
164Variations in Button Tags   Relevancy-0.1333729 %81 %
165Is Store Page   Other-0.131144 %68 %
166Uses Schema telephone   Other-0.131120 %66 %
167Has Schema Markup   Relevancy-0.131163 %77 %
168Has Contact Page   Trust-0.131162 %75 %
169Variations in TITLE Attributes   Relevancy-0.13138537 %84 %
170Uses JSON-LD url   Other-0.131145 %77 %
171Uses Schema organization   Other-0.131136 %72 %
172Variations Making Whole LI Tags   Relevancy-0.134123 %81 %
173Number of Questions In H3 Tags   Size-0.127217 %82 %
174Uses JSON-LD dayOfWeek   Other-0.12114 %32 %
175Uses Schema dayofweek   Other-0.12114 %32 %
176Number Of Claimed Brands   Other-0.1225225 %78 %
177Uses Schema url   Other-0.121156 %71 %
178Variations in I Tags   Relevancy-0.12308423 %81 %
179Uses JSON-LD addressRegion   Other-0.121117 %65 %
180Uses Schema addressregion   Other-0.121118 %65 %
181Has Terms of Service   Trust-0.121138 %69 %
182Is Purchase Page   Other-0.121144 %66 %
183Uses JSON-LD Organization   Other-0.121132 %74 %
184Leading Variations in H3 Tags   Relevancy-0.1215116 %80 %
185Uses Microdata LocalBusiness   Other-0.12115 %25 %
186Uses Schema image   Other-0.121121 %67 %
187Uses Schema postaladdress   Other-0.121119 %67 %
188Uses Schema addresslocality   Other-0.121119 %66 %
189Has Meta Twitter Card   Authority-0.121153 %73 %
190Uses JSON-LD addressLocality   Other-0.121118 %67 %
191Uses JSON-LD telePhone   Other-0.121115 %70 %
192Uses JSON-LD PostalAddress   Other-0.121118 %68 %
193Uses JSON-LD streetAddress   Other-0.121117 %67 %
194Uses Schema faqpage   Other-0.12119 %67 %
195LSI Words in H3 Tags   Relevancy-0.121031941 %93 %
196Uses JSON-LD FAQPage   Other-0.12119 %68 %
197Number of H4 Tags   Size-0.1299436 %82 %
198Variations in ID Attributes   Relevancy-0.12354211 %82 %
199Number of Twitter Accounts   Authority-0.125124 %71 %
200Number of H5 Tags   Size-0.1220217 %77 %