Measures 147975 SEO Factors

146253 Built-In SEO Factors

137084 On-page SEO Factors

9169 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-0.2330780 %87 %
2Number of Unique LSI Words Used   Diversity-0.2299730182 %69 %
3Number of Top 50 Shared Factors Used   Diversity-0.22171297 %93 %
4Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
5Load Time Milliseconds   Performance-0.2122536152685 %92 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
7Search Result Domain is .com, .net, or .org   Other-0.21114 %76 %
8Variations in H1-H6 Tags   Relevancy-0.21144863 %91 %
9Entities in Title Tag   Relevancy-0.218364 %94 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.291762 %91 %
11Number of Distinct Entities Used   Diversity-0.2682673 %95 %
12Search Result Domain is .com   Other-0.2114 %76 %
13Variations in H1 and H2 Tags   Relevancy-0.246460 %91 %
14Variations in Body Tags   Relevancy-0.25618226979 %92 %
15Variations in Div Tags   Relevancy-0.21892014273 %93 %
16Variations in Sentences   Relevancy-0.216284071 %92 %
17Variations in P Tags   Relevancy-0.215023366 %92 %
18Variations in HTML Tags   Relevancy-0.25618226578 %93 %
19Number of Factors Used   Diversity-0.1928517898 %90 %
20Variations in LI Tags   Relevancy-0.196022164 %90 %
21Term Frequency   Relevancy-0.196378 %91 %
22Variations in H2 Tags   Relevancy-0.1936348 %89 %
23Entities in H1 Tags-0.188251 %92 %
24Entities in H2 Tags-0.1836750 %94 %
25Variations in the Title Tag   Relevancy-0.1811264 %87 %
26Uses Microdata OpeningHoursSpecification-0.181110 %11 %
27Entities in the HTML Tag   Relevancy-0.1886713767 %97 %
28Variations in H1 Tags   Relevancy-0.1811152 %84 %
29Uses Microdata opens   Other-0.18119 %11 %
30Variations in First 100 Words   Relevancy-0.18178765 %88 %
31Variations in Search Result Document File Name   Relevancy-0.184143 %82 %
32Entities in Sentences   Relevancy-0.1876213464 %97 %
33Variations in A Tags   Relevancy-0.1819412464 %88 %
34Variation Count in Top 30KB   Relevancy-0.1741422666 %88 %
35Word Count   Size-0.1710039151584 %90 %
36Unabridged Word Count   Size-0.1746360200884 %90 %
37Variations in Meta Description   Relevancy-0.1735255 %86 %
38Number of Referring Domains   Authority-0.174628733647 %77 %
39Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %82 %
40Leading Variations in H1-H6 Tags   Relevancy-0.1729244 %87 %
41Variations in Search Result Display URL   Relevancy-0.179278 %83 %
42Variations in Search Result Link Text   Relevancy-0.179278 %83 %
43Variations in Search Result URL Path   Relevancy-0.174145 %82 %
44Clean Text Kilobytes   Size-0.172321375 %88 %
45Variation Density in Top 30KB   Relevancy-0.17290362 %82 %
46Number of Includes   Technology-0.17592780 %83 %
47Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716242 %87 %
48Number of Backlinks   Authority-0.1763097094037448 %78 %
49Number of P Tags   Size-0.1716534274 %89 %
50Variations in OpenGraph Title   Relevancy-0.178154 %82 %
51Entities in Meta Description Tag   Relevancy-0.1715356 %90 %
52Variations in OpenGraph Description   Relevancy-0.1730251 %83 %
53Number of HTML Tags   Size-0.17855299984 %91 %
54Has JSON-LD Schema Markup   Relevancy-0.171154 %80 %
55Variations in A Tag HREF Attributes   Relevancy-0.179373859 %91 %
56Variations in the Canonical URL   Relevancy-0.1635249 %84 %
57Variations in ALT Attributes   Relevancy-0.1691746 %88 %
58Variations in Distinct A Tag HREF Attributes   Relevancy-0.166102459 %91 %
59Entities in H3 Tags-0.1627742 %94 %
60Number of Do Follow Backlinks   Authority-0.1626127532164943 %77 %
61Number of No Follow Backlinks   Authority-0.1630775371527337 %73 %
62Variations in Script Tags   Relevancy-0.1612076063 %88 %
63Number of CSS Includes   Technology-0.16281073 %81 %
64Number of Heading Tags   Size-0.161332276 %90 %
65TF/IDF   Relevancy-0.161158 %87 %
66Number of H2 Tags   Size-0.1624768 %89 %
67Number of Images   Size-0.162393076 %90 %
68Variations in Absolute URLs   Relevancy-0.1650956261 %91 %
69Percentage of DoFollow Internal Links   Authority-0.16917279 %88 %
70Number of Sentences   Size-0.1683613283 %88 %
71Variations in H3 Tags   Relevancy-0.1646336 %87 %
72Number of Facebook Pages   Authority-0.166258 %83 %
73Variations in Span Tags   Relevancy-0.16359950 %90 %
74Variations in Main Tags   Relevancy-0.1652926437 %87 %
75Number of Images with ALT Text   Size-0.151222071 %90 %
76Number Of JSON-LD Types   Relevancy-0.15721456 %86 %
77Number of H1 Tags   Size-0.154170 %86 %
78Variations in Search Result URL   Relevancy-0.154253 %79 %
79Percentage of DoFollow Links   Authority-0.151008280 %90 %
80LSI Words in Title Tag   Relevancy-0.1517559 %95 %
81Number of Internal Links   Authority-0.1538911779 %87 %
82Number of Links   Authority-0.1539713179 %87 %
83Number of DoFollow Links   Authority-0.1539612780 %87 %
84Search Result Number of Dirs in Path   Other-0.153273 %76 %
85Number of HTTPS Links   Authority-0.1539612979 %88 %
86Variations in Nav Tags   Relevancy-0.1524932746 %87 %
87Number of H3 Tags   Size-0.1551961 %87 %
88Number of Questions   Size-0.152571367 %84 %
89Number of Questions In Headings   Size-0.1511338 %87 %
90Flesch Kincaid Reading Grade Level   Other-0.157294 %89 %
91Uses Microdata priceRange   Other-0.15117 %16 %
92Has Entities in H1 Tags   Relevancy-0.151151 %89 %
93Uses Microdata latitude   Other-0.15117 %16 %
94Uses Microdata longitude   Other-0.15117 %16 %
95LSI Words in Sentences   Relevancy-0.15319963757 %96 %
96Leading Variations in Title Tag   Relevancy-0.151128 %82 %
97Number of Instagram Pages   Authority-0.1419245 %78 %
98Leading Variations in H1 Tags   Relevancy-0.142124 %80 %
99Uses Microdata GeoCoordinates   Other-0.14117 %17 %
100Uses Microdata geo   Other-0.14117 %18 %
101Title Tag Has Entities   Relevancy-0.141164 %88 %
102Number of Absolute URLs   Authority-0.1495126883 %83 %
103Search Result Domain Length   Size-0.14251784 %80 %
104Search Result Host Length   Size-0.14251784 %80 %
105Variations in Section Tags   Relevancy-0.148251937 %86 %
106Number of HTML Comments   Size-0.145164771 %86 %
107Uses Schema geo   Other-0.14117 %18 %
108Uses Microdata email   Other-0.14117 %16 %
109Has Canonical URL   Authority-0.141171 %82 %
110Number of LinkedIn Pages   Authority-0.1414131 %77 %
111Variations in Strong Tags   Relevancy-0.1450327 %83 %
112Number of External Links   Authority-0.14551475 %84 %
113Meta Description Length   Size-0.1424511868 %82 %
114LSI Words in H1 Tags   Relevancy-0.1431448 %93 %
115Uses JSON-LD name   Other-0.141154 %79 %
116Number of DoFollow External Links   Authority-0.14541374 %83 %
117Number of JavaScript Includes   Technology-0.14501881 %81 %
118Word Count in Meta Description   Size-0.14581967 %81 %
119Uses Microdata addressCountry   Other-0.14116 %20 %
120Number of Questions In H2 Tags   Size-0.144125 %83 %
121Search Result Uses HTTPS   Other-0.141184 %86 %
122Leading Variations in H2 Tags   Relevancy-0.1415122 %83 %
123Has Meta Viewport   Technology-0.141182 %83 %
124Variations in Footer Tags   Relevancy-0.1424611337 %87 %
125Is Home Page   Other-0.141119 %50 %
126Has Entities in H2 Tags   Relevancy-0.141151 %88 %
127Number of Images without ALT Text   Size-0.142181158 %84 %
128LSI Words in H2 Tags   Relevancy-0.141381949 %95 %
129Has Privacy Policy   Trust-0.141155 %74 %
130Has Meta Description   Relevancy-0.141166 %79 %
131Exact Matches in the HTML Tag   Relevancy-0.14213826 %89 %
132Variations in Article Tags   Relevancy-0.142751525 %81 %
133Inline CSS Kilobytes   Size-0.141756466 %84 %
134Uses Schema name   Other-0.131160 %73 %
135Number of Forms   Technology-0.1311251 %80 %
136LSI Words in Meta Description Tag   Relevancy-0.1322949 %93 %
137Variations in the last 100 words   Relevancy-0.13183449 %85 %
138Number of Social Pages   Authority-0.1321565 %81 %
139Variations making whole A Tags   Relevancy-0.1325128 %80 %
140Title Length   Size-0.131755182 %78 %
141Has FavIcon   Technology-0.131175 %80 %
142Has OpenGraph Image   Relevancy-0.131155 %76 %
143Page Size Kilobytes   Size-0.1381630883 %81 %
144Has OpenGraph Type   Relevancy-0.131162 %75 %
145Headings Has Question   Other-0.131138 %82 %
146Average Words Per Sentence   Size-0.131392878 %80 %
147Number of Facebook Accounts   Authority-0.133127 %78 %
148Variations in Meta Twitter Description   Relevancy-0.1315125 %77 %
149Has Schema Markup   Relevancy-0.131164 %77 %
150Variations Making Whole Span Tags   Relevancy-0.1315119 %84 %
151Percentage of DoFollow External Links   Authority-0.13261173 %76 %
152Uses JSON-LD url   Other-0.131145 %78 %
153Has Meta Charset   Technology-0.131174 %80 %
154Variations in Meta Twitter Content   Relevancy-0.134126 %77 %
155Uses Schema url   Other-0.131156 %70 %
156Uses Microdata LocalBusiness   Other-0.13115 %25 %
157Uses Schema organization   Other-0.131137 %72 %
158Title Word Count   Size-0.1320882 %77 %
159Inline JavaScript Kilobytes   Size-0.1349212180 %75 %
160Number of Questions In H3 Tags   Size-0.137218 %84 %
161Has Form   Technology-0.131150 %73 %
162Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %79 %
163Variations making whole H1-H6 Tags   Relevancy-0.1315115 %80 %
164Meta Description Tag Has Entities   Relevancy-0.131155 %84 %
165Has Entities in H3 Tags   Relevancy-0.131143 %88 %
166Uses Schema image   Other-0.131122 %65 %
167Leading Variations in H3 Tags   Relevancy-0.1215117 %81 %
168Uses JSON-LD image   Other-0.121117 %70 %
169Uses JSON-LD Organization   Other-0.121133 %75 %
170Variations in Button Tags   Relevancy-0.12337310 %82 %
171Number of Email Addresses   Trust-0.12190544 %80 %
172Uses JSON-LD dayOfWeek   Other-0.12116 %31 %
173Has Email   Trust-0.121144 %74 %
174Number of Prices   Size-0.1223637868 %81 %
175Number of US Phone Numbers   Trust-0.1212201938 %76 %
176Variations in TITLE Attributes   Relevancy-0.12138537 %83 %
177Uses JSON-LD FAQPage   Other-0.12119 %71 %
178Variations Making Whole LI Tags   Relevancy-0.124124 %80 %
179Uses Schema faqpage   Other-0.121110 %70 %
180Uses Schema telephone   Other-0.121121 %65 %
181Uses Schema dayofweek   Other-0.12116 %31 %
182Is Article Page   Other-0.121145 %68 %
183Has Terms of Service   Trust-0.121138 %70 %
184Has Contact Page   Trust-0.121161 %76 %
185Uses Schema question   Other-0.121110 %71 %
186Uses Microdata streetAddress   Other-0.12115 %28 %
187Uses Schema text   Other-0.121114 %69 %
188Uses Schema answer   Other-0.121110 %70 %
189Uses Schema pricerange   Other-0.121111 %52 %
190Uses JSON-LD description   Other-0.121142 %72 %
191LSI Words in H3 Tags   Relevancy-0.121032042 %93 %
192Has Meta Twitter Card   Authority-0.121154 %74 %
193Is Store Page   Other-0.121143 %67 %
194Number of Social Accounts   Authority-0.1215242 %78 %
195Uses Microdata telephone   Other-0.12115 %29 %
196Uses Schema localbusiness   Other-0.121111 %53 %
197Number of Nofollow Links   Authority-0.1248423 %77 %
198Uses JSON-LD Question   Other-0.12119 %73 %
199Uses JSON-LD text   Other-0.121111 %73 %
200Uses JSON-LD Answer   Other-0.12119 %73 %