Measures 148032 SEO Factors

146310 Built-In SEO Factors

137141 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-0.2430780 %88 %
2Number of Unique LSI Words Used   Diversity-0.2299730182 %69 %
3Load Time Milliseconds   Performance-0.2222536149685 %92 %
4Search Result Domain is .com, .net, or .org   Other-0.22115 %75 %
5Number of Top 100 Shared Factors Used   Diversity-0.22392998 %94 %
6Number of Top 50 Shared Factors Used   Diversity-0.22171297 %94 %
7Number of Top 200 Shared Factors Used   Diversity-0.22523898 %93 %
8Search Result Domain is .com   Other-0.21114 %75 %
9Entities in Title Tag   Relevancy-0.218365 %94 %
10Variations in H1-H6 Tags   Relevancy-0.21144763 %91 %
11Number of Distinct Entities Used   Diversity-0.21682674 %95 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.291762 %92 %
13Variations in H1 and H2 Tags   Relevancy-0.246460 %91 %
14Variations in Div Tags   Relevancy-0.21892013874 %93 %
15Variations in Body Tags   Relevancy-0.25618225878 %92 %
16Variations in P Tags   Relevancy-0.215023266 %92 %
17Variations in Sentences   Relevancy-0.216283971 %92 %
18Variations in HTML Tags   Relevancy-0.25618225678 %93 %
19Number of Factors Used   Diversity-0.1928517798 %91 %
20Variations in LI Tags   Relevancy-0.196022164 %91 %
21Term Frequency   Relevancy-0.196378 %92 %
22Variations in H2 Tags   Relevancy-0.1836347 %90 %
23Entities in H1 Tags-0.188251 %92 %
24Entities in H2 Tags-0.1836751 %94 %
25Variations in the Title Tag   Relevancy-0.1811264 %87 %
26Entities in the HTML Tag   Relevancy-0.1886713668 %97 %
27Entities in Sentences   Relevancy-0.1876213265 %97 %
28Variations in H1 Tags   Relevancy-0.1811152 %85 %
29Variations in First 100 Words   Relevancy-0.18178765 %88 %
30Variations in Search Result Document File Name   Relevancy-0.184142 %82 %
31Variations in A Tags   Relevancy-0.1819412364 %89 %
32Variations in Meta Description   Relevancy-0.1835255 %87 %
33Variations in Search Result Display URL   Relevancy-0.179279 %85 %
34Variations in Search Result Link Text   Relevancy-0.179279 %85 %
35Leading Variations in H1-H6 Tags   Relevancy-0.1729243 %88 %
36Variation Count in Top 30KB   Relevancy-0.1741422566 %88 %
37Word Count   Size-0.1710039148684 %90 %
38Variations in Search Result URL Path   Relevancy-0.174144 %82 %
39Unabridged Word Count   Size-0.1746360196284 %90 %
40Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %83 %
41Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716241 %88 %
42Variation Density in Top 30KB   Relevancy-0.17290361 %83 %
43Number of Referring Domains   Authority-0.174628731748 %75 %
44Clean Text Kilobytes   Size-0.172321375 %89 %
45Number of P Tags   Size-0.1716534274 %89 %
46Entities in Meta Description Tag   Relevancy-0.1715356 %90 %
47Number of Backlinks   Authority-0.1763097093606848 %77 %
48Number of Includes   Technology-0.17592780 %83 %
49Number of HTML Tags   Size-0.17855299984 %90 %
50Variations in A Tag HREF Attributes   Relevancy-0.179374059 %91 %
51Variations in OpenGraph Title   Relevancy-0.178154 %83 %
52Variations in the Canonical URL   Relevancy-0.1735248 %85 %
53Variations in OpenGraph Description   Relevancy-0.1730250 %84 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102659 %91 %
55Variations in ALT Attributes   Relevancy-0.1691746 %88 %
56Number of Images   Size-0.162393076 %89 %
57Entities in H3 Tags-0.1627743 %94 %
58TF/IDF   Relevancy-0.161157 %88 %
59Number of Heading Tags   Size-0.161332276 %89 %
60Number of Do Follow Backlinks   Authority-0.1626127531990044 %76 %
61Number of No Follow Backlinks   Authority-0.1630775371342037 %72 %
62Variations in Absolute URLs   Relevancy-0.1650956261 %90 %
63Variations in Script Tags   Relevancy-0.1612075863 %88 %
64Percentage of DoFollow Internal Links   Authority-0.16917279 %88 %
65Number of H2 Tags   Size-0.1624768 %89 %
66Number of Sentences   Size-0.1683612882 %88 %
67Has JSON-LD Schema Markup   Relevancy-0.161154 %80 %
68Variations in Span Tags   Relevancy-0.16359950 %90 %
69Number of Images with ALT Text   Size-0.161222071 %90 %
70Number of CSS Includes   Technology-0.16281073 %81 %
71Variations in H3 Tags   Relevancy-0.1646336 %86 %
72Number of Facebook Pages   Authority-0.166258 %83 %
73Percentage of DoFollow Links   Authority-0.151008280 %89 %
74Number of H1 Tags   Size-0.154169 %87 %
75Variations in Main Tags   Relevancy-0.1552926136 %88 %
76Number of Internal Links   Authority-0.1538911979 %86 %
77Variations in Search Result URL   Relevancy-0.154253 %79 %
78Number of Links   Authority-0.1539713279 %86 %
79Number of DoFollow Links   Authority-0.1539612979 %86 %
80LSI Words in Title Tag   Relevancy-0.1517559 %95 %
81Number of HTTPS Links   Authority-0.1539613179 %87 %
82Variations in Nav Tags   Relevancy-0.1524932746 %87 %
83Search Result Number of Dirs in Path   Other-0.153272 %76 %
84Number Of JSON-LD Types   Relevancy-0.15721456 %86 %
85Leading Variations in H1 Tags   Relevancy-0.152124 %81 %
86Flesch Kincaid Reading Grade Level   Other-0.157294 %89 %
87Number of H3 Tags   Size-0.1551960 %86 %
88Leading Variations in Title Tag   Relevancy-0.151128 %84 %
89Has Entities in H1 Tags   Relevancy-0.151152 %88 %
90LSI Words in Sentences   Relevancy-0.15319963657 %96 %
91Number of Questions In Headings   Size-0.1511338 %87 %
92Number of Questions   Size-0.152571267 %84 %
93Number of HTML Comments   Size-0.155164571 %87 %
94Number of Absolute URLs   Authority-0.1495126683 %82 %
95Search Result Domain Length   Size-0.14251784 %81 %
96Search Result Host Length   Size-0.14251784 %81 %
97Uses Microdata latitude   Other-0.14117 %15 %
98Uses Microdata longitude   Other-0.14117 %15 %
99Title Tag Has Entities   Relevancy-0.141164 %88 %
100Variations in Section Tags   Relevancy-0.148251836 %86 %
101Uses Microdata priceRange   Other-0.14117 %15 %
102Number of Instagram Pages   Authority-0.1419246 %78 %
103Meta Description Length   Size-0.1424511867 %82 %
104Number of External Links   Authority-0.14551475 %84 %
105Variations in Footer Tags   Relevancy-0.1424611238 %86 %
106Exact Matches in the HTML Tag   Relevancy-0.14213725 %89 %
107Number of JavaScript Includes   Technology-0.14501881 %81 %
108Uses Microdata GeoCoordinates   Other-0.14116 %16 %
109Number of DoFollow External Links   Authority-0.14541274 %82 %
110Variations in Strong Tags   Relevancy-0.1450326 %84 %
111Uses Microdata geo   Other-0.14116 %17 %
112LSI Words in H1 Tags   Relevancy-0.1431448 %93 %
113Number of Images without ALT Text   Size-0.142181158 %84 %
114Word Count in Meta Description   Size-0.14581967 %82 %
115Number of LinkedIn Pages   Authority-0.1414131 %76 %
116Has Canonical URL   Authority-0.141171 %82 %
117Uses Schema geo   Other-0.14116 %17 %
118Has Meta Viewport   Technology-0.141181 %84 %
119Has Meta Description   Relevancy-0.141166 %79 %
120Has Entities in H2 Tags   Relevancy-0.141151 %88 %
121Search Result Uses HTTPS   Other-0.141184 %86 %
122Number of Forms   Technology-0.1411251 %79 %
123Number of Questions In H2 Tags   Size-0.144125 %83 %
124LSI Words in Meta Description Tag   Relevancy-0.1423949 %93 %
125Leading Variations in H2 Tags   Relevancy-0.1415121 %84 %
126Inline CSS Kilobytes   Size-0.141756366 %84 %
127Has Privacy Policy   Trust-0.141155 %75 %
128Uses Microdata email   Other-0.14116 %16 %
129Is Home Page   Other-0.141120 %52 %
130LSI Words in H2 Tags   Relevancy-0.141381949 %95 %
131Uses JSON-LD name   Other-0.131154 %79 %
132Title Length   Size-0.131755182 %79 %
133Variations in the last 100 words   Relevancy-0.13183450 %86 %
134Page Size Kilobytes   Size-0.1381630483 %80 %
135Number of Social Pages   Authority-0.1321565 %81 %
136Has FavIcon   Technology-0.131175 %80 %
137Variations making whole A Tags   Relevancy-0.1325128 %80 %
138Has Meta Charset   Technology-0.131173 %81 %
139Average Words Per Sentence   Size-0.131392978 %80 %
140Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %80 %
141Variations making whole H1-H6 Tags   Relevancy-0.1315115 %81 %
142Uses Schema name   Other-0.131160 %73 %
143Has OpenGraph Type   Relevancy-0.131162 %75 %
144Uses Microdata addressCountry   Other-0.13115 %19 %
145Has OpenGraph Image   Relevancy-0.131155 %75 %
146Variations Making Whole Span Tags   Relevancy-0.1315119 %85 %
147Variations in Article Tags   Relevancy-0.132751424 %80 %
148Headings Has Question   Other-0.131138 %81 %
149Variations in Meta Twitter Description   Relevancy-0.1315124 %77 %
150Title Word Count   Size-0.1320882 %78 %
151Number of Facebook Accounts   Authority-0.133127 %78 %
152Has Form   Technology-0.131150 %74 %
153Meta Description Tag Has Entities   Relevancy-0.131155 %84 %
154Variations in Meta Twitter Content   Relevancy-0.134126 %77 %
155Inline JavaScript Kilobytes   Size-0.1349211780 %74 %
156Has Schema Markup   Relevancy-0.131164 %77 %
157Percentage of DoFollow External Links   Authority-0.13261173 %77 %
158Has Entities in H3 Tags   Relevancy-0.131143 %87 %
159Number of Questions In H3 Tags   Size-0.137217 %82 %
160Number of US Phone Numbers   Trust-0.1312201838 %77 %
161Uses Schema organization   Other-0.131136 %73 %
162Uses JSON-LD url   Other-0.131145 %78 %
163Has Email   Trust-0.131144 %75 %
164Number of Email Addresses   Trust-0.13190544 %80 %
165Uses Schema url   Other-0.121156 %70 %
166Has Contact Page   Trust-0.121162 %76 %
167Uses Microdata LocalBusiness   Other-0.12115 %24 %
168Variations Making Whole LI Tags   Relevancy-0.124124 %81 %
169Leading Variations in H3 Tags   Relevancy-0.1215116 %81 %
170Variations in Button Tags   Relevancy-0.12337310 %81 %
171Number of Prices   Size-0.1223637668 %81 %
172Number of Social Accounts   Authority-0.1215242 %79 %
173Uses Schema telephone   Other-0.121121 %66 %
174Variations in TITLE Attributes   Relevancy-0.12138537 %83 %
175Exact Matches in Top 30KB   Relevancy-0.1217114 %84 %
176Has US Phone Number   Trust-0.121141 %65 %
177Uses Schema image   Other-0.121122 %66 %
178Uses JSON-LD Organization   Other-0.121133 %75 %
179Variations making whole H1 Tags   Relevancy-0.12117 %77 %
180Has Meta Twitter Card   Authority-0.121153 %74 %
181LSI Words in H3 Tags   Relevancy-0.121032042 %93 %
182Uses JSON-LD image   Other-0.121117 %71 %
183Has Terms of Service   Trust-0.121138 %71 %
184Variations in I Tags   Relevancy-0.12308423 %80 %
185Exact Matches in H1-H6 Tags   Relevancy-0.128115 %87 %
186Is Article Page   Other-0.121144 %68 %
187Is Store Page   Other-0.121144 %68 %
188Uses JSON-LD FAQPage   Other-0.12119 %70 %
189Uses Schema faqpage   Other-0.12119 %69 %
190Number of H4 Tags   Size-0.1299437 %83 %
191Entities in H4 Tags-0.1215219 %88 %
192Uses JSON-LD addressRegion   Other-0.121118 %66 %
193Uses JSON-LD dayOfWeek   Other-0.12115 %33 %
194Uses Schema postaladdress   Other-0.121120 %66 %
195Uses Schema addressregion   Other-0.121119 %65 %
196Uses Schema pricerange   Other-0.121110 %53 %
197Uses Schema addresslocality   Other-0.121119 %66 %
198Uses JSON-LD description   Other-0.121142 %72 %
199Uses Schema question   Other-0.121110 %70 %
200Uses Schema dayofweek   Other-0.12115 %33 %