Measures 146770 SEO Factors

145048 Built-In SEO Factors

135908 On-page SEO Factors

9140 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 2025-11     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.23134533183 %80 %
2Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
3Number of Distinct Entities Used   Diversity-0.211063079 %95 %
4Entities in Title Tag   Relevancy-0.217369 %94 %
5Load Time Milliseconds   Performance-0.2132075149184 %91 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
7Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
8Number of Unique Variations Used   Diversity-0.2129777 %88 %
9Search Result Domain is .com   Other-0.21114 %73 %
10Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
11Entities in the HTML Tag   Relevancy-0.286615275 %95 %
12Entities in Sentences   Relevancy-0.274514871 %95 %
13Variations in H1-H6 Tags   Relevancy-0.19195763 %87 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.19179662 %86 %
15Number of Referring Domains   Authority-0.19274412150 %70 %
16Entities in H1 Tags-0.196256 %91 %
17Number of Backlinks   Authority-0.19253638614850 %71 %
18Variations in H1 and H2 Tags   Relevancy-0.1962460 %86 %
19Variations in Body Tags   Relevancy-0.1816618029076 %89 %
20Variations in Div Tags   Relevancy-0.184488812472 %91 %
21Entities in H2 Tags-0.1833753 %92 %
22Variations in P Tags   Relevancy-0.18300804464 %89 %
23Variations in HTML Tags   Relevancy-0.1816618028675 %90 %
24Number of Do Follow Backlinks   Authority-0.18249326541646 %70 %
25Number of Factors Used   Diversity-0.1837517798 %89 %
26Variations in LI Tags   Relevancy-0.18524204663 %88 %
27Variations in Sentences   Relevancy-0.1775843669 %89 %
28Variations in Search Result Document File Name   Relevancy-0.176142 %79 %
29Term Frequency   Relevancy-0.175375 %88 %
30Entities in H3 Tags-0.1743745 %92 %
31LSI Words in Sentences   Relevancy-0.17370377466 %94 %
32Variation Count in Top 30KB   Relevancy-0.1739482063 %84 %
33Variations in Search Result Link Text   Relevancy-0.173278 %82 %
34Variations in Search Result Display URL   Relevancy-0.173278 %82 %
35Leading Variations in H1-H6 Tags   Relevancy-0.1721243 %86 %
36Unabridged Word Count   Size-0.1723497185784 %88 %
37Variations in A Tags   Relevancy-0.1766172463 %86 %
38Word Count   Size-0.176250145184 %88 %
39Variations in the Title Tag   Relevancy-0.1711262 %86 %
40Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %86 %
41Clean Text Kilobytes   Size-0.171381276 %88 %
42Number of Images   Size-0.173063276 %88 %
43Number of HTML Tags   Size-0.173693107684 %87 %
44Clean Keyword Density in the HTML Tag   Relevancy-0.17165367 %80 %
45Number of No Follow Backlinks   Authority-0.172706171138 %68 %
46Variations in H1 Tags   Relevancy-0.178152 %85 %
47Entities in Meta Description Tag   Relevancy-0.179359 %90 %
48Variations in Search Result URL Path   Relevancy-0.177144 %81 %
49Number of Images with ALT Text   Size-0.172792271 %86 %
50Number of Includes   Technology-0.16722780 %79 %
51Variations in H2 Tags   Relevancy-0.1654345 %84 %
52Number of Heading Tags   Size-0.16672275 %85 %
53Number of P Tags   Size-0.161353975 %87 %
54Has Entities in H1 Tags   Relevancy-0.161157 %87 %
55Search Result Number of Dirs in Path   Other-0.164273 %77 %
56Variations in First 100 Words   Relevancy-0.16151561 %84 %
57LSI Words in Title Tag   Relevancy-0.1616667 %93 %
58Variations in Meta Description   Relevancy-0.1640252 %83 %
59Number of HTTPS Links   Authority-0.1653614880 %86 %
60Title Tag Has Entities   Relevancy-0.161169 %87 %
61Number of Links   Authority-0.1653714980 %86 %
62Number of DoFollow Links   Authority-0.1652314580 %86 %
63Variations in ALT Attributes   Relevancy-0.16417743 %83 %
64Variations in the Canonical URL   Relevancy-0.1641246 %83 %
65Variation Density in Top 30KB   Relevancy-0.16295258 %81 %
66Variations in Main Tags   Relevancy-0.16145746136 %85 %
67Number of Internal Links   Authority-0.1652613479 %86 %
68Exact Matches in the HTML Tag   Relevancy-0.168261129 %84 %
69Percentage of DoFollow Links   Authority-0.16988280 %87 %
70LSI Words in H1 Tags   Relevancy-0.1618557 %92 %
71Variations in Span Tags   Relevancy-0.16834949 %88 %
72Variations in Distinct A Tag HREF Attributes   Relevancy-0.1519842357 %89 %
73Variations in A Tag HREF Attributes   Relevancy-0.1529773857 %89 %
74Number of Facebook Pages   Authority-0.1516259 %81 %
75Number of External Links   Authority-0.151061576 %85 %
76Leading Variations in Title Tag   Relevancy-0.151129 %81 %
77Number of DoFollow External Links   Authority-0.15661475 %85 %
78TF/IDF   Relevancy-0.151155 %85 %
79Number of H1 Tags   Size-0.1511270 %87 %
80Number of CSS Includes   Technology-0.15321073 %78 %
81Percentage of DoFollow Internal Links   Authority-0.15907279 %85 %
82Number of Forms   Technology-0.1519254 %82 %
83Variations in OpenGraph Description   Relevancy-0.154248 %79 %
84Variations in OpenGraph Title   Relevancy-0.157152 %78 %
85Number of HTML Comments   Size-0.157075572 %84 %
86Number of H2 Tags   Size-0.1521768 %86 %
87Variations in Absolute URLs   Relevancy-0.1595175358 %87 %
88Variations in Script Tags   Relevancy-0.158975611261 %84 %
89Variations in Search Result URL   Relevancy-0.1517152 %76 %
90Number of Images without ALT Text   Size-0.15651158 %85 %
91Has Entities in H2 Tags   Relevancy-0.151154 %86 %
92Number of Sentences   Size-0.1569713082 %83 %
93Leading Variations in H1 Tags   Relevancy-0.151126 %80 %
94Has Form   Technology-0.151153 %77 %
95Has JSON-LD Schema Markup   Relevancy-0.151153 %76 %
96Average Words Per Sentence   Size-0.153183177 %82 %
97Number of H3 Tags   Size-0.1533960 %84 %
98Flesch Kincaid Reading Grade Level   Other-0.156295 %87 %
99LSI Words in H2 Tags   Relevancy-0.14922155 %92 %
100Has Meta Charset   Technology-0.141174 %83 %
101LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
102Variations in Nav Tags   Relevancy-0.1483872745 %83 %
103Number of JavaScript Includes   Technology-0.14441881 %80 %
104Variations in H3 Tags   Relevancy-0.14118334 %83 %
105Exact Matches in H1-H6 Tags   Relevancy-0.1413118 %82 %
106Search Result Domain Length   Size-0.14271783 %78 %
107Search Result Host Length   Size-0.14271783 %78 %
108Has Entities in H3 Tags   Relevancy-0.141146 %84 %
109Number of Absolute URLs   Authority-0.1499028683 %79 %
110Entities in H4 Tags-0.1419222 %88 %
111Number Of JSON-LD Types   Relevancy-0.141501456 %82 %
112Variations in Section Tags   Relevancy-0.1410471736 %83 %
113Percentage of DoFollow External Links   Authority-0.14301174 %79 %
114Page Size Kilobytes   Size-0.14131632283 %76 %
115Inline CSS Kilobytes   Size-0.141916165 %81 %
116Search Result Uses HTTPS   Other-0.141183 %84 %
117Has Meta Viewport   Technology-0.141181 %82 %
118Variations making whole H1-H6 Tags   Relevancy-0.142115 %79 %
119Number of Questions In Headings   Size-0.148236 %82 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
121Leading Variations in H2 Tags   Relevancy-0.148121 %82 %
122LSI Words in H3 Tags   Relevancy-0.141272248 %89 %
123Variations in Footer Tags   Relevancy-0.1460121034 %82 %
124Number of Prices   Size-0.1329627569 %81 %
125Number of Instagram Pages   Authority-0.1312245 %78 %
126Has Canonical URL   Authority-0.131171 %78 %
127Number of Questions   Size-0.13811167 %78 %
128Number of Social Pages   Authority-0.1330464 %81 %
129Number of LinkedIn Pages   Authority-0.137133 %77 %
130Word Count in Meta Description   Size-0.13381967 %78 %
131Number of Email Addresses   Trust-0.13280543 %80 %
132Meta Description Length   Size-0.1324211867 %79 %
133Is Home Page   Other-0.131120 %45 %
134Has FavIcon   Technology-0.131175 %77 %
135Has Privacy Policy   Trust-0.131159 %74 %
136Has Meta Description   Relevancy-0.131166 %74 %
137Number of Facebook Accounts   Authority-0.133129 %78 %
138Has Email   Trust-0.131143 %71 %
139Meta Description Tag Has Entities   Relevancy-0.131158 %81 %
140Number of US Phone Numbers   Trust-0.136671242 %81 %
141Uses JSON-LD name   Other-0.131152 %76 %
142Number of Social Accounts   Authority-0.1310243 %78 %
143Title Length   Size-0.131225082 %77 %
144Headings Has Question   Other-0.131136 %77 %
145Inline JavaScript Kilobytes   Size-0.13101912080 %72 %
146Exact Matches in Top 30KB   Relevancy-0.1324217 %78 %
147Has OpenGraph Type   Relevancy-0.131161 %70 %
148Search Result URL Length   Size-0.13936398 %60 %
149Number of Nofollow Links   Authority-0.1346525 %77 %
150Has US Phone Number   Trust-0.131142 %70 %
151Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
152Number of H4 Tags   Size-0.1320437 %80 %
153Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
154Title Word Count   Size-0.1318882 %76 %
155Is Store Page   Other-0.131146 %68 %
156Variations in TITLE Attributes   Relevancy-0.13268535 %80 %
157Exact Matches in Sentences   Relevancy-0.1342320 %83 %
158Is Purchase Page   Other-0.121147 %65 %
159Variations making whole A Tags   Relevancy-0.1268128 %76 %
160Variations in the last 100 words   Relevancy-0.12149344 %80 %
161Variations in Strong Tags   Relevancy-0.1262224 %79 %
162Has Contact Page   Trust-0.121163 %70 %
163Has OpenGraph Image   Relevancy-0.121154 %68 %
164Variations in Meta Twitter Description   Relevancy-0.1223123 %72 %
165Variations in I Tags   Relevancy-0.12108322 %79 %
166Has Meta Twitter Card   Authority-0.121152 %65 %
167Has Schema Markup   Relevancy-0.121163 %73 %
168Number of Questions In H3 Tags   Size-0.125117 %75 %
169Has Terms of Service   Trust-0.121141 %67 %
170Uses Schema name   Other-0.121160 %70 %
171Uses JSON-LD url   Other-0.121147 %75 %
172Variations making whole H1 Tags   Relevancy-0.12118 %78 %
173Exact Matches in Title Tag   Relevancy-0.122116 %81 %
174Variations Making Whole Span Tags   Relevancy-0.127118 %81 %
175Uses JSON-LD CollectionPage   Other-0.12114 %32 %
176Uses Schema url   Other-0.121155 %67 %
177Is Pagination Page   Other-0.121119 %64 %
178Has Google Verify   Technology-0.121122 %67 %
179Uses Schema sku   Other-0.12115 %27 %
180Uses Schema collectionpage   Other-0.12114 %32 %
181Number of Questions In H2 Tags   Size-0.124123 %75 %
182Variations in H4-H6 Tags   Relevancy-0.1216117 %79 %
183Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
184Number of Twitter Accounts   Authority-0.123125 %71 %
185Variations in Button Tags   Relevancy-0.12256539 %79 %
186Percentage of NoFollow Links   Authority-0.1215222 %75 %
187Uses JSON-LD ListItem   Other-0.121134 %71 %
188Has Entities in H4 Tags   Relevancy-0.121123 %78 %
189Uses JSON-LD ItemList   Other-0.12114 %44 %
190Uses Schema itemlist   Other-0.12114 %45 %
191Uses Schema organization   Other-0.111135 %66 %
192Uses JSON-LD sku   Other-0.11114 %27 %
193Is Article Page   Other-0.111142 %66 %
194Exact Matches in H1 Tags   Relevancy-0.112112 %80 %
195Uses JSON-LD description   Other-0.111141 %70 %
196Has Meta Twitter Description   Authority-0.111130 %58 %
197Has Apple Touch Icon   Technology-0.111151 %73 %
198Has Meta Twitter Title   Authority-0.111131 %57 %
199Is Category Page   Other-0.111115 %67 %
200Number of NoFollow External Links   Authority-0.1140317 %75 %