Measures 146755 SEO Factors

145033 Built-In SEO Factors

135893 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-0.23134533683 %80 %
2Number of Distinct Entities Used   Diversity-0.211063079 %95 %
3Entities in Title Tag   Relevancy-0.217369 %94 %
4Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
5Load Time Milliseconds   Performance-0.2132075147684 %91 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
7Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
8Number of Unique Variations Used   Diversity-0.2129777 %88 %
9Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
10Search Result Domain is .com   Other-0.2114 %73 %
11Entities in the HTML Tag   Relevancy-0.286615375 %95 %
12Entities in Sentences   Relevancy-0.274515072 %95 %
13Variations in H1-H6 Tags   Relevancy-0.19195763 %87 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.19179662 %86 %
15Entities in H1 Tags-0.196257 %91 %
16Number of Referring Domains   Authority-0.19274412051 %70 %
17Variations in Div Tags   Relevancy-0.194488812772 %91 %
18Variations in Body Tags   Relevancy-0.1916618030076 %89 %
19Variations in H1 and H2 Tags   Relevancy-0.1962460 %86 %
20Number of Backlinks   Authority-0.18124727564651 %71 %
21Entities in H2 Tags-0.1833754 %92 %
22Variations in P Tags   Relevancy-0.18300804665 %89 %
23Variations in HTML Tags   Relevancy-0.1816618029675 %90 %
24Number of Do Follow Backlinks   Authority-0.18122239495246 %70 %
25Number of Factors Used   Diversity-0.1837517898 %89 %
26Variations in Sentences   Relevancy-0.1875843770 %89 %
27Variations in LI Tags   Relevancy-0.18524204963 %88 %
28Term Frequency   Relevancy-0.175375 %88 %
29Entities in H3 Tags-0.1743845 %92 %
30LSI Words in Sentences   Relevancy-0.17370378766 %94 %
31Variations in Search Result Document File Name   Relevancy-0.176142 %80 %
32Unabridged Word Count   Size-0.1723497186584 %88 %
33Variation Count in Top 30KB   Relevancy-0.1739482064 %84 %
34Variations in Search Result Link Text   Relevancy-0.173279 %82 %
35Variations in Search Result Display URL   Relevancy-0.173279 %82 %
36Word Count   Size-0.176250146384 %88 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1721244 %87 %
38Variations in the Title Tag   Relevancy-0.1711263 %85 %
39Variations in A Tags   Relevancy-0.1766172563 %86 %
40Clean Text Kilobytes   Size-0.171381376 %88 %
41Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %86 %
42Number of HTML Tags   Size-0.173693108184 %88 %
43Number of Images   Size-0.173063276 %88 %
44Clean Keyword Density in the HTML Tag   Relevancy-0.17165367 %80 %
45Variations in H1 Tags   Relevancy-0.178153 %85 %
46Entities in Meta Description Tag   Relevancy-0.178359 %90 %
47Number of No Follow Backlinks   Authority-0.172706167839 %68 %
48Variations in Search Result URL Path   Relevancy-0.177144 %81 %
49Number of Images with ALT Text   Size-0.162792272 %86 %
50Variations in H2 Tags   Relevancy-0.1654345 %84 %
51Number of Includes   Technology-0.16722781 %79 %
52Number of P Tags   Size-0.161353975 %88 %
53Has Entities in H1 Tags   Relevancy-0.161158 %87 %
54Number of Heading Tags   Size-0.16672375 %86 %
55Search Result Number of Dirs in Path   Other-0.164273 %77 %
56Variations in First 100 Words   Relevancy-0.16151562 %84 %
57LSI Words in Title Tag   Relevancy-0.1616668 %93 %
58Variations in Meta Description   Relevancy-0.1640253 %83 %
59Number of HTTPS Links   Authority-0.1653614880 %86 %
60Title Tag Has Entities   Relevancy-0.161169 %87 %
61Variations in the Canonical URL   Relevancy-0.1641246 %83 %
62Number of Links   Authority-0.1653715080 %86 %
63Number of DoFollow Links   Authority-0.1652314580 %86 %
64Exact Matches in the HTML Tag   Relevancy-0.168261130 %83 %
65Variations in ALT Attributes   Relevancy-0.16417743 %83 %
66Variation Density in Top 30KB   Relevancy-0.16295258 %81 %
67LSI Words in H1 Tags   Relevancy-0.1618557 %93 %
68Number of Internal Links   Authority-0.1652613580 %86 %
69Variations in Main Tags   Relevancy-0.16145746236 %85 %
70Variations in Span Tags   Relevancy-0.16834949 %88 %
71Leading Variations in Title Tag   Relevancy-0.161130 %81 %
72Variations in A Tag HREF Attributes   Relevancy-0.1629773857 %89 %
73Variations in Distinct A Tag HREF Attributes   Relevancy-0.1619842357 %89 %
74Number of External Links   Authority-0.151061577 %85 %
75TF/IDF   Relevancy-0.151156 %85 %
76Percentage of DoFollow Links   Authority-0.15988280 %88 %
77Number of DoFollow External Links   Authority-0.15661476 %85 %
78Number of Facebook Pages   Authority-0.1516259 %81 %
79Number of H1 Tags   Size-0.1511270 %87 %
80Number of Forms   Technology-0.1519254 %81 %
81Variations in OpenGraph Description   Relevancy-0.154248 %79 %
82Percentage of DoFollow Internal Links   Authority-0.15907279 %86 %
83Number of CSS Includes   Technology-0.15321073 %78 %
84Variations in OpenGraph Title   Relevancy-0.157153 %78 %
85Number of HTML Comments   Size-0.157075572 %85 %
86Variations in Script Tags   Relevancy-0.158975611761 %84 %
87Variations in Absolute URLs   Relevancy-0.1595175558 %87 %
88Variations in Search Result URL   Relevancy-0.1517253 %77 %
89Number of H2 Tags   Size-0.1521768 %86 %
90Has Entities in H2 Tags   Relevancy-0.151154 %86 %
91Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
92Number of Images without ALT Text   Size-0.15651158 %86 %
93Number of Sentences   Size-0.1569713182 %83 %
94Has Form   Technology-0.151153 %77 %
95Has JSON-LD Schema Markup   Relevancy-0.151154 %77 %
96Average Words Per Sentence   Size-0.153183178 %81 %
97Number of H3 Tags   Size-0.1533961 %84 %
98Has Meta Charset   Technology-0.151174 %83 %
99LSI Words in H2 Tags   Relevancy-0.14922156 %92 %
100Flesch Kincaid Reading Grade Level   Other-0.146295 %87 %
101LSI Words in Meta Description Tag   Relevancy-0.14361056 %91 %
102Number of JavaScript Includes   Technology-0.14441881 %80 %
103Variations in Nav Tags   Relevancy-0.1483872845 %83 %
104Exact Matches in H1-H6 Tags   Relevancy-0.1413119 %82 %
105Variations in H3 Tags   Relevancy-0.14118334 %83 %
106Search Result Domain Length   Size-0.14271783 %79 %
107Search Result Host Length   Size-0.14271783 %78 %
108Entities in H4 Tags-0.1419222 %88 %
109Has Entities in H3 Tags   Relevancy-0.141146 %84 %
110Number of Absolute URLs   Authority-0.1499028983 %79 %
111Number Of JSON-LD Types   Relevancy-0.141501457 %82 %
112Percentage of DoFollow External Links   Authority-0.14301174 %79 %
113Inline CSS Kilobytes   Size-0.141916165 %81 %
114Page Size Kilobytes   Size-0.14131632383 %76 %
115Variations in Section Tags   Relevancy-0.1410471736 %83 %
116Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
117Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
118Number of Questions In Headings   Size-0.148236 %83 %
119Has Meta Viewport   Technology-0.141181 %82 %
120Search Result Uses HTTPS   Other-0.141183 %84 %
121Variations in Footer Tags   Relevancy-0.1460121034 %83 %
122LSI Words in H3 Tags   Relevancy-0.141272249 %90 %
123Number of Questions   Size-0.14811268 %78 %
124Leading Variations in H2 Tags   Relevancy-0.148121 %82 %
125Has Canonical URL   Authority-0.131171 %79 %
126Number of Prices   Size-0.1329627570 %80 %
127Number of Social Pages   Authority-0.1330465 %82 %
128Number of Instagram Pages   Authority-0.1312246 %79 %
129Number of LinkedIn Pages   Authority-0.137133 %76 %
130Word Count in Meta Description   Size-0.13381967 %77 %
131Has FavIcon   Technology-0.131175 %77 %
132Meta Description Length   Size-0.1324211867 %78 %
133Number of Email Addresses   Trust-0.13280543 %80 %
134Is Home Page   Other-0.131120 %45 %
135Has Privacy Policy   Trust-0.131160 %74 %
136Uses JSON-LD name   Other-0.131153 %76 %
137Has Email   Trust-0.131144 %71 %
138Has Meta Description   Relevancy-0.131166 %74 %
139Meta Description Tag Has Entities   Relevancy-0.131159 %81 %
140Headings Has Question   Other-0.131136 %77 %
141Number of US Phone Numbers   Trust-0.136671243 %80 %
142Number of Facebook Accounts   Authority-0.133129 %79 %
143Exact Matches in Top 30KB   Relevancy-0.1324217 %78 %
144Number of Social Accounts   Authority-0.1310243 %79 %
145Inline JavaScript Kilobytes   Size-0.13101912180 %72 %
146Title Length   Size-0.131225082 %77 %
147Search Result URL Length   Size-0.13936298 %61 %
148Number of Nofollow Links   Authority-0.1346525 %77 %
149Exact Matches in Sentences   Relevancy-0.1342320 %83 %
150Has OpenGraph Type   Relevancy-0.131162 %71 %
151Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
152Variations in Meta Twitter Content   Relevancy-0.132125 %68 %
153Is Store Page   Other-0.131146 %68 %
154Number of H4 Tags   Size-0.1320437 %81 %
155Has US Phone Number   Trust-0.131142 %71 %
156Title Word Count   Size-0.1318882 %76 %
157Is Purchase Page   Other-0.131147 %66 %
158Variations making whole A Tags   Relevancy-0.1268128 %76 %
159Variations in TITLE Attributes   Relevancy-0.12268535 %80 %
160Has Meta Twitter Card   Authority-0.121152 %65 %
161Variations in Strong Tags   Relevancy-0.1262225 %79 %
162Has Contact Page   Trust-0.121163 %70 %
163Variations in the last 100 words   Relevancy-0.12149344 %80 %
164Variations in I Tags   Relevancy-0.12108322 %79 %
165Variations in Meta Twitter Description   Relevancy-0.1223123 %72 %
166Number of Questions In H3 Tags   Size-0.125117 %76 %
167Has OpenGraph Image   Relevancy-0.121154 %69 %
168Has Terms of Service   Trust-0.121141 %67 %
169Has Schema Markup   Relevancy-0.121164 %74 %
170Uses Schema name   Other-0.121160 %71 %
171Uses JSON-LD url   Other-0.121147 %76 %
172Variations making whole H1 Tags   Relevancy-0.12118 %79 %
173Exact Matches in Title Tag   Relevancy-0.122116 %80 %
174Variations Making Whole Span Tags   Relevancy-0.127119 %81 %
175Uses JSON-LD CollectionPage   Other-0.12114 %32 %
176Uses Schema url   Other-0.121156 %67 %
177Is Pagination Page   Other-0.121119 %64 %
178Variations in H4-H6 Tags   Relevancy-0.1216117 %80 %
179Uses Schema collectionpage   Other-0.12114 %32 %
180Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
181Has Google Verify   Technology-0.121122 %67 %
182Uses Schema sku   Other-0.12115 %27 %
183Number of Questions In H2 Tags   Size-0.124123 %75 %
184Has Entities in H4 Tags   Relevancy-0.121123 %78 %
185Number of Twitter Accounts   Authority-0.122125 %71 %
186Uses JSON-LD ItemList   Other-0.12114 %43 %
187Uses Schema itemlist   Other-0.12114 %45 %
188Variations in Button Tags   Relevancy-0.12256549 %80 %
189Percentage of NoFollow Links   Authority-0.1215222 %74 %
190Uses JSON-LD ListItem   Other-0.121134 %71 %
191Is Article Page   Other-0.111143 %67 %
192Exact Matches in H1 Tags   Relevancy-0.112113 %80 %
193Uses Schema organization   Other-0.111135 %67 %
194Has Apple Touch Icon   Technology-0.111152 %73 %
195Uses JSON-LD description   Other-0.111141 %70 %
196Has Meta Twitter Description   Authority-0.111130 %59 %
197Is Category Page   Other-0.111115 %66 %
198Uses JSON-LD sku   Other-0.11114 %27 %
199LSI Words in H4 Tags   Relevancy-0.1173728 %87 %
200Number of NoFollow External Links   Authority-0.1140317 %75 %