Measures 146766 SEO Factors

145044 Built-In SEO Factors

135904 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-0.23134533483 %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 %
8Search Result Domain is .com   Other-0.21114 %73 %
9Number of Unique Variations Used   Diversity-0.2129777 %87 %
10Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
11Entities in the HTML Tag   Relevancy-0.286615275 %95 %
12Entities in Sentences   Relevancy-0.274514971 %95 %
13Variations in H1-H6 Tags   Relevancy-0.19195763 %87 %
14Number of Referring Domains   Authority-0.19274412250 %70 %
15Variations in H1, H2, and H3 Tags   Relevancy-0.19179662 %86 %
16Entities in H1 Tags-0.196256 %91 %
17Number of Backlinks   Authority-0.19253638614750 %71 %
18Variations in Body Tags   Relevancy-0.1916618029376 %89 %
19Variations in Div Tags   Relevancy-0.184488812572 %91 %
20Variations in H1 and H2 Tags   Relevancy-0.1862460 %86 %
21Variations in P Tags   Relevancy-0.18300804464 %89 %
22Entities in H2 Tags-0.1833753 %92 %
23Number of Do Follow Backlinks   Authority-0.18249326543546 %70 %
24Variations in HTML Tags   Relevancy-0.1816618028975 %90 %
25Number of Factors Used   Diversity-0.1837517798 %88 %
26Variations in LI Tags   Relevancy-0.18524204763 %88 %
27Variations in Sentences   Relevancy-0.1775843669 %89 %
28Term Frequency   Relevancy-0.175375 %88 %
29Variations in Search Result Document File Name   Relevancy-0.176142 %79 %
30Entities in H3 Tags-0.1743745 %92 %
31LSI Words in Sentences   Relevancy-0.17370377866 %94 %
32Variation Count in Top 30KB   Relevancy-0.1739482063 %84 %
33Variations in Search Result Link Text   Relevancy-0.173278 %81 %
34Variations in Search Result Display URL   Relevancy-0.173278 %81 %
35Leading Variations in H1-H6 Tags   Relevancy-0.1721243 %86 %
36Unabridged Word Count   Size-0.1723497186384 %88 %
37Variations in A Tags   Relevancy-0.1766172463 %86 %
38Word Count   Size-0.176250145684 %88 %
39Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %86 %
40Variations in the Title Tag   Relevancy-0.1711262 %86 %
41Clean Text Kilobytes   Size-0.171381376 %88 %
42Number of HTML Tags   Size-0.173693107884 %87 %
43Number of Images   Size-0.173063276 %88 %
44Clean Keyword Density in the HTML Tag   Relevancy-0.17165367 %80 %
45Number of No Follow Backlinks   Authority-0.172706170138 %68 %
46Variations in H1 Tags   Relevancy-0.178152 %85 %
47Variations in Search Result URL Path   Relevancy-0.177144 %81 %
48Entities in Meta Description Tag   Relevancy-0.168359 %90 %
49Number of Images with ALT Text   Size-0.162792271 %86 %
50Number of Includes   Technology-0.16722780 %79 %
51Variations in H2 Tags   Relevancy-0.1654345 %84 %
52Number of P Tags   Size-0.161353975 %87 %
53Number of Heading Tags   Size-0.16672275 %85 %
54Search Result Number of Dirs in Path   Other-0.164273 %77 %
55Has Entities in H1 Tags   Relevancy-0.161157 %87 %
56Variations in First 100 Words   Relevancy-0.16151561 %84 %
57Number of HTTPS Links   Authority-0.1653614880 %86 %
58Variations in Meta Description   Relevancy-0.1640252 %83 %
59LSI Words in Title Tag   Relevancy-0.1616667 %93 %
60Number of Links   Authority-0.1653714980 %86 %
61Number of DoFollow Links   Authority-0.1652314580 %86 %
62Title Tag Has Entities   Relevancy-0.161169 %87 %
63Variations in the Canonical URL   Relevancy-0.1641246 %82 %
64Variations in ALT Attributes   Relevancy-0.16417743 %83 %
65Variation Density in Top 30KB   Relevancy-0.16295258 %81 %
66Number of Internal Links   Authority-0.1652613479 %86 %
67Variations in Main Tags   Relevancy-0.16145746136 %85 %
68Percentage of DoFollow Links   Authority-0.16988280 %88 %
69Exact Matches in the HTML Tag   Relevancy-0.168261129 %83 %
70LSI Words in H1 Tags   Relevancy-0.1618557 %92 %
71Number of External Links   Authority-0.151061676 %85 %
72Variations in Span Tags   Relevancy-0.15834949 %87 %
73Variations in A Tag HREF Attributes   Relevancy-0.1529773857 %89 %
74Number of DoFollow External Links   Authority-0.15661475 %85 %
75Variations in Distinct A Tag HREF Attributes   Relevancy-0.1519842357 %89 %
76Leading Variations in Title Tag   Relevancy-0.151129 %81 %
77TF/IDF   Relevancy-0.151155 %85 %
78Number of Facebook Pages   Authority-0.1516259 %81 %
79Number of H1 Tags   Size-0.1511270 %87 %
80Percentage of DoFollow Internal Links   Authority-0.15907279 %85 %
81Number of Forms   Technology-0.1519254 %82 %
82Number of CSS Includes   Technology-0.15321073 %78 %
83Variations in OpenGraph Description   Relevancy-0.154248 %79 %
84Variations in OpenGraph Title   Relevancy-0.157152 %78 %
85Number of HTML Comments   Size-0.157075572 %84 %
86Variations in Absolute URLs   Relevancy-0.1595175458 %87 %
87Variations in Script Tags   Relevancy-0.158975611461 %84 %
88Variations in Search Result URL   Relevancy-0.1517252 %76 %
89Number of H2 Tags   Size-0.1521768 %86 %
90Number of Images without ALT Text   Size-0.15651158 %85 %
91Has Entities in H2 Tags   Relevancy-0.151154 %86 %
92Leading Variations in H1 Tags   Relevancy-0.151126 %80 %
93Number of Sentences   Size-0.1569713082 %83 %
94Has Form   Technology-0.151153 %77 %
95Average Words Per Sentence   Size-0.153183177 %82 %
96Has JSON-LD Schema Markup   Relevancy-0.151154 %76 %
97Number of H3 Tags   Size-0.1533960 %84 %
98Flesch Kincaid Reading Grade Level   Other-0.146295 %87 %
99Has Meta Charset   Technology-0.141174 %83 %
100LSI Words in H2 Tags   Relevancy-0.14922155 %92 %
101LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
102Number of JavaScript Includes   Technology-0.14441881 %80 %
103Variations in Nav Tags   Relevancy-0.1483872745 %83 %
104Variations in H3 Tags   Relevancy-0.14118334 %83 %
105Search Result Domain Length   Size-0.14271783 %78 %
106Search Result Host Length   Size-0.14271783 %78 %
107Exact Matches in H1-H6 Tags   Relevancy-0.1413118 %82 %
108Number of Absolute URLs   Authority-0.1499028783 %79 %
109Percentage of DoFollow External Links   Authority-0.14301174 %79 %
110Has Entities in H3 Tags   Relevancy-0.141146 %84 %
111Entities in H4 Tags-0.1419222 %88 %
112Number Of JSON-LD Types   Relevancy-0.141501456 %81 %
113Page Size Kilobytes   Size-0.14131632283 %76 %
114Variations in Section Tags   Relevancy-0.1410471735 %83 %
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 %78 %
119Number of Questions In Headings   Size-0.148236 %82 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
121Variations in Footer Tags   Relevancy-0.1460121034 %82 %
122Leading Variations in H2 Tags   Relevancy-0.148121 %81 %
123LSI Words in H3 Tags   Relevancy-0.131272248 %89 %
124Number of Prices   Size-0.1329627669 %80 %
125Has Canonical URL   Authority-0.131171 %79 %
126Number of Instagram Pages   Authority-0.1312245 %78 %
127Number of Questions   Size-0.13811167 %78 %
128Number of Social Pages   Authority-0.1330465 %81 %
129Number of LinkedIn Pages   Authority-0.137133 %76 %
130Word Count in Meta Description   Size-0.13381967 %78 %
131Has FavIcon   Technology-0.131175 %77 %
132Meta Description Length   Size-0.1324211867 %79 %
133Number of Email Addresses   Trust-0.13280543 %80 %
134Is Home Page   Other-0.131120 %45 %
135Has Privacy Policy   Trust-0.131160 %74 %
136Has Meta Description   Relevancy-0.131166 %74 %
137Has Email   Trust-0.131143 %71 %
138Uses JSON-LD name   Other-0.131153 %76 %
139Meta Description Tag Has Entities   Relevancy-0.131158 %81 %
140Number of US Phone Numbers   Trust-0.136671243 %81 %
141Number of Facebook Accounts   Authority-0.133129 %78 %
142Number of Social Accounts   Authority-0.1310243 %78 %
143Inline JavaScript Kilobytes   Size-0.13101912180 %72 %
144Headings Has Question   Other-0.131136 %76 %
145Has OpenGraph Type   Relevancy-0.131161 %70 %
146Title Length   Size-0.131225082 %77 %
147Search Result URL Length   Size-0.13936398 %61 %
148Number of Nofollow Links   Authority-0.1346525 %77 %
149Exact Matches in Top 30KB   Relevancy-0.1324217 %78 %
150Variations Making Whole LI Tags   Relevancy-0.135124 %76 %
151Has US Phone Number   Trust-0.131142 %70 %
152Is Store Page   Other-0.131146 %68 %
153Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
154Number of H4 Tags   Size-0.1320437 %80 %
155Title Word Count   Size-0.1318882 %76 %
156Variations making whole A Tags   Relevancy-0.1268128 %76 %
157Is Purchase Page   Other-0.121147 %66 %
158Variations in TITLE Attributes   Relevancy-0.12268535 %80 %
159Exact Matches in Sentences   Relevancy-0.1242320 %83 %
160Variations in Strong Tags   Relevancy-0.1262224 %79 %
161Variations in the last 100 words   Relevancy-0.12149344 %80 %
162Has Contact Page   Trust-0.121163 %70 %
163Has OpenGraph Image   Relevancy-0.121154 %68 %
164Has Meta Twitter Card   Authority-0.121152 %65 %
165Variations in Meta Twitter Description   Relevancy-0.1223123 %72 %
166Number of Questions In H3 Tags   Size-0.125117 %75 %
167Variations in I Tags   Relevancy-0.12108322 %79 %
168Has Schema Markup   Relevancy-0.121164 %74 %
169Uses Schema name   Other-0.121160 %70 %
170Has Terms of Service   Trust-0.121141 %67 %
171Uses JSON-LD url   Other-0.121147 %75 %
172Variations making whole H1 Tags   Relevancy-0.12118 %78 %
173Uses JSON-LD CollectionPage   Other-0.12114 %32 %
174Variations Making Whole Span Tags   Relevancy-0.127118 %81 %
175Exact Matches in Title Tag   Relevancy-0.122116 %80 %
176Uses Schema url   Other-0.121155 %67 %
177Is Pagination Page   Other-0.121119 %64 %
178Uses Schema collectionpage   Other-0.12114 %32 %
179Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
180Has Google Verify   Technology-0.121122 %67 %
181Variations in H4-H6 Tags   Relevancy-0.1216117 %79 %
182Number of Questions In H2 Tags   Size-0.124123 %74 %
183Number of Twitter Accounts   Authority-0.123125 %71 %
184Uses Schema sku   Other-0.12115 %27 %
185Variations in Button Tags   Relevancy-0.12256549 %80 %
186Uses JSON-LD ItemList   Other-0.12114 %44 %
187Percentage of NoFollow Links   Authority-0.1215222 %74 %
188Uses JSON-LD ListItem   Other-0.121134 %70 %
189Has Entities in H4 Tags   Relevancy-0.121122 %78 %
190Uses Schema itemlist   Other-0.12114 %45 %
191Uses Schema organization   Other-0.111135 %66 %
192Is Article Page   Other-0.111142 %66 %
193Uses JSON-LD description   Other-0.111141 %70 %
194Has Apple Touch Icon   Technology-0.111151 %73 %
195Is Category Page   Other-0.111115 %66 %
196Uses JSON-LD sku   Other-0.11114 %27 %
197Number of NoFollow External Links   Authority-0.1140317 %75 %
198Has Meta Twitter Description   Authority-0.111130 %59 %
199Exact Matches in H1 Tags   Relevancy-0.112112 %80 %
200Has Meta Twitter Title   Authority-0.111131 %58 %