Measures 146721 SEO Factors

144999 Built-In SEO Factors

135859 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-0.22134533383 %79 %
2Entities in Title Tag   Relevancy-0.217369 %94 %
3Number of Distinct Entities Used   Diversity-0.211063079 %95 %
4Load Time Milliseconds   Performance-0.2132075148284 %91 %
5Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
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-0.2129778 %88 %
9Search Result Domain is .com   Other-0.2115 %73 %
10Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
11Entities in the HTML Tag   Relevancy-0.274615475 %95 %
12Entities in Sentences   Relevancy-0.266915072 %95 %
13Entities in H1 Tags-0.196257 %91 %
14Number of Referring Domains   Authority-0.19170812451 %69 %
15Variations in H1-H6 Tags   Relevancy-0.19195764 %87 %
16Variations in H1, H2, and H3 Tags   Relevancy-0.19179663 %86 %
17Variations in Div Tags   Relevancy-0.184488813172 %91 %
18Variations in Body Tags   Relevancy-0.1816618031377 %89 %
19Variations in H1 and H2 Tags   Relevancy-0.1862460 %86 %
20Entities in H2 Tags-0.1831754 %92 %
21Number of Backlinks   Authority-0.18124727605751 %70 %
22Variations in P Tags   Relevancy-0.18300804865 %89 %
23Variations in HTML Tags   Relevancy-0.1816618030876 %90 %
24Number of Factors Used   Diversity-0.1837517998 %89 %
25Number of Do Follow Backlinks   Authority-0.18122239532547 %69 %
26Variations in Sentences   Relevancy-0.1875843770 %89 %
27Variations in LI Tags   Relevancy-0.18524205264 %88 %
28Variations in Search Result Document File Name   Relevancy-0.176143 %80 %
29Term Frequency   Relevancy-0.175376 %88 %
30Variations in Search Result Link Text   Relevancy-0.173279 %82 %
31Variations in Search Result Display URL   Relevancy-0.173279 %82 %
32Entities in H3 Tags-0.1743846 %92 %
33Variations in the Title Tag   Relevancy-0.1711263 %86 %
34Variation Count in Top 30KB   Relevancy-0.1739482064 %85 %
35Variations in A Tags   Relevancy-0.1766172564 %86 %
36Unabridged Word Count   Size-0.1723497186384 %88 %
37LSI Words in Sentences   Relevancy-0.17370377465 %95 %
38Leading Variations in H1-H6 Tags   Relevancy-0.1721244 %87 %
39Word Count   Size-0.176250146584 %87 %
40Clean Text Kilobytes   Size-0.171381376 %88 %
41Variations in Search Result URL Path   Relevancy-0.177145 %81 %
42Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %86 %
43Number of HTML Tags   Size-0.173693108284 %87 %
44Number of Images   Size-0.173063276 %88 %
45Clean Keyword Density in the HTML Tag   Relevancy-0.17165368 %80 %
46Number of No Follow Backlinks   Authority-0.172706172639 %67 %
47Variations in H1 Tags   Relevancy-0.178153 %86 %
48Entities in Meta Description Tag   Relevancy-0.178359 %90 %
49Has Entities in H1 Tags   Relevancy-0.161158 %87 %
50Number of Includes   Technology-0.16552780 %80 %
51Search Result Number of Dirs in Path   Other-0.164273 %76 %
52Number of Images with ALT Text   Size-0.162792272 %86 %
53Variations in H2 Tags   Relevancy-0.1654346 %84 %
54Variations in First 100 Words   Relevancy-0.16151662 %84 %
55Number of P Tags   Size-0.161353975 %88 %
56Number of Heading Tags   Size-0.16672375 %86 %
57Variations in the Canonical URL   Relevancy-0.1641247 %83 %
58Variations in Meta Description   Relevancy-0.1640253 %83 %
59Title Tag Has Entities   Relevancy-0.161169 %87 %
60Variations in A Tag HREF Attributes   Relevancy-0.1629773958 %90 %
61Variations in ALT Attributes   Relevancy-0.16417744 %84 %
62LSI Words in Title Tag   Relevancy-0.1616667 %94 %
63Variations in Distinct A Tag HREF Attributes   Relevancy-0.1619842458 %90 %
64Variation Density in Top 30KB   Relevancy-0.16295259 %82 %
65Number of HTTPS Links   Authority-0.1641914880 %86 %
66Number of DoFollow Links   Authority-0.1640914580 %86 %
67Number of Links   Authority-0.1642214980 %86 %
68Exact Matches in the HTML Tag   Relevancy-0.168261129 %83 %
69Variations in Main Tags   Relevancy-0.16145746436 %85 %
70Percentage of DoFollow Links   Authority-0.16988280 %87 %
71TF/IDF   Relevancy-0.161156 %85 %
72Number of Internal Links   Authority-0.1640513480 %86 %
73Leading Variations in Title Tag   Relevancy-0.161130 %80 %
74Number of Facebook Pages   Authority-0.1616259 %81 %
75LSI Words in H1 Tags   Relevancy-0.1518456 %93 %
76Variations in Span Tags   Relevancy-0.15834950 %88 %
77Variations in OpenGraph Description   Relevancy-0.154249 %80 %
78Number of External Links   Authority-0.151061577 %85 %
79Number of H1 Tags   Size-0.1511270 %87 %
80Number of Forms   Technology-0.1519254 %81 %
81Percentage of DoFollow Internal Links   Authority-0.15907279 %86 %
82Number of DoFollow External Links   Authority-0.15661476 %84 %
83Variations in OpenGraph Title   Relevancy-0.157153 %78 %
84Variations in Absolute URLs   Relevancy-0.1595175659 %88 %
85Variations in Search Result URL   Relevancy-0.1517254 %76 %
86Number of CSS Includes   Technology-0.15261073 %78 %
87Variations in Script Tags   Relevancy-0.158975612461 %84 %
88Number of HTML Comments   Size-0.157075572 %85 %
89Number of Images without ALT Text   Size-0.15651158 %86 %
90Has Entities in H2 Tags   Relevancy-0.151155 %85 %
91Number of H2 Tags   Size-0.1521768 %86 %
92Number of Sentences   Size-0.1569713182 %83 %
93Has Form   Technology-0.151153 %77 %
94Leading Variations in H1 Tags   Relevancy-0.151126 %80 %
95Has JSON-LD Schema Markup   Relevancy-0.151154 %77 %
96Has Meta Charset   Technology-0.151174 %83 %
97Average Words Per Sentence   Size-0.152293178 %81 %
98Flesch Kincaid Reading Grade Level   Other-0.146295 %86 %
99Number of H3 Tags   Size-0.1433961 %84 %
100Number of JavaScript Includes   Technology-0.14441881 %80 %
101LSI Words in H2 Tags   Relevancy-0.14922155 %92 %
102Exact Matches in H1-H6 Tags   Relevancy-0.1413118 %82 %
103LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
104Variations in Nav Tags   Relevancy-0.1483872845 %84 %
105Search Result Domain Length   Size-0.14271783 %79 %
106Search Result Host Length   Size-0.14271783 %79 %
107Entities in H4 Tags-0.1419222 %88 %
108Variations in H3 Tags   Relevancy-0.14118335 %83 %
109Variations in Section Tags   Relevancy-0.1410471736 %83 %
110Number Of JSON-LD Types   Relevancy-0.141501457 %82 %
111Inline CSS Kilobytes   Size-0.141916165 %81 %
112Number of Absolute URLs   Authority-0.1499029083 %79 %
113Page Size Kilobytes   Size-0.14110532283 %76 %
114Percentage of DoFollow External Links   Authority-0.14301174 %79 %
115Has Entities in H3 Tags   Relevancy-0.141146 %83 %
116Has Meta Viewport   Technology-0.141181 %82 %
117Number of Questions   Size-0.14811267 %78 %
118Search Result Uses HTTPS   Other-0.141183 %84 %
119Variations making whole H1-H6 Tags   Relevancy-0.142116 %77 %
120Variations in Footer Tags   Relevancy-0.1460121135 %83 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %78 %
122Has Canonical URL   Authority-0.141171 %79 %
123Number of Questions In Headings   Size-0.148236 %83 %
124Number of Prices   Size-0.1329627670 %81 %
125Leading Variations in H2 Tags   Relevancy-0.138121 %82 %
126Number of Social Pages   Authority-0.1330465 %81 %
127Number of Instagram Pages   Authority-0.1312245 %78 %
128Number of LinkedIn Pages   Authority-0.137133 %76 %
129Is Home Page   Other-0.131120 %45 %
130Number of Email Addresses   Trust-0.13280544 %79 %
131LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
132Word Count in Meta Description   Size-0.13381967 %78 %
133Has FavIcon   Technology-0.131175 %77 %
134Has Privacy Policy   Trust-0.131160 %74 %
135Meta Description Length   Size-0.1324211867 %79 %
136Has Email   Trust-0.131144 %71 %
137Search Result URL Length   Size-0.13936398 %62 %
138Uses JSON-LD name   Other-0.131153 %76 %
139Number of Nofollow Links   Authority-0.1346525 %77 %
140Meta Description Tag Has Entities   Relevancy-0.131159 %80 %
141Has OpenGraph Type   Relevancy-0.131162 %70 %
142Number of US Phone Numbers   Trust-0.136671243 %80 %
143Has Meta Description   Relevancy-0.131166 %74 %
144Number of Facebook Accounts   Authority-0.133129 %78 %
145Exact Matches in Top 30KB   Relevancy-0.1324217 %78 %
146Inline JavaScript Kilobytes   Size-0.1363412180 %72 %
147Headings Has Question   Other-0.131136 %77 %
148Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
149Has Meta Twitter Card   Authority-0.131152 %65 %
150Exact Matches in Sentences   Relevancy-0.1342220 %83 %
151Title Length   Size-0.131225082 %78 %
152Variations in the last 100 words   Relevancy-0.13149345 %80 %
153Number of Social Accounts   Authority-0.1310243 %78 %
154Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
155Is Store Page   Other-0.131146 %68 %
156Number of H4 Tags   Size-0.1320437 %81 %
157Variations in Meta Twitter Description   Relevancy-0.1323123 %73 %
158Is Purchase Page   Other-0.131147 %66 %
159Has US Phone Number   Trust-0.131142 %71 %
160Has OpenGraph Image   Relevancy-0.131154 %68 %
161Title Word Count   Size-0.1318881 %77 %
162Variations making whole A Tags   Relevancy-0.1268129 %77 %
163Variations in I Tags   Relevancy-0.12108322 %79 %
164Variations in TITLE Attributes   Relevancy-0.12268535 %80 %
165Has Contact Page   Trust-0.121163 %70 %
166Number of Questions In H3 Tags   Size-0.125117 %76 %
167Variations in Strong Tags   Relevancy-0.1262225 %79 %
168Has Schema Markup   Relevancy-0.121164 %74 %
169Has Terms of Service   Trust-0.121141 %67 %
170Uses Schema name   Other-0.121161 %71 %
171Uses JSON-LD CollectionPage   Other-0.12114 %32 %
172Uses JSON-LD url   Other-0.121147 %75 %
173Variations making whole H1 Tags   Relevancy-0.12118 %78 %
174Is Pagination Page   Other-0.121119 %65 %
175Exact Matches in Title Tag   Relevancy-0.122116 %80 %
176Uses Schema collectionpage   Other-0.12115 %32 %
177Variations in H4-H6 Tags   Relevancy-0.1216117 %80 %
178Variations Making Whole Span Tags   Relevancy-0.127119 %80 %
179Uses Schema url   Other-0.121156 %68 %
180Percentage of NoFollow Links   Authority-0.1215222 %74 %
181Has Entities in H4 Tags   Relevancy-0.121123 %78 %
182Has Google Verify   Technology-0.121122 %66 %
183Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
184Number of Twitter Accounts   Authority-0.122125 %71 %
185Is Article Page   Other-0.121142 %67 %
186Uses JSON-LD ListItem   Other-0.121134 %71 %
187Number of Questions In H2 Tags   Size-0.124123 %75 %
188Number of NoFollow External Links   Authority-0.1240317 %75 %
189Has Meta Twitter Description   Authority-0.121130 %60 %
190Is Category Page   Other-0.121115 %66 %
191Variations in ID Attributes   Relevancy-0.12487212 %81 %
192Uses JSON-LD ItemList   Other-0.12114 %43 %
193Uses JSON-LD description   Other-0.121141 %70 %
194Uses Schema organization   Other-0.111135 %67 %
195Variations in Button Tags   Relevancy-0.11256549 %80 %
196Uses Schema sku   Other-0.11115 %27 %
197Uses Schema itemlist   Other-0.11114 %44 %
198Has Meta Twitter Title   Authority-0.111132 %59 %
199Is OpenGraph Type Article   Technology-0.111132 %59 %
200Exact Matches in H1 Tags   Relevancy-0.111112 %80 %