Measures 146743 SEO Factors

145021 Built-In SEO Factors

135881 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-0.23134533383 %79 %
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-0.2132075147284 %91 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
7Number of Top 100 Shared Factors Used   Diversity-0.21392998 %92 %
8Number of Unique Variations Used   Diversity-0.2129778 %87 %
9Search Result Domain is .com   Other-0.2114 %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-0.274514972 %95 %
13Variations in H1-H6 Tags   Relevancy-0.19195763 %87 %
14Number of Referring Domains   Authority-0.19170812251 %69 %
15Variations in H1, H2, and H3 Tags   Relevancy-0.19179662 %86 %
16Entities in H1 Tags-0.196257 %91 %
17Variations in Div Tags   Relevancy-0.194488812972 %91 %
18Variations in Body Tags   Relevancy-0.1916618030677 %89 %
19Variations in H1 and H2 Tags   Relevancy-0.1862460 %86 %
20Number of Backlinks   Authority-0.18124727585751 %70 %
21Entities in H2 Tags-0.1833754 %92 %
22Variations in P Tags   Relevancy-0.18300804765 %89 %
23Variations in HTML Tags   Relevancy-0.1816618030275 %90 %
24Number of Factors Used   Diversity-0.1837517998 %89 %
25Number of Do Follow Backlinks   Authority-0.18122239514746 %69 %
26Variations in Sentences   Relevancy-0.1875843770 %89 %
27Variations in LI Tags   Relevancy-0.18524205063 %88 %
28Term Frequency   Relevancy-0.175375 %88 %
29Variations in Search Result Document File Name   Relevancy-0.176143 %79 %
30Variations in Search Result Link Text   Relevancy-0.173279 %82 %
31Variations in Search Result Display URL   Relevancy-0.173279 %82 %
32Entities in H3 Tags-0.1743845 %92 %
33LSI Words in Sentences   Relevancy-0.17370377666 %94 %
34Variation Count in Top 30KB   Relevancy-0.1739482064 %84 %
35Variations in the Title Tag   Relevancy-0.1711263 %85 %
36Variations in A Tags   Relevancy-0.1766172564 %86 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1721244 %87 %
38Unabridged Word Count   Size-0.1723497186284 %88 %
39Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %86 %
40Word Count   Size-0.176250146184 %87 %
41Clean Text Kilobytes   Size-0.171381376 %88 %
42Number of HTML Tags   Size-0.173693108484 %87 %
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 %
46Number of No Follow Backlinks   Authority-0.172706170239 %67 %
47Variations in Search Result URL Path   Relevancy-0.177144 %81 %
48Entities in Meta Description Tag   Relevancy-0.178359 %90 %
49Number of Images with ALT Text   Size-0.162792272 %86 %
50Variations in H2 Tags   Relevancy-0.1654345 %84 %
51Has Entities in H1 Tags   Relevancy-0.161157 %87 %
52Number of Includes   Technology-0.16552781 %79 %
53Number of P Tags   Size-0.161353975 %88 %
54Search Result Number of Dirs in Path   Other-0.164273 %77 %
55Number of Heading Tags   Size-0.16672376 %85 %
56Variations in First 100 Words   Relevancy-0.16151562 %84 %
57Variations in the Canonical URL   Relevancy-0.1641247 %83 %
58Exact Matches in the HTML Tag   Relevancy-0.168261129 %83 %
59Variations in Meta Description   Relevancy-0.1640253 %83 %
60Title Tag Has Entities   Relevancy-0.161169 %87 %
61LSI Words in Title Tag   Relevancy-0.1616667 %93 %
62Variations in ALT Attributes   Relevancy-0.16417744 %84 %
63Number of HTTPS Links   Authority-0.1653614880 %86 %
64Variation Density in Top 30KB   Relevancy-0.16295258 %81 %
65Number of Links   Authority-0.1653715080 %86 %
66Number of DoFollow Links   Authority-0.1652314580 %86 %
67Variations in Main Tags   Relevancy-0.16145746336 %85 %
68Variations in A Tag HREF Attributes   Relevancy-0.1629773957 %90 %
69Variations in Distinct A Tag HREF Attributes   Relevancy-0.1619842457 %89 %
70Leading Variations in Title Tag   Relevancy-0.161130 %80 %
71Variations in Span Tags   Relevancy-0.16834949 %88 %
72Number of Internal Links   Authority-0.1652613580 %86 %
73LSI Words in H1 Tags   Relevancy-0.1618557 %92 %
74Percentage of DoFollow Links   Authority-0.15988280 %87 %
75TF/IDF   Relevancy-0.151156 %85 %
76Number of Facebook Pages   Authority-0.1516259 %81 %
77Variations in OpenGraph Description   Relevancy-0.154248 %79 %
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 %85 %
82Number of DoFollow External Links   Authority-0.15661376 %84 %
83Variations in OpenGraph Title   Relevancy-0.157153 %78 %
84Number of CSS Includes   Technology-0.15261073 %78 %
85Variations in Script Tags   Relevancy-0.158975612061 %84 %
86Variations in Search Result URL   Relevancy-0.1517253 %76 %
87Variations in Absolute URLs   Relevancy-0.1595175558 %87 %
88Number of HTML Comments   Size-0.157075572 %85 %
89Number of H2 Tags   Size-0.1521768 %86 %
90Has Entities in H2 Tags   Relevancy-0.151154 %85 %
91Leading Variations in H1 Tags   Relevancy-0.151126 %80 %
92Number of Images without ALT Text   Size-0.15651158 %85 %
93Number of Sentences   Size-0.1569713182 %83 %
94Has Form   Technology-0.151153 %76 %
95Has JSON-LD Schema Markup   Relevancy-0.151154 %77 %
96Average Words Per Sentence   Size-0.153183178 %81 %
97Has Meta Charset   Technology-0.141174 %83 %
98Exact Matches in H1-H6 Tags   Relevancy-0.1413118 %82 %
99LSI Words in H2 Tags   Relevancy-0.14922155 %92 %
100Number of H3 Tags   Size-0.1433961 %83 %
101Flesch Kincaid Reading Grade Level   Other-0.146295 %87 %
102Variations in Nav Tags   Relevancy-0.1483872845 %83 %
103LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
104Number of JavaScript Includes   Technology-0.14441881 %80 %
105Variations in H3 Tags   Relevancy-0.14118334 %83 %
106Search Result Domain Length   Size-0.14271783 %79 %
107Search Result Host Length   Size-0.14271783 %79 %
108Entities in H4 Tags-0.1419222 %88 %
109Number Of JSON-LD Types   Relevancy-0.141501457 %82 %
110Number of Absolute URLs   Authority-0.1499029083 %79 %
111Inline CSS Kilobytes   Size-0.141916165 %81 %
112Variations in Section Tags   Relevancy-0.1410471736 %83 %
113Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
114Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
115Has Entities in H3 Tags   Relevancy-0.141146 %83 %
116Page Size Kilobytes   Size-0.14131632483 %76 %
117Percentage of DoFollow External Links   Authority-0.14301174 %79 %
118Number of Questions   Size-0.14811268 %77 %
119Has Meta Viewport   Technology-0.141181 %82 %
120Variations in Footer Tags   Relevancy-0.1460121034 %83 %
121Number of Questions In Headings   Size-0.148237 %83 %
122Search Result Uses HTTPS   Other-0.141183 %84 %
123Has Canonical URL   Authority-0.131171 %79 %
124Leading Variations in H2 Tags   Relevancy-0.138121 %82 %
125Number of Prices   Size-0.1329627570 %80 %
126Number of Social Pages   Authority-0.1330465 %81 %
127LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
128Number of Instagram Pages   Authority-0.1312246 %78 %
129Number of LinkedIn Pages   Authority-0.137133 %76 %
130Is Home Page   Other-0.131120 %45 %
131Number of Email Addresses   Trust-0.13280544 %80 %
132Word Count in Meta Description   Size-0.13381967 %77 %
133Meta Description Length   Size-0.1324211867 %78 %
134Has Email   Trust-0.131144 %71 %
135Has FavIcon   Technology-0.131175 %77 %
136Exact Matches in Top 30KB   Relevancy-0.1324217 %78 %
137Uses JSON-LD name   Other-0.131153 %76 %
138Has Privacy Policy   Trust-0.131160 %74 %
139Number of US Phone Numbers   Trust-0.136671242 %80 %
140Meta Description Tag Has Entities   Relevancy-0.131159 %80 %
141Number of Nofollow Links   Authority-0.1346525 %76 %
142Has Meta Description   Relevancy-0.131166 %74 %
143Search Result URL Length   Size-0.13936298 %61 %
144Number of Facebook Accounts   Authority-0.133129 %78 %
145Exact Matches in Sentences   Relevancy-0.1342320 %83 %
146Has OpenGraph Type   Relevancy-0.131162 %71 %
147Inline JavaScript Kilobytes   Size-0.13101912180 %72 %
148Headings Has Question   Other-0.131136 %77 %
149Number of Social Accounts   Authority-0.1310243 %78 %
150Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
151Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
152Title Length   Size-0.131225082 %77 %
153Is Store Page   Other-0.131146 %68 %
154Has Meta Twitter Card   Authority-0.131153 %65 %
155Number of H4 Tags   Size-0.1320437 %81 %
156Has US Phone Number   Trust-0.131142 %71 %
157Variations making whole A Tags   Relevancy-0.1368129 %76 %
158Is Purchase Page   Other-0.121147 %66 %
159Variations in the last 100 words   Relevancy-0.12149344 %80 %
160Title Word Count   Size-0.1218882 %76 %
161Variations in Meta Twitter Description   Relevancy-0.1223123 %73 %
162Variations in I Tags   Relevancy-0.12108322 %79 %
163Variations in TITLE Attributes   Relevancy-0.12268535 %80 %
164Has OpenGraph Image   Relevancy-0.121154 %68 %
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 %66 %
170Uses Schema name   Other-0.121161 %71 %
171Variations making whole H1 Tags   Relevancy-0.12118 %78 %
172Uses JSON-LD url   Other-0.121147 %75 %
173Exact Matches in Title Tag   Relevancy-0.122116 %80 %
174Uses JSON-LD CollectionPage   Other-0.12114 %33 %
175Variations Making Whole Span Tags   Relevancy-0.127119 %81 %
176Is Pagination Page   Other-0.121119 %65 %
177Variations in H4-H6 Tags   Relevancy-0.1216117 %80 %
178Uses Schema url   Other-0.121156 %67 %
179Uses Schema collectionpage   Other-0.12114 %32 %
180Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
181Has Google Verify   Technology-0.121122 %67 %
182Number of Questions In H2 Tags   Size-0.124123 %75 %
183Percentage of NoFollow Links   Authority-0.1215222 %74 %
184Uses Schema sku   Other-0.12115 %27 %
185Has Entities in H4 Tags   Relevancy-0.121123 %78 %
186Uses JSON-LD ItemList   Other-0.12114 %44 %
187Exact Matches in H1 Tags   Relevancy-0.121112 %80 %
188Uses Schema itemlist   Other-0.12114 %45 %
189Uses JSON-LD ListItem   Other-0.121134 %71 %
190Variations in Button Tags   Relevancy-0.12256549 %80 %
191Number of Twitter Accounts   Authority-0.122125 %71 %
192Uses Schema organization   Other-0.111135 %67 %
193Is Article Page   Other-0.111142 %66 %
194Uses JSON-LD description   Other-0.111141 %70 %
195Has Meta Twitter Description   Authority-0.111130 %59 %
196Is Category Page   Other-0.111115 %66 %
197Number of NoFollow External Links   Authority-0.1140317 %75 %
198Has Meta Twitter Title   Authority-0.111132 %58 %
199Is OpenGraph Type Article   Technology-0.111132 %59 %
200Has Apple Touch Icon   Technology-0.111152 %73 %