Measures 146757 SEO Factors

145035 Built-In SEO Factors

135895 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 %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-0.2132075148284 %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 %
9Search Result Domain is .com   Other-0.21114 %73 %
10Number of Top 50 Shared Factors Used   Diversity-0.21171298 %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 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.19179662 %86 %
15Entities in H1 Tags-0.196256 %91 %
16Number of Referring Domains   Authority-0.19274412150 %70 %
17Variations in Div Tags   Relevancy-0.194488812672 %91 %
18Variations in Body Tags   Relevancy-0.1916618029576 %89 %
19Variations in H1 and H2 Tags   Relevancy-0.1862460 %86 %
20Number of Backlinks   Authority-0.18253638591651 %70 %
21Variations in P Tags   Relevancy-0.18300804564 %89 %
22Entities in H2 Tags-0.1833753 %92 %
23Variations in HTML Tags   Relevancy-0.1816618029175 %90 %
24Number of Factors Used   Diversity-0.1837517798 %89 %
25Number of Do Follow Backlinks   Authority-0.18249326521846 %70 %
26Variations in LI Tags   Relevancy-0.18524204863 %88 %
27Variations in Sentences   Relevancy-0.1875843669 %89 %
28Term Frequency   Relevancy-0.185375 %88 %
29Variations in Search Result Document File Name   Relevancy-0.176142 %80 %
30LSI Words in Sentences   Relevancy-0.17370377966 %94 %
31Entities in H3 Tags-0.1743745 %92 %
32Variation Count in Top 30KB   Relevancy-0.1739482063 %85 %
33Variations in Search Result Link Text   Relevancy-0.173278 %82 %
34Variations in Search Result Display URL   Relevancy-0.173278 %82 %
35Unabridged Word Count   Size-0.1723497186184 %88 %
36Word Count   Size-0.176250145584 %88 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1721243 %87 %
38Variations in the Title Tag   Relevancy-0.1711263 %86 %
39Variations in A Tags   Relevancy-0.1766172463 %86 %
40Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1720241 %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 %
45Variations in H1 Tags   Relevancy-0.178152 %85 %
46Variations in Search Result URL Path   Relevancy-0.177144 %81 %
47Entities in Meta Description Tag   Relevancy-0.178359 %90 %
48Number of Images with ALT Text   Size-0.172792271 %86 %
49Number of No Follow Backlinks   Authority-0.162706168738 %68 %
50Number of Includes   Technology-0.16722780 %79 %
51Number of P Tags   Size-0.161353975 %87 %
52Variations in H2 Tags   Relevancy-0.1654345 %84 %
53Has Entities in H1 Tags   Relevancy-0.161157 %87 %
54Number of Heading Tags   Size-0.16672275 %86 %
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-0.1616668 %93 %
58Number of HTTPS Links   Authority-0.1653614880 %86 %
59Title Tag Has Entities   Relevancy-0.161169 %88 %
60Variations in Meta Description   Relevancy-0.1640252 %84 %
61Number of Links   Authority-0.1653714980 %86 %
62Number of DoFollow Links   Authority-0.1652314580 %86 %
63Variations in the Canonical URL   Relevancy-0.1641246 %83 %
64Variations in ALT Attributes   Relevancy-0.16417743 %83 %
65Variation Density in Top 30KB   Relevancy-0.16295258 %82 %
66LSI Words in H1 Tags   Relevancy-0.1618557 %92 %
67Number of Internal Links   Authority-0.1652613479 %86 %
68Variations in Main Tags   Relevancy-0.16145746136 %85 %
69Exact Matches in the HTML Tag   Relevancy-0.168261129 %83 %
70Variations in Span Tags   Relevancy-0.16834949 %88 %
71Variations in A Tag HREF Attributes   Relevancy-0.1629773857 %89 %
72Percentage of DoFollow Links   Authority-0.16988280 %88 %
73Number of External Links   Authority-0.161061576 %85 %
74Variations in Distinct A Tag HREF Attributes   Relevancy-0.1619842357 %89 %
75Number of DoFollow External Links   Authority-0.15661475 %85 %
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 %
80Number of CSS Includes   Technology-0.15321073 %78 %
81Number of Forms   Technology-0.1519254 %82 %
82Percentage of DoFollow Internal Links   Authority-0.15907279 %86 %
83Variations in OpenGraph Description   Relevancy-0.154248 %79 %
84Variations in OpenGraph Title   Relevancy-0.157152 %78 %
85Number of HTML Comments   Size-0.157075572 %85 %
86Variations in Script Tags   Relevancy-0.158975611561 %84 %
87Variations in Absolute URLs   Relevancy-0.1595175458 %87 %
88Variations in Search Result URL   Relevancy-0.1517152 %77 %
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 %81 %
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 %
98Has Meta Charset   Technology-0.151174 %83 %
99LSI Words in H2 Tags   Relevancy-0.14922155 %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-0.1483872745 %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-0.1499028883 %79 %
109Entities in H4 Tags-0.1419222 %88 %
110Percentage of DoFollow External Links   Authority-0.14301174 %79 %
111Has Entities in H3 Tags   Relevancy-0.141146 %84 %
112Variations in Section Tags   Relevancy-0.1410471736 %83 %
113Number Of JSON-LD Types   Relevancy-0.141501456 %81 %
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-0.142116 %78 %
119Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
120Number of Questions In Headings   Size-0.148236 %82 %
121Has Canonical URL   Authority-0.141171 %79 %
122Variations in Footer Tags   Relevancy-0.1460121034 %83 %
123LSI Words in H3 Tags   Relevancy-0.141272248 %89 %
124Leading Variations in H2 Tags   Relevancy-0.148121 %82 %
125Number of Prices   Size-0.1329627569 %81 %
126Number of Questions   Size-0.13811167 %78 %
127Number of Social Pages   Authority-0.1330465 %81 %
128Number of Instagram Pages   Authority-0.1312245 %78 %
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 %
134Has Meta Description   Relevancy-0.131166 %74 %
135Has Privacy Policy   Trust-0.131159 %74 %
136Is Home Page   Other-0.131120 %45 %
137Uses JSON-LD name   Other-0.131153 %76 %
138Meta Description Tag Has Entities   Relevancy-0.131158 %81 %
139Number of US Phone Numbers   Trust-0.136671242 %80 %
140Has Email   Trust-0.131143 %71 %
141Inline JavaScript Kilobytes   Size-0.13101912180 %72 %
142Number of Facebook Accounts   Authority-0.133129 %78 %
143Has OpenGraph Type   Relevancy-0.131161 %70 %
144Headings Has Question   Other-0.131136 %76 %
145Number of Social Accounts   Authority-0.1310243 %78 %
146Title Length   Size-0.131225082 %78 %
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 %77 %
151Number of H4 Tags   Size-0.1320437 %80 %
152Title Word Count   Size-0.1318881 %77 %
153Has US Phone Number   Trust-0.131142 %71 %
154Is Store Page   Other-0.131146 %68 %
155Is Purchase Page   Other-0.131147 %65 %
156Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
157Variations in TITLE Attributes   Relevancy-0.13268535 %80 %
158Exact Matches in Sentences   Relevancy-0.1342320 %84 %
159Variations making whole A Tags   Relevancy-0.1268128 %76 %
160Variations in Strong Tags   Relevancy-0.1262224 %79 %
161Has Meta Twitter Card   Authority-0.121152 %65 %
162Has Contact Page   Trust-0.121163 %70 %
163Variations in the last 100 words   Relevancy-0.12149344 %80 %
164Has OpenGraph Image   Relevancy-0.121154 %68 %
165Variations in I Tags   Relevancy-0.12108322 %79 %
166Variations in Meta Twitter Description   Relevancy-0.1223123 %72 %
167Has Schema Markup   Relevancy-0.121164 %74 %
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 %80 %
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 %
179Leading Variations in H3 Tags   Relevancy-0.1212115 %77 %
180Uses Schema collectionpage   Other-0.12114 %32 %
181Variations in H4-H6 Tags   Relevancy-0.1216117 %79 %
182Uses Schema sku   Other-0.12115 %27 %
183Number of Questions In H2 Tags   Size-0.124123 %75 %
184Variations in Button Tags   Relevancy-0.12256549 %80 %
185Number of Twitter Accounts   Authority-0.123125 %71 %
186Uses JSON-LD ItemList   Other-0.12114 %44 %
187Has Entities in H4 Tags   Relevancy-0.121123 %78 %
188Percentage of NoFollow Links   Authority-0.1215222 %74 %
189Uses Schema itemlist   Other-0.12114 %45 %
190Uses JSON-LD ListItem   Other-0.121134 %71 %
191Uses Schema organization   Other-0.111135 %67 %
192Uses JSON-LD description   Other-0.111141 %70 %
193Is Article Page   Other-0.111142 %67 %
194Has Apple Touch Icon   Technology-0.111151 %73 %
195Uses JSON-LD sku   Other-0.11114 %27 %
196Is Category Page   Other-0.111115 %66 %
197Number of NoFollow External Links   Authority-0.1140317 %75 %
198Exact Matches in H1 Tags   Relevancy-0.112112 %80 %
199Has Meta Twitter Description   Authority-0.111130 %59 %
200LSI Words in H4 Tags   Relevancy-0.1173728 %86 %