Measures 141916 SEO Factors

140194 Built-In SEO Factors

131183 On-page SEO Factors

9011 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 2021-12     previous - today - next

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Distinct Entities Used   Diversity-0.3683195 %77 %
2Ahrefs NoFollow Backlinks   Authority-0.29118926120965 %11 %
3Ahrefs Referring IP Addresses   Authority-0.2821668069 %11 %
4Ahrefs Referring Class C Addresses   Authority-0.2812255869 %11 %
5Ahrefs Referring Domains   Authority-0.2826248369 %11 %
6Ahrefs Text Backlinks   Authority-0.27255158444968 %12 %
7Ahrefs Backlinks   Authority-0.27255500445869 %12 %
8Ahrefs Referring Pages   Authority-0.27255500445869 %12 %
9Number of Top 50 Shared Factors Used   Diversity-0.26432999 %16 %
10Number of Top 100 Shared Factors Used   Diversity-0.25835899 %16 %
11Number of Top 200 Shared Factors Used   Diversity-0.2413710199 %15 %
12Ahrefs Dofollow Backlinks   Authority-0.24136168331760 %12 %
13Variations in HTML Tags   Relevancy-0.23103819992 %92 %
14Number of Factors Used   Diversity-0.2321714798 %92 %
15Variations in Div Tags   Relevancy-0.2371413791 %91 %
16LSI Words in Sentences   Relevancy-0.22340669787 %97 %
17Variations in Body Tags   Relevancy-0.2298117686 %92 %
18Variations in Distinct A Tag HREF Attributes   Relevancy-0.221823883 %89 %
19Term Frequency   Relevancy-0.228692 %93 %
20Entities in H2 Tags-0.2241762 %76 %
21Variations in A Tag HREF Attributes   Relevancy-0.212675482 %93 %
22Variations in H1-H6 Tags   Relevancy-0.21331085 %90 %
23Entities in Title Tag   Relevancy-0.217385 %73 %
24Exact Matches in Body Tag   Relevancy-0.212131339 %92 %
25Variations in P Tags   Relevancy-0.211784284 %91 %
26Variations in Search Result URL   Relevancy-0.215273 %80 %
27Variations in H1 and H2 Tags   Relevancy-0.2118582 %88 %
28Variations in H1, H2, and H3 Tags   Relevancy-0.2130884 %91 %
29Variations in Sentences   Relevancy-0.211253185 %91 %
30Exact Matches in the HTML Tag   Relevancy-0.2260840 %88 %
31Variations in Search Result URL Path   Relevancy-0.25271 %77 %
32Variations in A Tags   Relevancy-0.21342985 %93 %
33Entities in H3 Tags-0.236752 %76 %
34Keywords in pages top 10 most used phrases-0.26276 %86 %
35Search Result Summary Length   Size-0.234916698 %86 %
36DomDetailer Majestic Referring Subnets   Authority-0.2440751403696 %25 %
37Clean Keyword Density in the HTML Tag   Relevancy-0.211589 %83 %
38Variations in LI Tags   Relevancy-0.21022277 %92 %
39DomDetailer Majestic IPs   Authority-0.21910274706896 %25 %
40DomDetailer Majestic Referring Domains   Authority-0.2157219626726296 %25 %
41Keywords in pages top 5 most used phrases-0.24268 %87 %
42DomDetailer Moz PA   Authority-0.19704697 %24 %
43Entities in Sentences   Relevancy-0.1962412171 %98 %
44DomDetailer Majestic CF   Authority-0.19674095 %25 %
45Variation Density in Top 30KB   Relevancy-0.1911383 %80 %
46Clean Text Kilobytes   Size-0.19311293 %83 %
47Variations in H2 Tags   Relevancy-0.1917457 %92 %
48Unabridged Word Count   Size-0.195212188195 %87 %
49Variations in Search Result Document File Name   Relevancy-0.195268 %70 %
50Variations in Absolute URLs   Relevancy-0.194435775 %90 %
51Body Tag Size Kilobytes   Size-0.192528583 %84 %
52Variations in the Canonical URL   Relevancy-0.195269 %82 %
53Leading Variations in H1-H6 Tags   Relevancy-0.1911359 %86 %
54Leading Variations in H1, H2, and H3 Tags   Relevancy-0.196256 %86 %
55Exact Matches in H1-H6 Tags   Relevancy-0.1812230 %88 %
56Page Size Kilobytes   Size-0.1832515096 %83 %
57Variations in Script Tags   Relevancy-0.184544270 %92 %
58Word Count   Size-0.184262146796 %85 %
59LSI Words in Title Tag   Relevancy-0.1814684 %90 %
60Number of HTML Tags   Size-0.18326784797 %79 %
61Variations in Search Result Summary   Relevancy-0.187395 %82 %
62Ahrefs Has Dofollow Backlinks   Authority-0.181159 %11 %
63Entities in H1 Tags-0.186371 %66 %
64Exact Matches in Top 30KB   Relevancy-0.1828329 %69 %
65Keywords in pages top 3 most used phrases-0.182159 %83 %
66LSI Words in H2 Tags   Relevancy-0.18971968 %93 %
67DomDetailer Moz DA   Authority-0.18854696 %23 %
68Variations in First 100 Words   Relevancy-0.1821877 %80 %
69DomDetailer Majestic TF   Authority-0.18603188 %24 %
70Variations in Span Tags   Relevancy-0.17351164 %88 %
71Entities in the HTML Tag   Relevancy-0.17383237673 %93 %
72DomDetailer Majestic Links   Authority-0.171737425981873617396 %25 %
73Number of Sentences   Size-0.171806093 %84 %
74Exact Matches in Title Tag   Relevancy-0.172128 %82 %
75Leading Variations in Title Tag   Relevancy-0.171143 %74 %
76Variations in Search Result Display URL   Relevancy-0.174293 %76 %
77Variations in Search Result Link Text   Relevancy-0.174293 %76 %
78Number of HTTPS Links   Authority-0.1732113792 %80 %
79Number of P Tags   Size-0.171194091 %83 %
80Variations in Main Tags   Relevancy-0.175066637 %85 %
81LSI Words in Meta Description Tag   Relevancy-0.17291166 %85 %
82Number of Internal Links   Authority-0.1732012293 %79 %
83Number of DoFollow Links   Authority-0.1731513594 %78 %
84Entities in Meta Description Tag   Relevancy-0.1711466 %67 %
85Variations in the Title Tag   Relevancy-0.164286 %74 %
86Number of Links   Authority-0.1632714194 %79 %
87Variations in Meta Description   Relevancy-0.169266 %80 %
88Exact Matches in H1 Tags   Relevancy-0.162122 %82 %
89Variations in H3 Tags   Relevancy-0.1614342 %89 %
90DomDetailer Moz Links   Authority-0.16799765521277735396 %25 %
91DomDetailer Moz Rank   Authority-0.169595 %24 %
92Ahrefs Internal Links   Authority-0.1673810869 %11 %
93Number of Heading Tags   Size-0.16712293 %86 %
94Variation Count in Top 30KB   Relevancy-0.161994588 %74 %
95Leading Variations in H2 Tags   Relevancy-0.164129 %85 %
96Number of Questions In Headings   Size-0.168240 %29 %
97LSI Words in H3 Tags   Relevancy-0.16721859 %91 %
98Leading Variations in H1 Tags   Relevancy-0.161136 %75 %
99DomDetailer Facebook Shares   Authority-0.169481683-418843590 %26 %
100Variations in ALT Attributes   Relevancy-0.1656856 %88 %
101TF/IDF   Relevancy-0.161177 %79 %
102LSI Words in H1 Tags   Relevancy-0.1613574 %86 %
103Variations in Nav Tags   Relevancy-0.162302354 %87 %
104Exact Matches in Sentences   Relevancy-0.1544226 %88 %
105Variations in the last 100 words   Relevancy-0.1511565 %81 %
106Inline JavaScript Kilobytes   Size-0.151123190 %84 %
107Variations making whole A Tags   Relevancy-0.156239 %83 %
108Variations in Footer Tags   Relevancy-0.1554841 %80 %
109Entities in H4 Tags-0.1514327 %70 %
110Number of H2 Tags   Size-0.1521778 %87 %
111Number of Questions   Size-0.1517667 %83 %
112Title Tag Has Entities   Relevancy-0.151185 %56 %
113Has Entities in H3 Tags   Relevancy-0.151154 %64 %
114Variations in H1 Tags   Relevancy-0.144273 %77 %
115Number of Images   Size-0.141032792 %75 %
116Number of Prices   Size-0.141183374 %13 %
117Exact Matches in H2 Tags   Relevancy-0.146114 %88 %
118Number of Absolute URLs   Authority-0.1448914794 %82 %
119Variations Making Whole LI Tags   Relevancy-0.145130 %80 %
120Variations in ID Attributes   Relevancy-0.1414218 %83 %
121Has Entities in H2 Tags   Relevancy-0.141164 %67 %
122Number Of JSON-LD Types   Relevancy-0.14651058 %80 %
123Number of H3 Tags   Size-0.1422870 %84 %
124Number of External Links   Authority-0.14822189 %80 %
125Keywords in pages most used phrase-0.141132 %75 %
126Variations in OpenGraph Description   Relevancy-0.1412256 %79 %
127DomDetailer Majestic GOV Backlinks   Authority-0.1417156557218071847 %23 %
128Variations in Strong Tags   Relevancy-0.1413337 %82 %
129Leading Variations in H3 Tags   Relevancy-0.143120 %79 %
130Variations Making Whole Span Tags   Relevancy-0.146122 %82 %
131Variations in H4-H6 Tags   Relevancy-0.1413225 %80 %
132Number of Images with ALT Text   Size-0.14641885 %79 %
133Variations in TITLE Attributes   Relevancy-0.1437840 %82 %
134Has Entities in H1 Tags   Relevancy-0.141173 %61 %
135Exact Matches in A Tags   Relevancy-0.1387223 %88 %
136Headings Has Question   Other-0.131139 %76 %
137Head Size Kilobytes   Size-0.131174391 %78 %
138Variations in OpenGraph Title   Relevancy-0.134263 %75 %
139Number of DoFollow External Links   Authority-0.13691786 %80 %
140Variations in Class Attributes   Relevancy-0.13181832 %75 %
141Variations in Section Tags   Relevancy-0.13932141 %81 %
142Number of Questions In H2 Tags   Size-0.134123 %78 %
143Variations in Button Tags   Relevancy-0.131517 %76 %
144Inline CSS Kilobytes   Size-0.13753061 %78 %
145Variations in H4 Tags   Relevancy-0.137220 %82 %
146Search Result Number of Dirs in Path   Other-0.134285 %60 %
147Has JSON-LD Answer-0.13115 %63 %
148Number of Questions In H3 Tags   Size-0.133116 %79 %
149Has JSON-LD Question-0.13115 %62 %
150Variations in B Tags   Relevancy-0.1311213 %71 %
151Exact Matches in Meta Description   Relevancy-0.132115 %84 %
152Variations making whole H1-H6 Tags   Relevancy-0.134118 %75 %
153Number of US Phone Numbers   Trust-0.13224948 %73 %
154Meta Description Tag Has Entities   Relevancy-0.131168 %57 %
155Variations making whole H1, H2, and H3 Tags   Relevancy-0.132116 %75 %
156LSI Words in H4 Tags   Relevancy-0.1360837 %85 %
157Search Result Publish Date-0.132014085593196649467998 %51 %
158Variations in Em Tags   Relevancy-0.135111 %76 %
159Variations in Form Tags   Relevancy-0.126114 %71 %
160Load Time Milliseconds   Performance-0.1245855219997 %67 %
161Search Result Uses HTTPS   Other-0.121193 %62 %
162Variations in Article Tags   Relevancy-0.121612637 %82 %
163Has US Phone Number   Trust-0.121148 %57 %
164Variations making whole H1 Tags   Relevancy-0.121110 %71 %
165Title Has Sales Words   Other-0.121124 %73 %
166Has Privacy Policy   Trust-0.121163 %73 %
167Number of H4 Tags   Size-0.1226546 %76 %
168Has JSON-LD Organization-0.121133 %66 %
169Title Has Sentiment Words   Other-0.121125 %73 %
170Variations in Figure Tags   Relevancy-0.12188915 %76 %
171Has JSON-LD ImageObject-0.121137 %65 %
172Number Of JSON-LD Entity References   Relevancy-0.12815 %62 %
173Meta Description Length   Size-0.1246312773 %69 %
174Word Count in Meta Description   Size-0.12792173 %68 %
175Has Terms of Service   Trust-0.121144 %70 %
176Has JSON-LD Country-0.12111 %15 %
177Number of Facebook Accounts   Authority-0.124138 %71 %
178Number of Social Accounts   Authority-0.1211254 %74 %
179Number Of Claimed Brands   Other-0.129220 %69 %
180Search Result URL Length   Size-0.11896398 %48 %
181Has JSON-LD ItemList-0.11113 %43 %
182Variations in I Tags   Relevancy-0.1130323 %76 %
183DomDetailer Facebook Comments   Authority-0.114285213 %20 %
184Has Canonical URL   Authority-0.111178 %67 %
185Number of NoFollow External Links   Authority-0.1130427 %77 %
186Number of Twitter Accounts   Authority-0.116146 %69 %
187Has Entities in H4 Tags   Relevancy-0.111129 %58 %
188Percentage of DoFollow Internal Links   Authority-0.11947993 %63 %
189Leading Variations in H4-H6 Tags   Relevancy-0.115112 %75 %
190Variations in Value Attributes   Relevancy-0.1149215 %71 %
191Number of Social Pages   Authority-0.1112368 %70 %
192Number of Images without ALT Text   Size-0.11711069 %68 %
193Variations in Aside Tags   Relevancy-0.1161718 %75 %
194Bytes To First P Tag   Size-0.11822175309299 %65 %
195Number of HREF Lang Tags   Size-0.1112211 %64 %
196Number of H5 Tags   Size-0.119219 %71 %
197Number of Facebook Pages   Authority-0.118370 %70 %
198Number of Forms   Technology-0.1111271 %64 %
199Number of Nofollow Links   Authority-0.1144737 %77 %
200Has FavIcon   Technology-0.111180 %64 %