Measures 149780 SEO Factors

148058 Built-In SEO Factors

138881 On-page SEO Factors

9177 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 2020-7     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-0.31642888 %31 %
2Variations in HTML Tags   Relevancy-0.2598817088 %95 %
3Number of Factors Used   Diversity-0.2519712895 %90 %
4Variations in Body Tags   Relevancy-0.2554014882 %95 %
5Variations in Div Tags   Relevancy-0.2461612387 %94 %
6Term Frequency   Relevancy-0.248688 %95 %
7Variations in A Tags   Relevancy-0.231593280 %94 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2337779 %93 %
9Variations in H1-H6 Tags   Relevancy-0.2242980 %94 %
10Exact Matches in Body Tag   Relevancy-0.222022147 %92 %
11Variations in LI Tags   Relevancy-0.221052173 %93 %
12Exact Matches in the HTML Tag   Relevancy-0.222051748 %92 %
13Variations in A Tag HREF Attributes   Relevancy-0.222854873 %94 %
14Variations in H1 and H2 Tags   Relevancy-0.2213576 %91 %
15Variations in Search Result Display URL   Relevancy-0.217287 %78 %
16Variations in Search Result Link Text   Relevancy-0.217287 %78 %
17Variations in P Tags   Relevancy-0.211683276 %91 %
18Entities in H2 Tags-0.2128655 %31 %
19LSI Words in Sentences   Relevancy-0.21443480178 %93 %
20Variations in Search Result URL Path   Relevancy-0.215268 %72 %
21Leading Variations in H1, H2, and H3 Tags   Relevancy-0.2132251 %90 %
22Leading Variations in H1-H6 Tags   Relevancy-0.2138354 %91 %
23Page Size Kilobytes   Size-0.238113595 %88 %
24Search Result Publish Date-0.22010556151173558300483 %33 %
25Variations in Search Result Document File Name   Relevancy-0.25264 %67 %
26Variations in the Title Tag   Relevancy-0.27280 %76 %
27Body Tag Size Kilobytes   Size-0.22017882 %90 %
28Number of HTML Tags   Size-0.2274691095 %86 %
29Keywords in pages top 10 most used phrases-0.25265 %85 %
30Ahrefs Referring IP Addresses   Authority-0.210457443 %17 %
31Entities in Title Tag   Relevancy-0.27376 %28 %
32Unabridged Word Count   Size-0.28440187394 %83 %
33Ahrefs Referring Domains   Authority-0.211819043 %17 %
34Variations in ALT Attributes   Relevancy-0.257958 %91 %
35Entities in H3 Tags-0.228644 %30 %
36Ahrefs Referring Class C Addresses   Authority-0.26895443 %17 %
37Exact Matches in H1-H6 Tags   Relevancy-0.211238 %90 %
38Word Count   Size-0.26395148194 %82 %
39Variations in H2 Tags   Relevancy-0.212348 %91 %
40Variations in Sentences   Relevancy-0.191111874 %89 %
41Variations in Search Result URL   Relevancy-0.195265 %78 %
42Clean Text Kilobytes   Size-0.19701190 %82 %
43Ahrefs Rank   Authority-0.19381479 %15 %
44Ahrefs Backlinks   Authority-0.1957881824779044 %17 %
45Ahrefs Referring Pages   Authority-0.1957881824779044 %17 %
46Ahrefs Text Backlinks   Authority-0.1957881784752843 %17 %
47Variations in Span Tags   Relevancy-0.19981262 %91 %
48Leading Variations in Title Tag   Relevancy-0.191142 %78 %
49Variations in Script Tags   Relevancy-0.192072962 %91 %
50Number of HTTPS Links   Authority-0.1849915488 %86 %
51Ahrefs NoFollow Backlinks   Authority-0.1832088116636 %16 %
52Variations in Absolute URLs   Relevancy-0.182974867 %91 %
53LSI Words in Title Tag   Relevancy-0.1825774 %87 %
54Variations in Meta Description   Relevancy-0.189260 %85 %
55Leading Variations in H1 Tags   Relevancy-0.182136 %81 %
56Number of P Tags   Size-0.182734089 %83 %
57Exact Matches in A Tags   Relevancy-0.1844534 %89 %
58Keywords in pages top 5 most used phrases-0.183155 %86 %
59Ahrefs Dofollow Backlinks   Authority-0.1757879804780637 %16 %
60Ahrefs Word Count   Size-0.172920108249 %16 %
61Variations in First 100 Words   Relevancy-0.1725767 %79 %
62Number of Links   Authority-0.1750416791 %83 %
63Variations in H1 Tags   Relevancy-0.175267 %78 %
64Number of Internal Links   Authority-0.1749115090 %84 %
65Number of Sentences   Size-0.172284291 %81 %
66Variations in the Canonical URL   Relevancy-0.175251 %79 %
67TF/IDF   Relevancy-0.171170 %80 %
68Ahrefs Domain Rating   Authority-0.17924577 %15 %
69Variations in H3 Tags   Relevancy-0.1734337 %89 %
70Number of DoFollow Links   Authority-0.1750016091 %83 %
71Variations in Strong Tags   Relevancy-0.1727438 %83 %
72Number of Images with ALT Text   Size-0.171432082 %85 %
73Variations in Nav Tags   Relevancy-0.171381644 %89 %
74Ahrefs Has Text Backlinks   Authority-0.171142 %16 %
75Ahrefs Has NoFollow Backlinks   Authority-0.171135 %16 %
76Exact Matches in Title Tag   Relevancy-0.163137 %82 %
77LSI Words in H2 Tags   Relevancy-0.161332158 %92 %
78Ahrefs Has Backlinks   Authority-0.161143 %16 %
79Leading Variations in H2 Tags   Relevancy-0.1620123 %87 %
80Title Tag Has Entities   Relevancy-0.161176 %24 %
81Number of Images   Size-0.161823189 %83 %
82Variations in TITLE Attributes   Relevancy-0.16921044 %86 %
83Entities in Meta Description Tag   Relevancy-0.169362 %28 %
84Number of Heading Tags   Size-0.161452190 %86 %
85Keywords in pages top 3 most used phrases-0.162144 %84 %
86Variations Making Whole LI Tags   Relevancy-0.167128 %82 %
87Entities in H1 Tags-0.167263 %28 %
88Inline JavaScript Kilobytes   Size-0.161282889 %85 %
89Search Result Uses HTTPS   Other-0.161185 %78 %
90Variations making whole A Tags   Relevancy-0.169234 %85 %
91Ahrefs Internal Links   Authority-0.164097053 %17 %
92Ahrefs Page Size   Size-0.16667302058051 %17 %
93Variations in the last 100 words   Relevancy-0.1613456 %80 %
94Variations Making Whole Span Tags   Relevancy-0.169121 %84 %
95Exact Matches in Sentences   Relevancy-0.1524327 %89 %
96Ahrefs Has Dofollow Backlinks   Authority-0.151136 %16 %
97Number of H2 Tags   Size-0.1528773 %87 %
98DomDetailer Majestic CF   Authority-0.15643070 %15 %
99Number of Absolute URLs   Authority-0.1597014492 %81 %
100Entities in H4 Tags-0.1538326 %29 %
101Exact Matches in H2 Tags   Relevancy-0.155118 %87 %
102LSI Words in Meta Description Tag   Relevancy-0.15491358 %90 %
103Head Size Kilobytes   Size-0.151373287 %84 %
104DomDetailer Moz PA   Authority-0.15663371 %16 %
105Variations making whole H1-H6 Tags   Relevancy-0.152117 %81 %
106Variations making whole H1, H2, and H3 Tags   Relevancy-0.152115 %79 %
107Variations in OpenGraph Title   Relevancy-0.153155 %73 %
108DomDetailer Moz DA   Authority-0.15783270 %15 %
109Ahrefs Linked Root Domains   Authority-0.1517653 %17 %
110Variations in Search Result Summary   Relevancy-0.156261 %75 %
111Has Entities in H1 Tags   Relevancy-0.151165 %27 %
112DomDetailer Majestic IPs   Authority-0.152324093092871 %16 %
113DomDetailer Majestic Referring Domains   Authority-0.15131371216757871 %16 %
114Number of Questions   Size-0.1532565 %82 %
115Number of External Links   Authority-0.151391884 %71 %
116Load Time Milliseconds   Performance-0.1522044313195 %67 %
117DomDetailer Majestic Referring Subnets   Authority-0.1563478869271 %16 %
118Search Result Summary Length   Size-0.1535818782 %73 %
119Ahrefs Images   Relevancy-0.14681848 %16 %
120Variations in Section Tags   Relevancy-0.14771635 %85 %
121Inline CSS Kilobytes   Size-0.141312455 %82 %
122Exact Matches in H1 Tags   Relevancy-0.142128 %81 %
123LSI Words in H1 Tags   Relevancy-0.1441664 %84 %
124Number of Questions In Headings   Size-0.1412234 %85 %
125Variations in Footer Tags   Relevancy-0.1437633 %82 %
126Variations in Main Tags   Relevancy-0.142503926 %81 %
127Variations in OpenGraph Description   Relevancy-0.145249 %80 %
128Number of H3 Tags   Size-0.1433867 %84 %
129Exact Matches in Meta Description   Relevancy-0.143125 %84 %
130Variations in I Tags   Relevancy-0.1441329 %85 %
131DomDetailer Majestic Links   Authority-0.145281136526141771 %16 %
132Has Entities in H2 Tags   Relevancy-0.141156 %29 %
133Ahrefs Has Linked Root Domains   Authority-0.141152 %17 %
134Ahrefs Has Images   Other-0.141146 %14 %
135Ahrefs External Links   Authority-0.141651449 %17 %
136DomDetailer Moz Links   Authority-0.14607242651072456770 %15 %
137LSI Words in H3 Tags   Relevancy-0.141782452 %90 %
138Leading Variations in H3 Tags   Relevancy-0.1415118 %85 %
139Ahrefs Has Internal Links   Authority-0.141152 %17 %
140DomDetailer Majestic TF   Authority-0.14632266 %15 %
141Ahrefs Pages   Size-0.145153 %16 %
142Ahrefs Has External Links   Authority-0.141149 %16 %
143Number of Nofollow Links   Authority-0.14153839 %76 %
144Has Entities in H3 Tags   Relevancy-0.141145 %28 %
145Number of Questions In H2 Tags   Size-0.143119 %80 %
146Number of DoFollow External Links   Authority-0.141311582 %72 %
147Number of Forms   Technology-0.1314372 %76 %
148DomDetailer Moz Rank   Authority-0.138470 %15 %
149Variations making whole H1 Tags   Relevancy-0.131110 %78 %
150DomDetailer Facebook Shares   Authority-0.1369505650656615766 %16 %
151Variations in H4-H6 Tags   Relevancy-0.1318223 %82 %
152Percentage of DoFollow Internal Links   Authority-0.13948189 %70 %
153Headings Has Question   Other-0.131134 %80 %
154Variations in Article Tags   Relevancy-0.131452030 %69 %
155Number of NoFollow External Links   Authority-0.1338326 %75 %
156Variations in H4 Tags   Relevancy-0.1317218 %80 %
157Search Result Number of Dirs in Path   Other-0.135284 %62 %
158Variations in Search Result URL Domain Name   Relevancy-0.13117 %48 %
159Leading Variations in Meta Description   Relevancy-0.131115 %72 %
160Percentage of NoFollow Links   Authority-0.1326538 %70 %
161Has Meta Description   Relevancy-0.131171 %74 %
162Has Privacy Policy   Trust-0.131148 %72 %
163Meta Description Tag Has Entities   Relevancy-0.131163 %25 %
164Has FavIcon   Technology-0.121175 %66 %
165Variations in Class Attributes   Relevancy-0.12358726 %83 %
166Variations in ID Attributes   Relevancy-0.1216112 %83 %
167Number of Images without ALT Text   Size-0.12701270 %74 %
168Word Count in Meta Description   Size-0.12652469 %79 %
169Variations in Em Tags   Relevancy-0.1211215 %73 %
170Has Canonical URL   Authority-0.121173 %72 %
171Variations in Meta Keywords   Relevancy-0.1219220 %72 %
172Meta Description Length   Size-0.1237512969 %77 %
173Number of HTML Comments   Size-0.121582877 %74 %
174Variations Making Whole Strong Tags   Relevancy-0.12319 %82 %
175Number of Social Accounts   Authority-0.126245 %70 %
176Average Words Per Sentence   Size-0.122324990 %69 %
177Number of Twitter Accounts   Authority-0.124136 %63 %
178Number of HREF Lang Tags   Size-0.1228212 %75 %
179Exact Matches in H3 Tags   Relevancy-0.127111 %85 %
180Number of JavaScript Includes   Technology-0.12231385 %66 %
181Variations in B Tags   Relevancy-0.1230214 %78 %
182Has Entities in H4 Tags   Relevancy-0.121127 %26 %
183Has Contact Page   Trust-0.121152 %60 %
184Number of Questions In H3 Tags   Size-0.127114 %78 %
185Flesch Kincaid Reading Grade Level   Other-0.127281 %62 %
186Number of US Phone Numbers   Trust-0.1266531 %75 %
187Number of H4 Tags   Size-0.1226547 %79 %
188Search Result Link Text Length   Size-0.121195395 %64 %
189Number of Instagram Pages   Authority-0.127127 %71 %
190Number of Social Pages   Authority-0.126140 %71 %
191Title Has Sales Words   Other-0.121114 %65 %
192Percentage of NoFollow External Links   Authority-0.1217325 %69 %
193Variations in Value Attributes   Relevancy-0.1214214 %75 %
194Title Has Sentiment Words   Other-0.121115 %66 %
195Number of H5 Tags   Size-0.1295220 %74 %
196Ahrefs Image Backlinks-0.1114688591372817 %14 %
197Percentage of NoFollow Internal Links   Authority-0.1120328 %69 %
198Variations in Meta Twitter Description   Relevancy-0.113123 %70 %
199Leading Variations in H4-H6 Tags   Relevancy-0.1111111 %78 %
200LSI Words in H4 Tags   Relevancy-0.11651135 %83 %