Measures 143171 SEO Factors

141449 Built-In SEO Factors

132381 On-page SEO Factors

9068 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 2020-12     previous - today - next

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Search Result Has Publish Date-0.521128 %11 %
2Number of Distinct Entities Used   Diversity-0.3732687 %59 %
3Variations in HTML Tags   Relevancy-0.2693116288 %97 %
4Number of Factors Used   Diversity-0.2619813894 %91 %
5Term Frequency   Relevancy-0.258688 %95 %
6Variations in Div Tags   Relevancy-0.2473011986 %95 %
7Variations in Body Tags   Relevancy-0.2490814381 %96 %
8Variations in A Tags   Relevancy-0.241482879 %96 %
9Variations in H1-H6 Tags   Relevancy-0.2439978 %95 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2434777 %94 %
11Variations in A Tag HREF Attributes   Relevancy-0.236884573 %94 %
12Search Result Publish Date-0.232010624408163070028976 %36 %
13Entities in Title Tag   Relevancy-0.227376 %58 %
14Variations in H1 and H2 Tags   Relevancy-0.2213474 %93 %
15LSI Words in Sentences   Relevancy-0.22342455479 %94 %
16Variations in P Tags   Relevancy-0.221643376 %94 %
17Variations in LI Tags   Relevancy-0.221351970 %94 %
18Variations in Search Result Display URL   Relevancy-0.226288 %85 %
19Variations in Search Result Link Text   Relevancy-0.226287 %85 %
20Entities in H2 Tags-0.2129551 %59 %
21Variations in Sentences   Relevancy-0.211041976 %90 %
22Variations in the Title Tag   Relevancy-0.216280 %84 %
23Keywords in pages top 10 most used phrases-0.215268 %89 %
24LSI Words in Title Tag   Relevancy-0.2121676 %88 %
25Variations in Script Tags   Relevancy-0.22513665 %93 %
26Entities in H3 Tags-0.237642 %59 %
27Variations in Search Result URL   Relevancy-0.24260 %83 %
28Entities in H1 Tags-0.26260 %54 %
29Ahrefs Referring Class C Addresses   Authority-0.27633956 %43 %
30Ahrefs Referring IP Addresses   Authority-0.210815156 %43 %
31DomDetailer Majestic Referring Subnets   Authority-0.22638331710885 %44 %
32Ahrefs Referring Domains   Authority-0.246457356 %43 %
33Variations in H2 Tags   Relevancy-0.1912348 %91 %
34DomDetailer Majestic IPs   Authority-0.1912686706395285 %44 %
35Number of HTML Tags   Size-0.19234981794 %89 %
36Leading Variations in H1-H6 Tags   Relevancy-0.1913251 %93 %
37Ahrefs Domain Rating   Authority-0.19934374 %35 %
38Keywords in pages top 5 most used phrases-0.194257 %88 %
39Ahrefs Rank   Authority-0.19471681 %34 %
40DomDetailer Majestic Referring Domains   Authority-0.19830678736617685 %44 %
41Page Size Kilobytes   Size-0.1941713593 %91 %
42DomDetailer Moz PA   Authority-0.19844387 %43 %
43Variations in Absolute URLs   Relevancy-0.198344367 %92 %
44Ahrefs NoFollow Backlinks   Authority-0.195668333449 %43 %
45Unabridged Word Count   Size-0.1910454176991 %89 %
46Variations in the Canonical URL   Relevancy-0.194247 %83 %
47Variations in H1 Tags   Relevancy-0.194264 %83 %
48Body Tag Size Kilobytes   Size-0.192127981 %90 %
49Variations in Search Result URL Path   Relevancy-0.194259 %79 %
50Variations in Span Tags   Relevancy-0.19441261 %91 %
51Clean Text Kilobytes   Size-0.19511187 %89 %
52Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1912247 %91 %
53Variations in Search Result Document File Name   Relevancy-0.194257 %73 %
54DomDetailer Majestic CF   Authority-0.19803585 %43 %
55Exact Matches in Body Tag   Relevancy-0.191991234 %93 %
56Word Count   Size-0.195416136591 %89 %
57Ahrefs Text Backlinks   Authority-0.18284108522356 %44 %
58Ahrefs Backlinks   Authority-0.18284112527157 %44 %
59Ahrefs Referring Pages   Authority-0.18284112527057 %44 %
60DomDetailer Moz DA   Authority-0.18944387 %42 %
61Number of HTTPS Links   Authority-0.1855813086 %87 %
62Variations in ALT Attributes   Relevancy-0.1867954 %91 %
63Number of Links   Authority-0.1856114189 %84 %
64TF/IDF   Relevancy-0.181171 %83 %
65Exact Matches in the HTML Tag   Relevancy-0.18267934 %91 %
66DomDetailer Majestic Links   Authority-0.188578807094012031185 %43 %
67Variations in Meta Description   Relevancy-0.185259 %87 %
68Number of Internal Links   Authority-0.1855112588 %85 %
69Number of DoFollow Links   Authority-0.1855813588 %83 %
70Number of Sentences   Size-0.181904188 %87 %
71DomDetailer Moz Rank   Authority-0.1810585 %42 %
72Keywords in pages top 3 most used phrases-0.183147 %86 %
73Variations in H3 Tags   Relevancy-0.1824337 %91 %
74DomDetailer Majestic TF   Authority-0.17822977 %42 %
75Variations in First 100 Words   Relevancy-0.1728871 %81 %
76Entities in Meta Description Tag   Relevancy-0.178358 %54 %
77DomDetailer Moz Links   Authority-0.176075904932772829086 %44 %
78Number of P Tags   Size-0.172233785 %86 %
79Ahrefs Dofollow Backlinks   Authority-0.17284025493947 %43 %
80Has Entities in H1 Tags   Relevancy-0.171162 %52 %
81DomDetailer Facebook Shares   Authority-0.1721389207-826349679 %42 %
82LSI Words in H1 Tags   Relevancy-0.1718565 %84 %
83LSI Words in H2 Tags   Relevancy-0.17781457 %92 %
84Number of Heading Tags   Size-0.17512088 %85 %
85Entities in H4 Tags-0.1720324 %57 %
86Number of Absolute URLs   Authority-0.1646412790 %83 %
87Variations in OpenGraph Title   Relevancy-0.165255 %80 %
88Variations in Nav Tags   Relevancy-0.161401544 %91 %
89Number of Images   Size-0.161152886 %84 %
90Title Tag Has Entities   Relevancy-0.161176 %48 %
91Leading Variations in H1 Tags   Relevancy-0.161131 %84 %
92Leading Variations in Title Tag   Relevancy-0.161136 %81 %
93Variations Making Whole Span Tags   Relevancy-0.169120 %86 %
94Entities in Sentences   Relevancy-0.164237151 %96 %
95Number of Images with ALT Text   Size-0.16991879 %84 %
96Ahrefs Has NoFollow Backlinks   Authority-0.161148 %41 %
97Number of Questions   Size-0.1632560 %84 %
98Inline JavaScript Kilobytes   Size-0.162823186 %85 %
99LSI Words in Meta Description Tag   Relevancy-0.16391058 %88 %
100Exact Matches in H1-H6 Tags   Relevancy-0.1615225 %90 %
101Variations in OpenGraph Description   Relevancy-0.167249 %82 %
102Has Entities in H2 Tags   Relevancy-0.151152 %54 %
103Variations in TITLE Attributes   Relevancy-0.15106942 %88 %
104Search Result Uses HTTPS   Other-0.151183 %78 %
105DomDetailer Majestic GOV Backlinks   Authority-0.15145593239395370333 %40 %
106Variations making whole A Tags   Relevancy-0.156232 %87 %
107Ahrefs Has Text Backlinks   Authority-0.151156 %41 %
108Number of H3 Tags   Size-0.1528865 %85 %
109Entities in the HTML Tag   Relevancy-0.15205323053 %95 %
110Number of Questions In Headings   Size-0.156231 %83 %
111Number of External Links   Authority-0.151971782 %80 %
112Variations in Footer Tags   Relevancy-0.1567635 %86 %
113Ahrefs Has Backlinks   Authority-0.151156 %41 %
114Head Size Kilobytes   Size-0.151593688 %85 %
115LSI Words in H3 Tags   Relevancy-0.151351751 %90 %
116Variations in the last 100 words   Relevancy-0.1516458 %83 %
117Number of H2 Tags   Size-0.1518670 %86 %
118Variations in H4-H6 Tags   Relevancy-0.1521223 %85 %
119Ahrefs Word Count   Size-0.154427100455 %31 %
120Leading Variations in H2 Tags   Relevancy-0.154121 %87 %
121Variations in Main Tags   Relevancy-0.142374027 %87 %
122Exact Matches in A Tags   Relevancy-0.1451321 %89 %
123Variations in Section Tags   Relevancy-0.141191735 %85 %
124Variations in H4 Tags   Relevancy-0.1421218 %85 %
125Ahrefs Has Dofollow Backlinks   Authority-0.141146 %41 %
126Number of DoFollow External Links   Authority-0.141951580 %77 %
127Variations Making Whole LI Tags   Relevancy-0.145124 %83 %
128Exact Matches in Title Tag   Relevancy-0.142124 %85 %
129Search Result Number of Dirs in Path   Other-0.144275 %65 %
130Number of Nofollow Links   Authority-0.1472736 %82 %
131Has Canonical URL   Authority-0.141172 %73 %
132Inline CSS Kilobytes   Size-0.141832456 %84 %
133Has Entities in H3 Tags   Relevancy-0.141144 %53 %
134Variations in I Tags   Relevancy-0.1421326 %83 %
135Variations in Strong Tags   Relevancy-0.1417436 %83 %
136Ahrefs Internal Links   Authority-0.144767761 %43 %
137Load Time Milliseconds   Performance-0.14102321303693 %67 %
138Headings Has Question   Other-0.131131 %78 %
139Word Count in Meta Description   Size-0.13642266 %76 %
140Leading Variations in H3 Tags   Relevancy-0.139117 %82 %
141Percentage of DoFollow Internal Links   Authority-0.13947987 %70 %
142Title Has Sentiment Words   Other-0.131111 %74 %
143Number of NoFollow External Links   Authority-0.1355323 %81 %
144Title Has Sales Words   Other-0.131111 %75 %
145Number of Questions In H2 Tags   Size-0.133117 %81 %
146Variations in Value Attributes   Relevancy-0.1321214 %77 %
147Percentage of NoFollow Links   Authority-0.1318435 %75 %
148Number of Questions In H3 Tags   Size-0.134113 %78 %
149Has FavIcon   Technology-0.131174 %68 %
150Has OpenGraph Image   Relevancy-0.131149 %68 %
151Has Privacy Policy   Trust-0.131146 %75 %
152Variations in Class Attributes   Relevancy-0.1397524 %82 %
153Percentage of DoFollow Links   Authority-0.131009287 %69 %
154Number of HREF Lang Tags   Size-0.1318210 %80 %
155Meta Description Length   Size-0.1338912666 %74 %
156Title Word Count   Size-0.13221090 %65 %
157Search Result Has Schema   Other-0.13112 %68 %
158Variations making whole H1-H6 Tags   Relevancy-0.133114 %79 %
159Flesch Kincaid Reading Grade Level   Other-0.137283 %67 %
160Search Result Link Text Length   Size-0.131085694 %66 %
161Number of Forms   Technology-0.1312365 %75 %
162Meta Description Tag Has Entities   Relevancy-0.131158 %47 %
163Ahrefs Image Backlinks-0.1380011125822 %37 %
164Search Result URL Length   Size-0.13976292 %49 %
165Ahrefs Images   Relevancy-0.12771653 %28 %
166Keywords in pages most used phrase-0.121123 %78 %
167Variations in Article Tags   Relevancy-0.121231829 %78 %
168Number of Social Accounts   Authority-0.125244 %71 %
169Percentage of NoFollow External Links   Authority-0.1215222 %76 %
170Variations making whole H1, H2, and H3 Tags   Relevancy-0.122113 %78 %
171Number of H4 Tags   Size-0.1213443 %78 %
172Number of Facebook Accounts   Authority-0.122130 %70 %
173Exact Matches in H1 Tags   Relevancy-0.122118 %84 %
174Exact Matches in Sentences   Relevancy-0.1236219 %91 %
175Number of US Phone Numbers   Trust-0.12109740 %73 %
176Ahrefs Linked Root Domains   Authority-0.1269762 %40 %
177Has Terms of Service   Trust-0.121132 %74 %
178Number of CSS Includes   Technology-0.1213883 %61 %
179Ahrefs Has Domain Rating   Authority-0.121172 %28 %
180Leading Variations in H4-H6 Tags   Relevancy-0.126111 %81 %
181Number of Includes   Technology-0.1213883 %61 %
182Variations in ID Attributes   Relevancy-0.1211110 %84 %
183Has OpenGraph Type   Relevancy-0.121156 %64 %
184Has DocType Tag   Technology-0.121185 %60 %
185Number of Images without ALT Text   Size-0.12801167 %77 %
186Number of JavaScript Includes   Technology-0.12231486 %69 %
187Number of HTML Comments   Size-0.121592974 %77 %
188Has Copyright   Trust-0.121168 %68 %
189LSI Words in H4 Tags   Relevancy-0.1254733 %84 %
190Title Has Year   Other-0.12117 %75 %
191Variations in Meta Twitter Description   Relevancy-0.124120 %72 %
192Has Entities in H4 Tags   Relevancy-0.121125 %49 %
193Variations in B Tags   Relevancy-0.1211214 %80 %
194Exact Matches in H2 Tags   Relevancy-0.126111 %89 %
195Has Meta Description   Relevancy-0.121167 %73 %
196Number of Instagram Pages   Authority-0.119128 %71 %
197Title Length   Size-0.111465890 %62 %
198Ahrefs Page Size   Size-0.11610602113557 %29 %
199Percentage of NoFollow Internal Links   Authority-0.1115325 %72 %
200Number of YouTube Accounts   Technology-0.111110 %72 %