Measures 149788 SEO Factors

148066 Built-In SEO Factors

138889 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 2019-2     previous - today - next

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Factors Used   Diversity-0.541624491 %59 %
2Variations in HTML Tags   Relevancy-0.27271423190 %94 %
3Variations in Body Tags   Relevancy-0.25252119587 %93 %
4Variations in Sentences   Relevancy-0.255406188 %94 %
5Term Frequency   Relevancy-0.258691 %93 %
6Variations in H1-H6 Tags   Relevancy-0.2349881 %93 %
7Variations in H1, H2, and H3 Tags   Relevancy-0.2347780 %92 %
8Variations in A Tags   Relevancy-0.235013081 %92 %
9Variations in Div Tags   Relevancy-0.2395212988 %57 %
10Variations in A Tag HREF Attributes   Relevancy-0.2318835378 %92 %
11Variations in Search Result Link Text   Relevancy-0.235287 %83 %
12Variations in Search Result Display URL   Relevancy-0.235287 %83 %
13Keywords in pages top 10 most used phrases-0.226272 %87 %
14Variations in Search Result URL Path   Relevancy-0.225266 %78 %
15Variations in Search Result URL   Relevancy-0.225268 %80 %
16Variations in P Tags   Relevancy-0.223053578 %89 %
17Variations in Absolute URLs   Relevancy-0.226086278 %90 %
18Variations in H1 and H2 Tags   Relevancy-0.2257477 %91 %
19Keywords in pages top 5 most used phrases-0.224262 %86 %
20Exact Matches in Body Tag   Relevancy-0.223841337 %83 %
21Exact Matches in the HTML Tag   Relevancy-0.221236353438 %82 %
22Variations in LI Tags   Relevancy-0.214862378 %93 %
23Variations in the Title Tag   Relevancy-0.215283 %78 %
24Exact Matches in Sentences   Relevancy-0.2161435 %81 %
25Variations in the Canonical URL   Relevancy-0.215253 %82 %
26Search Result Number of Site Links   Other-0.2211 %50 %
27Keywords in pages top 3 most used phrases-0.23153 %84 %
28Variations in First 100 Words   Relevancy-0.239873 %81 %
29Variations in Search Result Document File Name   Relevancy-0.25261 %75 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1923250 %89 %
31Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1923247 %88 %
32Variations in H2 Tags   Relevancy-0.1955344 %89 %
33Variations in Meta Description   Relevancy-0.199260 %86 %
34Exact Matches in H1-H6 Tags   Relevancy-0.1913127 %75 %
35Variations in H1 Tags   Relevancy-0.194268 %82 %
36Variations in Script Tags   Relevancy-0.184003659 %90 %
37Variations in Span Tags   Relevancy-0.1898958 %90 %
38TF/IDF   Relevancy-0.181176 %79 %
39Unabridged Word Count   Size-0.1811161197893 %50 %
40Clean Text Kilobytes   Size-0.182191291 %80 %
41Number of Sentences   Size-0.184866993 %79 %
42Word Count   Size-0.178583140893 %78 %
43Exact Matches in Title Tag   Relevancy-0.172126 %69 %
44Variations in H3 Tags   Relevancy-0.1721333 %88 %
45Leading Variations in Title Tag   Relevancy-0.171136 %76 %
46Variations in ALT Attributes   Relevancy-0.1798333 %85 %
47Exact Matches in A Tags   Relevancy-0.1749323 %70 %
48Exact Matches in H1 Tags   Relevancy-0.1735121 %65 %
49Variations in the last 100 words   Relevancy-0.1722560 %79 %
50Keywords in pages most used phrase-0.161129 %74 %
51Variations making whole A Tags   Relevancy-0.1619236 %83 %
52Variations in Search Result Summary   Relevancy-0.169390 %76 %
53Number of HTTPS Links   Authority-0.1657213886 %80 %
54Variations in OpenGraph Title   Relevancy-0.164152 %74 %
55Leading Variations in H1 Tags   Relevancy-0.162131 %79 %
56Number of HTML Tags   Size-0.16337495594 %50 %
57Leading Variations in H2 Tags   Relevancy-0.1622120 %83 %
58Page Size Kilobytes   Size-0.1653014793 %83 %
59Variations in OpenGraph Description   Relevancy-0.158245 %81 %
60Number of P Tags   Size-0.152923788 %49 %
61Variations in TITLE Attributes   Relevancy-0.15100431 %86 %
62Exact Matches in H2 Tags   Relevancy-0.157112 %62 %
63Variations in Article Tags   Relevancy-0.153462333 %75 %
64Variations Making Whole Span Tags   Relevancy-0.1557119 %81 %
65Exact Matches in Meta Description   Relevancy-0.15118116 %66 %
66Variations in Nav Tags   Relevancy-0.152081439 %50 %
67Variations in Strong Tags   Relevancy-0.1582332 %83 %
68Title Has Best   Other-0.151114 %53 %
69Variations Making Whole LI Tags   Relevancy-0.157126 %79 %
70Body Tag Size Kilobytes   Size-0.1537910590 %82 %
71Number of Heading Tags   Size-0.15612089 %50 %
72Number of Nofollow Links   Authority-0.15138940 %83 %
73Variations in Summary Tags   Relevancy-0.151681446 %50 %
74Number of Links   Authority-0.1563816190 %75 %
75Has MicroData Thumbnail-0.15112 %12 %
76Title Has Sales Words   Other-0.151118 %63 %
77Number of NoFollow External Links   Authority-0.1566427 %82 %
78Number of Internal Links   Authority-0.1562114090 %75 %
79Search Result Uses HTTPS   Other-0.141179 %78 %
80Number of DoFollow Links   Authority-0.1463315290 %74 %
81Variations making whole H1-H6 Tags   Relevancy-0.143116 %75 %
82Title Has Sentiment Words   Other-0.141119 %63 %
83Number of Images   Size-0.143172990 %76 %
84Number of External Links   Authority-0.141762286 %73 %
85Percentage of NoFollow Links   Authority-0.1422638 %79 %
86Number of Images with ALT Text   Size-0.141681782 %76 %
87Number of Absolute URLs   Authority-0.1468618992 %78 %
88Variations making whole H1, H2, and H3 Tags   Relevancy-0.143115 %74 %
89Number of H2 Tags   Size-0.1425671 %50 %
90Variations in Section Tags   Relevancy-0.142751533 %83 %
91Percentage of NoFollow External Links   Authority-0.1418326 %77 %
92Number of H3 Tags   Size-0.1436866 %50 %
93Variations in Meta Twitter Description   Relevancy-0.146128 %75 %
94Variations in Class Attributes   Relevancy-0.14176628 %76 %
95Search Result Link Text Length   Size-0.14835793 %64 %
96Inline JavaScript Kilobytes   Size-0.142644087 %81 %
97Leading Variations in H3 Tags   Relevancy-0.146115 %80 %
98Variations in Meta Twitter Content   Relevancy-0.143131 %71 %
99Title Has Year   Other-0.14119 %54 %
100Search Result Summary Length   Size-0.1447425694 %67 %
101Variations in Footer Tags   Relevancy-0.1474532 %48 %
102Variations in Host Citations   Relevancy-0.13418511 %62 %
103Search Result Number of Dirs in Path   Other-0.134281 %57 %
104Variations in Value Attributes   Relevancy-0.13254215 %75 %
105Variations in H4-H6 Tags   Relevancy-0.1315220 %81 %
106Search Result Link Text Has Year   Other-0.13119 %50 %
107Search Result Has Schema   Other-0.13117 %54 %
108Variations making whole H1 Tags   Relevancy-0.131110 %69 %
109Exact Matches making whole H1-H6 Tags   Relevancy-0.13218 %49 %
110Word Count in Meta Description   Size-0.13892268 %77 %
111Variations in I Tags   Relevancy-0.1341322 %81 %
112Has Terms of Service   Trust-0.131144 %66 %
113Has Canonical URL   Authority-0.131163 %71 %
114Variations in ID Attributes   Relevancy-0.1316112 %74 %
115Exact Matches making whole H1, H2, and H3 Tags   Relevancy-0.13218 %49 %
116Has Privacy Policy   Trust-0.131162 %68 %
117Variations in Main Tags   Relevancy-0.137544222 %48 %
118Head Size Kilobytes   Size-0.131313791 %79 %
119Number of US Phone Numbers   Trust-0.13819837 %73 %
120Search Result Has Rating   Other-0.13116 %51 %
121Meta Description Length   Size-0.1348713068 %76 %
122Number of DoFollow External Links   Authority-0.131741883 %69 %
123Variations in H4 Tags   Relevancy-0.1311116 %80 %
124Exact Matches in H3 Tags   Relevancy-0.13617 %51 %
125Number of Social Accounts   Authority-0.1311359 %66 %
126Exact Matches making whole H1 Tags   Relevancy-0.13116 %45 %
127Search Result URL Length   Size-0.131026494 %48 %
128Number of YouTube Embeds   Technology-0.134110 %63 %
129Number of Videos   Technology-0.124110 %63 %
130Number of Amazon Ads   Technology-0.1211113 %55 %
131Number of Ads   Technology-0.1211113 %55 %
132Has Rel Next Link   Authority-0.12117 %63 %
133Has Rel Pagination   Authority-0.12117 %62 %
134Variations in OpenGraph Site Name   Relevancy-0.122112 %62 %
135Title Word Count   Size-0.1218992 %57 %
136Variations in Style Tags   Relevancy-0.12115613 %66 %
137Is OpenGraph Type Article   Technology-0.121136 %56 %
138Percentage of NoFollow Internal Links   Authority-0.1219326 %74 %
139Variations in Aside Tags   Relevancy-0.1281618 %46 %
140Variations in Em Tags   Relevancy-0.1212110 %70 %
141Exact Matches making whole A Tags   Relevancy-0.12318 %45 %
142Variations in Label Tags   Relevancy-0.121316 %65 %
143Number of Forms   Technology-0.1236373 %69 %
144Has OpenGraph Image   Relevancy-0.121148 %64 %
145Variations Making Whole Strong Tags   Relevancy-0.12817 %72 %
146Variations in Search Result URL Host Name   Relevancy-0.12114 %43 %
147Number of Facebook Accounts   Authority-0.125139 %66 %
148Variations in Search Result URL Domain Name   Relevancy-0.12114 %44 %
149Variations in Meta Keywords   Relevancy-0.1228219 %72 %
150Leading Variations in H4-H6 Tags   Relevancy-0.126110 %73 %
151Flesch Kincaid Reading Ease   -0.121517194 %67 %
152Title Length   Size-0.121115992 %54 %
153Number of H4 Tags   Size-0.1223445 %46 %
154Variations in Form Tags   Relevancy-0.128112 %70 %
155Exact Matches in Search Result URL   Relevancy-0.121111 %20 %
156Variations in HTML Comment Tags   Relevancy-0.1257313 %72 %
157Average Words Per Sentence   Size-0.124774391 %67 %
158Number of Twitter Accounts   Authority-0.127150 %64 %
159Variations in B Tags   Relevancy-0.1230213 %78 %
160Number of Social Pages   Authority-0.12215353 %69 %
161Percentage of DoFollow Internal Links   Authority-0.12977989 %61 %
162Has Amazon Ads   Other-0.121113 %51 %
163Has Ads   Other-0.121113 %51 %
164Number of Images without ALT Text   Size-0.122471374 %70 %
165Has YouTube Embed   Technology-0.121110 %57 %
166Leading Variations in H4 Tags   Relevancy-0.12617 %70 %
167Has Video   Technology-0.121111 %57 %
168Aggressive Variation Density   Relevancy-0.121519 %63 %
169Load Time Milliseconds   Performance-0.12158727397394 %63 %
170Has OpenGraph Type   Relevancy-0.121154 %61 %
171Has Meta Twitter Description   Authority-0.121132 %62 %
172Inline CSS Kilobytes   Size-0.121202449 %75 %
173Number of HREF Lang Tags   Size-0.121629 %69 %
174Title Has Question Words   Other-0.121113 %44 %
175Has US Phone Number   Trust-0.121137 %53 %
176Has Schema Video Object-0.11112 %21 %
177Number of Google Plus Pages   Authority-0.116120 %67 %
178Leading Variations in Meta Description   Relevancy-0.111110 %66 %
179Has Meta Description   Relevancy-0.111169 %67 %
180Number of Instagram Pages   Authority-0.11214233 %62 %
181Number of Affiliate Links - Amazon   Technology-0.11926 %25 %
182Number of CSS Includes   Technology-0.1117886 %54 %
183Variations in Button Tags   Relevancy-0.112714 %34 %
184Number of YouTube Accounts   Technology-0.113116 %63 %
185Variations in Cite Tags   Relevancy-0.111312 %31 %
186Title Has Top   Other-0.11114 %39 %
187Has Schema Markup   Relevancy-0.111147 %61 %
188Variations in Figure Tags   Relevancy-0.113939 %44 %
189Has MicroData   Relevancy-0.111138 %56 %
190Has Meta Twitter Title   Authority-0.111134 %59 %
191Variations making whole B Tags   Relevancy-0.111013 %56 %
192Has FavIcon   Technology-0.111163 %58 %
193Has XMLRPC   Technology-0.111128 %51 %
194Has Apple Touch Icon   Technology-0.111138 %62 %
195Number of Includes   Technology-0.112192289 %56 %
196Variations in Option Tags   Relevancy-0.114116 %63 %
197Has Meta Twitter Card   Authority-0.111139 %57 %
198Has Contact Page   Trust-0.111168 %53 %
199Percentage of DoFollow External Links   Authority-0.11351582 %56 %
200Has MicroData name-0.111124 %58 %