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 2021-6     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-0.3622986 %59 %
2Variations in HTML Tags   Relevancy-0.254326939686 %96 %
3Variations in Body Tags   Relevancy-0.243589636680 %96 %
4Number of Factors Used   Diversity-0.2420513394 %92 %
5Variations in Div Tags   Relevancy-0.243181830985 %96 %
6Term Frequency   Relevancy-0.2412585 %95 %
7Variations in Search Result Display URL   Relevancy-0.2316286 %73 %
8Variations in Search Result Link Text   Relevancy-0.2316286 %73 %
9Variations in H1-H6 Tags   Relevancy-0.23170979 %96 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.23130878 %94 %
11Variations in A Tags   Relevancy-0.2362935080 %95 %
12Variations in P Tags   Relevancy-0.2221834778 %94 %
13Clean Keyword Density in the HTML Tag   Relevancy-0.22210584 %45 %
14Variations in A Tag HREF Attributes   Relevancy-0.2133296876 %94 %
15Entities in H3 Tags-0.2123646 %58 %
16Entities in H2 Tags-0.2129655 %57 %
17Variations in H1 and H2 Tags   Relevancy-0.2194575 %92 %
18Variations in LI Tags   Relevancy-0.214522371 %92 %
19LSI Words in Sentences   Relevancy-0.2308241569 %95 %
20Variations in Sentences   Relevancy-0.28792977 %93 %
21Entities in Title Tag   Relevancy-0.27377 %55 %
22DomDetailer Majestic Referring Domains   Authority-0.2186968127905685 %25 %
23Keywords in pages top 10 most used phrases-0.223372 %87 %
24Variations in the Title Tag   Relevancy-0.219278 %74 %
25DomDetailer Majestic IPs   Authority-0.22456294513285 %25 %
26Keywords in pages top 5 most used phrases-0.211264 %88 %
27DomDetailer Majestic Referring Subnets   Authority-0.2609861253485 %25 %
28Variations in ALT Attributes   Relevancy-0.194901053 %92 %
29Variations in Search Result URL   Relevancy-0.1918266 %81 %
30Variations in Script Tags   Relevancy-0.191846216164 %90 %
31Ahrefs NoFollow Backlinks   Authority-0.1914279542 %18 %
32Leading Variations in H1-H6 Tags   Relevancy-0.1916252 %88 %
33Page Size Kilobytes   Size-0.1931713592 %85 %
34Ahrefs Referring Class C Addresses   Authority-0.193562750 %19 %
35Ahrefs Referring Domains   Authority-0.194933850 %19 %
36Body Tag Size Kilobytes   Size-0.191937979 %91 %
37DomDetailer Moz PA   Authority-0.19643885 %24 %
38Variations in Search Result URL Path   Relevancy-0.1810262 %82 %
39Variations in H2 Tags   Relevancy-0.1885449 %93 %
40Ahrefs Referring IP Addresses   Authority-0.184673350 %19 %
41Ahrefs Text Backlinks   Authority-0.1836869181050 %18 %
42Keywords in pages top 3 most used phrases-0.187155 %87 %
43Unabridged Word Count   Size-0.187257167089 %88 %
44Ahrefs Backlinks   Authority-0.1836873180851 %18 %
45Ahrefs Referring Pages   Authority-0.1836873180851 %18 %
46Clean Text Kilobytes   Size-0.18451188 %87 %
47Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811248 %87 %
48Number of HTML Tags   Size-0.18191779791 %85 %
49Variations in First 100 Words   Relevancy-0.18208971 %84 %
50DomDetailer Majestic CF   Authority-0.18603384 %25 %
51DomDetailer Moz DA   Authority-0.18813985 %22 %
52Variations in Span Tags   Relevancy-0.188641559 %89 %
53Variations in Meta Description   Relevancy-0.1855360 %82 %
54Variations in the Canonical URL   Relevancy-0.1850253 %82 %
55Word Count   Size-0.185928129989 %87 %
56Number of P Tags   Size-0.181863686 %85 %
57Exact Matches in the HTML Tag   Relevancy-0.18174736 %89 %
58DomDetailer Moz Links   Authority-0.18751954091216202084 %25 %
59Ahrefs Has NoFollow Backlinks   Authority-0.181141 %18 %
60Entities in Meta Description Tag   Relevancy-0.188459 %52 %
61Ahrefs Dofollow Backlinks   Authority-0.1832373131543 %18 %
62Number of Sentences   Size-0.181604787 %84 %
63Variations in H3 Tags   Relevancy-0.1846338 %90 %
64Variations in H1 Tags   Relevancy-0.1815265 %78 %
65Exact Matches in Body Tag   Relevancy-0.181471234 %91 %
66LSI Words in Title Tag   Relevancy-0.1713566 %90 %
67Entities in H1 Tags-0.175263 %53 %
68Variations in Search Result Document File Name   Relevancy-0.178260 %74 %
69Number of HTTPS Links   Authority-0.1732413387 %82 %
70DomDetailer Moz Rank   Authority-0.179483 %23 %
71Entities in Sentences   Relevancy-0.173618454 %97 %
72Ahrefs Has Text Backlinks   Authority-0.171150 %18 %
73Variations in Absolute URLs   Relevancy-0.1745356369 %90 %
74Number of Links   Authority-0.1732513888 %82 %
75Number of Internal Links   Authority-0.1631512087 %84 %
76Ahrefs Rank   Authority-0.16271268 %13 %
77Ahrefs Has Dofollow Backlinks   Authority-0.161142 %18 %
78DomDetailer Majestic Links   Authority-0.1676651798768229684 %26 %
79Ahrefs Has Backlinks   Authority-0.161151 %18 %
80Number of Questions   Size-0.1626559 %88 %
81Variations in the last 100 words   Relevancy-0.16206661 %79 %
82Number of DoFollow Links   Authority-0.1631913388 %82 %
83Number of Images with ALT Text   Size-0.161441879 %84 %
84Variations making whole A Tags   Relevancy-0.165235 %82 %
85Exact Matches in H1-H6 Tags   Relevancy-0.166126 %88 %
86Entities in H4 Tags-0.168326 %53 %
87Leading Variations in Title Tag   Relevancy-0.161133 %73 %
88Variations in Footer Tags   Relevancy-0.1629752838 %83 %
89Number of Images   Size-0.161662786 %82 %
90Number of Questions In Headings   Size-0.156235 %62 %
91DomDetailer Majestic TF   Authority-0.15572677 %25 %
92Variations in Main Tags   Relevancy-0.151233110231 %87 %
93Inline JavaScript Kilobytes   Size-0.15792987 %81 %
94Ahrefs Domain Rating   Authority-0.15803164 %14 %
95Has Entities in H3 Tags   Relevancy-0.151146 %50 %
96Variations in OpenGraph Description   Relevancy-0.1547250 %80 %
97Variations in OpenGraph Title   Relevancy-0.1512257 %77 %
98Variations Making Whole LI Tags   Relevancy-0.153129 %78 %
99DomDetailer Facebook Shares   Authority-0.157190291-202486865 %26 %
100Variations Making Whole Span Tags   Relevancy-0.156122 %80 %
101Number of H3 Tags   Size-0.1520765 %81 %
102LSI Words in H2 Tags   Relevancy-0.15691251 %92 %
103Keywords in pages most used phrase-0.151129 %77 %
104Variations in Nav Tags   Relevancy-0.1554533748 %86 %
105Ahrefs Linked Root Domains   Authority-0.1528760 %19 %
106Ahrefs Word Count   Size-0.153065100449 %13 %
107Number of Questions In H3 Tags   Size-0.154114 %78 %
108Entities in the HTML Tag   Relevancy-0.15150127455 %95 %
109Headings Has Question   Other-0.151133 %79 %
110TF/IDF   Relevancy-0.152172 %82 %
111Title Has Sales Words   Other-0.151116 %72 %
112Variations in Search Result Summary   Relevancy-0.1582377 %65 %
113LSI Words in Meta Description Tag   Relevancy-0.1533851 %89 %
114LSI Words in H1 Tags   Relevancy-0.1513456 %88 %
115Number of Heading Tags   Size-0.14472086 %87 %
116Ahrefs Internal Links   Authority-0.142976461 %20 %
117Ahrefs Has Internal Links   Authority-0.141156 %16 %
118Title Has Sentiment Words   Other-0.141116 %72 %
119Variations in TITLE Attributes   Relevancy-0.14465937 %88 %
120Leading Variations in H2 Tags   Relevancy-0.147123 %85 %
121Number of Absolute URLs   Authority-0.1449613188 %79 %
122Has Entities in H1 Tags   Relevancy-0.141164 %50 %
123Variations in H4-H6 Tags   Relevancy-0.1456224 %79 %
124Number of Nofollow Links   Authority-0.1447632 %83 %
125LSI Words in H3 Tags   Relevancy-0.14731245 %92 %
126Inline CSS Kilobytes   Size-0.14732357 %82 %
127Ahrefs Has Linked Root Domains   Authority-0.141157 %17 %
128Number of Questions In H2 Tags   Size-0.143119 %80 %
129Meta Description Tag Has Entities   Relevancy-0.141159 %45 %
130Head Size Kilobytes   Size-0.14913585 %78 %
131DomDetailer Majestic GOV Backlinks   Authority-0.1423785889279772941 %25 %
132Exact Matches in Title Tag   Relevancy-0.142124 %84 %
133Variations in Strong Tags   Relevancy-0.1499332 %82 %
134Leading Variations in H3 Tags   Relevancy-0.145117 %81 %
135Exact Matches in A Tags   Relevancy-0.1435222 %87 %
136Variations in ID Attributes   Relevancy-0.14386414 %79 %
137Leading Variations in H1 Tags   Relevancy-0.142130 %77 %
138Variations in H4 Tags   Relevancy-0.1421219 %82 %
139Variations in Section Tags   Relevancy-0.142731937 %81 %
140Variations making whole H1-H6 Tags   Relevancy-0.142118 %76 %
141Word Count in Meta Description   Size-0.14562167 %72 %
142Ahrefs External Links   Authority-0.13501358 %18 %
143Ahrefs Page Size   Size-0.13543271873750 %12 %
144Variations making whole H1, H2, and H3 Tags   Relevancy-0.132116 %75 %
145Load Time Milliseconds   Performance-0.1333863258691 %66 %
146Number of NoFollow External Links   Authority-0.1323323 %82 %
147Meta Description Length   Size-0.1335912767 %70 %
148Has JSON-LD Answer-0.13113 %54 %
149Number of US Phone Numbers   Trust-0.13105744 %78 %
150Variations making whole H1 Tags   Relevancy-0.131111 %73 %
151Has JSON-LD Question-0.13114 %54 %
152Percentage of DoFollow Internal Links   Authority-0.13937786 %71 %
153Variations in B Tags   Relevancy-0.1369212 %78 %
154Ahrefs Has External Links   Authority-0.131156 %17 %
155Number of H2 Tags   Size-0.1315672 %83 %
156Has Entities in H2 Tags   Relevancy-0.131157 %51 %
157Ahrefs Pages   Size-0.124159 %16 %
158Has FavIcon   Technology-0.121174 %71 %
159Title Has Best   Other-0.12119 %80 %
160Percentage of NoFollow Links   Authority-0.1223431 %77 %
161Variations in Class Attributes   Relevancy-0.1270295629 %79 %
162Ahrefs Images   Relevancy-0.12701448 %13 %
163Variations in Value Attributes   Relevancy-0.12295314 %74 %
164Number of HREF Lang Tags   Size-0.121028 %75 %
165Variations in Article Tags   Relevancy-0.122322233 %77 %
166Exact Matches in H1 Tags   Relevancy-0.122118 %83 %
167Search Result Summary Length   Size-0.12112717588 %59 %
168Variations in Button Tags   Relevancy-0.1277376 %77 %
169Ahrefs Image Backlinks-0.1219818316 %17 %
170Title Tag Has Entities   Relevancy-0.121177 %45 %
171Has Privacy Policy   Trust-0.121160 %76 %
172Exact Matches in Sentences   Relevancy-0.1216222 %91 %
173Search Result Uses HTTPS   Other-0.121187 %65 %
174Number of External Links   Authority-0.12671783 %78 %
175Has Meta Description   Relevancy-0.121168 %69 %
176Percentage of NoFollow External Links   Authority-0.1219220 %77 %
177Search Result Number of Dirs in Path   Other-0.124275 %67 %
178Number of Facebook Accounts   Authority-0.124133 %71 %
179Leading Variations in H4-H6 Tags   Relevancy-0.126111 %73 %
180Variations in I Tags   Relevancy-0.12182321 %82 %
181Has JSON-LD ItemList-0.12112 %40 %
182Search Result Has Publish Date-0.121166 %13 %
183Search Result Link Text Length   Size-0.12925494 %63 %
184Number of Social Pages   Authority-0.129359 %68 %
185Number of Social Accounts   Authority-0.125251 %73 %
186Has JSON-LD LegalService-0.11117 %13 %
187Ahrefs Has Domain Rating   Authority-0.111162 %13 %
188Exact Matches in H2 Tags   Relevancy-0.113112 %87 %
189Ahrefs Has Image Backlinks   Authority-0.111116 %16 %
190LSI Words in H4 Tags   Relevancy-0.1126528 %84 %
191Variations in Meta Twitter Content   Relevancy-0.115123 %67 %
192Has Apple Touch Icon   Technology-0.111145 %61 %
193Number of DoFollow External Links   Authority-0.11651581 %71 %
194Entities in H5 Tags-0.116110 %41 %
195Has JSON-LD AggregateRating-0.11115 %54 %
196Number of Twitter Accounts   Authority-0.113144 %71 %
197Search Result URL Length   Size-0.11896094 %50 %
198Leading Variations in H4 Tags   Relevancy-0.11318 %72 %
199Has MicroData name-0.111116 %62 %
200Variations in Figure Tags   Relevancy-0.119951012 %78 %