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 2020-6     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-0.34633392 %44 %
2Variations in HTML Tags   Relevancy-0.2783516690 %96 %
3Number of Factors Used   Diversity-0.2621213796 %92 %
4Term Frequency   Relevancy-0.268690 %94 %
5Variations in H1-H6 Tags   Relevancy-0.2630882 %93 %
6Variations in Div Tags   Relevancy-0.2559111989 %95 %
7Variations in Body Tags   Relevancy-0.2556314584 %95 %
8Variations in A Tags   Relevancy-0.251762982 %93 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2525781 %92 %
10LSI Words in Sentences   Relevancy-0.24420153579 %90 %
11Entities in H2 Tags-0.2330762 %43 %
12Variations in P Tags   Relevancy-0.231663280 %91 %
13Ahrefs Rank   Authority-0.23371580 %14 %
14Variations in A Tag HREF Attributes   Relevancy-0.233415277 %95 %
15Variations in H1 and H2 Tags   Relevancy-0.2313478 %90 %
16Ahrefs Referring Domains   Authority-0.2225456754 %19 %
17Ahrefs Referring Class C Addresses   Authority-0.2210504354 %19 %
18Ahrefs Referring IP Addresses   Authority-0.2216095454 %19 %
19Entities in H3 Tags-0.2239753 %43 %
20Variations in LI Tags   Relevancy-0.22812075 %93 %
21Variations in Sentences   Relevancy-0.22821879 %89 %
22Variations in H2 Tags   Relevancy-0.2112351 %89 %
23Exact Matches in Body Tag   Relevancy-0.212101543 %92 %
24Leading Variations in H1-H6 Tags   Relevancy-0.2124255 %89 %
25Exact Matches in the HTML Tag   Relevancy-0.212201044 %92 %
26Ahrefs Text Backlinks   Authority-0.21638685816053 %19 %
27Ahrefs NoFollow Backlinks   Authority-0.21773222345 %19 %
28Ahrefs Backlinks   Authority-0.21638698812654 %19 %
29Ahrefs Referring Pages   Authority-0.21638698812654 %19 %
30Variations in Search Result Display URL   Relevancy-0.23286 %78 %
31Leading Variations in H1, H2, and H3 Tags   Relevancy-0.220252 %89 %
32Unabridged Word Count   Size-0.28417179195 %87 %
33Word Count   Size-0.26325143595 %86 %
34Clean Text Kilobytes   Size-0.2471193 %86 %
35Variations in Search Result Link Text   Relevancy-0.23286 %78 %
36Page Size Kilobytes   Size-0.235312696 %86 %
37Ahrefs Dofollow Backlinks   Authority-0.2637067809246 %18 %
38Body Tag Size Kilobytes   Size-0.22337785 %87 %
39Number of HTML Tags   Size-0.2319785096 %87 %
40Keywords in pages top 10 most used phrases-0.195271 %84 %
41Variations in Script Tags   Relevancy-0.193092863 %91 %
42Entities in Title Tag   Relevancy-0.198486 %42 %
43Exact Matches in H1-H6 Tags   Relevancy-0.1918233 %87 %
44Variations in Search Result URL   Relevancy-0.194266 %78 %
45Number of HTTPS Links   Authority-0.1952214490 %85 %
46Variations in Search Result URL Path   Relevancy-0.194265 %75 %
47Number of P Tags   Size-0.192653990 %83 %
48Variations in the Title Tag   Relevancy-0.194281 %77 %
49DomDetailer Majestic Referring Subnets   Authority-0.19552501281584 %19 %
50Variations in Absolute URLs   Relevancy-0.192754970 %90 %
51Number of Sentences   Size-0.192254392 %84 %
52DomDetailer Majestic IPs   Authority-0.192744724516584 %19 %
53Number of Heading Tags   Size-0.19522192 %86 %
54Variations in ALT Attributes   Relevancy-0.1955754 %90 %
55Variations in Search Result Document File Name   Relevancy-0.184265 %67 %
56Keywords in pages top 5 most used phrases-0.183263 %86 %
57DomDetailer Moz PA   Authority-0.18694085 %18 %
58Variations in H3 Tags   Relevancy-0.1815339 %89 %
59Number of Questions In Headings   Size-0.187238 %82 %
60DomDetailer Majestic Referring Domains   Authority-0.18167538624069884 %20 %
61Variations in Nav Tags   Relevancy-0.181662249 %89 %
62Entities in H4 Tags-0.1811331 %42 %
63Ahrefs Domain Rating   Authority-0.18804177 %13 %
64Variations in Meta Description   Relevancy-0.186261 %86 %
65Number of Links   Authority-0.1854415492 %84 %
66DomDetailer Majestic CF   Authority-0.18673483 %19 %
67Number of DoFollow Links   Authority-0.1853814892 %83 %
68LSI Words in H2 Tags   Relevancy-0.18851559 %87 %
69Number of Internal Links   Authority-0.1849813692 %84 %
70Ahrefs Has NoFollow Backlinks   Authority-0.181146 %18 %
71Leading Variations in Title Tag   Relevancy-0.171141 %75 %
72Variations in the Canonical URL   Relevancy-0.174252 %81 %
73Entities in Meta Description Tag   Relevancy-0.179468 %41 %
74Number of Questions   Size-0.1732666 %80 %
75LSI Words in Title Tag   Relevancy-0.1717675 %83 %
76Keywords in pages top 3 most used phrases-0.173154 %84 %
77Variations in First 100 Words   Relevancy-0.1724872 %81 %
78DomDetailer Moz DA   Authority-0.17854084 %18 %
79Entities in Sentences   Relevancy-0.176579253 %81 %
80Variations in Span Tags   Relevancy-0.17124959 %91 %
81TF/IDF   Relevancy-0.171172 %77 %
82Leading Variations in H1 Tags   Relevancy-0.172135 %79 %
83Ahrefs Word Count   Size-0.174089119560 %13 %
84Search Result Publish Date-0.172007303444190622514292 %40 %
85Ahrefs Has Dofollow Backlinks   Authority-0.171146 %18 %
86DomDetailer Majestic Links   Authority-0.17154440619706405784 %19 %
87Variations in H1 Tags   Relevancy-0.173269 %80 %
88Ahrefs Has Backlinks   Authority-0.171155 %18 %
89DomDetailer Facebook Shares   Authority-0.1767712922928438678 %19 %
90Number of Images with ALT Text   Size-0.16721884 %85 %
91Exact Matches in A Tags   Relevancy-0.1645329 %87 %
92DomDetailer Majestic TF   Authority-0.16632778 %18 %
93Ahrefs Has Text Backlinks   Authority-0.161154 %18 %
94Number of Absolute URLs   Authority-0.1652314094 %81 %
95Exact Matches in Title Tag   Relevancy-0.162131 %78 %
96Number of Images   Size-0.16892891 %83 %
97DomDetailer Moz Rank   Authority-0.169583 %17 %
98Entities in the HTML Tag   Relevancy-0.16176228353 %80 %
99Headings Has Question   Other-0.161138 %77 %
100Number of H2 Tags   Size-0.1620776 %85 %
101Number of H3 Tags   Size-0.1622869 %83 %
102LSI Words in H3 Tags   Relevancy-0.161191553 %86 %
103Entities in H1 Tags-0.167373 %40 %
104LSI Words in Meta Description Tag   Relevancy-0.1642959 %86 %
105DomDetailer Moz Links   Authority-0.161015300691465015184 %19 %
106Title Has Sales Words   Other-0.161117 %68 %
107Variations in OpenGraph Description   Relevancy-0.164248 %83 %
108Variations in TITLE Attributes   Relevancy-0.1670840 %85 %
109Title Has Sentiment Words   Other-0.151118 %69 %
110Variations making whole A Tags   Relevancy-0.156236 %86 %
111Variations in OpenGraph Title   Relevancy-0.154154 %76 %
112Variations in Footer Tags   Relevancy-0.1554638 %84 %
113Number of Questions In H2 Tags   Size-0.153121 %77 %
114Variations in H4-H6 Tags   Relevancy-0.159224 %86 %
115Inline JavaScript Kilobytes   Size-0.15972590 %82 %
116Leading Variations in H2 Tags   Relevancy-0.1510124 %85 %
117Variations making whole H1-H6 Tags   Relevancy-0.152121 %78 %
118Variations Making Whole Span Tags   Relevancy-0.15123121 %83 %
119Variations in Strong Tags   Relevancy-0.1514335 %80 %
120Has Entities in H2 Tags   Relevancy-0.151164 %39 %
121Has Entities in H1 Tags   Relevancy-0.151174 %35 %
122Number of Questions In H3 Tags   Size-0.154116 %78 %
123Variations in Search Result Summary   Relevancy-0.155266 %70 %
124Variations in the last 100 words   Relevancy-0.1513461 %81 %
125Variations Making Whole LI Tags   Relevancy-0.155129 %82 %
126Exact Matches in H2 Tags   Relevancy-0.156116 %86 %
127Variations making whole H1, H2, and H3 Tags   Relevancy-0.152119 %78 %
128Ahrefs Internal Links   Authority-0.153037363 %18 %
129Has Entities in H3 Tags   Relevancy-0.151155 %38 %
130Variations in H4 Tags   Relevancy-0.159219 %85 %
131Title Tag Has Entities   Relevancy-0.151184 %31 %
132Ahrefs Image Backlinks-0.147414479020 %17 %
133Search Result Uses HTTPS   Other-0.141187 %75 %
134Head Size Kilobytes   Size-0.141543190 %82 %
135Exact Matches in Sentences   Relevancy-0.1431225 %89 %
136Variations in Section Tags   Relevancy-0.14721538 %86 %
137Inline CSS Kilobytes   Size-0.141612154 %81 %
138Leading Variations in H3 Tags   Relevancy-0.1411117 %82 %
139Ahrefs Linked Root Domains   Authority-0.1417763 %18 %
140Variations in Main Tags   Relevancy-0.142733827 %84 %
141LSI Words in H1 Tags   Relevancy-0.1415566 %81 %
142Search Result Summary Length   Size-0.1436520789 %68 %
143Variations in Article Tags   Relevancy-0.141531932 %78 %
144Has JSON-LD Question-0.14113 %48 %
145Has JSON-LD Answer-0.14113 %49 %
146Number of Nofollow Links   Authority-0.1441737 %79 %
147Number of External Links   Authority-0.143931886 %77 %
148Ahrefs External Links   Authority-0.14591659 %17 %
149Exact Matches in H1 Tags   Relevancy-0.132124 %80 %
150Percentage of DoFollow Internal Links   Authority-0.13938191 %66 %
151Load Time Milliseconds   Performance-0.1325544244196 %64 %
152Ahrefs Images   Relevancy-0.13761757 %14 %
153Keywords in pages most used phrase-0.131128 %75 %
154Variations making whole H1 Tags   Relevancy-0.131113 %77 %
155Ahrefs Has Image Backlinks   Authority-0.131120 %16 %
156DomDetailer Majestic GOV Backlinks   Authority-0.1327599312262491336 %18 %
157Has Canonical URL   Authority-0.131174 %72 %
158Variations in I Tags   Relevancy-0.1319223 %84 %
159Meta Description Tag Has Entities   Relevancy-0.131168 %37 %
160Leading Variations in H4-H6 Tags   Relevancy-0.138111 %77 %
161Number of NoFollow External Links   Authority-0.1322325 %78 %
162Word Count in Meta Description   Size-0.13702171 %77 %
163Number of DoFollow External Links   Authority-0.133891684 %75 %
164Meta Description Length   Size-0.1341412671 %77 %
165Variations in ID Attributes   Relevancy-0.1323113 %81 %
166Ahrefs Page Size   Size-0.13435732103561 %13 %
167LSI Words in H4 Tags   Relevancy-0.1347734 %83 %
168Number of H4 Tags   Size-0.1315547 %81 %
169Exact Matches in Meta Description   Relevancy-0.122118 %84 %
170Has Entities in H4 Tags   Relevancy-0.121133 %37 %
171Variations in Meta Twitter Content   Relevancy-0.122125 %71 %
172Variations in Meta Twitter Description   Relevancy-0.124123 %76 %
173Percentage of NoFollow Links   Authority-0.1219435 %73 %
174Ahrefs Has Linked Root Domains   Authority-0.121160 %16 %
175Ahrefs EDU Backlinks   Authority-0.12280572369 %15 %
176Number of US Phone Numbers   Trust-0.1257640 %74 %
177Ahrefs Redirects   Authority-0.12350911 %17 %
178Ahrefs Pages   Size-0.124264 %16 %
179Percentage of DoFollow Links   Authority-0.121009391 %63 %
180Has JSON-LD WebPage-0.121132 %61 %
181Number of Forms   Technology-0.1212371 %68 %
182Number of HREF Lang Tags   Size-0.1216211 %77 %
183Ahrefs Has Internal Links   Authority-0.121160 %16 %
184Has Meta Description   Relevancy-0.121172 %74 %
185Number of Instagram Pages   Authority-0.1212129 %69 %
186Variations in Search Result URL Domain Name   Relevancy-0.12216 %46 %
187Leading Variations in H4 Tags   Relevancy-0.12418 %76 %
188Flesch Kincaid Reading Grade Level   Other-0.126388 %61 %
189Percentage of NoFollow Internal Links   Authority-0.1211324 %69 %
190Ahrefs Has EDU Backlinks   Authority-0.12119 %14 %
191Variations in Class Attributes   Relevancy-0.12107628 %84 %
192Has JSON-LD Person-0.121112 %61 %
193Entities in H5 Tags-0.127111 %34 %
194Variations Making Whole Strong Tags   Relevancy-0.12317 %75 %
195Variations in Value Attributes   Relevancy-0.1215213 %73 %
196Leading Variations in Meta Description   Relevancy-0.121112 %68 %
197Number of H5 Tags   Size-0.1210220 %70 %
198Has Privacy Policy   Trust-0.121159 %74 %
199Has JSON-LD Organization-0.121128 %66 %
200Ahrefs Has External Links   Authority-0.111158 %16 %