Measures 149778 SEO Factors

148056 Built-In SEO Factors

138879 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 2020-8     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-0.28662784 %35 %
2Variations in HTML Tags   Relevancy-0.252929522890 %96 %
3Variations in Div Tags   Relevancy-0.241907916289 %95 %
4Search Result Publish Date-0.242003835427172587189682 %30 %
5Variations in Body Tags   Relevancy-0.242804720885 %96 %
6Term Frequency   Relevancy-0.2411691 %96 %
7Number of Factors Used   Diversity-0.2319513395 %92 %
8Variations in H1-H6 Tags   Relevancy-0.232381283 %94 %
9Variations in Search Result Display URL   Relevancy-0.238288 %79 %
10Variations in Search Result Link Text   Relevancy-0.238288 %79 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.221931081 %93 %
12Exact Matches in Body Tag   Relevancy-0.222091749 %92 %
13Variations in A Tags   Relevancy-0.2232844584 %96 %
14Exact Matches in the HTML Tag   Relevancy-0.222471450 %93 %
15Variations in A Tag HREF Attributes   Relevancy-0.2219525276 %94 %
16Variations in H1 and H2 Tags   Relevancy-0.2166678 %91 %
17Variations in P Tags   Relevancy-0.2139704779 %92 %
18Variations in the Title Tag   Relevancy-0.2114283 %81 %
19Variations in Search Result URL Path   Relevancy-0.215268 %76 %
20Variations in LI Tags   Relevancy-0.211102977 %95 %
21Entities in Title Tag   Relevancy-0.27372 %32 %
22Leading Variations in H1, H2, and H3 Tags   Relevancy-0.236355 %90 %
23Leading Variations in H1-H6 Tags   Relevancy-0.237458 %91 %
24Ahrefs Rank   Authority-0.2401477 %15 %
25Variations in Search Result URL   Relevancy-0.26265 %81 %
26Ahrefs Referring Domains   Authority-0.2264210443 %16 %
27Ahrefs Referring Class C Addresses   Authority-0.212135743 %17 %
28Ahrefs Referring IP Addresses   Authority-0.218887943 %17 %
29Variations in Sentences   Relevancy-0.1926082878 %91 %
30Keywords in pages top 10 most used phrases-0.196269 %88 %
31LSI Words in Sentences   Relevancy-0.19411378977 %94 %
32Variations in ALT Attributes   Relevancy-0.192731262 %89 %
33Variations in H2 Tags   Relevancy-0.1955453 %93 %
34Exact Matches in H1-H6 Tags   Relevancy-0.1915239 %91 %
35Ahrefs Text Backlinks   Authority-0.197031961472543 %16 %
36Ahrefs Backlinks   Authority-0.197035341477543 %16 %
37Ahrefs Referring Pages   Authority-0.197035341477543 %16 %
38Variations in Span Tags   Relevancy-0.1910211966 %92 %
39Variations in Search Result Document File Name   Relevancy-0.195264 %72 %
40Variations in First 100 Words   Relevancy-0.19187973 %82 %
41Page Size Kilobytes   Size-0.1930513495 %89 %
42Variations in Absolute URLs   Relevancy-0.1940385670 %92 %
43Ahrefs NoFollow Backlinks   Authority-0.194863461836 %16 %
44Body Tag Size Kilobytes   Size-0.182138085 %89 %
45Word Count   Size-0.186210151494 %85 %
46Entities in H2 Tags-0.1829652 %35 %
47Variations in Script Tags   Relevancy-0.1877373762 %93 %
48Exact Matches in A Tags   Relevancy-0.1853435 %90 %
49Unabridged Word Count   Size-0.188182191294 %85 %
50Ahrefs Dofollow Backlinks   Authority-0.187024341443136 %16 %
51Variations in Meta Description   Relevancy-0.1836364 %87 %
52Keywords in pages top 5 most used phrases-0.184156 %88 %
53Clean Text Kilobytes   Size-0.18441192 %84 %
54Leading Variations in Title Tag   Relevancy-0.181142 %77 %
55Variations in H1 Tags   Relevancy-0.1812269 %81 %
56Entities in H3 Tags-0.1724643 %34 %
57Variations in the Canonical URL   Relevancy-0.1712253 %83 %
58Exact Matches in Title Tag   Relevancy-0.173136 %85 %
59LSI Words in Title Tag   Relevancy-0.1727774 %90 %
60Number of HTML Tags   Size-0.17218387196 %86 %
61Leading Variations in H1 Tags   Relevancy-0.174136 %80 %
62Variations in Strong Tags   Relevancy-0.17113645 %86 %
63TF/IDF   Relevancy-0.171175 %82 %
64Variations in H3 Tags   Relevancy-0.17127544 %92 %
65Keywords in pages top 3 most used phrases-0.173144 %86 %
66Number of Sentences   Size-0.172194292 %83 %
67Ahrefs Has Text Backlinks   Authority-0.161142 %16 %
68Number of HTTPS Links   Authority-0.1646214189 %84 %
69Ahrefs Has Dofollow Backlinks   Authority-0.161136 %16 %
70Variations in the last 100 words   Relevancy-0.16190561 %82 %
71Number of Images   Size-0.162003490 %83 %
72Number of Images with ALT Text   Size-0.161562284 %86 %
73Ahrefs Has Backlinks   Authority-0.161143 %16 %
74Ahrefs Has NoFollow Backlinks   Authority-0.161136 %16 %
75Number of P Tags   Size-0.162674289 %84 %
76Entities in Meta Description Tag   Relevancy-0.168357 %32 %
77Entities in H1 Tags-0.166259 %30 %
78Variations in OpenGraph Description   Relevancy-0.1644253 %82 %
79Number of Heading Tags   Size-0.16602292 %83 %
80Variations in OpenGraph Title   Relevancy-0.1610258 %77 %
81Variations in TITLE Attributes   Relevancy-0.164661550 %86 %
82Exact Matches in Sentences   Relevancy-0.1634228 %90 %
83Variations in Section Tags   Relevancy-0.1510322435 %88 %
84Ahrefs Domain Rating   Authority-0.15914972 %14 %
85Head Size Kilobytes   Size-0.151013389 %84 %
86Variations making whole A Tags   Relevancy-0.157236 %85 %
87Leading Variations in H2 Tags   Relevancy-0.1525127 %88 %
88Search Result Uses HTTPS   Other-0.151184 %79 %
89Variations in Search Result Summary   Relevancy-0.157261 %76 %
90Exact Matches in H2 Tags   Relevancy-0.156119 %89 %
91Variations in Nav Tags   Relevancy-0.151211644 %89 %
92Number of H2 Tags   Size-0.1533674 %85 %
93Inline JavaScript Kilobytes   Size-0.151662990 %86 %
94Number of Links   Authority-0.1546715792 %81 %
95Variations Making Whole LI Tags   Relevancy-0.157128 %83 %
96Variations Making Whole Span Tags   Relevancy-0.1510121 %88 %
97LSI Words in H2 Tags   Relevancy-0.151892158 %92 %
98Number of Internal Links   Authority-0.1544614191 %83 %
99Number of DoFollow Links   Authority-0.1545714992 %80 %
100Number of Questions In Headings   Size-0.156235 %83 %
101Exact Matches in H1 Tags   Relevancy-0.153127 %84 %
102Leading Variations in H3 Tags   Relevancy-0.1513224 %84 %
103DomDetailer Majestic CF   Authority-0.14712663 %14 %
104Variations in I Tags   Relevancy-0.1440534 %85 %
105LSI Words in H1 Tags   Relevancy-0.1426663 %84 %
106Number of Absolute URLs   Authority-0.1452714593 %84 %
107Title Tag Has Entities   Relevancy-0.141172 %28 %
108DomDetailer Majestic IPs   Authority-0.142928574096965 %15 %
109DomDetailer Majestic Referring Subnets   Authority-0.14897341112065 %15 %
110Exact Matches in Meta Description   Relevancy-0.143123 %86 %
111Number of Questions   Size-0.1431664 %81 %
112Inline CSS Kilobytes   Size-0.141262457 %81 %
113Variations in Footer Tags   Relevancy-0.14602736 %84 %
114Search Result Summary Length   Size-0.1437718381 %71 %
115Search Result Number of Dirs in Path   Other-0.144285 %61 %
116Ahrefs Word Count   Size-0.144380103943 %15 %
117DomDetailer Moz PA   Authority-0.14702966 %15 %
118Number of External Links   Authority-0.14561785 %75 %
119DomDetailer Majestic Referring Domains   Authority-0.14197748922718665 %15 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.141114 %80 %
121LSI Words in Meta Description Tag   Relevancy-0.14551458 %89 %
122Entities in H4 Tags-0.1414223 %32 %
123Number of H3 Tags   Size-0.1432971 %84 %
124Variations making whole H1-H6 Tags   Relevancy-0.142116 %83 %
125Has Entities in H1 Tags   Relevancy-0.141161 %29 %
126Variations in Main Tags   Relevancy-0.1487705526 %85 %
127Number of Questions In H2 Tags   Size-0.143119 %81 %
128DomDetailer Moz DA   Authority-0.14832965 %14 %
129Load Time Milliseconds   Performance-0.1442821299795 %70 %
130Ahrefs Internal Links   Authority-0.147296448 %16 %
131Ahrefs External Links   Authority-0.131831544 %16 %
132LSI Words in H3 Tags   Relevancy-0.131792854 %90 %
133Ahrefs Image Backlinks-0.13110834212716 %15 %
134Variations Making Whole Strong Tags   Relevancy-0.134112 %79 %
135Variations in H4-H6 Tags   Relevancy-0.1346327 %84 %
136Variations in H4 Tags   Relevancy-0.1337222 %84 %
137Ahrefs Page Size   Size-0.13672441848945 %15 %
138DomDetailer Majestic TF   Authority-0.13691957 %14 %
139Headings Has Question   Other-0.131134 %76 %
140Number of DoFollow External Links   Authority-0.13501382 %73 %
141Ahrefs Linked Root Domains   Authority-0.1320647 %15 %
142Variations making whole H1 Tags   Relevancy-0.13119 %76 %
143Leading Variations in Meta Description   Relevancy-0.131119 %74 %
144Number of Nofollow Links   Authority-0.13160945 %78 %
145Variations in Article Tags   Relevancy-0.1340972831 %74 %
146Ahrefs Images   Relevancy-0.13761540 %14 %
147Meta Description Tag Has Entities   Relevancy-0.131157 %28 %
148Number of NoFollow External Links   Authority-0.1337429 %76 %
149DomDetailer Facebook Shares   Authority-0.1342478755918354259 %15 %
150Number of HREF Lang Tags   Size-0.1358212 %74 %
151DomDetailer Moz Rank   Authority-0.139363 %14 %
152Exact Matches in H3 Tags   Relevancy-0.129112 %87 %
153Variations in ID Attributes   Relevancy-0.12349214 %84 %
154Variations in Value Attributes   Relevancy-0.1251215 %78 %
155Has Entities in H3 Tags   Relevancy-0.121145 %31 %
156Variations in Meta Keywords   Relevancy-0.1220224 %75 %
157Word Count in Meta Description   Size-0.121092571 %78 %
158Variations in Class Attributes   Relevancy-0.1242181229 %82 %
159Meta Description Length   Size-0.1262613471 %78 %
160Has Entities in H2 Tags   Relevancy-0.121154 %31 %
161Variations in Em Tags   Relevancy-0.1217218 %75 %
162Ahrefs Pages   Size-0.124148 %15 %
163Variations in B Tags   Relevancy-0.1228317 %80 %
164Number of Social Accounts   Authority-0.123242 %71 %
165Ahrefs Has Image Backlinks   Authority-0.121116 %14 %
166Search Result Link Text Length   Size-0.121185495 %67 %
167Variations in Meta Twitter Description   Relevancy-0.1215224 %73 %
168Number of Forms   Technology-0.1214372 %75 %
169DomDetailer Moz Links   Authority-0.12952761931279128466 %15 %
170Flesch Kincaid Reading Grade Level   Other-0.127179 %64 %
171Percentage of NoFollow Links   Authority-0.1226643 %75 %
172Has Meta Description   Relevancy-0.121172 %74 %
173DomDetailer Majestic Links   Authority-0.12139949193153119765 %15 %
174Number of Facebook Accounts   Authority-0.122128 %66 %
175Variations in Meta Twitter Content   Relevancy-0.123125 %69 %
176Percentage of DoFollow Internal Links   Authority-0.12958190 %69 %
177Number of Images without ALT Text   Size-0.12451373 %74 %
178Title Word Count   Size-0.12211194 %61 %
179Variations in Form Tags   Relevancy-0.1244112 %76 %
180Number of Twitter Accounts   Authority-0.122131 %68 %
181Percentage of NoFollow External Links   Authority-0.1217328 %74 %
182Leading Variations in H4-H6 Tags   Relevancy-0.128114 %78 %
183Number of H4 Tags   Size-0.1217548 %78 %
184Number of Questions In H3 Tags   Size-0.125115 %77 %
185Variations in Search Result URL Domain Name   Relevancy-0.12115 %44 %
186Number of Email Addresses   Trust-0.1120244 %66 %
187Variations in Figure Tags   Relevancy-0.11146713 %77 %
188Ahrefs Has External Links   Authority-0.111143 %15 %
189Has Canonical URL   Authority-0.111173 %72 %
190Title Length   Size-0.111255893 %59 %
191Has JSON-LD Answer-0.11113 %47 %
192Number of Questions In H4 Tags   Size-0.11217 %66 %
193Ahrefs Has Images   Other-0.111140 %13 %
194Number of JavaScript Includes   Technology-0.11271387 %62 %
195Has FavIcon   Technology-0.111177 %67 %
196Has JSON-LD Question-0.11113 %47 %
197Number of US Phone Numbers   Trust-0.1193529 %76 %
198Ahrefs Has Linked Root Domains   Authority-0.111146 %15 %
199Percentage of NoFollow Internal Links   Authority-0.1120432 %70 %
200Has JSON-LD AggregateRating-0.11116 %66 %