Measures 143029 SEO Factors

141307 Built-In SEO Factors

132239 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 2025-08     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.25134929579 %79 %
2Load Time Milliseconds   Performance-0.2438092201981 %94 %
3Search Result Domain is .com, .net, or .org   Other-0.24115 %80 %
4Number of Unique Variations Used   Diversity-0.2428775 %88 %
5Number of Top 100 Shared Factors Used   Diversity-0.24402995 %91 %
6Number of Top 200 Shared Factors Used   Diversity-0.23533995 %91 %
7Search Result Domain is .com   Other-0.23115 %80 %
8Number of Top 50 Shared Factors Used   Diversity-0.23181293 %90 %
9Number of Distinct Entities Used   Diversity-0.23672873 %92 %
10Variations in Body Tags   Relevancy-0.226149026674 %89 %
11Entities in Title Tag   Relevancy-0.2217364 %89 %
12Variations in HTML Tags   Relevancy-0.226149026273 %91 %
13Variations in Div Tags   Relevancy-0.211921812470 %91 %
14Variations in P Tags   Relevancy-0.2113463265 %89 %
15Variations in Sentences   Relevancy-0.2117123467 %89 %
16Variations in H1-H6 Tags   Relevancy-0.21158864 %87 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.21115764 %86 %
18Number of Referring Domains   Authority-0.2195398645 %73 %
19Number of Factors Used   Diversity-0.2156218295 %87 %
20Variations in H1 and H2 Tags   Relevancy-0.253462 %86 %
21Term Frequency   Relevancy-0.25373 %89 %
22Number of Includes   Technology-0.2582575 %79 %
23Number of Backlinks   Authority-0.2823560510245 %73 %
24Number of Do Follow Backlinks   Authority-0.2769488431041 %72 %
25Entities in Sentences   Relevancy-0.267714167 %94 %
26Entities in the HTML Tag   Relevancy-0.267914468 %94 %
27Variations in LI Tags   Relevancy-0.28212164 %87 %
28Variations in Search Result Link Text   Relevancy-0.1911276 %77 %
29Variations in Search Result Display URL   Relevancy-0.1911276 %78 %
30Variations in the Title Tag   Relevancy-0.1910262 %83 %
31Variations in Search Result Document File Name   Relevancy-0.194147 %79 %
32Variations in A Tags   Relevancy-0.1926952464 %85 %
33Clean Keyword Density in the HTML Tag   Relevancy-0.19153366 %81 %
34Number of CSS Includes   Technology-0.1925968 %76 %
35Variations in H1 Tags   Relevancy-0.199154 %80 %
36Variations in Search Result URL Path   Relevancy-0.194149 %80 %
37Number of Facebook Pages   Authority-0.1922258 %79 %
38Leading Variations in H1-H6 Tags   Relevancy-0.1914245 %85 %
39Exact Matches in the HTML Tag   Relevancy-0.185541130 %86 %
40Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811243 %85 %
41Number of No Follow Backlinks   Authority-0.1812484481433 %69 %
42Entities in H2 Tags-0.1837751 %89 %
43LSI Words in Sentences   Relevancy-0.18649175665 %93 %
44Variations in Meta Description   Relevancy-0.1827252 %82 %
45LSI Words in Title Tag   Relevancy-0.1832663 %92 %
46Variation Count in Top 30KB   Relevancy-0.1839902364 %83 %
47Variations in Distinct A Tag HREF Attributes   Relevancy-0.1810302760 %87 %
48Variations in A Tag HREF Attributes   Relevancy-0.1813904360 %86 %
49Variations in First 100 Words   Relevancy-0.18143662 %81 %
50Entities in H1 Tags-0.1816253 %85 %
51Variations in H2 Tags   Relevancy-0.1845346 %86 %
52Number of HTML Tags   Size-0.184986109881 %86 %
53Variations in OpenGraph Title   Relevancy-0.187151 %77 %
54Has JSON-LD Schema Markup   Relevancy-0.181153 %76 %
55Search Result Number of Dirs in Path   Other-0.184271 %78 %
56Entities in Meta Description Tag   Relevancy-0.1820354 %86 %
57Variations in Script Tags   Relevancy-0.18178087659 %88 %
58Variation Density in Top 30KB   Relevancy-0.18246258 %82 %
59Variations in the Canonical URL   Relevancy-0.1826250 %81 %
60Word Count   Size-0.189175156381 %86 %
61Unabridged Word Count   Size-0.1811084195681 %86 %
62TF/IDF   Relevancy-0.171157 %83 %
63Clean Text Kilobytes   Size-0.17811376 %87 %
64Number of Sentences   Size-0.1769313179 %85 %
65Variations in Span Tags   Relevancy-0.17436949 %88 %
66Variations in Main Tags   Relevancy-0.17122566936 %85 %
67Number of Images   Size-0.174093476 %85 %
68Page Size Kilobytes   Size-0.1797627480 %84 %
69Variations in Search Result URL   Relevancy-0.1714259 %75 %
70Variations in ALT Attributes   Relevancy-0.17178743 %83 %
71Number of Images with ALT Text   Size-0.173982472 %86 %
72Number of P Tags   Size-0.172514176 %84 %
73Entities in H3 Tags-0.1776743 %89 %
74Variations in OpenGraph Description   Relevancy-0.1728247 %79 %
75Variations in Absolute URLs   Relevancy-0.1741096161 %88 %
76Number of HTTPS Links   Authority-0.1763515078 %83 %
77Number of Links   Authority-0.1766315278 %82 %
78Number of DoFollow Links   Authority-0.1751014777 %83 %
79Number of Instagram Pages   Authority-0.1711242 %80 %
80Number of Internal Links   Authority-0.1753713577 %82 %
81Percentage of DoFollow Links   Authority-0.161008378 %88 %
82Number of LinkedIn Pages   Authority-0.1612133 %76 %
83Leading Variations in Title Tag   Relevancy-0.161131 %81 %
84Leading Variations in H1 Tags   Relevancy-0.162128 %81 %
85Title Tag Has Entities   Relevancy-0.161164 %83 %
86Percentage of DoFollow Internal Links   Authority-0.16917277 %82 %
87Number of External Links   Authority-0.161681774 %82 %
88LSI Words in H1 Tags   Relevancy-0.1618555 %88 %
89Number of DoFollow External Links   Authority-0.161661572 %82 %
90Inline JavaScript Kilobytes   Size-0.164838077 %82 %
91Number of Heading Tags   Size-0.162732376 %84 %
92Number of Questions   Size-0.16551265 %83 %
93Has Entities in H1 Tags   Relevancy-0.161155 %82 %
94Variations in Nav Tags   Relevancy-0.1634002545 %83 %
95Exact Matches in H1-H6 Tags   Relevancy-0.1611121 %81 %
96LSI Words in Meta Description Tag   Relevancy-0.16431053 %89 %
97Flesch Kincaid Reading Grade Level   Other-0.167291 %85 %
98Number of JavaScript Includes   Technology-0.16441777 %79 %
99Number of Absolute URLs   Authority-0.16139527180 %83 %
100Variations in H3 Tags   Relevancy-0.16110334 %82 %
101Number of H1 Tags   Size-0.1620271 %81 %
102Number of H2 Tags   Size-0.1517869 %83 %
103Number of Prices   Size-0.157687065 %84 %
104Search Result Uses HTTPS   Other-0.151180 %85 %
105LSI Words in H2 Tags   Relevancy-0.15862255 %91 %
106Inline CSS Kilobytes   Size-0.151786362 %85 %
107Average Words Per Sentence   Size-0.154013278 %75 %
108Number of Twitter Accounts   Authority-0.155128 %69 %
109Search Result Host Length   Size-0.15251680 %77 %
110Search Result Domain Length   Size-0.15251680 %78 %
111Number of US Phone Numbers   Trust-0.155181241 %81 %
112Exact Matches in Sentences   Relevancy-0.1561322 %86 %
113Variations in Section Tags   Relevancy-0.155611837 %84 %
114Number of Images without ALT Text   Size-0.151001158 %81 %
115Has Meta Viewport   Technology-0.151178 %80 %
116Number of Forms   Technology-0.1511254 %75 %
117Number of Social Pages   Authority-0.1541464 %79 %
118Exact Matches in Top 30KB   Relevancy-0.1521219 %79 %
119Number of Questions In Headings   Size-0.1516238 %82 %
120Has Privacy Policy   Trust-0.151156 %74 %
121Number Of JSON-LD Types   Relevancy-0.151321556 %79 %
122Number of HTML Comments   Size-0.155315072 %81 %
123Exact Matches in Title Tag   Relevancy-0.152118 %80 %
124Number of H3 Tags   Size-0.15150961 %82 %
125Variations in Footer Tags   Relevancy-0.151638834 %81 %
126Has Canonical URL   Authority-0.141169 %76 %
127Title Word Count   Size-0.1434878 %72 %
128Variations making whole H1-H6 Tags   Relevancy-0.143117 %78 %
129Variations Making Whole Span Tags   Relevancy-0.149120 %81 %
130Percentage of DoFollow External Links   Authority-0.14531271 %80 %
131Number of Facebook Accounts   Authority-0.143128 %74 %
132Has Entities in H2 Tags   Relevancy-0.141152 %82 %
133Title Length   Size-0.142374978 %73 %
134Has Contact Page   Trust-0.141161 %69 %
135Word Count in Meta Description   Size-0.14871964 %76 %
136Meta Description Tag Has Entities   Relevancy-0.141155 %76 %
137Variations making whole H1, H2, and H3 Tags   Relevancy-0.142115 %78 %
138Has Meta Charset   Technology-0.141173 %75 %
139Headings Has Question   Other-0.141138 %76 %
140Has Terms of Service   Trust-0.141137 %70 %
141Leading Variations in H2 Tags   Relevancy-0.148122 %82 %
142Meta Description Length   Size-0.1457311865 %77 %
143Uses JSON-LD name   Other-0.141151 %73 %
144Has FavIcon   Technology-0.141172 %76 %
145Variations in Meta Twitter Description   Relevancy-0.147121 %73 %
146Has Form   Technology-0.141153 %71 %
147Variations in Meta Twitter Content   Relevancy-0.143123 %70 %
148Number of Email Addresses   Trust-0.14138442 %76 %
149Is Purchase Page   Other-0.141142 %69 %
150Has Schema Markup   Relevancy-0.141161 %72 %
151Variations in TITLE Attributes   Relevancy-0.14676632 %82 %
152Entities in H4 Tags-0.14106220 %83 %
153Variations in the last 100 words   Relevancy-0.14142343 %79 %
154Exact Matches in H1 Tags   Relevancy-0.141115 %77 %
155Has Meta Description   Relevancy-0.141163 %73 %
156Variations making whole A Tags   Relevancy-0.1418129 %76 %
157LSI Words in H3 Tags   Relevancy-0.146632148 %88 %
158Uses Schema name   Other-0.141160 %61 %
159Variations in Strong Tags   Relevancy-0.1325226 %79 %
160Has US Phone Number   Trust-0.131142 %71 %
161Has OpenGraph Type   Relevancy-0.131159 %70 %
162Variations Making Whole LI Tags   Relevancy-0.138125 %77 %
163Number of Social Accounts   Authority-0.1312246 %76 %
164Number of Questions In H2 Tags   Size-0.135125 %78 %
165Is Store Page   Other-0.131142 %63 %
166Has Entities in H3 Tags   Relevancy-0.131143 %79 %
167Has OpenGraph Image   Relevancy-0.131151 %70 %
168Number of Questions In H3 Tags   Size-0.1312118 %75 %
169Number of H4 Tags   Size-0.13110436 %75 %
170Number of Nofollow Links   Authority-0.13189525 %76 %
171Leading Variations in H3 Tags   Relevancy-0.135116 %77 %
172Search Result URL Length   Size-0.13966395 %53 %
173Has Copyright   Trust-0.131159 %71 %
174Is Home Page   Other-0.131116 %40 %
175Has Email   Trust-0.131142 %67 %
176Has Meta Twitter Card   Authority-0.131150 %64 %
177Variations making whole H1 Tags   Relevancy-0.131110 %77 %
178Uses JSON-LD url   Other-0.131146 %70 %
179Variations in I Tags   Relevancy-0.13198422 %77 %
180Exact Matches in A Tags   Relevancy-0.1256216 %82 %
181Variations in H4-H6 Tags   Relevancy-0.1243217 %77 %
182Has HREF Lang   Technology-0.121114 %66 %
183Number Of Claimed Brands   Other-0.1245225 %71 %
184Variations in ID Attributes   Relevancy-0.12432212 %81 %
185Uses Schema url   Other-0.121155 %59 %
186Has Meta Twitter Description   Authority-0.121127 %62 %
187Number of HREF Lang Tags   Size-0.1222213 %72 %
188Has Meta Twitter Title   Authority-0.121128 %61 %
189Variations in Button Tags   Relevancy-0.1295638 %79 %
190Variations in Article Tags   Relevancy-0.123811324 %73 %
191Number of H5 Tags   Size-0.1225217 %73 %
192Variations in Search Result Summary   Relevancy-0.1246274 %56 %
193Uses JSON-LD image   Other-0.121116 %67 %
194Uses Schema itemlist   Other-0.12114 %37 %
195Has Meta Twitter Site   Authority-0.121120 %62 %
196Uses JSON-LD price   Other-0.12114 %36 %
197Has Google Verify   Technology-0.121121 %64 %
198Uses Schema listitem   Other-0.121141 %57 %
199Variations in H4 Tags   Relevancy-0.1216113 %76 %
200Uses JSON-LD description   Other-0.121141 %66 %