Measures 150169 SEO Factors

148447 Built-In SEO Factors

139249 On-page SEO Factors

9198 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 2026-04     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-0.2489731979 %89 %
2Number of Top 50 Shared Factors Used   Diversity-0.23151292 %94 %
3Number of Top 100 Shared Factors Used   Diversity-0.23372893 %95 %
4Load Time Milliseconds   Performance-0.228900144381 %88 %
5Number of Top 200 Shared Factors Used   Diversity-0.22503794 %96 %
6Number of Unique Variations Used   Diversity-0.2220775 %89 %
7Variations in H1, H2, and H3 Tags   Relevancy-0.2114655 %88 %
8Variations in H1-H6 Tags   Relevancy-0.2120756 %88 %
9Search Result Domain is .com, .net, or .org   Other-0.21116 %81 %
10Variations in H1 and H2 Tags   Relevancy-0.219453 %90 %
11Variations in Body Tags   Relevancy-0.2177419972 %90 %
12Entities in Title Tag   Relevancy-0.217361 %94 %
13Variations in HTML Tags   Relevancy-0.2177419771 %92 %
14Number of Factors Used   Diversity-0.2125717393 %93 %
15Search Result Domain is .com   Other-0.21116 %80 %
16LSI Words in Sentences   Relevancy-0.2303386865 %96 %
17Number of Distinct Entities Used   Diversity-0.2532872 %96 %
18LSI Words in H1 Tags   Relevancy-0.214557 %94 %
19Leading Variations in H1-H6 Tags   Relevancy-0.25236 %87 %
20Variations in Search Result Display URL   Relevancy-0.23272 %80 %
21Variations in Search Result Link Text   Relevancy-0.23272 %80 %
22Variations in Div Tags   Relevancy-0.235210168 %93 %
23Variations in Search Result Document File Name   Relevancy-0.23139 %88 %
24Entities in H1 Tags-0.195249 %94 %
25Variations in P Tags   Relevancy-0.192002857 %94 %
26Variations in H1 Tags   Relevancy-0.193148 %87 %
27LSI Words in Title Tag   Relevancy-0.1914772 %94 %
28Term Frequency   Relevancy-0.194372 %90 %
29Leading Variations in H1, H2, and H3 Tags   Relevancy-0.194134 %87 %
30Word Count   Size-0.192908147481 %89 %
31Variations in LI Tags   Relevancy-0.19761857 %92 %
32Entities in Sentences   Relevancy-0.1944915362 %98 %
33Variation Count in Top 30KB   Relevancy-0.19811857 %85 %
34Variations in the Title Tag   Relevancy-0.193260 %87 %
35Entities in the HTML Tag   Relevancy-0.1945115767 %98 %
36Unabridged Word Count   Size-0.197281194081 %90 %
37Variations in Sentences   Relevancy-0.191723164 %92 %
38Entities in H2 Tags-0.1927846 %95 %
39Variations in A Tags   Relevancy-0.19742057 %89 %
40Number of HTML Tags   Size-0.192647102780 %85 %
41Variations in Search Result URL Path   Relevancy-0.183141 %86 %
42Variations in Meta Description   Relevancy-0.184250 %82 %
43Number of Images with ALT Text   Size-0.18772163 %87 %
44Variations in the Canonical URL   Relevancy-0.186242 %87 %
45Number of P Tags   Size-0.18933965 %89 %
46Clean Text Kilobytes   Size-0.18421366 %89 %
47Variations in ALT Attributes   Relevancy-0.1853741 %83 %
48Number of Heading Tags   Size-0.18512067 %87 %
49Number of HTTPS Links   Authority-0.1853214274 %89 %
50Number of Links   Authority-0.1853314374 %89 %
51Variations in Absolute URLs   Relevancy-0.182085151 %92 %
52Number of Internal Links   Authority-0.1852812972 %88 %
53Number of H2 Tags   Size-0.1813760 %91 %
54Number of DoFollow Links   Authority-0.1752414074 %89 %
55Variations in H2 Tags   Relevancy-0.178338 %89 %
56Leading Variations in Title Tag   Relevancy-0.171124 %82 %
57Variations in Span Tags   Relevancy-0.1724944 %86 %
58Variations in A Tag HREF Attributes   Relevancy-0.171573950 %93 %
59Variations in OpenGraph Title   Relevancy-0.172150 %78 %
60LSI Words in H2 Tags   Relevancy-0.17752455 %94 %
61Number of Images   Size-0.171032867 %89 %
62Variations in Distinct A Tag HREF Attributes   Relevancy-0.171162550 %92 %
63Clean Keyword Density in the HTML Tag   Relevancy-0.177364 %80 %
64TF/IDF   Relevancy-0.171151 %89 %
65Variations in OpenGraph Description   Relevancy-0.173243 %77 %
66Variations in Search Result URL   Relevancy-0.173147 %85 %
67Entities in Meta Description Tag   Relevancy-0.178354 %87 %
68Entities in H3 Tags-0.1728738 %95 %
69Variations in Main Tags   Relevancy-0.172735233 %87 %
70Variation Density in Top 30KB   Relevancy-0.167254 %83 %
71Number of H1 Tags   Size-0.162163 %91 %
72Variations in Script Tags   Relevancy-0.164775857 %82 %
73Number of DoFollow External Links   Authority-0.16291370 %85 %
74Number of Includes   Technology-0.16492677 %75 %
75Number of External Links   Authority-0.16301471 %87 %
76Exact Matches in the HTML Tag   Relevancy-0.161871331 %84 %
77Number of Forms   Technology-0.168249 %71 %
78Has JSON-LD Schema Markup   Relevancy-0.161149 %85 %
79LSI Words in Meta Description Tag   Relevancy-0.16231260 %90 %
80Leading Variations in H1 Tags   Relevancy-0.161121 %85 %
81Number of Referring Domains   Authority-0.16304010243 %76 %
82Variations in Nav Tags   Relevancy-0.161282340 %89 %
83Variations in First 100 Words   Relevancy-0.1617558 %89 %
84Has Entities in H1 Tags   Relevancy-0.161149 %91 %
85Number of Facebook Pages   Authority-0.166252 %85 %
86Flesch Kincaid Reading Grade Level   Other-0.166190 %87 %
87Number Of JSON-LD Types   Relevancy-0.162291750 %91 %
88Number of Do Follow Backlinks   Authority-0.1619453743088740 %77 %
89Average Words Per Sentence   Size-0.161223171 %84 %
90Number of Backlinks   Authority-0.1619454223192044 %81 %
91Number of H3 Tags   Size-0.1628851 %85 %
92Uses JSON-LD name   Other-0.151148 %82 %
93Number of Sentences   Size-0.1552713877 %86 %
94LSI Words in H3 Tags   Relevancy-0.15632346 %87 %
95Has Entities in H2 Tags   Relevancy-0.151147 %90 %
96Percentage of DoFollow Links   Authority-0.15988074 %88 %
97Number of CSS Includes   Technology-0.1517969 %78 %
98Search Result Number of Dirs in Path   Other-0.153274 %77 %
99Number of H4 Tags   Size-0.1527431 %80 %
100Number of No Follow Backlinks   Authority-0.15328486294934 %68 %
101Has US Phone Number   Trust-0.151142 %81 %
102Number of Absolute URLs   Authority-0.1592728379 %80 %
103Search Result Uses HTTPS   Other-0.151180 %82 %
104Uses Schema name   Other-0.151157 %73 %
105Variations in Section Tags   Relevancy-0.15551532 %86 %
106Number of US Phone Numbers   Trust-0.15891143 %89 %
107Number of Questions In Headings   Size-0.156233 %82 %
108Has Meta Robots   Other-0.151121 %73 %
109Number of HTML Comments   Size-0.151884262 %85 %
110Percentage of DoFollow Internal Links   Authority-0.15877073 %87 %
111Has Schema Markup   Relevancy-0.151160 %73 %
112Has Form   Technology-0.151149 %74 %
113Exact Matches in Sentences   Relevancy-0.1535422 %85 %
114Entities in H4 Tags-0.1413218 %88 %
115Variations in H3 Tags   Relevancy-0.149329 %84 %
116Word Count in Meta Description   Size-0.14331964 %70 %
117Has Privacy Policy   Trust-0.141156 %82 %
118Has Meta Twitter Card   Authority-0.141148 %58 %
119Has Canonical URL   Authority-0.141166 %82 %
120Number of Images without ALT Text   Size-0.1430851 %87 %
121Search Result Domain Length   Size-0.14221681 %82 %
122Search Result Host Length   Size-0.14221681 %82 %
123Meta Description Length   Size-0.1419711864 %71 %
124Uses JSON-LD url   Other-0.141142 %80 %
125Exact Matches in H1-H6 Tags   Relevancy-0.147120 %85 %
126Leading Variations in H2 Tags   Relevancy-0.143116 %85 %
127Number of JavaScript Includes   Technology-0.14401775 %72 %
128Uses JSON-LD description   Other-0.141140 %73 %
129Uses Schema product   Other-0.141110 %48 %
130Title Tag Has Entities   Relevancy-0.141161 %89 %
131Uses Schema url   Other-0.141153 %73 %
132Title Length   Size-0.14815278 %73 %
133Variations Making Whole LI Tags   Relevancy-0.144119 %81 %
134Has Contact Page   Trust-0.141161 %77 %
135Variations in I Tags   Relevancy-0.1410319 %80 %
136Has Meta Charset   Technology-0.141166 %85 %
137Variations in Footer Tags   Relevancy-0.1435732 %87 %
138Has Meta Viewport   Technology-0.141177 %79 %
139Headings Has Question   Other-0.141132 %84 %
140Number of Nofollow Links   Authority-0.1418422 %83 %
141Variations in Strong Tags   Relevancy-0.1410223 %80 %
142LSI Words in H4 Tags   Relevancy-0.1453726 %85 %
143Has Entities in H3 Tags   Relevancy-0.141138 %85 %
144Uses Schema organization   Other-0.131132 %73 %
145Variations Making Whole Span Tags   Relevancy-0.133115 %87 %
146Inline CSS Kilobytes   Size-0.132075863 %84 %
147Uses Schema pricespecification   Other-0.13111 %14 %
148Title Word Count   Size-0.1312878 %77 %
149Variations in Meta Twitter Content   Relevancy-0.132123 %63 %
150Variations making whole H1-H6 Tags   Relevancy-0.131111 %78 %
151Number of Facebook Accounts   Authority-0.133126 %77 %
152Number of Social Pages   Authority-0.1311457 %76 %
153Variations in Meta Twitter Description   Relevancy-0.132122 %68 %
154Uses JSON-LD Organization-0.131129 %76 %
155Percentage of NoFollow Links   Authority-0.1315220 %80 %
156Number of Questions   Size-0.13351263 %76 %
157Number of Social Accounts   Authority-0.137239 %88 %
158Uses JSON-LD inLanguage   Other-0.131125 %64 %
159Has Google Verify   Technology-0.131119 %68 %
160Uses Schema inlanguage   Other-0.131126 %62 %
161Uses Schema description   Other-0.131146 %70 %
162Percentage of DoFollow External Links   Authority-0.13231169 %79 %
163Number of LinkedIn Pages   Authority-0.132129 %82 %
164Has OpenGraph Type   Relevancy-0.131158 %70 %
165Variations in TITLE Attributes   Relevancy-0.1337534 %78 %
166Uses Schema website   Other-0.131129 %63 %
167Page Size Kilobytes   Size-0.13103735679 %67 %
168Number of Email Addresses   Trust-0.1358436 %80 %
169Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %80 %
170Uses JSON-LD ImageObject   Other-0.131131 %65 %
171Uses JSON-LD PriceSpecification   Other-0.13111 %12 %
172Exact Matches in Title Tag   Relevancy-0.132117 %82 %
173Has Meta Description   Relevancy-0.131162 %75 %
174Uses Schema listitem   Other-0.131140 %74 %
175Uses JSON-LD BreadcrumbList   Other-0.131131 %84 %
176Exact Matches in Top 30KB   Relevancy-0.139216 %79 %
177Number of Questions In H2 Tags   Size-0.134123 %82 %
178Uses Schema breadcrumblist   Other-0.131140 %73 %
179Is Home Page   Other-0.131111 %42 %
180Uses JSON-LD datePublished   Other-0.131130 %65 %
181Uses JSON-LD ListItem   Other-0.131132 %85 %
182Variations making whole A Tags   Relevancy-0.134123 %81 %
183Uses JSON-LD Product   Other-0.13119 %51 %
184Uses Schema imageobject   Other-0.131137 %60 %
185Uses Schema webpage   Other-0.131131 %65 %
186Is Article Page   Other-0.131139 %71 %
187Has Terms of Service   Trust-0.121137 %70 %
188Number Of Claimed Brands   Other-0.1215324 %78 %
189Variations in Figure Tags   Relevancy-0.1244510 %83 %
190Percentage of NoFollow Internal Links   Authority-0.126112 %78 %
191Variations in Article Tags   Relevancy-0.12451021 %80 %
192Variations in B Tags   Relevancy-0.1219211 %73 %
193Meta Description Tag Has Entities   Relevancy-0.121153 %81 %
194Number of Questions In H3 Tags   Size-0.123115 %78 %
195Uses JSON-LD ethicsPolicy   Other-0.12112 %12 %
196Uses Schema ethicspolicy   Other-0.12112 %12 %
197Has Entities in H4 Tags   Relevancy-0.121118 %81 %
198Has OpenGraph Image   Relevancy-0.121153 %65 %
199Uses JSON-LD dateModified   Other-0.121128 %65 %
200Inline JavaScript Kilobytes   Size-0.1252417275 %64 %