Measures 141497 SEO Factors

139775 Built-In SEO Factors

130815 On-page SEO Factors

8960 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 2025-1     previous - today - next

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-0.24112127286 %72 %
2Number of Unique Variations Used   Diversity-0.2355984 %91 %
3Number of Distinct Entities Used   Diversity-0.22692877 %95 %
4Search Result Domain is .com, .net, or .org   Other-0.22115 %80 %
5Number of Top 200 Shared Factors Used   Diversity-0.22534197 %94 %
6Number of Top 100 Shared Factors Used   Diversity-0.22403197 %94 %
7Search Result Domain is .com   Other-0.21115 %80 %
8Load Time Milliseconds   Performance-0.2127358169787 %91 %
9Entities in Title Tag   Relevancy-0.218368 %93 %
10Variations in Search Result Document File Name   Relevancy-0.2110254 %81 %
11Variations in Search Result Link Text   Relevancy-0.2118285 %81 %
12Variations in Search Result Display URL   Relevancy-0.2118286 %82 %
13Variations in Search Result URL Path   Relevancy-0.215258 %82 %
14Number of Top 50 Shared Factors Used   Diversity-0.2171396 %91 %
15Variations in H1 and H2 Tags   Relevancy-0.2139669 %87 %
16Variations in Search Result URL   Relevancy-0.220266 %77 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.2264971 %90 %
18Variations in H1-H6 Tags   Relevancy-0.22401072 %90 %
19Number of Factors Used   Diversity-0.252519397 %89 %
20Variations in the Title Tag   Relevancy-0.219274 %84 %
21Variations in Div Tags   Relevancy-0.23327230080 %89 %
22Variations in Body Tags   Relevancy-0.199926568283 %90 %
23Variations in HTML Tags   Relevancy-0.199926568182 %90 %
24Variations in P Tags   Relevancy-0.1992916273 %88 %
25Variations in Sentences   Relevancy-0.1949557178 %89 %
26Variations in First 100 Words   Relevancy-0.192051075 %85 %
27Entities in Sentences   Relevancy-0.19124412971 %94 %
28Entities in the HTML Tag   Relevancy-0.19133713273 %94 %
29Number of Referring Domains   Authority-0.1916105247 %36 %
30Number of Includes   Technology-0.19602581 %78 %
31Variations in the Canonical URL   Relevancy-0.1957259 %84 %
32Variations in H1 Tags   Relevancy-0.1831261 %83 %
33Clean Keyword Density in the HTML Tag   Relevancy-0.18200677 %83 %
34Leading Variations in H1-H6 Tags   Relevancy-0.1828251 %87 %
35Term Frequency   Relevancy-0.186382 %89 %
36Number of Backlinks   Authority-0.18266009402346 %37 %
37Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1826248 %87 %
38Variations in LI Tags   Relevancy-0.1827933372 %87 %
39Entities in H2 Tags-0.1830653 %92 %
40Variations in A Tags   Relevancy-0.1845514273 %87 %
41Number of Do Follow Backlinks   Authority-0.18258226354641 %36 %
42Entities in H1 Tags-0.187256 %89 %
43Variations in H2 Tags   Relevancy-0.18128452 %86 %
44Variations in Meta Description   Relevancy-0.1854361 %84 %
45Number of Facebook Pages   Authority-0.1747263 %80 %
46Variations in A Tag HREF Attributes   Relevancy-0.1725256370 %88 %
47Number of No Follow Backlinks   Authority-0.175776464439 %35 %
48Variation Density in Top 30KB   Relevancy-0.17315571 %85 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.1715944370 %88 %
50Entities in H3 Tags-0.1767643 %93 %
51Number of CSS Includes   Technology-0.1724974 %76 %
52Leading Variations in Title Tag   Relevancy-0.171134 %81 %
53Variations in Absolute URLs   Relevancy-0.171209311271 %89 %
54Variations in OpenGraph Title   Relevancy-0.1716258 %81 %
55Leading Variations in H1 Tags   Relevancy-0.173130 %83 %
56Entities in Meta Description Tag   Relevancy-0.1713357 %88 %
57Has JSON-LD Schema Markup   Relevancy-0.171155 %75 %
58Variations in OpenGraph Description   Relevancy-0.1755254 %82 %
59Variations in Span Tags   Relevancy-0.1610861658 %86 %
60Unabridged Word Count   Size-0.1637249187986 %84 %
61Variations in ALT Attributes   Relevancy-0.16279953 %85 %
62Word Count   Size-0.1628330149286 %84 %
63Number of HTML Tags   Size-0.163722103287 %83 %
64Clean Text Kilobytes   Size-0.162521381 %85 %
65TF/IDF   Relevancy-0.161169 %82 %
66Number of Instagram Pages   Authority-0.1621245 %76 %
67Variation Count in Top 30KB   Relevancy-0.1658845973 %85 %
68Variations in Script Tags   Relevancy-0.162505618869 %86 %
69Variations in Nav Tags   Relevancy-0.1699905852 %83 %
70Variations in H3 Tags   Relevancy-0.16126440 %85 %
71Number of Images   Size-0.162373081 %83 %
72Number of Sentences   Size-0.15176812985 %85 %
73Number of Heading Tags   Size-0.15912181 %81 %
74LSI Words in Sentences   Relevancy-0.15439260162 %94 %
75Number of Images with ALT Text   Size-0.152302076 %84 %
76LSI Words in Title Tag   Relevancy-0.1515561 %90 %
77Exact Matches in the HTML Tag   Relevancy-0.154921026 %86 %
78Number of P Tags   Size-0.151433780 %83 %
79Has Entities in H1 Tags   Relevancy-0.151157 %83 %
80Search Result Number of Dirs in Path   Other-0.154277 %76 %
81Number of Internal Links   Authority-0.1573513283 %81 %
82Percentage of DoFollow Internal Links   Authority-0.15987582 %83 %
83Percentage of DoFollow Links   Authority-0.151008683 %88 %
84Number of DoFollow Links   Authority-0.1573914483 %81 %
85Number of HTTPS Links   Authority-0.1573814683 %82 %
86Number of Links   Authority-0.1573914883 %80 %
87Number of H2 Tags   Size-0.1525771 %81 %
88Number of Questions   Size-0.151801168 %84 %
89Title Tag Has Entities   Relevancy-0.151168 %86 %
90Leading Variations in H2 Tags   Relevancy-0.1511125 %84 %
91Variations in Main Tags   Relevancy-0.151275313038 %82 %
92Variations in the last 100 words   Relevancy-0.14204658 %81 %
93Number of Absolute URLs   Authority-0.14249127286 %82 %
94Page Size Kilobytes   Size-0.14155426786 %82 %
95Number Of JSON-LD Types   Relevancy-0.1423642459 %83 %
96Number of Facebook Accounts   Authority-0.1412132 %74 %
97Variations in Footer Tags   Relevancy-0.1458223040 %82 %
98Inline CSS Kilobytes   Size-0.142185765 %82 %
99Variations in Section Tags   Relevancy-0.1414353142 %81 %
100Number of H3 Tags   Size-0.1431863 %81 %
101Number of Questions In Headings   Size-0.149237 %82 %
102Number of H1 Tags   Size-0.1430274 %82 %
103Variations making whole H1-H6 Tags   Relevancy-0.144115 %75 %
104Number of External Links   Authority-0.143041680 %81 %
105Flesch Kincaid Reading Grade Level   Other-0.147294 %85 %
106Number of JavaScript Includes   Technology-0.14511783 %78 %
107Number of HTML Comments   Size-0.145974676 %83 %
108Number of DoFollow External Links   Authority-0.143011479 %81 %
109Variations in Strong Tags   Relevancy-0.14184431 %78 %
110Search Result Host Length   Size-0.14251886 %75 %
111Number of LinkedIn Pages   Authority-0.1421128 %74 %
112Variations making whole H1, H2, and H3 Tags   Relevancy-0.144113 %75 %
113Search Result Domain Length   Size-0.14251886 %77 %
114Has Entities in H2 Tags   Relevancy-0.141153 %84 %
115Variations Making Whole LI Tags   Relevancy-0.1417127 %77 %
116Search Result Uses HTTPS   Other-0.141186 %85 %
117Variations in TITLE Attributes   Relevancy-0.14782941 %80 %
118Variations Making Whole Span Tags   Relevancy-0.1417122 %78 %
119Has Meta Viewport   Technology-0.141184 %80 %
120Number of US Phone Numbers   Trust-0.136611549 %80 %
121Number of Twitter Accounts   Authority-0.135132 %72 %
122Variations in Style Tags   Relevancy-0.132668012720 %79 %
123LSI Words in Meta Description Tag   Relevancy-0.1342951 %91 %
124LSI Words in H1 Tags   Relevancy-0.1355452 %89 %
125Number of Social Pages   Authority-0.1387468 %78 %
126Number of Prices   Size-0.138026470 %82 %
127LSI Words in H2 Tags   Relevancy-0.13871651 %91 %
128Number of Images without ALT Text   Size-0.131421061 %80 %
129Variations making whole A Tags   Relevancy-0.1335233 %77 %
130Has Canonical URL   Authority-0.131173 %78 %
131Number of Questions In H2 Tags   Size-0.135123 %77 %
132Headings Has Question   Other-0.131138 %75 %
133Inline JavaScript Kilobytes   Size-0.1313748883 %81 %
134Word Count in Meta Description   Size-0.13722069 %77 %
135Meta Description Length   Size-0.1350112369 %79 %
136Number of Email Addresses   Trust-0.13145645 %78 %
137Leading Variations in H3 Tags   Relevancy-0.1317118 %79 %
138Has Entities in H3 Tags   Relevancy-0.131144 %84 %
139Has US Phone Number   Trust-0.131150 %71 %
140Has Meta Charset   Technology-0.131178 %75 %
141Entities in H4 Tags-0.1321221 %85 %
142Has Meta Description   Relevancy-0.131168 %74 %
143Percentage of DoFollow External Links   Authority-0.13281277 %76 %
144Meta Description Tag Has Entities   Relevancy-0.131157 %80 %
145Search Result URL Length   Size-0.131376696 %54 %
146Exact Matches in H1-H6 Tags   Relevancy-0.1311117 %85 %
147Number of Social Accounts   Authority-0.1312250 %76 %
148Title Word Count   Size-0.1329885 %75 %
149Is Home Page   Other-0.121117 %42 %
150Average Words Per Sentence   Size-0.122743882 %78 %
151Has Schema Markup   Relevancy-0.121165 %73 %
152Has Privacy Policy   Trust-0.121160 %73 %
153Variations in Button Tags   Relevancy-0.122280911 %78 %
154Has Email   Trust-0.121145 %70 %
155Has Contact Page   Trust-0.121167 %70 %
156Title Length   Size-0.122025385 %75 %
157Uses JSON-LD name   Other-0.121156 %72 %
158Variations in ID Attributes   Relevancy-0.12704515 %77 %
159Variations in H4-H6 Tags   Relevancy-0.1254222 %77 %
160Uses Schema name   Other-0.121162 %71 %
161Has OpenGraph Type   Relevancy-0.121162 %71 %
162Variations in I Tags   Relevancy-0.12417728 %73 %
163Has Meta Twitter Card   Authority-0.121153 %66 %
164Has FavIcon   Technology-0.121176 %76 %
165Variations in Article Tags   Relevancy-0.1211872426 %72 %
166Number of Questions In H3 Tags   Size-0.125117 %79 %
167Variations in Meta Twitter Description   Relevancy-0.1231125 %74 %
168Variations in Meta Twitter Content   Relevancy-0.1210127 %71 %
169Number of Forms   Technology-0.1217257 %73 %
170Variations in Class Attributes   Relevancy-0.1280754227 %77 %
171Exact Matches in Top 30KB   Relevancy-0.1241216 %83 %
172Number Of Claimed Brands   Other-0.12151324 %72 %
173Uses JSON-LD url-0.121147 %73 %
174Uses Schema website   Other-0.121136 %61 %
175Variations in Search Result Summary   Relevancy-0.1255386 %60 %
176Uses JSON-LD description   Other-0.121143 %67 %
177Uses Schema postaladdress   Other-0.121118 %63 %
178Uses Schema url   Other-0.121156 %67 %
179Uses Schema addressregion   Other-0.121117 %62 %
180Is Article Page   Other-0.121145 %65 %
181Uses JSON-LD addressRegion   Other-0.121115 %63 %
182Is OpenGraph Type Article   Technology-0.121136 %60 %
183Uses Schema breadcrumblist   Other-0.121141 %67 %
184Uses JSON-LD HowTo   Other-0.12112 %12 %
185Uses Schema addresslocality   Other-0.121118 %63 %
186Exact Matches in Sentences   Relevancy-0.1280318 %86 %
187Uses Schema listitem   Other-0.121142 %67 %
188Uses JSON-LD streetAddress   Other-0.121115 %63 %
189Variations in H4 Tags   Relevancy-0.1234217 %75 %
190Uses JSON-LD addressLocality   Other-0.121116 %64 %
191Number of Meta Generator Tags   Technology-0.123136 %64 %
192Uses Schema howto   Other-0.12112 %12 %
193Number of H4 Tags   Size-0.1219439 %74 %
194Uses JSON-LD PostalAddress   Other-0.121116 %65 %
195Uses JSON-LD HowToStep-0.12112 %12 %
196Uses JSON-LD ListItem   Other-0.121137 %67 %
197Variations in HTML Comment Tags   Relevancy-0.121917511 %74 %
198Exact Matches in Title Tag   Relevancy-0.122115 %81 %
199Uses JSON-LD datePublished   Other-0.121136 %61 %
200Uses Schema aggregaterating   Other-0.121110 %61 %