Measures 137806 SEO Factors

136084 Built-In SEO Factors

127647 On-page SEO Factors

8437 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

SEO Factor Class

Size SEO Factors ( 53848 )
Relevancy SEO Factors ( 53110 )
Other SEO Factors ( 26572 )
Local SEO Factors ( 8260 )
Technology SEO Factors ( 1599 )
Authority SEO Factors ( 163 )
Pay Per Click SEO Factors ( 29 )
Diversity SEO Factors ( 15 )
Trust SEO Factors ( 15 )
Easy SEO Factors ( 3 )
Performance SEO Factors ( 1 )

SEO Factor Type

Size SEO Factors ( 53844 )
Keywords SEO Factors ( 41099 )
Schema SEO Factors ( 26518 )
LSI SEO Factors ( 8462 )
Local SEO Factors ( 8261 )
Entities SEO Factors ( 3527 )
Other SEO Factors ( 1705 )
Backlinks SEO Factors ( 72 )
Social SEO Factors ( 58 )
Page Links SEO Factors ( 29 )
Structure SEO Factors ( 23 )
Meta SEO Factors ( 14 )
On Page SEO Factors ( 3 )
These counts reflect SEO factors with generated docs.
Not all SEO factors have that yet.

Compare Top SEO Factors By Month


Compare Months Before and After Helpful Content Update ( note the factors that exited at the bottom )
Data Documentation - As seen on Digitaleer.com

TOP SEO Factors for 2025-01     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-0.23112128087 %71 %
2Number of Distinct Entities Used   Diversity-0.23652982 %94 %
3Number of Unique Variations Used   Diversity-0.22551085 %90 %
4Search Result Domain is .com, .net, or .org   Other-0.22115 %80 %
5Entities in Title Tag   Relevancy-0.218373 %92 %
6Variations in Search Result Document File Name   Relevancy-0.2110256 %82 %
7Search Result Domain is .com   Other-0.21114 %80 %
8Number of Top 200 Shared Factors Used   Diversity-0.2534198 %94 %
9Variations in Search Result Link Text   Relevancy-0.210288 %80 %
10Variations in Search Result URL Path   Relevancy-0.212260 %82 %
11Variations in Search Result Display URL   Relevancy-0.210288 %82 %
12Number of Top 100 Shared Factors Used   Diversity-0.2403198 %94 %
13Variations in Search Result URL   Relevancy-0.220269 %78 %
14Load Time Milliseconds   Performance-0.217725154088 %90 %
15Variations in H1 and H2 Tags   Relevancy-0.1956571 %85 %
16Number of Factors Used   Diversity-0.1952519598 %89 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.19191873 %89 %
18Variations in the Title Tag   Relevancy-0.1916276 %85 %
19Variations in Body Tags   Relevancy-0.199926538484 %90 %
20Variations in HTML Tags   Relevancy-0.199926538484 %90 %
21Variations in Sentences   Relevancy-0.1949555880 %89 %
22Variations in First 100 Words   Relevancy-0.191811078 %84 %
23Number of Includes   Technology-0.19602483 %78 %
24Entities in Sentences   Relevancy-0.19124413575 %93 %
25Entities in the HTML Tag   Relevancy-0.19133713977 %93 %
26Variations in H1-H6 Tags   Relevancy-0.191721074 %90 %
27Variations in the Canonical URL   Relevancy-0.1951261 %85 %
28Variations in Div Tags   Relevancy-0.193327219181 %89 %
29Number of Top 50 Shared Factors Used   Diversity-0.19171397 %91 %
30Entities in H2 Tags-0.1830656 %90 %
31Variations in P Tags   Relevancy-0.1892915575 %89 %
32Entities in H1 Tags-0.187260 %88 %
33Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821249 %85 %
34Number of Facebook Pages   Authority-0.1816263 %80 %
35Variations in H1 Tags   Relevancy-0.1818263 %82 %
36Leading Variations in H1-H6 Tags   Relevancy-0.1822252 %85 %
37Clean Keyword Density in the HTML Tag   Relevancy-0.18188579 %82 %
38Number of Referring Domains   Authority-0.189185048 %15 %
39Variations in H2 Tags   Relevancy-0.1746454 %84 %
40Variations in LI Tags   Relevancy-0.1716132973 %87 %
41Variations in A Tags   Relevancy-0.1745513374 %86 %
42Entities in H3 Tags-0.1744646 %92 %
43Term Frequency   Relevancy-0.176384 %88 %
44Number of Do Follow Backlinks   Authority-0.17258226390743 %15 %
45Number of CSS Includes   Technology-0.1722975 %75 %
46Variations in A Tag HREF Attributes   Relevancy-0.1725255772 %86 %
47Variations in Meta Description   Relevancy-0.1738263 %84 %
48Variations in Distinct A Tag HREF Attributes   Relevancy-0.1715773972 %87 %
49Has JSON-LD Schema Markup   Relevancy-0.171156 %76 %
50Entities in Meta Description Tag   Relevancy-0.1713361 %86 %
51Variations in OpenGraph Title   Relevancy-0.1710260 %81 %
52Number of Backlinks   Authority-0.17266009400046 %16 %
53Variations in Absolute URLs   Relevancy-0.17120938974 %89 %
54Variations in OpenGraph Description   Relevancy-0.1735256 %83 %
55Number of Instagram Pages   Authority-0.1611245 %76 %
56Number of No Follow Backlinks   Authority-0.162328547639 %15 %
57Variation Density in Top 30KB   Relevancy-0.16302373 %85 %
58Leading Variations in Title Tag   Relevancy-0.161135 %79 %
59Leading Variations in H1 Tags   Relevancy-0.163131 %82 %
60Unabridged Word Count   Size-0.1612096182088 %83 %
61Variations in Script Tags   Relevancy-0.162424612070 %86 %
62Word Count   Size-0.164829145587 %83 %
63Clean Text Kilobytes   Size-0.16691282 %85 %
64Variations in Span Tags   Relevancy-0.1610861359 %86 %
65Number of HTML Tags   Size-0.16300598488 %83 %
66Variations in Nav Tags   Relevancy-0.1561423653 %83 %
67Variations in ALT Attributes   Relevancy-0.15190853 %84 %
68Variations in H3 Tags   Relevancy-0.1597441 %85 %
69TF/IDF   Relevancy-0.151171 %82 %
70Number of Sentences   Size-0.15111911787 %85 %
71Number of Heading Tags   Size-0.15912081 %80 %
72Number of Images   Size-0.152372882 %82 %
73Number of P Tags   Size-0.151433781 %82 %
74Exact Matches in the HTML Tag   Relevancy-0.15346925 %84 %
75LSI Words in Sentences   Relevancy-0.15350460462 %93 %
76Has Entities in H1 Tags   Relevancy-0.151161 %80 %
77Variation Count in Top 30KB   Relevancy-0.1558764075 %83 %
78Number of Images with ALT Text   Size-0.152302077 %84 %
79Number of HTTPS Links   Authority-0.1470014184 %81 %
80Number of DoFollow Links   Authority-0.1457614085 %80 %
81Variations in the last 100 words   Relevancy-0.14186561 %81 %
82Leading Variations in H2 Tags   Relevancy-0.146126 %83 %
83Number of Internal Links   Authority-0.1452912784 %80 %
84LSI Words in Title Tag   Relevancy-0.1415562 %90 %
85Number of Links   Authority-0.1470714385 %78 %
86Variations in Main Tags   Relevancy-0.14122689239 %80 %
87Number of Facebook Accounts   Authority-0.1412132 %74 %
88Number of Questions   Size-0.14781170 %84 %
89Search Result Number of Dirs in Path   Other-0.144278 %77 %
90Number of H2 Tags   Size-0.1425772 %80 %
91Title Tag Has Entities   Relevancy-0.141173 %83 %
92Number of Absolute URLs   Authority-0.14112925787 %82 %
93Variations in Footer Tags   Relevancy-0.1433121742 %82 %
94Number of LinkedIn Pages   Authority-0.147129 %76 %
95Number of External Links   Authority-0.141791681 %81 %
96Page Size Kilobytes   Size-0.1488925788 %82 %
97Percentage of DoFollow Links   Authority-0.141008684 %87 %
98Number of DoFollow External Links   Authority-0.14531480 %80 %
99Variations in Style Tags   Relevancy-0.14266805019 %79 %
100Number Of JSON-LD Types   Relevancy-0.141981460 %83 %
101Number of Twitter Accounts   Authority-0.143132 %74 %
102Percentage of DoFollow Internal Links   Authority-0.14927584 %81 %
103Inline CSS Kilobytes   Size-0.142185667 %83 %
104Number of Questions In Headings   Size-0.148239 %81 %
105Has Entities in H2 Tags   Relevancy-0.141157 %81 %
106Number of H3 Tags   Size-0.1429864 %81 %
107Variations making whole H1-H6 Tags   Relevancy-0.132115 %72 %
108Number of HTML Comments   Size-0.135974577 %81 %
109Variations in Strong Tags   Relevancy-0.13125332 %78 %
110Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %71 %
111Variations Making Whole Span Tags   Relevancy-0.1317123 %78 %
112Variations in Section Tags   Relevancy-0.1311012743 %78 %
113Number of JavaScript Includes   Technology-0.13511684 %77 %
114Variations Making Whole LI Tags   Relevancy-0.1317128 %75 %
115Number of H1 Tags   Size-0.1318275 %80 %
116Number of US Phone Numbers   Trust-0.136481351 %79 %
117Number of Social Pages   Authority-0.1329468 %77 %
118Variations in TITLE Attributes   Relevancy-0.13236742 %79 %
119Entities in H4 Tags-0.1321222 %82 %
120Flesch Kincaid Reading Grade Level   Other-0.137295 %85 %
121Search Result Host Length   Size-0.13241887 %74 %
122Variations making whole A Tags   Relevancy-0.1335234 %76 %
123Search Result Domain Length   Size-0.13241887 %77 %
124Has Entities in H3 Tags   Relevancy-0.131146 %81 %
125LSI Words in H2 Tags   Relevancy-0.13801652 %90 %
126Number of Questions In H2 Tags   Size-0.135124 %76 %
127Search Result Uses HTTPS   Other-0.131187 %85 %
128Number of Email Addresses   Trust-0.13127645 %78 %
129Number of Prices   Size-0.135646171 %83 %
130Percentage of DoFollow External Links   Authority-0.13281378 %77 %
131Inline JavaScript Kilobytes   Size-0.134548384 %83 %
132LSI Words in H1 Tags   Relevancy-0.1316453 %89 %
133Number of Social Accounts   Authority-0.1312251 %75 %
134Number of Images without ALT Text   Size-0.1348961 %79 %
135LSI Words in Meta Description Tag   Relevancy-0.1336951 %90 %
136Headings Has Question   Other-0.121139 %74 %
137Variations in ID Attributes   Relevancy-0.12525315 %75 %
138Has Meta Viewport   Technology-0.121185 %79 %
139Search Result URL Length   Size-0.121046697 %54 %
140Has Canonical URL   Authority-0.121174 %78 %
141Variations in Meta Twitter Description   Relevancy-0.1224126 %74 %
142Variations in HTML Comment Tags   Relevancy-0.12897311 %74 %
143Has Privacy Policy   Trust-0.121161 %73 %
144Has US Phone Number   Trust-0.121152 %71 %
145Leading Variations in H3 Tags   Relevancy-0.129119 %80 %
146Word Count in Meta Description   Size-0.12482070 %76 %
147Meta Description Tag Has Entities   Relevancy-0.121161 %77 %
148Variations in Meta Twitter Content   Relevancy-0.127128 %71 %
149Variations in Article Tags   Relevancy-0.125422027 %71 %
150Exact Matches in H1-H6 Tags   Relevancy-0.1211116 %84 %
151Has Meta Charset   Technology-0.121179 %72 %
152Number Of Claimed Brands   Other-0.12151324 %73 %
153Meta Description Length   Size-0.1250112370 %78 %
154Uses Schema addressregion   Other-0.121118 %63 %
155Uses JSON-LD addressRegion   Other-0.121116 %63 %
156Has Email   Trust-0.121145 %71 %
157Number of Questions In H3 Tags   Size-0.124118 %79 %
158Variations in Button Tags   Relevancy-0.121863610 %78 %
159Uses Schema geocircle   Other-0.12112 %18 %
160Uses Schema postaladdress   Other-0.121119 %62 %
161Uses Schema addresslocality   Other-0.121118 %63 %
162Title Word Count   Size-0.1229886 %74 %
163Has Meta Description   Relevancy-0.121170 %70 %
164Uses JSON-LD PostalAddress   Other-0.121117 %65 %
165Uses JSON-LD streetAddress   Other-0.121115 %63 %
166Uses JSON-LD addressLocality   Other-0.121116 %65 %
167Variations in Class Attributes   Relevancy-0.1280751927 %76 %
168Has Schema Markup   Relevancy-0.121166 %72 %
169Exact Matches in Top 30KB   Relevancy-0.1219115 %82 %
170Uses Schema pricerange   Other-0.12119 %53 %
171Uses JSON-LD reviewBody   Other-0.12113 %37 %
172Uses JSON-LD GeoCircle   Other-0.12112 %19 %
173Variations in I Tags   Relevancy-0.12194628 %71 %
174Uses Schema currenciesaccepted   Other-0.12113 %22 %
175Variations in H4-H6 Tags   Relevancy-0.1241222 %75 %
176Uses JSON-LD description   Other-0.121144 %65 %
177Uses Schema postalcode   Other-0.121117 %62 %
178Has OpenGraph Type   Relevancy-0.121163 %73 %
179Has Meta Twitter Card   Authority-0.121154 %66 %
180Uses Schema streetaddress   Other-0.121117 %63 %
181Has FavIcon   Technology-0.121177 %75 %
182Uses JSON-LD name   Other-0.121157 %71 %
183Variations making whole H1 Tags   Relevancy-0.12117 %72 %
184Number of Nofollow Links   Authority-0.12131428 %76 %
185Uses JSON-LD priceRange   Other-0.12118 %53 %
186Is OpenGraph Type Article   Technology-0.121137 %61 %
187Uses JSON-LD url-0.121147 %72 %
188Uses JSON-LD HowTo   Other-0.12112 %12 %
189Uses JSON-LD currenciesAccepted   Other-0.12113 %22 %
190Uses Schema howto   Other-0.12112 %12 %
191Uses JSON-LD AdministrativeArea   Other-0.12112 %14 %
192Uses JSON-LD datePublished   Other-0.121136 %61 %
193Title Length   Size-0.112025386 %75 %
194Uses JSON-LD image   Other-0.111116 %68 %
195Uses JSON-LD HowToStep   Other-0.11112 %13 %
196Number of Meta Generator Tags   Technology-0.112136 %64 %
197Uses Schema aggregaterating   Other-0.111110 %62 %
198Uses JSON-LD postalCode   Other-0.111115 %64 %
199Is Article Page   Other-0.111147 %65 %
200Uses Schema listitem   Other-0.111142 %67 %