Measures 137467 SEO Factors

135745 Built-In SEO Factors

127312 On-page SEO Factors

8433 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 ( 53792 )
Relevancy SEO Factors ( 53029 )
Other SEO Factors ( 26497 )
Local SEO Factors ( 8257 )
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 ( 53788 )
Keywords SEO Factors ( 41024 )
Schema SEO Factors ( 26443 )
LSI SEO Factors ( 8460 )
Local SEO Factors ( 8258 )
Entities SEO Factors ( 3523 )
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 2025-1     previous

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-0.23652985 %93 %
2Search Result Domain is .com, .net, or .org   Other-0.22115 %78 %
3Number of Unique Variations Used   Diversity-0.22471086 %88 %
4Number of Unique LSI Words Used   Diversity-0.22112126987 %70 %
5Entities in Title Tag   Relevancy-0.218376 %91 %
6Search Result Domain is .com   Other-0.21115 %79 %
7Variations in Search Result Document File Name   Relevancy-0.27258 %80 %
8Load Time Milliseconds   Performance-0.26629155389 %91 %
9Number of Top 200 Shared Factors Used   Diversity-0.19524199 %92 %
10Variations in Search Result URL Path   Relevancy-0.197262 %80 %
11Number of Top 100 Shared Factors Used   Diversity-0.19393199 %93 %
12Variations in Search Result Display URL   Relevancy-0.199289 %81 %
13Entities in H2 Tags-0.1930757 %89 %
14Variations in Search Result Link Text   Relevancy-0.199289 %79 %
15Variations in First 100 Words   Relevancy-0.191811079 %82 %
16Number of Factors Used   Diversity-0.1947719599 %88 %
17Entities in the HTML Tag   Relevancy-0.18133713880 %93 %
18Entities in Sentences   Relevancy-0.18124413477 %93 %
19Variations in the Title Tag   Relevancy-0.1816277 %83 %
20Variations in Search Result URL   Relevancy-0.1816271 %76 %
21Number of Includes   Technology-0.18602584 %77 %
22Variations in H1 and H2 Tags   Relevancy-0.1856572 %85 %
23Variations in H1, H2, and H3 Tags   Relevancy-0.18108874 %88 %
24Number of Top 50 Shared Factors Used   Diversity-0.18161398 %88 %
25Variations in H1-H6 Tags   Relevancy-0.181471075 %89 %
26Variations in Body Tags   Relevancy-0.18105929285 %89 %
27Variations in HTML Tags   Relevancy-0.18105929185 %89 %
28Variations in Sentences   Relevancy-0.1820635480 %90 %
29Variations in the Canonical URL   Relevancy-0.186263 %83 %
30Variations in P Tags   Relevancy-0.1817805075 %88 %
31Entities in H1 Tags-0.185262 %86 %
32Variations in Div Tags   Relevancy-0.171773917282 %87 %
33Number of Facebook Pages   Authority-0.175263 %78 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1714249 %85 %
35Number of CSS Includes   Technology-0.1719975 %75 %
36Entities in H3 Tags-0.1744646 %92 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1718251 %84 %
38Variations in H2 Tags   Relevancy-0.1746454 %85 %
39Clean Keyword Density in the HTML Tag   Relevancy-0.17188580 %81 %
40Entities in Meta Description Tag   Relevancy-0.1713363 %84 %
41Variations in A Tags   Relevancy-0.171262975 %85 %
42Has JSON-LD Schema Markup   Relevancy-0.171156 %74 %
43Term Frequency   Relevancy-0.166385 %88 %
44Variations in H1 Tags   Relevancy-0.1611264 %79 %
45Variations in Meta Description   Relevancy-0.1636263 %82 %
46Variation Density in Top 30KB   Relevancy-0.16302474 %84 %
47Variations in A Tag HREF Attributes   Relevancy-0.1616675873 %85 %
48Variations in OpenGraph Title   Relevancy-0.164261 %78 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612264073 %86 %
50Variations in LI Tags   Relevancy-0.168662874 %86 %
51Number of Instagram Pages   Authority-0.1610245 %75 %
52Variations in OpenGraph Description   Relevancy-0.165256 %81 %
53Leading Variations in Title Tag   Relevancy-0.161135 %78 %
54Variations in Absolute URLs   Relevancy-0.1680148374 %87 %
55Exact Matches in the HTML Tag   Relevancy-0.15160723 %85 %
56Leading Variations in H1 Tags   Relevancy-0.152130 %81 %
57Unabridged Word Count   Size-0.155210178788 %80 %
58Variations in Script Tags   Relevancy-0.152424614171 %86 %
59Clean Text Kilobytes   Size-0.15331283 %82 %
60Word Count   Size-0.153474142688 %81 %
61Number of HTML Tags   Size-0.15300597289 %82 %
62Number of P Tags   Size-0.151433781 %81 %
63Number of Sentences   Size-0.1551511387 %85 %
64Variations in H3 Tags   Relevancy-0.1563340 %85 %
65Title Tag Has Entities   Relevancy-0.151176 %80 %
66Variations in ALT Attributes   Relevancy-0.1571954 %83 %
67Leading Variations in H2 Tags   Relevancy-0.146126 %82 %
68Variations in the last 100 words   Relevancy-0.14186561 %81 %
69Has Entities in H1 Tags   Relevancy-0.141163 %78 %
70Number of Images with ALT Text   Size-0.141001977 %82 %
71Variations in Span Tags   Relevancy-0.14521260 %83 %
72LSI Words in Title Tag   Relevancy-0.1415562 %90 %
73Variations in Nav Tags   Relevancy-0.141913153 %82 %
74Number of Questions   Size-0.14431069 %84 %
75Number of Images   Size-0.141422883 %81 %
76Number of Heading Tags   Size-0.14512082 %78 %
77TF/IDF   Relevancy-0.141172 %80 %
78Number of Facebook Accounts   Authority-0.142132 %73 %
79Has Entities in H2 Tags   Relevancy-0.141158 %78 %
80Number of H2 Tags   Size-0.1425772 %79 %
81Number of Absolute URLs   Authority-0.14103926488 %82 %
82Page Size Kilobytes   Size-0.1488926088 %83 %
83Variation Count in Top 30KB   Relevancy-0.1447603876 %79 %
84Number of HTTPS Links   Authority-0.1440513785 %81 %
85Inline CSS Kilobytes   Size-0.141435668 %82 %
86Number of Internal Links   Authority-0.1439312484 %80 %
87Variations in Footer Tags   Relevancy-0.1419181441 %81 %
88Number of DoFollow Links   Authority-0.1440113685 %80 %
89Percentage of DoFollow Links   Authority-0.141008685 %87 %
90LSI Words in Sentences   Relevancy-0.14350457762 %92 %
91Search Result Number of Dirs in Path   Other-0.144279 %76 %
92Number of Links   Authority-0.1440514085 %79 %
93Number of Twitter Accounts   Authority-0.143132 %71 %
94Number of External Links   Authority-0.14521581 %83 %
95Number of LinkedIn Pages   Authority-0.133127 %75 %
96Variations Making Whole Span Tags   Relevancy-0.1317124 %75 %
97Percentage of DoFollow Internal Links   Authority-0.13917484 %79 %
98Variations making whole H1-H6 Tags   Relevancy-0.132115 %71 %
99Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %71 %
100Variations in Style Tags   Relevancy-0.13125773920 %79 %
101Variations making whole A Tags   Relevancy-0.1322235 %73 %
102Number of Questions In Headings   Size-0.138239 %76 %
103Number of JavaScript Includes   Technology-0.13511785 %76 %
104Variations in Main Tags   Relevancy-0.13122689038 %79 %
105Number Of JSON-LD Types   Relevancy-0.131041460 %82 %
106Number of US Phone Numbers   Trust-0.133491350 %76 %
107Entities in H4 Tags-0.1312223 %80 %
108Variations in Strong Tags   Relevancy-0.1353332 %76 %
109Variations in Section Tags   Relevancy-0.139012642 %75 %
110Number of DoFollow External Links   Authority-0.13511480 %82 %
111Number of HTML Comments   Size-0.134624577 %79 %
112Variations in Meta Twitter Description   Relevancy-0.1313126 %74 %
113Variations Making Whole LI Tags   Relevancy-0.1317129 %76 %
114Number of H3 Tags   Size-0.1322864 %78 %
115Has Entities in H3 Tags   Relevancy-0.131147 %77 %
116Variations in TITLE Attributes   Relevancy-0.13122742 %77 %
117Flesch Kincaid Reading Grade Level   Other-0.137295 %83 %
118Percentage of DoFollow External Links   Authority-0.13281278 %77 %
119Number of Social Pages   Authority-0.1311469 %77 %
120Number of H1 Tags   Size-0.133275 %79 %
121Number of Prices   Size-0.133766271 %82 %
122Has Privacy Policy   Trust-0.131159 %71 %
123Exact Matches in H1-H6 Tags   Relevancy-0.1310115 %84 %
124Number of Questions In H2 Tags   Size-0.135124 %72 %
125Exact Matches in Top 30KB   Relevancy-0.1314114 %80 %
126Meta Description Tag Has Entities   Relevancy-0.131163 %75 %
127Number of Email Addresses   Trust-0.12127544 %75 %
128LSI Words in H2 Tags   Relevancy-0.12601651 %89 %
129Search Result Uses HTTPS   Other-0.121187 %84 %
130Number of Social Accounts   Authority-0.127250 %75 %
131Has Canonical URL   Authority-0.121175 %77 %
132Variations in HTML Comment Tags   Relevancy-0.12897411 %73 %
133Uses Schema geocircle   Other-0.12112 %23 %
134Title Word Count   Size-0.1219886 %71 %
135Inline JavaScript Kilobytes   Size-0.123758685 %85 %
136Has US Phone Number   Trust-0.121152 %66 %
137Has Meta Viewport   Technology-0.121186 %79 %
138Has Meta Description   Relevancy-0.121169 %68 %
139Headings Has Question   Other-0.121139 %70 %
140Variations in ID Attributes   Relevancy-0.12462314 %73 %
141Word Count in Meta Description   Size-0.12482070 %76 %
142Uses JSON-LD reviewBody   Other-0.12114 %40 %
143LSI Words in Meta Description Tag   Relevancy-0.1225951 %90 %
144Uses Schema currenciesaccepted   Other-0.12113 %24 %
145Uses JSON-LD GeoCircle   Other-0.12112 %24 %
146Variations in Meta Twitter Content   Relevancy-0.124128 %72 %
147Exact Matches in Sentences   Relevancy-0.1235215 %85 %
148Meta Description Length   Size-0.1226512270 %77 %
149Number Of Claimed Brands   Other-0.12151324 %73 %
150Uses Schema pricerange   Other-0.12119 %51 %
151Number of Images without ALT Text   Size-0.1248962 %79 %
152Number of Questions In H3 Tags   Size-0.124118 %74 %
153Uses JSON-LD currenciesAccepted   Other-0.12113 %24 %
154Variations in Form Tags   Relevancy-0.1228114 %70 %
155Search Result Domain Length   Size-0.12241888 %74 %
156Uses JSON-LD HowToStep   Other-0.12112 %13 %
157Uses JSON-LD addressRegion   Other-0.121117 %63 %
158Uses Schema addresslocality   Other-0.121119 %63 %
159LSI Words in H1 Tags   Relevancy-0.1212452 %88 %
160Leading Variations in H3 Tags   Relevancy-0.129118 %80 %
161Has Email   Trust-0.121144 %68 %
162Has Meta Twitter Card   Authority-0.121154 %65 %
163Uses Schema addressregion   Other-0.121118 %64 %
164Variations in Article Tags   Relevancy-0.121781926 %69 %
165Search Result Host Length   Size-0.12241888 %72 %
166Uses JSON-LD addressLocality   Other-0.121117 %64 %
167Exact Matches in Title Tag   Relevancy-0.122113 %79 %
168Uses JSON-LD HowTo   Other-0.12112 %13 %
169Uses JSON-LD priceRange   Other-0.12118 %51 %
170Title Length   Size-0.121115386 %71 %
171Uses Schema howto   Other-0.12112 %13 %
172Number of NoFollow External Links   Authority-0.1215221 %73 %
173Is OpenGraph Type Article   Technology-0.121137 %59 %
174Has Schema Markup   Relevancy-0.121166 %71 %
175Uses Schema reviewbody   Other-0.12114 %44 %
176Has Terms of Service   Trust-0.121140 %68 %
177Number of Nofollow Links   Authority-0.1225429 %76 %
178Uses Schema inlanguage   Other-0.121131 %53 %
179Variations in Button Tags   Relevancy-0.12826410 %75 %
180Has Contact Page   Trust-0.121168 %66 %
181Uses JSON-LD AdministrativeArea   Other-0.12112 %15 %
182Uses JSON-LD inLanguage   Other-0.121131 %55 %
183Uses Schema postaladdress   Other-0.111120 %62 %
184Uses Schema searchaction   Other-0.111126 %56 %
185Uses Schema review   Other-0.11115 %54 %
186Uses Schema howtostep   Other-0.11112 %13 %
187Uses JSON-LD Thing   Other-0.11113 %47 %
188Uses Schema ratingvalue   Other-0.111110 %59 %
189Variations in Class Attributes   Relevancy-0.1140921427 %74 %
190Uses Schema website   Other-0.111137 %56 %
191Uses JSON-LD streetAddress   Other-0.111116 %61 %
192Has FavIcon   Technology-0.111178 %73 %
193Uses Schema thing   Other-0.11113 %51 %
194Uses JSON-LD PostalAddress   Other-0.111117 %64 %
195Uses JSON-LD Review   Other-0.11114 %54 %
196Variations making whole H1 Tags   Relevancy-0.11117 %72 %
197Uses JSON-LD SearchAction   Other-0.111126 %58 %
198Uses Schema price   Other-0.11115 %35 %
199Uses JSON-LD ratingValue   Other-0.11118 %60 %
200Uses Schema readaction   Other-0.111122 %54 %