Measures 138812 SEO Factors

137090 Built-In SEO Factors

128330 On-page SEO Factors

8760 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 ( 54017 )
Relevancy SEO Factors ( 53295 )
Other SEO Factors ( 26888 )
Local SEO Factors ( 8584 )
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 ( 54013 )
Keywords SEO Factors ( 41265 )
Schema SEO Factors ( 26834 )
Local SEO Factors ( 8585 )
LSI SEO Factors ( 8472 )
Entities SEO Factors ( 3536 )
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 2025-02     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique Variations Used   Diversity-0.2548981 %89 %
2Search Result Domain is .com, .net, or .org   Other-0.25115 %79 %
3Entities in Title Tag   Relevancy-0.247368 %92 %
4Number of Unique LSI Words Used   Diversity-0.2489925684 %73 %
5Number of Distinct Entities Used   Diversity-0.24622777 %94 %
6Search Result Domain is .com   Other-0.24115 %80 %
7Number of Top 100 Shared Factors Used   Diversity-0.23393196 %92 %
8Load Time Milliseconds   Performance-0.238246163885 %92 %
9Number of Top 200 Shared Factors Used   Diversity-0.23524196 %92 %
10Number of Top 50 Shared Factors Used   Diversity-0.22181396 %90 %
11Variations in H1-H6 Tags   Relevancy-0.22184869 %87 %
12Variations in Sentences   Relevancy-0.2125005074 %87 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.21147768 %88 %
14Variations in Body Tags   Relevancy-0.216197948179 %88 %
15Variations in HTML Tags   Relevancy-0.216197947979 %88 %
16Variations in Search Result Display URL   Relevancy-0.2111280 %82 %
17Variations in Search Result Link Text   Relevancy-0.2111280 %82 %
18Variations in H1 and H2 Tags   Relevancy-0.2172566 %88 %
19Variations in Div Tags   Relevancy-0.212040618076 %89 %
20Variations in P Tags   Relevancy-0.2119794170 %87 %
21Entities in Sentences   Relevancy-0.283313173 %93 %
22Entities in the HTML Tag   Relevancy-0.291313574 %94 %
23Entities in H1 Tags-0.28257 %88 %
24Variations in the Title Tag   Relevancy-0.214269 %86 %
25Clean Keyword Density in the HTML Tag   Relevancy-0.2195572 %83 %
26Number of Factors Used   Diversity-0.231618596 %87 %
27Term Frequency   Relevancy-0.26379 %88 %
28Entities in H2 Tags-0.231654 %92 %
29Variations in Search Result URL Path   Relevancy-0.197252 %81 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1921248 %87 %
31Variations in Search Result Document File Name   Relevancy-0.195149 %81 %
32Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1916245 %87 %
33Variations in LI Tags   Relevancy-0.1916102769 %88 %
34Variations in Search Result URL   Relevancy-0.1917259 %76 %
35Number of Includes   Technology-0.19692680 %78 %
36Variations in A Tags   Relevancy-0.1924433370 %88 %
37Variations in H1 Tags   Relevancy-0.1910158 %85 %
38Variations in H2 Tags   Relevancy-0.1963449 %87 %
39Variations in Meta Description   Relevancy-0.1943257 %83 %
40Variations in First 100 Words   Relevancy-0.18191869 %84 %
41Entities in Meta Description Tag   Relevancy-0.188358 %88 %
42Variations in the Canonical URL   Relevancy-0.1846255 %80 %
43Number of Referring Domains   Authority-0.1819844245 %29 %
44Variation Density in Top 30KB   Relevancy-0.18296363 %82 %
45Variation Count in Top 30KB   Relevancy-0.1850283869 %84 %
46Variations in OpenGraph Title   Relevancy-0.1810255 %81 %
47Variations in Script Tags   Relevancy-0.181766014565 %85 %
48Variations in Distinct A Tag HREF Attributes   Relevancy-0.1713343266 %89 %
49Variations in A Tag HREF Attributes   Relevancy-0.1718194765 %89 %
50Entities in H3 Tags-0.1726644 %91 %
51Number of Backlinks   Authority-0.17455029359645 %29 %
52Variations in OpenGraph Description   Relevancy-0.1731250 %78 %
53Search Result Number of Dirs in Path   Other-0.174274 %78 %
54Leading Variations in H1 Tags   Relevancy-0.172128 %83 %
55Leading Variations in Title Tag   Relevancy-0.171132 %80 %
56Variations in Absolute URLs   Relevancy-0.1755597666 %86 %
57Number of No Follow Backlinks   Authority-0.17266081134536 %28 %
58TF/IDF   Relevancy-0.171163 %83 %
59Number of CSS Includes   Technology-0.1720973 %75 %
60Has JSON-LD Schema Markup   Relevancy-0.171156 %75 %
61Number of Do Follow Backlinks   Authority-0.17378217251039 %28 %
62Number of Facebook Pages   Authority-0.176263 %75 %
63LSI Words in Title Tag   Relevancy-0.1717563 %92 %
64Variations in Span Tags   Relevancy-0.174411254 %86 %
65Variations in ALT Attributes   Relevancy-0.16125849 %83 %
66Number of HTML Tags   Size-0.162854106684 %85 %
67Number of Sentences   Size-0.16359214284 %83 %
68Has Entities in H1 Tags   Relevancy-0.161158 %85 %
69Variations in H3 Tags   Relevancy-0.1677336 %85 %
70LSI Words in Sentences   Relevancy-0.16533259163 %92 %
71Number of Images   Size-0.161893180 %83 %
72Title Tag Has Entities   Relevancy-0.161169 %86 %
73Unabridged Word Count   Size-0.1613501187684 %85 %
74Word Count   Size-0.165172146884 %84 %
75Exact Matches in the HTML Tag   Relevancy-0.169941127 %85 %
76Leading Variations in H2 Tags   Relevancy-0.168123 %83 %
77Clean Text Kilobytes   Size-0.16751280 %85 %
78Number of Questions   Size-0.161321167 %83 %
79Variations in Main Tags   Relevancy-0.15977010037 %82 %
80Page Size Kilobytes   Size-0.15148327785 %85 %
81Number Of JSON-LD Types   Relevancy-0.1526053359 %80 %
82Variations in Section Tags   Relevancy-0.1512802140 %81 %
83Percentage of DoFollow Internal Links   Authority-0.15967481 %86 %
84Percentage of DoFollow Links   Authority-0.151008582 %88 %
85Variations in Nav Tags   Relevancy-0.1547663449 %84 %
86Number of H2 Tags   Size-0.1517771 %80 %
87Number of Links   Authority-0.1554215481 %81 %
88Number of Internal Links   Authority-0.1553513981 %82 %
89Number of JavaScript Includes   Technology-0.15551782 %76 %
90Number of HTTPS Links   Authority-0.1554115181 %82 %
91Number of DoFollow Links   Authority-0.1553515081 %81 %
92Number of Heading Tags   Size-0.15962180 %82 %
93Number of P Tags   Size-0.151163880 %83 %
94Number of Absolute URLs   Authority-0.15291829484 %82 %
95Number of Images with ALT Text   Size-0.151382176 %85 %
96Variations in the last 100 words   Relevancy-0.15193450 %81 %
97Inline CSS Kilobytes   Size-0.151825965 %85 %
98Has Entities in H2 Tags   Relevancy-0.151155 %84 %
99Uses JSON-LD startDate   Other-0.15115 %11 %
100Inline JavaScript Kilobytes   Size-0.1513249082 %82 %
101Number of Questions In Headings   Size-0.148237 %82 %
102Number of Instagram Pages   Authority-0.1418246 %76 %
103Uses Schema startdate   Other-0.14115 %12 %
104Variations in Footer Tags   Relevancy-0.1419901337 %83 %
105Variations making whole A Tags   Relevancy-0.1420232 %81 %
106Variations in TITLE Attributes   Relevancy-0.14118736 %82 %
107Flesch Kincaid Reading Grade Level   Other-0.146293 %85 %
108Search Result Host Length   Size-0.14251884 %76 %
109Search Result Domain Length   Size-0.14251884 %77 %
110Variations making whole H1-H6 Tags   Relevancy-0.142115 %79 %
111LSI Words in H1 Tags   Relevancy-0.1414455 %91 %
112Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %77 %
113Search Result URL Length   Size-0.141076495 %58 %
114Variations Making Whole LI Tags   Relevancy-0.146127 %79 %
115LSI Words in Meta Description Tag   Relevancy-0.1428952 %88 %
116Number of H3 Tags   Size-0.1428863 %80 %
117Variations in Strong Tags   Relevancy-0.14113327 %79 %
118Search Result Uses HTTPS   Other-0.141184 %86 %
119Has Meta Viewport   Technology-0.141182 %82 %
120Uses Schema name   Other-0.141161 %69 %
121LSI Words in H2 Tags   Relevancy-0.14851653 %90 %
122Variations Making Whole Span Tags   Relevancy-0.1422121 %79 %
123Number of Prices   Size-0.146227169 %83 %
124Title Word Count   Size-0.1433883 %78 %
125Number of US Phone Numbers   Trust-0.143931949 %78 %
126Number of HTML Comments   Size-0.145105276 %81 %
127Has Schema Markup   Relevancy-0.141165 %71 %
128Number of DoFollow External Links   Authority-0.14481477 %76 %
129Number of External Links   Authority-0.14561678 %77 %
130Uses JSON-LD name   Other-0.131156 %71 %
131Has Meta Charset   Technology-0.131177 %76 %
132Number of H1 Tags   Size-0.135274 %83 %
133Exact Matches in H1-H6 Tags   Relevancy-0.1311118 %82 %
134Variations in Meta Twitter Description   Relevancy-0.1315123 %75 %
135Variations in Search Result Summary   Relevancy-0.1346279 %62 %
136Variations in Meta Twitter Content   Relevancy-0.1310125 %73 %
137Uses Schema url   Other-0.131156 %63 %
138Number of Twitter Accounts   Authority-0.134130 %68 %
139Number of LinkedIn Pages   Authority-0.133127 %68 %
140Title Length   Size-0.131775283 %76 %
141Is OpenGraph Type Article   Technology-0.131136 %53 %
142Number of Questions In H2 Tags   Size-0.134123 %76 %
143Headings Has Question   Other-0.131137 %75 %
144Has Entities in H3 Tags   Relevancy-0.131145 %83 %
145Entities in H4 Tags-0.1313221 %86 %
146Uses JSON-LD unitCode   Other-0.13113 %13 %
147Variations in I Tags   Relevancy-0.13312525 %77 %
148Number of Social Pages   Authority-0.1324468 %73 %
149Uses Schema unitcode   Other-0.13113 %13 %
150Number of Email Addresses   Trust-0.13167543 %75 %
151Meta Description Tag Has Entities   Relevancy-0.131157 %80 %
152Word Count in Meta Description   Size-0.13522068 %76 %
153Has Meta Description   Relevancy-0.131167 %76 %
154Uses JSON-LD url   Other-0.131146 %70 %
155Has Privacy Policy   Trust-0.131160 %69 %
156Number of Images without ALT Text   Size-0.131641161 %82 %
157Variations in Article Tags   Relevancy-0.136651524 %71 %
158Leading Variations in H3 Tags   Relevancy-0.139118 %78 %
159Uses JSON-LD ItemList   Other-0.13113 %40 %
160Exact Matches in Title Tag   Relevancy-0.132116 %80 %
161Uses Schema aggregaterating   Other-0.13119 %59 %
162Number of Facebook Accounts   Authority-0.133131 %70 %
163Percentage of DoFollow External Links   Authority-0.13301275 %72 %
164Has FavIcon   Technology-0.131174 %73 %
165Uses JSON-LD Audience-0.13112 %16 %
166Meta Description Length   Size-0.1333912168 %77 %
167Has OpenGraph Type   Relevancy-0.131163 %66 %
168Has Canonical URL   Authority-0.121173 %74 %
169Uses Schema itemlist   Other-0.12113 %40 %
170Number of Questions In H3 Tags   Size-0.126117 %76 %
171Uses Schema howtostep   Other-0.12113 %13 %
172Has US Phone Number   Trust-0.121150 %70 %
173Uses JSON-LD HowToStep   Other-0.12113 %13 %
174Exact Matches in Top 30KB   Relevancy-0.1221216 %80 %
175Number of Forms   Technology-0.1211258 %73 %
176Has Email   Trust-0.121143 %66 %
177Has Meta Twitter Card   Authority-0.121151 %63 %
178Uses Schema description   Other-0.121147 %63 %
179Uses Schema audience   Other-0.12112 %16 %
180Variations in Style Tags   Relevancy-0.12169876915 %79 %
181Variations in H4-H6 Tags   Relevancy-0.1238219 %76 %
182Uses Schema howto   Other-0.12112 %13 %
183Uses Schema ratingvalue   Other-0.121110 %59 %
184Has Contact Page   Trust-0.121166 %67 %
185Uses JSON-LD description   Other-0.121143 %64 %
186Uses JSON-LD HowTo   Other-0.12112 %13 %
187Variations in Button Tags   Relevancy-0.12102449 %78 %
188Uses JSON-LD priceCurrency   Other-0.12116 %46 %
189Number of Nofollow Links   Authority-0.1229428 %76 %
190Uses JSON-LD AggregateRating   Other-0.12118 %60 %
191Is Store Page   Other-0.121146 %63 %
192Uses Schema webpage   Other-0.121137 %54 %
193Is Article Page   Other-0.121145 %59 %
194Exact Matches in Sentences   Relevancy-0.1251320 %86 %
195Average Words Per Sentence   Size-0.123453982 %76 %
196Uses Schema pricecurrency   Other-0.12117 %46 %
197LSI Words in H3 Tags   Relevancy-0.121181645 %89 %
198Variations making whole H1 Tags   Relevancy-0.12117 %77 %
199Uses Schema image   Other-0.121123 %67 %
200Uses JSON-LD BreadcrumbList   Other-0.121136 %66 %