Measures 139131 SEO Factors

137409 Built-In SEO Factors

128643 On-page SEO Factors

8766 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 ( 54021 )
Relevancy SEO Factors ( 53321 )
Other SEO Factors ( 27180 )
Local SEO Factors ( 8590 )
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 ( 54017 )
Keywords SEO Factors ( 41277 )
Schema SEO Factors ( 27126 )
Local SEO Factors ( 8591 )
LSI SEO Factors ( 8481 )
Entities SEO Factors ( 3541 )
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-0.2648880 %89 %
2Search Result Domain is .com, .net, or .org   Other-0.25115 %80 %
3Number of Unique LSI Words Used   Diversity-0.24102326284 %73 %
4Search Result Domain is .com   Other-0.24115 %80 %
5Number of Top 200 Shared Factors Used   Diversity-0.23524095 %93 %
6Number of Top 100 Shared Factors Used   Diversity-0.23393095 %93 %
7Entities in Title Tag   Relevancy-0.237365 %92 %
8Number of Distinct Entities Used   Diversity-0.23662674 %94 %
9Load Time Milliseconds   Performance-0.2213199166384 %92 %
10Number of Top 50 Shared Factors Used   Diversity-0.22181395 %91 %
11Variations in H1-H6 Tags   Relevancy-0.22184868 %88 %
12Variations in Body Tags   Relevancy-0.227247952078 %89 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.22147766 %88 %
14Variations in Sentences   Relevancy-0.2234814972 %88 %
15Variations in HTML Tags   Relevancy-0.227247951878 %90 %
16Variations in Search Result Link Text   Relevancy-0.2111277 %82 %
17Variations in H1 and H2 Tags   Relevancy-0.2172464 %88 %
18Variations in Search Result Display URL   Relevancy-0.2111277 %84 %
19Variations in Div Tags   Relevancy-0.212497819975 %90 %
20Variations in P Tags   Relevancy-0.2119793970 %88 %
21Clean Keyword Density in the HTML Tag   Relevancy-0.21195470 %83 %
22Number of Factors Used   Diversity-0.2142318395 %88 %
23Variations in the Title Tag   Relevancy-0.2114267 %85 %
24Term Frequency   Relevancy-0.26378 %88 %
25Variations in Search Result URL Path   Relevancy-0.29250 %81 %
26Variations in Search Result Document File Name   Relevancy-0.28148 %82 %
27Number of Includes   Technology-0.2692679 %79 %
28Entities in the HTML Tag   Relevancy-0.2109213271 %93 %
29Entities in Sentences   Relevancy-0.299212970 %93 %
30Variations in Search Result URL   Relevancy-0.220257 %77 %
31Leading Variations in H1-H6 Tags   Relevancy-0.1921246 %86 %
32Variations in A Tags   Relevancy-0.1934443469 %89 %
33Variations in LI Tags   Relevancy-0.1916102568 %88 %
34Variations in H1 Tags   Relevancy-0.1917156 %85 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1916244 %87 %
36Entities in H1 Tags-0.198255 %88 %
37Variations in Meta Description   Relevancy-0.1943255 %85 %
38Variations in H2 Tags   Relevancy-0.1963347 %86 %
39Variations in First 100 Words   Relevancy-0.19191767 %85 %
40Entities in H2 Tags-0.1932652 %92 %
41Variations in the Canonical URL   Relevancy-0.1946253 %82 %
42Variation Density in Top 30KB   Relevancy-0.19313461 %85 %
43Variations in Script Tags   Relevancy-0.182810416663 %86 %
44Variations in OpenGraph Title   Relevancy-0.1811153 %82 %
45Variation Count in Top 30KB   Relevancy-0.1852364468 %86 %
46Entities in Meta Description Tag   Relevancy-0.189355 %88 %
47Variations in A Tag HREF Attributes   Relevancy-0.1818894764 %88 %
48Variations in OpenGraph Description   Relevancy-0.1883248 %82 %
49Number of CSS Includes   Technology-0.1827972 %76 %
50Variations in Distinct A Tag HREF Attributes   Relevancy-0.1813343264 %89 %
51Number of Referring Domains   Authority-0.1825044743 %44 %
52Variations in Absolute URLs   Relevancy-0.1892808464 %87 %
53TF/IDF   Relevancy-0.181160 %84 %
54Number of Facebook Pages   Authority-0.176262 %76 %
55Leading Variations in H1 Tags   Relevancy-0.172127 %82 %
56Has JSON-LD Schema Markup   Relevancy-0.171155 %74 %
57Number of Backlinks   Authority-0.17455029408843 %45 %
58Leading Variations in Title Tag   Relevancy-0.171131 %79 %
59Variations in Span Tags   Relevancy-0.176061153 %86 %
60Entities in H3 Tags-0.1727642 %92 %
61Number of Do Follow Backlinks   Authority-0.17378217332437 %44 %
62Search Result Number of Dirs in Path   Other-0.174274 %76 %
63Variations in ALT Attributes   Relevancy-0.17131848 %85 %
64LSI Words in Title Tag   Relevancy-0.1721561 %92 %
65Number of No Follow Backlinks   Authority-0.1726608180834 %42 %
66Number of HTML Tags   Size-0.163438107584 %84 %
67Variations in H3 Tags   Relevancy-0.1677335 %84 %
68Number of Sentences   Size-0.16359213483 %83 %
69Exact Matches in the HTML Tag   Relevancy-0.169941025 %86 %
70Unabridged Word Count   Size-0.1613501189284 %83 %
71Number of Images   Size-0.161893180 %83 %
72Word Count   Size-0.165172149084 %83 %
73Title Tag Has Entities   Relevancy-0.161166 %86 %
74Number of Questions   Size-0.161321167 %83 %
75Has Entities in H1 Tags   Relevancy-0.161155 %86 %
76Variations in Main Tags   Relevancy-0.1697709537 %83 %
77Clean Text Kilobytes   Size-0.16751380 %84 %
78LSI Words in Sentences   Relevancy-0.16533259962 %93 %
79Number Of JSON-LD Types   Relevancy-0.1626052658 %80 %
80Leading Variations in H2 Tags   Relevancy-0.158122 %82 %
81Variations in Section Tags   Relevancy-0.1512802039 %82 %
82Number of JavaScript Includes   Technology-0.15551780 %78 %
83Page Size Kilobytes   Size-0.15148326984 %85 %
84Number of Images with ALT Text   Size-0.151402176 %85 %
85Percentage of DoFollow Links   Authority-0.151008581 %88 %
86Variations in Nav Tags   Relevancy-0.1591614047 %85 %
87Percentage of DoFollow Internal Links   Authority-0.15967480 %86 %
88Variations in the last 100 words   Relevancy-0.15193448 %82 %
89Number of Instagram Pages   Authority-0.1518246 %76 %
90Number of Absolute URLs   Authority-0.15291828483 %83 %
91Number of DoFollow Links   Authority-0.1561115081 %80 %
92Number of P Tags   Size-0.152223879 %82 %
93Number of Links   Authority-0.1567415481 %79 %
94Variations in Footer Tags   Relevancy-0.1520291236 %82 %
95Number of HTTPS Links   Authority-0.1564615281 %81 %
96Number of Heading Tags   Size-0.15962180 %81 %
97Number of Internal Links   Authority-0.1556214081 %81 %
98Number of H2 Tags   Size-0.1528771 %79 %
99Inline CSS Kilobytes   Size-0.151825964 %85 %
100Variations making whole A Tags   Relevancy-0.1520231 %80 %
101Number of Questions In Headings   Size-0.159237 %81 %
102Variations in TITLE Attributes   Relevancy-0.14325735 %82 %
103Variations Making Whole LI Tags   Relevancy-0.146126 %78 %
104Flesch Kincaid Reading Grade Level   Other-0.147292 %85 %
105LSI Words in H1 Tags   Relevancy-0.1419453 %90 %
106Search Result URL Length   Size-0.141076594 %57 %
107Number of H3 Tags   Size-0.1435963 %79 %
108Inline JavaScript Kilobytes   Size-0.1413248181 %82 %
109Variations in Strong Tags   Relevancy-0.14113327 %79 %
110Search Result Host Length   Size-0.14251884 %77 %
111Variations making whole H1-H6 Tags   Relevancy-0.143115 %78 %
112Number of US Phone Numbers   Trust-0.143931648 %80 %
113Has Entities in H2 Tags   Relevancy-0.141152 %84 %
114LSI Words in Meta Description Tag   Relevancy-0.1429950 %89 %
115Variations making whole H1, H2, and H3 Tags   Relevancy-0.142113 %77 %
116Search Result Domain Length   Size-0.14251884 %78 %
117Has Meta Viewport   Technology-0.141182 %81 %
118Search Result Uses HTTPS   Other-0.141183 %83 %
119Uses Schema name   Other-0.141161 %67 %
120Variations in Meta Twitter Description   Relevancy-0.1427122 %76 %
121Variations Making Whole Span Tags   Relevancy-0.1422120 %78 %
122Number of HTML Comments   Size-0.145865075 %82 %
123Number of Twitter Accounts   Authority-0.144130 %69 %
124Title Word Count   Size-0.1433882 %77 %
125Number of LinkedIn Pages   Authority-0.144127 %70 %
126Number of Prices   Size-0.148086668 %84 %
127Variations in Meta Twitter Content   Relevancy-0.1410124 %74 %
128Number of External Links   Authority-0.141151677 %76 %
129Variations in Search Result Summary   Relevancy-0.1446276 %63 %
130Has Schema Markup   Relevancy-0.141164 %71 %
131Uses JSON-LD name   Other-0.141156 %68 %
132Has Meta Charset   Technology-0.141177 %74 %
133Number of DoFollow External Links   Authority-0.14641476 %76 %
134Number of H1 Tags   Size-0.136274 %83 %
135Exact Matches in H1-H6 Tags   Relevancy-0.1311117 %84 %
136Is OpenGraph Type Article   Technology-0.131136 %55 %
137Headings Has Question   Other-0.131138 %75 %
138LSI Words in H2 Tags   Relevancy-0.13851651 %89 %
139Title Length   Size-0.131775282 %76 %
140Uses Schema url   Other-0.131156 %63 %
141Number of Images without ALT Text   Size-0.131641161 %81 %
142Number of Facebook Accounts   Authority-0.133131 %70 %
143Variations in I Tags   Relevancy-0.13312525 %77 %
144Number of Social Pages   Authority-0.1324467 %74 %
145Word Count in Meta Description   Size-0.13652067 %77 %
146Has US Phone Number   Trust-0.131150 %70 %
147Has Meta Description   Relevancy-0.131166 %75 %
148Number of Questions In H2 Tags   Size-0.135123 %76 %
149Uses Schema description   Other-0.131147 %61 %
150Number of Email Addresses   Trust-0.13167543 %78 %
151Has FavIcon   Technology-0.131173 %74 %
152Has Canonical URL   Authority-0.131172 %74 %
153Uses JSON-LD url   Other-0.131146 %69 %
154Exact Matches in Top 30KB   Relevancy-0.1321215 %80 %
155Meta Description Length   Size-0.1337912167 %79 %
156Meta Description Tag Has Entities   Relevancy-0.131154 %81 %
157Has Privacy Policy   Trust-0.131159 %71 %
158Uses Schema aggregaterating   Other-0.131110 %58 %
159Has Entities in H3 Tags   Relevancy-0.131143 %82 %
160Uses Schema howtostep   Other-0.13113 %13 %
161Percentage of DoFollow External Links   Authority-0.13301275 %74 %
162Leading Variations in H3 Tags   Relevancy-0.139116 %80 %
163Variations in Article Tags   Relevancy-0.136651425 %71 %
164Number of Forms   Technology-0.1314258 %73 %
165Is Home Page   Other-0.131117 %34 %
166Has OpenGraph Type   Relevancy-0.131162 %68 %
167Uses Schema howto   Other-0.13112 %13 %
168Number of Questions In H3 Tags   Size-0.136117 %76 %
169Entities in H4 Tags-0.1345220 %86 %
170Uses JSON-LD description   Other-0.131143 %63 %
171Uses JSON-LD HowToStep   Other-0.13113 %13 %
172Has Meta Twitter Card   Authority-0.121151 %66 %
173Is Article Page   Other-0.121145 %59 %
174Uses Schema ratingvalue   Other-0.121110 %57 %
175Uses JSON-LD HowTo   Other-0.12112 %13 %
176Exact Matches in Title Tag   Relevancy-0.122115 %81 %
177Variations in H4-H6 Tags   Relevancy-0.1257218 %77 %
178Has Contact Page   Trust-0.121166 %69 %
179Exact Matches in Sentences   Relevancy-0.1251218 %86 %
180Uses Schema image   Other-0.121123 %63 %
181Uses Schema webpage   Other-0.121137 %56 %
182Has Email   Trust-0.121144 %69 %
183Variations in Button Tags   Relevancy-0.12247779 %78 %
184Uses JSON-LD ListItem   Other-0.121137 %65 %
185Uses Schema breadcrumblist   Other-0.121140 %65 %
186Uses JSON-LD Audience-0.12112 %14 %
187Uses Schema website   Other-0.121137 %59 %
188Number Of Claimed Brands   Other-0.12137324 %71 %
189Uses JSON-LD AggregateRating   Other-0.12118 %61 %
190Uses JSON-LD BreadcrumbList   Other-0.121136 %66 %
191Uses Schema listitem   Other-0.121141 %66 %
192Uses JSON-LD GeoCircle   Other-0.12112 %17 %
193Number of Nofollow Links   Authority-0.1272528 %75 %
194Uses JSON-LD ItemList   Other-0.12113 %39 %
195Uses Schema geocircle   Other-0.12112 %17 %
196LSI Words in H3 Tags   Relevancy-0.121181644 %89 %
197Uses Schema addressregion   Other-0.121118 %61 %
198Average Words Per Sentence   Size-0.123453881 %75 %
199Uses Schema inlanguage   Other-0.121131 %55 %
200Uses JSON-LD ratingValue   Other-0.12119 %57 %