Measures 150820 SEO Factors

149098 Built-In SEO Factors

139890 On-page SEO Factors

9208 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 2026-06     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-0.2582624483 %81 %
2Search Result Domain is .com, .net, or .org   Other-0.22116 %77 %
3Load Time Milliseconds   Performance-0.2214200159384 %90 %
4Search Result Domain is .com   Other-0.21116 %77 %
5Number of Backlinks   Authority-0.211165169741542 %86 %
6Number of Referring Domains   Authority-0.214855019441 %88 %
7Number of Top 50 Shared Factors Used   Diversity-0.21161293 %89 %
8Number of Top 200 Shared Factors Used   Diversity-0.21503795 %90 %
9Number of Top 100 Shared Factors Used   Diversity-0.21382895 %89 %
10Number of Do Follow Backlinks   Authority-0.211063176645739 %86 %
11Variations in H1-H6 Tags   Relevancy-0.245758 %84 %
12Clean Text Kilobytes   Size-0.2981269 %87 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.237658 %84 %
14Variations in H1 and H2 Tags   Relevancy-0.216455 %85 %
15Number of Unique Variations Used   Diversity-0.251978 %80 %
16Unabridged Word Count   Size-0.1916706174683 %88 %
17Variations in P Tags   Relevancy-0.192052961 %89 %
18Word Count   Size-0.193779130883 %88 %
19Entities in Sentences   Relevancy-0.1943112065 %91 %
20LSI Words in Sentences   Relevancy-0.19251463765 %93 %
21Number of Heading Tags   Size-0.191172070 %85 %
22Number of Includes   Technology-0.19522576 %80 %
23Number of No Follow Backlinks   Authority-0.1910199375828 %84 %
24Entities in H2 Tags-0.1950648 %92 %
25Number of Distinct Entities Used   Diversity-0.19552774 %92 %
26Variations in Div Tags   Relevancy-0.195569969 %88 %
27Number of Images   Size-0.191362470 %88 %
28Entities in the HTML Tag   Relevancy-0.1943512370 %92 %
29Number of H2 Tags   Size-0.1921765 %86 %
30Variations in Search Result Document File Name   Relevancy-0.193143 %82 %
31Variations in LI Tags   Relevancy-0.191621958 %85 %
32Number of P Tags   Size-0.181033469 %87 %
33Number of H1 Tags   Size-0.183166 %91 %
34Number of Images with ALT Text   Size-0.181221764 %90 %
35Has Meta Charset   Technology-0.181170 %83 %
36Number of HTML Tags   Size-0.18307395483 %86 %
37Number of DoFollow External Links   Authority-0.18561273 %88 %
38Variations in H2 Tags   Relevancy-0.1815342 %82 %
39Number of External Links   Authority-0.18601373 %90 %
40Number of Facebook Pages   Authority-0.184253 %85 %
41Number of Factors Used   Diversity-0.1843118195 %83 %
42Variations in A Tags   Relevancy-0.181222058 %84 %
43Number of DoFollow Links   Authority-0.1857813178 %88 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1812242 %81 %
45Has JSON-LD Schema Markup   Relevancy-0.181150 %79 %
46Number of Links   Authority-0.1858513478 %88 %
47Number of HTTPS Links   Authority-0.1758513278 %89 %
48LSI Words in H2 Tags   Relevancy-0.171041854 %91 %
49Variations in H1 Tags   Relevancy-0.176149 %84 %
50Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %81 %
51Number of Internal Links   Authority-0.1757312177 %86 %
52Has Entities in H2 Tags   Relevancy-0.171150 %87 %
53Number of Instagram Pages   Authority-0.1713241 %80 %
54Average Words Per Sentence   Size-0.171682975 %89 %
55Variation Count in Top 30KB   Relevancy-0.17792164 %86 %
56Variations in Body Tags   Relevancy-0.17112222076 %83 %
57Entities in H3 Tags-0.1753638 %91 %
58Variations in A Tag HREF Attributes   Relevancy-0.172373652 %85 %
59Variations in Distinct A Tag HREF Attributes   Relevancy-0.171532253 %85 %
60Variations in HTML Tags   Relevancy-0.17112221674 %85 %
61Entities in H1 Tags-0.1713249 %90 %
62Variations in Search Result URL Path   Relevancy-0.163145 %80 %
63Number of CSS Includes   Technology-0.1620969 %78 %
64Has Entities in H1 Tags   Relevancy-0.161151 %87 %
65Number of HTML Comments   Size-0.167325068 %84 %
66Number of Images without ALT Text   Size-0.1644850 %82 %
67Entities in Title Tag   Relevancy-0.166363 %90 %
68Variations in ALT Attributes   Relevancy-0.1681638 %81 %
69Number of Forms   Technology-0.1613245 %77 %
70Variations in Main Tags   Relevancy-0.165715236 %83 %
71Variations in Span Tags   Relevancy-0.1640844 %87 %
72Number of H3 Tags   Size-0.1638853 %84 %
73Variations in Absolute URLs   Relevancy-0.163274856 %86 %
74Variations in Nav Tags   Relevancy-0.162312343 %81 %
75LSI Words in H1 Tags   Relevancy-0.1629455 %92 %
76Term Frequency   Relevancy-0.164374 %84 %
77Number of LinkedIn Pages   Authority-0.167128 %84 %
78Has Form   Technology-0.161144 %74 %
79Variations in Search Result Link Text   Relevancy-0.153278 %80 %
80Flesch Kincaid Reading Grade Level   Other-0.156291 %89 %
81Variations in Sentences   Relevancy-0.153253868 %86 %
82Variations in Search Result Display URL   Relevancy-0.153278 %81 %
83Number Of JSON-LD Types   Relevancy-0.15481253 %83 %
84Number of Facebook Accounts   Authority-0.152125 %81 %
85Search Result Number of Dirs in Path   Other-0.153275 %79 %
86Search Result Summary Length   Size-0.1515915294 %75 %
87Variations in Section Tags   Relevancy-0.15961634 %85 %
88LSI Words in H3 Tags   Relevancy-0.15951744 %88 %
89Variations in the Title Tag   Relevancy-0.154264 %80 %
90Variations in First 100 Words   Relevancy-0.1522662 %82 %
91Variations in Search Result URL   Relevancy-0.154152 %76 %
92Variations in the Canonical URL   Relevancy-0.154246 %80 %
93Leading Variations in H1 Tags   Relevancy-0.151127 %79 %
94Number of US Phone Numbers   Trust-0.1511541533 %79 %
95Variations in H3 Tags   Relevancy-0.1430331 %83 %
96Percentage of DoFollow External Links   Authority-0.14261272 %81 %
97Exact Matches in the HTML Tag   Relevancy-0.142641728 %85 %
98Number of Social Pages   Authority-0.1415460 %87 %
99Number of Questions In H2 Tags   Size-0.143123 %79 %
100Number of Social Accounts   Authority-0.143238 %83 %
101Number of Questions In Headings   Size-0.148236 %84 %
102Variations in OpenGraph Title   Relevancy-0.143155 %74 %
103Has US Phone Number   Trust-0.141133 %74 %
104Variations in Footer Tags   Relevancy-0.1461734 %83 %
105Variations making whole A Tags   Relevancy-0.145125 %75 %
106TF/IDF   Relevancy-0.141155 %81 %
107Uses JSON-LD name   Other-0.141151 %76 %
108Has Entities in H3 Tags   Relevancy-0.141139 %85 %
109Number of Sentences   Size-0.1462113281 %78 %
110Variation Density in Top 30KB   Relevancy-0.146261 %74 %
111Variations making whole H1-H6 Tags   Relevancy-0.142116 %75 %
112Number of JavaScript Includes   Technology-0.14421779 %81 %
113Is Home Page   Other-0.141114 %53 %
114Percentage of DoFollow Links   Authority-0.14998378 %82 %
115Variations Making Whole LI Tags   Relevancy-0.146121 %79 %
116Variations in Meta Description   Relevancy-0.144252 %83 %
117Leading Variations in Title Tag   Relevancy-0.141132 %77 %
118Exact Matches in Top 30KB   Relevancy-0.1414219 %79 %
119Has Meta Robots   Other-0.141124 %77 %
120Number of H4 Tags   Size-0.1446432 %78 %
121Number of Twitter Accounts   Authority-0.131118 %77 %
122Is Article Page   Other-0.131142 %74 %
123Exact Matches in H1-H6 Tags   Relevancy-0.139120 %82 %
124Search Result Host Length   Size-0.13241783 %79 %
125Headings Has Question   Other-0.131137 %79 %
126Entities in Meta Description Tag   Relevancy-0.137352 %84 %
127Search Result Domain Length   Size-0.13241783 %80 %
128Inline CSS Kilobytes   Size-0.132245964 %77 %
129Clean Keyword Density in the HTML Tag   Relevancy-0.139467 %71 %
130Search Result Uses HTTPS   Other-0.131183 %77 %
131Number of Absolute URLs   Authority-0.1361525182 %65 %
132Number Of Claimed Brands   Other-0.139223 %79 %
133Has Apple Touch Icon   Technology-0.131148 %74 %
134Has Meta Viewport   Technology-0.131181 %73 %
135Uses JSON-LD url-0.131143 %73 %
136Has Contact Page   Trust-0.131161 %66 %
137Uses JSON-LD Organization   Other-0.131131 %74 %
138Number of Questions   Size-0.13801567 %64 %
139Variations making whole H1, H2, and H3 Tags   Relevancy-0.131114 %76 %
140Title Tag Has Entities   Relevancy-0.131163 %81 %
141Has HREF Lang   Technology-0.131113 %72 %
142Variations in Strong Tags   Relevancy-0.1310224 %80 %
143Entities in H4 Tags-0.1310217 %86 %
144Leading Variations in H2 Tags   Relevancy-0.1310121 %82 %
145Percentage of DoFollow Internal Links   Authority-0.13907376 %76 %
146Variations in OpenGraph Description   Relevancy-0.123248 %80 %
147Variations Making Whole Span Tags   Relevancy-0.129118 %81 %
148Uses JSON-LD ListItem   Other-0.121133 %70 %
149Variations in Script Tags   Relevancy-0.127977662 %78 %
150Variations in I Tags   Relevancy-0.1215320 %85 %
151Uses Schema governmentorganization   Other-0.12112 %11 %
152Number of HREF Lang Tags   Size-0.1216211 %77 %
153Uses JSON-LD description   Other-0.121141 %71 %
154Number of Email Addresses   Trust-0.1230442 %79 %
155Uses Schema organization   Other-0.121133 %68 %
156LSI Words in H4 Tags   Relevancy-0.1249624 %80 %
157Number of Prices   Size-0.125698766 %77 %
158Uses JSON-LD mainEntity   Other-0.12111 %16 %
159Has FavIcon   Technology-0.121175 %68 %
160Uses JSON-LD BreadcrumbList   Other-0.121133 %70 %
161LSI Words in Title Tag   Relevancy-0.1212569 %85 %
162Uses Schema website   Other-0.121133 %62 %
163LSI Words in Meta Description Tag   Relevancy-0.12281057 %89 %
164Uses Schema image   Other-0.121118 %60 %
165Uses Schema webpage   Other-0.121133 %60 %
166Variations in H4-H6 Tags   Relevancy-0.1219115 %79 %
167Has Email   Trust-0.121143 %75 %
168Uses Schema datemodified   Other-0.121132 %61 %
169Variations in Button Tags   Relevancy-0.1234210 %79 %
170Variations in Article Tags   Relevancy-0.121151224 %79 %
171Exact Matches in Title Tag   Relevancy-0.122119 %82 %
172Uses Schema postalcode   Other-0.121115 %57 %
173Variations in ID Attributes   Relevancy-0.1212213 %83 %
174Number of Nofollow Links   Authority-0.1220321 %79 %
175Page Size Kilobytes   Size-0.1285232582 %59 %
176Has Canonical URL   Authority-0.121171 %68 %
177Uses Schema faqpage   Other-0.12118 %61 %
178Variations in the last 100 words   Relevancy-0.1210346 %75 %
179Uses JSON-LD WebSite   Other-0.121130 %70 %
180Uses JSON-LD postalCode   Other-0.121114 %63 %
181Uses JSON-LD ImageObject   Other-0.121130 %70 %
182Uses JSON-LD datePublished   Other-0.121132 %69 %
183Has Google Verify   Technology-0.121118 %65 %
184Is Category Page   Other-0.121113 %67 %
185Leading Variations in H3 Tags   Relevancy-0.128115 %77 %
186Uses Schema streetaddress   Other-0.121115 %58 %
187Uses JSON-LD dateModified   Other-0.121130 %68 %
188Has Meta Description   Relevancy-0.111166 %66 %
189Number of NoFollow External Links   Authority-0.1119214 %78 %
190Number of H5 Tags   Size-0.1112214 %76 %
191Uses JSON-LD streetAddress   Other-0.111114 %64 %
192Variations in Class Attributes   Relevancy-0.1180517 %82 %
193Uses Schema addresslocality   Other-0.111116 %59 %
194Uses JSON-LD WebPage   Other-0.111128 %69 %
195Uses Schema headline   Other-0.111120 %59 %
196Uses JSON-LD image   Other-0.111114 %68 %
197Uses Schema answer   Other-0.11119 %59 %
198Uses Schema question   Other-0.11119 %59 %
199Uses Schema postaladdress   Other-0.111117 %58 %
200Uses JSON-LD FAQPage   Other-0.11118 %65 %