Measures 143892 SEO Factors

142170 Built-In SEO Factors

133058 On-page SEO Factors

9112 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 2025-10     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-0.2597832478 %81 %
2Load Time Milliseconds   Performance-0.249090202780 %90 %
3Number of Distinct Entities Used   Diversity-0.23732874 %96 %
4Search Result Domain is .com, .net, or .org   Other-0.23115 %74 %
5Number of Top 50 Shared Factors Used   Diversity-0.23161293 %90 %
6Number of Unique Variations Used   Diversity-0.2235773 %88 %
7Number of Top 100 Shared Factors Used   Diversity-0.22392895 %91 %
8Entities in Title Tag   Relevancy-0.227365 %92 %
9Number of Top 200 Shared Factors Used   Diversity-0.22523895 %92 %
10Search Result Domain is .com   Other-0.21115 %73 %
11Number of Includes   Technology-0.21612774 %80 %
12Variations in Body Tags   Relevancy-0.212892481272 %87 %
13Number of Factors Used   Diversity-0.228417496 %86 %
14Entities in the HTML Tag   Relevancy-0.281314871 %93 %
15Entities in Sentences   Relevancy-0.281214570 %93 %
16Variations in HTML Tags   Relevancy-0.212892480271 %88 %
17Variations in Div Tags   Relevancy-0.24668031269 %87 %
18Variations in H1-H6 Tags   Relevancy-0.2218862 %84 %
19Variations in H1, H2, and H3 Tags   Relevancy-0.2191761 %84 %
20Variations in P Tags   Relevancy-0.264434864 %85 %
21Number of CSS Includes   Technology-0.2191068 %77 %
22Term Frequency   Relevancy-0.196371 %89 %
23Variations in Sentences   Relevancy-0.1934814465 %87 %
24Variations in H1 and H2 Tags   Relevancy-0.1998459 %85 %
25Variations in the Title Tag   Relevancy-0.1915259 %83 %
26Variations in Search Result Display URL   Relevancy-0.1914275 %81 %
27Variations in Search Result Link Text   Relevancy-0.1914275 %80 %
28Variations in LI Tags   Relevancy-0.1931243162 %85 %
29LSI Words in Title Tag   Relevancy-0.1914664 %90 %
30Number of Facebook Pages   Authority-0.196258 %81 %
31Number of Referring Domains   Authority-0.1912667347 %67 %
32Entities in H2 Tags-0.1933752 %90 %
33LSI Words in Sentences   Relevancy-0.18310681165 %93 %
34Search Result Number of Dirs in Path   Other-0.183269 %77 %
35Has JSON-LD Schema Markup   Relevancy-0.181151 %74 %
36Entities in H1 Tags-0.1817255 %90 %
37Variations in H1 Tags   Relevancy-0.1818152 %83 %
38Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821242 %84 %
39Number of Backlinks   Authority-0.18221301320647 %69 %
40Variation Count in Top 30KB   Relevancy-0.18105395062 %83 %
41Clean Keyword Density in the HTML Tag   Relevancy-0.18367563 %79 %
42Leading Variations in H1-H6 Tags   Relevancy-0.1825244 %85 %
43Variations in A Tags   Relevancy-0.1856264761 %83 %
44Number of Do Follow Backlinks   Authority-0.18212575272043 %69 %
45Variations in Meta Description   Relevancy-0.1877250 %79 %
46Variations in Script Tags   Relevancy-0.183600222657 %86 %
47Word Count   Size-0.184300154679 %84 %
48Unabridged Word Count   Size-0.175266196779 %84 %
49Entities in Meta Description Tag   Relevancy-0.1720355 %87 %
50Number of HTML Tags   Size-0.172800113179 %86 %
51Exact Matches in the HTML Tag   Relevancy-0.175011929 %86 %
52Clean Text Kilobytes   Size-0.17441375 %84 %
53Variations in H2 Tags   Relevancy-0.1787344 %81 %
54Number of Sentences   Size-0.1755812678 %84 %
55Entities in H3 Tags-0.1727744 %92 %
56Variations in OpenGraph Title   Relevancy-0.1710148 %79 %
57Number of P Tags   Size-0.171324175 %83 %
58Variation Density in Top 30KB   Relevancy-0.17571554 %77 %
59Page Size Kilobytes   Size-0.17106128179 %83 %
60Percentage of DoFollow Links   Authority-0.171008176 %88 %
61Number of Instagram Pages   Authority-0.1733243 %79 %
62Number of No Follow Backlinks   Authority-0.172863154834 %65 %
63Percentage of DoFollow Internal Links   Authority-0.17927175 %84 %
64Number of Images   Size-0.171303276 %85 %
65Variations in ALT Attributes   Relevancy-0.17301842 %81 %
66Variations in Span Tags   Relevancy-0.1616521348 %84 %
67Leading Variations in H1 Tags   Relevancy-0.162127 %80 %
68Title Tag Has Entities   Relevancy-0.161166 %86 %
69Variations in OpenGraph Description   Relevancy-0.1665244 %79 %
70TF/IDF   Relevancy-0.161152 %83 %
71LSI Words in H1 Tags   Relevancy-0.1618558 %92 %
72Number of Images with ALT Text   Size-0.161002272 %86 %
73LSI Words in Meta Description Tag   Relevancy-0.16291153 %88 %
74Leading Variations in Title Tag   Relevancy-0.161130 %80 %
75Variations in Main Tags   Relevancy-0.162464314336 %85 %
76Variations in Search Result Document File Name   Relevancy-0.1610142 %78 %
77Number of HTTPS Links   Authority-0.1644315776 %84 %
78Number of Prices   Size-0.169947465 %84 %
79Has Entities in H1 Tags   Relevancy-0.161157 %83 %
80Flesch Kincaid Reading Grade Level   Other-0.167192 %87 %
81Number of Questions   Size-0.16541163 %79 %
82Inline CSS Kilobytes   Size-0.162126161 %79 %
83Inline JavaScript Kilobytes   Size-0.165087876 %83 %
84Number of Heading Tags   Size-0.16592376 %82 %
85Number of Links   Authority-0.1644315877 %84 %
86Number of DoFollow Links   Authority-0.1643515477 %84 %
87Number of Internal Links   Authority-0.1643214476 %84 %
88Number of Forms   Technology-0.1612356 %78 %
89LSI Words in H2 Tags   Relevancy-0.16802456 %89 %
90Number of JavaScript Includes   Technology-0.16471875 %80 %
91Search Result Host Length   Size-0.15251678 %75 %
92Number of H2 Tags   Size-0.1528868 %82 %
93Search Result Domain Length   Size-0.15251678 %76 %
94Search Result Uses HTTPS   Other-0.151179 %84 %
95Has Meta Viewport   Technology-0.151177 %82 %
96Number of Absolute URLs   Authority-0.15120727678 %81 %
97Variations in Nav Tags   Relevancy-0.1599436642 %81 %
98Number of HTML Comments   Size-0.156815871 %82 %
99Number of External Links   Authority-0.15521573 %83 %
100Variations in Search Result URL Path   Relevancy-0.158143 %81 %
101Has Entities in H2 Tags   Relevancy-0.151153 %81 %
102Variations in First 100 Words   Relevancy-0.15367656 %83 %
103Number of LinkedIn Pages   Authority-0.155131 %80 %
104Has Privacy Policy   Trust-0.151157 %76 %
105Has Form   Technology-0.151155 %74 %
106Number of DoFollow External Links   Authority-0.15471472 %84 %
107Number of H1 Tags   Size-0.154270 %86 %
108Title Word Count   Size-0.1513777 %74 %
109Variations in H3 Tags   Relevancy-0.15134332 %80 %
110Variations in the Canonical URL   Relevancy-0.15104245 %80 %
111Has Canonical URL   Authority-0.151167 %78 %
112Title Length   Size-0.15874877 %76 %
113Number Of JSON-LD Types   Relevancy-0.151241555 %80 %
114Variations in Distinct A Tag HREF Attributes   Relevancy-0.1516082954 %87 %
115Has Contact Page   Trust-0.151161 %75 %
116Number of H3 Tags   Size-0.1535960 %80 %
117Variations in Absolute URLs   Relevancy-0.141415710254 %85 %
118Percentage of DoFollow External Links   Authority-0.14481170 %81 %
119Average Words Per Sentence   Size-0.142753476 %79 %
120Variations in A Tag HREF Attributes   Relevancy-0.1424104654 %88 %
121Has Meta Charset   Technology-0.141172 %77 %
122Number of Images without ALT Text   Size-0.14891158 %84 %
123Exact Matches in H1-H6 Tags   Relevancy-0.1411119 %84 %
124Has FavIcon   Technology-0.141171 %80 %
125Is Store Page   Other-0.141145 %68 %
126Number of Social Pages   Authority-0.1436463 %80 %
127Has Meta Description   Relevancy-0.141162 %75 %
128Number of Questions In Headings   Size-0.147237 %79 %
129Variations making whole H1, H2, and H3 Tags   Relevancy-0.142115 %76 %
130Meta Description Tag Has Entities   Relevancy-0.141155 %78 %
131Meta Description Length   Size-0.1441911863 %77 %
132Number of Facebook Accounts   Authority-0.142128 %78 %
133Word Count in Meta Description   Size-0.14651963 %77 %
134Leading Variations in H2 Tags   Relevancy-0.149121 %80 %
135Variations in Search Result URL   Relevancy-0.1424150 %77 %
136Variations making whole H1-H6 Tags   Relevancy-0.142116 %77 %
137Is Purchase Page   Other-0.141143 %74 %
138Variations in Section Tags   Relevancy-0.1427962336 %84 %
139Has Schema Markup   Relevancy-0.141160 %72 %
140Number of Email Addresses   Trust-0.1470443 %79 %
141Number of Twitter Accounts   Authority-0.142126 %73 %
142Exact Matches in Top 30KB   Relevancy-0.1433219 %80 %
143Variations in TITLE Attributes   Relevancy-0.14302632 %79 %
144Exact Matches in Sentences   Relevancy-0.1461320 %87 %
145Headings Has Question   Other-0.141137 %71 %
146Uses JSON-LD name   Other-0.141151 %72 %
147Variations in Footer Tags   Relevancy-0.1454562732 %78 %
148LSI Words in H3 Tags   Relevancy-0.141132349 %88 %
149Has Entities in H3 Tags   Relevancy-0.141144 %81 %
150Has Terms of Service   Trust-0.141138 %68 %
151Uses Schema name   Other-0.141159 %63 %
152Entities in H4 Tags-0.1413222 %88 %
153Has Email   Trust-0.141142 %72 %
154Has Copyright   Trust-0.141159 %71 %
155Number of US Phone Numbers   Trust-0.138301242 %81 %
156Exact Matches in Title Tag   Relevancy-0.132118 %82 %
157Variations in Meta Twitter Content   Relevancy-0.135121 %71 %
158Has Meta Twitter Card   Authority-0.131148 %64 %
159Uses Schema product   Other-0.131111 %49 %
160Variations in Meta Twitter Description   Relevancy-0.1341119 %73 %
161Variations in Strong Tags   Relevancy-0.1393224 %78 %
162Variations making whole A Tags   Relevancy-0.1383227 %77 %
163Has OpenGraph Type   Relevancy-0.131157 %70 %
164Variations Making Whole LI Tags   Relevancy-0.135122 %77 %
165Number of Social Accounts   Authority-0.135244 %78 %
166Uses Schema sku   Other-0.13117 %30 %
167Uses Schema offer   Other-0.13119 %49 %
168Number of H4 Tags   Size-0.1323438 %75 %
169Uses Schema pricecurrency   Other-0.13119 %46 %
170Uses Schema url   Other-0.131154 %60 %
171Number of Questions In H2 Tags   Size-0.134123 %74 %
172Has OpenGraph Image   Relevancy-0.131149 %70 %
173Uses JSON-LD url   Other-0.131145 %72 %
174Uses Schema listitem   Other-0.131141 %57 %
175Uses JSON-LD Offer   Other-0.13119 %57 %
176Uses JSON-LD description   Other-0.131140 %67 %
177Uses Schema description   Other-0.131145 %58 %
178Uses JSON-LD price   Other-0.12117 %46 %
179Variations Making Whole Span Tags   Relevancy-0.125119 %80 %
180Uses Schema availability   Other-0.12118 %39 %
181Variations in I Tags   Relevancy-0.12259422 %76 %
182Has US Phone Number   Trust-0.121139 %69 %
183Uses JSON-LD Product   Other-0.12119 %56 %
184Uses JSON-LD sku   Other-0.12116 %36 %
185Search Result URL Length   Size-0.121046496 %58 %
186Uses JSON-LD priceCurrency   Other-0.12119 %53 %
187Variations making whole H1 Tags   Relevancy-0.12119 %75 %
188Uses Schema pricevaliduntil   Other-0.12117 %22 %
189Uses Schema breadcrumblist   Other-0.121140 %57 %
190Is Home Page   Other-0.121121 %38 %
191Leading Variations in H3 Tags   Relevancy-0.1211114 %77 %
192Uses Schema price   Other-0.12117 %41 %
193Uses JSON-LD availability   Other-0.12118 %45 %
194Uses JSON-LD ListItem   Other-0.121135 %64 %
195Number Of Claimed Brands   Other-0.1212223 %76 %
196Uses Schema image   Other-0.121121 %63 %
197Number of Nofollow Links   Authority-0.1249526 %75 %
198Exact Matches in H1 Tags   Relevancy-0.122115 %82 %
199Uses Schema aggregaterating   Other-0.121110 %55 %
200Variations in the last 100 words   Relevancy-0.12366438 %79 %