Measures 143870 SEO Factors

142148 Built-In SEO Factors

133036 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-0.2497831078 %81 %
2Load Time Milliseconds   Performance-0.249090207180 %92 %
3Search Result Domain is .com, .net, or .org   Other-0.23115 %74 %
4Number of Distinct Entities Used   Diversity-0.23732875 %96 %
5Number of Top 50 Shared Factors Used   Diversity-0.23161293 %90 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392895 %92 %
7Number of Unique Variations Used   Diversity-0.2235773 %88 %
8Entities in Title Tag   Relevancy-0.227365 %91 %
9Number of Top 200 Shared Factors Used   Diversity-0.22523895 %92 %
10Search Result Domain is .com   Other-0.22115 %74 %
11Number of Includes   Technology-0.21612774 %81 %
12Variations in Body Tags   Relevancy-0.212892491672 %87 %
13Number of CSS Includes   Technology-0.2191067 %78 %
14Number of Factors Used   Diversity-0.228417495 %86 %
15Entities in Sentences   Relevancy-0.281214471 %93 %
16Entities in the HTML Tag   Relevancy-0.281314772 %93 %
17Variations in HTML Tags   Relevancy-0.212892490471 %89 %
18Variations in Div Tags   Relevancy-0.24668034768 %88 %
19Variations in H1, H2, and H3 Tags   Relevancy-0.2191761 %83 %
20Variations in H1-H6 Tags   Relevancy-0.19218862 %84 %
21Variations in P Tags   Relevancy-0.1964435264 %85 %
22Term Frequency   Relevancy-0.196371 %89 %
23Variations in the Title Tag   Relevancy-0.1915259 %83 %
24Variations in H1 and H2 Tags   Relevancy-0.1998459 %85 %
25Variations in Sentences   Relevancy-0.1934814665 %87 %
26Variations in Search Result Display URL   Relevancy-0.1914275 %81 %
27Number of Facebook Pages   Authority-0.196257 %81 %
28Variations in Search Result Link Text   Relevancy-0.1914275 %81 %
29Variations in LI Tags   Relevancy-0.1931243362 %84 %
30Entities in H2 Tags-0.1933752 %90 %
31Has JSON-LD Schema Markup   Relevancy-0.181151 %75 %
32LSI Words in Title Tag   Relevancy-0.1814563 %90 %
33LSI Words in Sentences   Relevancy-0.18310678765 %93 %
34Variations in H1 Tags   Relevancy-0.1818151 %83 %
35Entities in H1 Tags-0.1817255 %89 %
36Search Result Number of Dirs in Path   Other-0.183268 %76 %
37Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821242 %84 %
38Variation Count in Top 30KB   Relevancy-0.18105395661 %81 %
39Leading Variations in H1-H6 Tags   Relevancy-0.1825244 %85 %
40Variations in Script Tags   Relevancy-0.183600225657 %86 %
41Variations in A Tags   Relevancy-0.1856265261 %83 %
42Clean Keyword Density in the HTML Tag   Relevancy-0.18367563 %79 %
43Entities in Meta Description Tag   Relevancy-0.1820355 %87 %
44Variations in Meta Description   Relevancy-0.1877250 %79 %
45Number of Referring Domains   Authority-0.1712667247 %66 %
46Word Count   Size-0.174300152979 %84 %
47Unabridged Word Count   Size-0.175266195079 %83 %
48Number of HTML Tags   Size-0.172800115079 %87 %
49Exact Matches in the HTML Tag   Relevancy-0.175011928 %86 %
50Number of Instagram Pages   Authority-0.1733242 %79 %
51Page Size Kilobytes   Size-0.17106128579 %83 %
52Variations in H2 Tags   Relevancy-0.1787343 %81 %
53Number of P Tags   Size-0.171324175 %83 %
54Entities in H3 Tags-0.1727743 %91 %
55Percentage of DoFollow Links   Authority-0.171008176 %89 %
56Number of Sentences   Size-0.1755812777 %85 %
57Clean Text Kilobytes   Size-0.17441375 %84 %
58Variation Density in Top 30KB   Relevancy-0.17571553 %76 %
59Percentage of DoFollow Internal Links   Authority-0.17927175 %85 %
60Variations in OpenGraph Title   Relevancy-0.1710148 %79 %
61Number of Backlinks   Authority-0.17125026309447 %69 %
62Variations in ALT Attributes   Relevancy-0.17301842 %82 %
63Number of Images   Size-0.171303375 %85 %
64Number of Do Follow Backlinks   Authority-0.17119893257443 %68 %
65Leading Variations in H1 Tags   Relevancy-0.162128 %80 %
66Number of Prices   Size-0.169947665 %84 %
67LSI Words in Meta Description Tag   Relevancy-0.16291052 %88 %
68Title Tag Has Entities   Relevancy-0.161166 %87 %
69Variations in Span Tags   Relevancy-0.1616521448 %84 %
70TF/IDF   Relevancy-0.161152 %82 %
71Inline JavaScript Kilobytes   Size-0.165088076 %83 %
72LSI Words in H1 Tags   Relevancy-0.1618557 %92 %
73Variations in OpenGraph Description   Relevancy-0.1665243 %79 %
74Leading Variations in Title Tag   Relevancy-0.161131 %81 %
75Variations in Search Result Document File Name   Relevancy-0.1610141 %78 %
76Flesch Kincaid Reading Grade Level   Other-0.167191 %87 %
77Number of Images with ALT Text   Size-0.161002371 %87 %
78Inline CSS Kilobytes   Size-0.162126160 %80 %
79Variations in Main Tags   Relevancy-0.162464315936 %84 %
80Number of Questions   Size-0.16541163 %79 %
81Number of HTTPS Links   Authority-0.1644315876 %83 %
82Has Entities in H1 Tags   Relevancy-0.161156 %82 %
83Number of JavaScript Includes   Technology-0.16471875 %80 %
84Number of Heading Tags   Size-0.16562375 %82 %
85Number of Internal Links   Authority-0.1643214576 %84 %
86Search Result Uses HTTPS   Other-0.161178 %84 %
87Number of No Follow Backlinks   Authority-0.162863159734 %64 %
88Number of Links   Authority-0.1644315976 %83 %
89Number of DoFollow Links   Authority-0.1643515576 %83 %
90Search Result Host Length   Size-0.16251678 %77 %
91Number of Absolute URLs   Authority-0.16120728078 %81 %
92Search Result Domain Length   Size-0.16251678 %77 %
93Number of Forms   Technology-0.1512356 %78 %
94LSI Words in H2 Tags   Relevancy-0.15802456 %89 %
95Variations in Nav Tags   Relevancy-0.1599437442 %81 %
96Has Meta Viewport   Technology-0.151176 %82 %
97Has Privacy Policy   Trust-0.151157 %76 %
98Number of HTML Comments   Size-0.156816171 %82 %
99Variations in Search Result URL Path   Relevancy-0.158143 %81 %
100Number of H2 Tags   Size-0.1528868 %82 %
101Has Entities in H2 Tags   Relevancy-0.151153 %82 %
102Variations in First 100 Words   Relevancy-0.15367656 %82 %
103Number of LinkedIn Pages   Authority-0.155131 %79 %
104Number of H1 Tags   Size-0.154270 %86 %
105Has Form   Technology-0.151155 %73 %
106Title Word Count   Size-0.1513777 %74 %
107Has Contact Page   Trust-0.151161 %75 %
108Number of External Links   Authority-0.15511572 %82 %
109Title Length   Size-0.15874877 %76 %
110Variations in the Canonical URL   Relevancy-0.15104244 %80 %
111Number Of JSON-LD Types   Relevancy-0.151241555 %80 %
112Variations in H3 Tags   Relevancy-0.15134332 %79 %
113Number of Images without ALT Text   Size-0.15891158 %84 %
114Has Canonical URL   Authority-0.151167 %78 %
115Number of DoFollow External Links   Authority-0.15471371 %83 %
116Number of Facebook Accounts   Authority-0.152128 %78 %
117Average Words Per Sentence   Size-0.142753476 %78 %
118Has Meta Charset   Technology-0.141172 %78 %
119Number of H3 Tags   Size-0.1435960 %80 %
120Meta Description Tag Has Entities   Relevancy-0.141156 %78 %
121Variations in Distinct A Tag HREF Attributes   Relevancy-0.1416083054 %87 %
122Variations in Absolute URLs   Relevancy-0.141415711254 %85 %
123Percentage of DoFollow External Links   Authority-0.14481169 %79 %
124Variations in A Tag HREF Attributes   Relevancy-0.1424104853 %88 %
125Is Store Page   Other-0.141146 %68 %
126Exact Matches in H1-H6 Tags   Relevancy-0.1411119 %84 %
127Number of Questions In Headings   Size-0.147237 %78 %
128Has FavIcon   Technology-0.141171 %81 %
129Meta Description Length   Size-0.1441911763 %77 %
130Word Count in Meta Description   Size-0.14651963 %76 %
131Has Meta Description   Relevancy-0.141162 %75 %
132Number of Social Pages   Authority-0.1436463 %80 %
133Is Purchase Page   Other-0.141144 %75 %
134Has Schema Markup   Relevancy-0.141160 %72 %
135Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %76 %
136Variations in Search Result URL   Relevancy-0.1424150 %76 %
137Number of Email Addresses   Trust-0.1470443 %79 %
138Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
139Leading Variations in H2 Tags   Relevancy-0.149121 %80 %
140Uses JSON-LD name   Other-0.141152 %72 %
141Variations in Footer Tags   Relevancy-0.1454563132 %79 %
142Exact Matches in Top 30KB   Relevancy-0.1433218 %80 %
143Number of Twitter Accounts   Authority-0.142126 %72 %
144Exact Matches in Sentences   Relevancy-0.1461320 %87 %
145Variations in Section Tags   Relevancy-0.1427962436 %84 %
146Entities in H4 Tags-0.1413222 %87 %
147Variations in TITLE Attributes   Relevancy-0.14302632 %79 %
148Has Entities in H3 Tags   Relevancy-0.141144 %81 %
149Headings Has Question   Other-0.141136 %72 %
150LSI Words in H3 Tags   Relevancy-0.141132348 %88 %
151Uses Schema name   Other-0.141159 %64 %
152Has Copyright   Trust-0.141159 %70 %
153Has Terms of Service   Trust-0.141138 %67 %
154Has Email   Trust-0.131143 %72 %
155Exact Matches in Title Tag   Relevancy-0.132117 %82 %
156Number of US Phone Numbers   Trust-0.138301341 %82 %
157Has Meta Twitter Card   Authority-0.131147 %64 %
158Variations in Meta Twitter Content   Relevancy-0.135121 %71 %
159Uses Schema product   Other-0.131110 %51 %
160Number of H4 Tags   Size-0.1323438 %75 %
161Variations making whole A Tags   Relevancy-0.1383226 %78 %
162Uses Schema offer   Other-0.13119 %51 %
163Variations in Strong Tags   Relevancy-0.1393224 %79 %
164Has OpenGraph Type   Relevancy-0.131157 %70 %
165Variations Making Whole LI Tags   Relevancy-0.135123 %78 %
166Variations in Meta Twitter Description   Relevancy-0.1341119 %72 %
167Uses Schema sku   Other-0.13117 %31 %
168Uses Schema pricecurrency   Other-0.13119 %48 %
169Number of Social Accounts   Authority-0.135244 %77 %
170Uses Schema url   Other-0.131154 %61 %
171Uses JSON-LD url   Other-0.131146 %72 %
172Uses JSON-LD Offer   Other-0.13119 %59 %
173Uses Schema listitem   Other-0.131141 %58 %
174Number of Questions In H2 Tags   Size-0.134123 %74 %
175Uses JSON-LD priceCurrency   Other-0.13119 %55 %
176Uses Schema availability   Other-0.13118 %41 %
177Has OpenGraph Image   Relevancy-0.131149 %70 %
178Variations making whole H1 Tags   Relevancy-0.12119 %74 %
179Uses JSON-LD price   Other-0.12117 %49 %
180Uses JSON-LD sku   Other-0.12116 %37 %
181Search Result URL Length   Size-0.121046496 %57 %
182Uses JSON-LD description   Other-0.121140 %68 %
183Variations Making Whole Span Tags   Relevancy-0.125119 %81 %
184Uses JSON-LD Product   Other-0.12119 %59 %
185Is Home Page   Other-0.121121 %38 %
186Uses JSON-LD availability   Other-0.12118 %47 %
187Uses Schema description   Other-0.121145 %59 %
188Uses Schema breadcrumblist   Other-0.121140 %58 %
189Number Of Claimed Brands   Other-0.1212223 %76 %
190Uses Schema pricevaliduntil   Other-0.12117 %23 %
191Leading Variations in H3 Tags   Relevancy-0.1211115 %77 %
192Has US Phone Number   Trust-0.121139 %70 %
193Uses Schema aggregaterating   Other-0.121110 %57 %
194Uses Schema image   Other-0.121121 %63 %
195Uses JSON-LD ListItem   Other-0.121135 %65 %
196Uses Schema price   Other-0.12117 %43 %
197Number of Questions In H3 Tags   Size-0.124117 %73 %
198Exact Matches in H1 Tags   Relevancy-0.122114 %82 %
199Uses JSON-LD category   Other-0.12115 %34 %
200Variations in I Tags   Relevancy-0.12259422 %75 %