Measures 150471 SEO Factors

148749 Built-In SEO Factors

139547 On-page SEO Factors

9202 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 2026-04     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Search Result Domain is .com, .net, or .org   Other-0.23116 %80 %
2Load Time Milliseconds   Performance-0.2314022153181 %94 %
3Number of Unique LSI Words Used   Diversity-0.2389729579 %80 %
4Number of Unique Variations Used   Diversity-0.2232672 %91 %
5Number of Top 50 Shared Factors Used   Diversity-0.22161194 %94 %
6Number of Top 200 Shared Factors Used   Diversity-0.22503596 %95 %
7Number of Top 100 Shared Factors Used   Diversity-0.22382796 %95 %
8Search Result Domain is .com   Other-0.22116 %80 %
9Variations in H1-H6 Tags   Relevancy-0.2212753 %91 %
10Variations in H1 and H2 Tags   Relevancy-0.2103451 %91 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.2192753 %91 %
12Number of Distinct Entities Used   Diversity-0.2602671 %94 %
13Entities in Title Tag   Relevancy-0.27359 %93 %
14Variations in Body Tags   Relevancy-0.2123426111470 %91 %
15Variations in HTML Tags   Relevancy-0.19123426109869 %92 %
16Number of Factors Used   Diversity-0.1927116496 %93 %
17Variations in Div Tags   Relevancy-0.195727438864 %92 %
18Variations in P Tags   Relevancy-0.1926374055 %93 %
19Entities in Sentences   Relevancy-0.1981813060 %96 %
20Entities in the HTML Tag   Relevancy-0.19198513565 %96 %
21Term Frequency   Relevancy-0.196369 %91 %
22Entities in H2 Tags-0.1927745 %94 %
23Entities in H1 Tags-0.197247 %91 %
24Variations in Search Result Display URL   Relevancy-0.1816273 %84 %
25Variations in Search Result Link Text   Relevancy-0.1816273 %84 %
26Variations in H1 Tags   Relevancy-0.1813145 %87 %
27Variations in Sentences   Relevancy-0.1852136862 %92 %
28Variations in LI Tags   Relevancy-0.1831943454 %90 %
29Word Count   Size-0.186860137681 %91 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1820236 %89 %
31Unabridged Word Count   Size-0.189481188681 %91 %
32Number of HTML Tags   Size-0.18763898981 %88 %
33Variation Count in Top 30KB   Relevancy-0.1844125256 %88 %
34Variations in the Title Tag   Relevancy-0.1814256 %88 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817234 %90 %
36Variations in Search Result Document File Name   Relevancy-0.189137 %87 %
37Variations in A Tags   Relevancy-0.1859705053 %90 %
38Clean Text Kilobytes   Size-0.18591367 %90 %
39LSI Words in Sentences   Relevancy-0.17332871861 %95 %
40Variations in Meta Description   Relevancy-0.1734247 %84 %
41Number of Includes   Technology-0.17492576 %82 %
42Number of Heading Tags   Size-0.17531967 %89 %
43Number of Images with ALT Text   Size-0.171202063 %88 %
44LSI Words in Title Tag   Relevancy-0.1727665 %93 %
45Number of P Tags   Size-0.171023566 %89 %
46Variations in H2 Tags   Relevancy-0.1799337 %90 %
47Variations in Search Result URL Path   Relevancy-0.1710139 %88 %
48Number of Images   Size-0.171252768 %89 %
49Number of H1 Tags   Size-0.175162 %91 %
50Number of H2 Tags   Size-0.1716761 %91 %
51Number of Facebook Pages   Authority-0.176251 %86 %
52Number of HTTPS Links   Authority-0.1760013173 %88 %
53Number of Links   Authority-0.1760113273 %89 %
54Number of DoFollow Links   Authority-0.1759212973 %89 %
55Entities in H3 Tags-0.1728736 %95 %
56Number of Internal Links   Authority-0.1759511972 %88 %
57LSI Words in H1 Tags   Relevancy-0.1715451 %94 %
58Variations in Main Tags   Relevancy-0.172745821433 %88 %
59Variations in ALT Attributes   Relevancy-0.1712941338 %84 %
60Variations in the Canonical URL   Relevancy-0.1759240 %88 %
61Clean Keyword Density in the HTML Tag   Relevancy-0.17177561 %84 %
62TF/IDF   Relevancy-0.171147 %87 %
63Variations in Span Tags   Relevancy-0.1614821642 %91 %
64Entities in Meta Description Tag   Relevancy-0.168351 %90 %
65Has Entities in H1 Tags   Relevancy-0.161146 %88 %
66Leading Variations in Title Tag   Relevancy-0.161126 %82 %
67Variations in OpenGraph Title   Relevancy-0.1612147 %83 %
68Variations in OpenGraph Description   Relevancy-0.1632242 %83 %
69Search Result Number of Dirs in Path   Other-0.163272 %79 %
70Leading Variations in H1 Tags   Relevancy-0.162122 %85 %
71Variations in A Tag HREF Attributes   Relevancy-0.1634884548 %91 %
72Variations in Search Result URL   Relevancy-0.1619247 %84 %
73Number of CSS Includes   Technology-0.1622969 %82 %
74Variations in Script Tags   Relevancy-0.165826844456 %88 %
75Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
76Variation Density in Top 30KB   Relevancy-0.16279452 %84 %
77Percentage of DoFollow Links   Authority-0.161007874 %90 %
78Variations in Absolute URLs   Relevancy-0.161033611950 %92 %
79Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621333048 %91 %
80Number of Forms   Technology-0.1612247 %80 %
81Average Words Per Sentence   Size-0.161593271 %87 %
82Has JSON-LD Schema Markup   Relevancy-0.161148 %84 %
83Number of Referring Domains   Authority-0.16701912244 %77 %
84Has Entities in H2 Tags   Relevancy-0.161145 %90 %
85Variations in First 100 Words   Relevancy-0.16178655 %89 %
86Number of Backlinks   Authority-0.1519454221414844 %79 %
87Number of H3 Tags   Size-0.1528852 %85 %
88LSI Words in H2 Tags   Relevancy-0.15962050 %95 %
89Number of HTML Comments   Size-0.154094863 %88 %
90Search Result Domain Length   Size-0.15251681 %84 %
91Search Result Host Length   Size-0.15251681 %84 %
92Flesch Kincaid Reading Grade Level   Other-0.156193 %89 %
93Variations in Section Tags   Relevancy-0.1516112131 %89 %
94Number Of JSON-LD Types   Relevancy-0.152291850 %88 %
95Variations in Nav Tags   Relevancy-0.15107564338 %87 %
96Number of Sentences   Size-0.1566013277 %85 %
97Search Result Uses HTTPS   Other-0.151180 %84 %
98Exact Matches in the HTML Tag   Relevancy-0.154321126 %87 %
99Number of DoFollow External Links   Authority-0.15561268 %87 %
100Number of External Links   Authority-0.15591469 %89 %
101Number of Do Follow Backlinks   Authority-0.151945374941740 %78 %
102Number of Images without ALT Text   Size-0.1571851 %88 %
103Has Meta Charset   Technology-0.151168 %83 %
104LSI Words in Meta Description Tag   Relevancy-0.15551053 %92 %
105Has Form   Technology-0.151146 %78 %
106Number of Questions In Headings   Size-0.1510232 %83 %
107Has Canonical URL   Authority-0.151166 %81 %
108Number of JavaScript Includes   Technology-0.15401776 %78 %
109Number of Absolute URLs   Authority-0.15106325879 %81 %
110Number of US Phone Numbers   Trust-0.143451138 %84 %
111Variations in H3 Tags   Relevancy-0.14119328 %86 %
112Has US Phone Number   Trust-0.141139 %76 %
113Title Tag Has Entities   Relevancy-0.141159 %89 %
114Title Word Count   Size-0.1440878 %79 %
115Has Privacy Policy   Trust-0.141153 %79 %
116Inline CSS Kilobytes   Size-0.142075562 %84 %
117Number of No Follow Backlinks   Authority-0.141851383538734 %71 %
118Number of Facebook Accounts   Authority-0.143124 %80 %
119Uses JSON-LD name   Other-0.141148 %82 %
120Meta Description Length   Size-0.1454611763 %80 %
121Word Count in Meta Description   Size-0.14821962 %80 %
122Has Meta Viewport   Technology-0.141177 %83 %
123Title Length   Size-0.142365179 %79 %
124Page Size Kilobytes   Size-0.14103733579 %71 %
125Has Meta Description   Relevancy-0.141162 %79 %
126Leading Variations in H2 Tags   Relevancy-0.147117 %86 %
127Number of Social Accounts   Authority-0.147237 %85 %
128Variations in Footer Tags   Relevancy-0.1438282329 %85 %
129Uses Schema name   Other-0.141156 %74 %
130Number of LinkedIn Pages   Authority-0.143126 %84 %
131Has Schema Markup   Relevancy-0.141159 %79 %
132Variations making whole H1-H6 Tags   Relevancy-0.142111 %81 %
133Has Entities in H3 Tags   Relevancy-0.141137 %87 %
134Percentage of DoFollow External Links   Authority-0.13241167 %84 %
135Number of Social Pages   Authority-0.1320457 %81 %
136Number of Questions   Size-0.13651162 %79 %
137Number of H4 Tags   Size-0.1327330 %81 %
138Headings Has Question   Other-0.131130 %81 %
139LSI Words in H3 Tags   Relevancy-0.131062143 %91 %
140Has Contact Page   Trust-0.131156 %76 %
141Number of Instagram Pages   Authority-0.1317240 %77 %
142Variations Making Whole LI Tags   Relevancy-0.134118 %82 %
143Uses JSON-LD url   Other-0.131141 %82 %
144Meta Description Tag Has Entities   Relevancy-0.131150 %83 %
145Variations in Strong Tags   Relevancy-0.13110221 %82 %
146Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %85 %
147Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
148Number of Prices   Size-0.135199765 %80 %
149Uses JSON-LD description   Other-0.131138 %77 %
150Entities in H4 Tags-0.1314216 %89 %
151Uses JSON-LD ListItem   Other-0.131131 %76 %
152Uses Schema url   Other-0.131151 %72 %
153Has Meta Twitter Card   Authority-0.131149 %66 %
154Has FavIcon   Technology-0.131170 %73 %
155Number of Questions In H2 Tags   Size-0.136120 %79 %
156Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
157Has OpenGraph Type   Relevancy-0.131157 %73 %
158Variations making whole A Tags   Relevancy-0.13101222 %83 %
159Has OpenGraph Image   Relevancy-0.131152 %72 %
160Number of Nofollow Links   Authority-0.1322322 %81 %
161Uses Schema product   Other-0.131111 %52 %
162Number of Email Addresses   Trust-0.1358438 %82 %
163Is Article Page   Other-0.131138 %71 %
164Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
165Has Terms of Service   Trust-0.131137 %73 %
166Variations in Meta Twitter Description   Relevancy-0.1220121 %73 %
167Inline JavaScript Kilobytes   Size-0.1252415075 %70 %
168Number of Twitter Accounts   Authority-0.122119 %78 %
169Exact Matches in Sentences   Relevancy-0.1248318 %88 %
170Uses Schema organization   Other-0.121131 %73 %
171Uses Schema listitem   Other-0.121138 %68 %
172Uses JSON-LD Product   Other-0.121110 %53 %
173Uses Schema description   Other-0.121145 %69 %
174Number Of Claimed Brands   Other-0.1220221 %77 %
175Exact Matches in Top 30KB   Relevancy-0.1219115 %82 %
176Uses JSON-LD Organization   Other-0.121128 %76 %
177Is OpenGraph Type Article   Technology-0.121128 %66 %
178Variations in I Tags   Relevancy-0.12394518 %83 %
179Uses Schema breadcrumblist   Other-0.121138 %68 %
180Exact Matches in Title Tag   Relevancy-0.122115 %85 %
181Has Email   Trust-0.121137 %73 %
182Has Meta Robots   Other-0.121122 %74 %
183Percentage of NoFollow Links   Authority-0.1215220 %77 %
184Variations in TITLE Attributes   Relevancy-0.12563832 %83 %
185Variations in Article Tags   Relevancy-0.1213381420 %82 %
186Is Pagination Page   Other-0.121116 %68 %
187Search Result Summary Length   Size-0.1216315396 %70 %
188Has Google Verify   Technology-0.121119 %73 %
189Number of Questions In H3 Tags   Size-0.127115 %75 %
190Is Store Page   Other-0.121143 %67 %
191Number of HREF Lang Tags   Size-0.1257311 %76 %
192Uses JSON-LD ImageObject   Other-0.121127 %70 %
193Uses Schema unitcode   Other-0.12114 %15 %
194Variations in the last 100 words   Relevancy-0.12175439 %80 %
195Uses Schema datemodified   Other-0.121127 %64 %
196Uses JSON-LD datePublished   Other-0.121129 %68 %
197Uses JSON-LD sku   Other-0.12116 %33 %
198Uses Schema sku   Other-0.12117 %32 %
199Leading Variations in H3 Tags   Relevancy-0.1210112 %79 %
200Has Copyright   Trust-0.121161 %65 %