Measures 150355 SEO Factors

148633 Built-In SEO Factors

139432 On-page SEO Factors

9201 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 %
1Number of Unique LSI Words Used   Diversity-0.2389730379 %86 %
2Number of Unique Variations Used   Diversity-0.2320674 %88 %
3Number of Top 50 Shared Factors Used   Diversity-0.22161292 %92 %
4Load Time Milliseconds   Performance-0.2214022149681 %90 %
5Number of Top 200 Shared Factors Used   Diversity-0.22503794 %94 %
6Number of Top 100 Shared Factors Used   Diversity-0.22372894 %94 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
8Variations in Search Result Display URL   Relevancy-0.213274 %81 %
9Variations in Search Result Link Text   Relevancy-0.213274 %81 %
10Search Result Domain is .com   Other-0.2115 %77 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.217554 %88 %
12Variations in H1 and H2 Tags   Relevancy-0.210352 %90 %
13Variations in H1-H6 Tags   Relevancy-0.228655 %88 %
14Number of Distinct Entities Used   Diversity-0.2602872 %95 %
15Entities in Title Tag   Relevancy-0.27360 %93 %
16Variations in Body Tags   Relevancy-0.2111318672 %89 %
17LSI Words in Sentences   Relevancy-0.19303382064 %95 %
18Number of Factors Used   Diversity-0.1926616894 %92 %
19Variations in HTML Tags   Relevancy-0.19111318471 %90 %
20Variations in Search Result Document File Name   Relevancy-0.193140 %86 %
21Entities in Sentences   Relevancy-0.1944914262 %96 %
22Variations in P Tags   Relevancy-0.192002657 %93 %
23Entities in the HTML Tag   Relevancy-0.1945114667 %96 %
24Variations in Div Tags   Relevancy-0.194739468 %92 %
25Leading Variations in H1-H6 Tags   Relevancy-0.196236 %87 %
26Variations in H1 Tags   Relevancy-0.193147 %86 %
27Entities in H2 Tags-0.1827745 %94 %
28Entities in H1 Tags-0.185247 %92 %
29Term Frequency   Relevancy-0.184371 %88 %
30LSI Words in H1 Tags   Relevancy-0.1814555 %92 %
31Variations in the Title Tag   Relevancy-0.183159 %85 %
32Variation Count in Top 30KB   Relevancy-0.18811958 %85 %
33Variations in Sentences   Relevancy-0.181723063 %90 %
34LSI Words in Title Tag   Relevancy-0.1814669 %90 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.186134 %89 %
36Word Count   Size-0.184223148180 %89 %
37Unabridged Word Count   Size-0.188545222980 %89 %
38Variations in Search Result URL Path   Relevancy-0.183141 %84 %
39Variations in LI Tags   Relevancy-0.18761756 %92 %
40Variations in Meta Description   Relevancy-0.174247 %81 %
41Variations in A Tags   Relevancy-0.17761855 %90 %
42Number of HTML Tags   Size-0.17271399580 %83 %
43Clean Text Kilobytes   Size-0.17491566 %88 %
44Variations in H2 Tags   Relevancy-0.179337 %89 %
45Variations in the Canonical URL   Relevancy-0.176241 %88 %
46Number of Images with ALT Text   Size-0.17772062 %85 %
47Entities in H3 Tags-0.1728637 %95 %
48Variations in ALT Attributes   Relevancy-0.1753639 %82 %
49Number of Includes   Technology-0.17492475 %75 %
50Leading Variations in Title Tag   Relevancy-0.171126 %79 %
51Variations in OpenGraph Title   Relevancy-0.172149 %77 %
52LSI Words in H2 Tags   Relevancy-0.17962153 %92 %
53Variations in Span Tags   Relevancy-0.1724843 %86 %
54Variations in Search Result URL   Relevancy-0.173248 %82 %
55Number of P Tags   Size-0.16983765 %87 %
56TF/IDF   Relevancy-0.161150 %85 %
57Number of Images   Size-0.161032767 %87 %
58Number of Heading Tags   Size-0.16532066 %84 %
59Leading Variations in H1 Tags   Relevancy-0.161122 %86 %
60Clean Keyword Density in the HTML Tag   Relevancy-0.168363 %82 %
61Variation Density in Top 30KB   Relevancy-0.167253 %83 %
62Search Result Number of Dirs in Path   Other-0.163273 %77 %
63Has JSON-LD Schema Markup   Relevancy-0.161146 %83 %
64Variations in Absolute URLs   Relevancy-0.162084550 %90 %
65Exact Matches in the HTML Tag   Relevancy-0.164321227 %84 %
66Number of Facebook Pages   Authority-0.166250 %82 %
67Variations in A Tag HREF Attributes   Relevancy-0.161573449 %90 %
68Variations in OpenGraph Description   Relevancy-0.163143 %81 %
69Number of H2 Tags   Size-0.1616760 %88 %
70Variations in Distinct A Tag HREF Attributes   Relevancy-0.161162249 %90 %
71Number of HTTPS Links   Authority-0.1660013973 %89 %
72Number of Links   Authority-0.1660114073 %89 %
73Number of H1 Tags   Size-0.162162 %90 %
74Number of Questions In Headings   Size-0.1610231 %80 %
75Variations in Main Tags   Relevancy-0.162735234 %87 %
76Number of Internal Links   Authority-0.1659512672 %88 %
77Has Entities in H1 Tags   Relevancy-0.161147 %88 %
78Number of DoFollow Links   Authority-0.1659213773 %89 %
79Flesch Kincaid Reading Grade Level   Other-0.166191 %87 %
80Variations in Nav Tags   Relevancy-0.161682038 %86 %
81Entities in Meta Description Tag   Relevancy-0.158351 %87 %
82Number of Referring Domains   Authority-0.1530409944 %76 %
83Number of CSS Includes   Technology-0.1517869 %79 %
84LSI Words in Meta Description Tag   Relevancy-0.15231156 %87 %
85Variations in Script Tags   Relevancy-0.154775156 %79 %
86Variations in Section Tags   Relevancy-0.15551533 %86 %
87Number of Backlinks   Authority-0.1519454222018045 %79 %
88Variations in First 100 Words   Relevancy-0.1517558 %88 %
89Average Words Per Sentence   Size-0.151493271 %82 %
90Number of No Follow Backlinks   Authority-0.15328486209534 %69 %
91Search Result Domain Length   Size-0.15221680 %82 %
92Search Result Host Length   Size-0.15221680 %82 %
93Number of Do Follow Backlinks   Authority-0.1519453741884241 %77 %
94Search Result Uses HTTPS   Other-0.151179 %81 %
95Has Entities in H2 Tags   Relevancy-0.151146 %90 %
96Number of Sentences   Size-0.1466013277 %82 %
97Leading Variations in H2 Tags   Relevancy-0.144117 %83 %
98Number of Forms   Technology-0.149247 %74 %
99Variations in H3 Tags   Relevancy-0.1411228 %84 %
100Percentage of DoFollow Internal Links   Authority-0.14916873 %86 %
101Number Of JSON-LD Types   Relevancy-0.142291649 %87 %
102Number of H3 Tags   Size-0.1428851 %82 %
103Percentage of DoFollow Links   Authority-0.14987974 %87 %
104Number of DoFollow External Links   Authority-0.14291369 %82 %
105Number of Absolute URLs   Authority-0.1492726478 %75 %
106Headings Has Question   Other-0.141130 %79 %
107Number of External Links   Authority-0.14311570 %84 %
108Exact Matches in Sentences   Relevancy-0.1435321 %85 %
109LSI Words in H3 Tags   Relevancy-0.141062144 %88 %
110Has Meta Charset   Technology-0.141166 %81 %
111Title Tag Has Entities   Relevancy-0.141160 %85 %
112Number of Images without ALT Text   Size-0.1437851 %84 %
113Number of HTML Comments   Size-0.142334062 %85 %
114Number of H4 Tags   Size-0.1427431 %78 %
115Has Canonical URL   Authority-0.141165 %77 %
116Uses JSON-LD name   Other-0.141146 %79 %
117Has Privacy Policy   Trust-0.141153 %79 %
118Uses Schema name   Other-0.141155 %67 %
119Number of JavaScript Includes   Technology-0.14401776 %70 %
120Has Meta Viewport   Technology-0.141177 %76 %
121Entities in H4 Tags-0.1414217 %90 %
122Title Length   Size-0.141075278 %71 %
123Has Form   Technology-0.141147 %73 %
124Variations in Footer Tags   Relevancy-0.1462630 %86 %
125Meta Description Length   Size-0.1419811862 %72 %
126Variations in Strong Tags   Relevancy-0.1410222 %81 %
127Number of Questions In H2 Tags   Size-0.144121 %80 %
128Has Schema Markup   Relevancy-0.141159 %72 %
129Number of Facebook Accounts   Authority-0.133124 %75 %
130Title Word Count   Size-0.1318877 %73 %
131Word Count in Meta Description   Size-0.13331961 %72 %
132Has US Phone Number   Trust-0.131137 %73 %
133Search Result URL Length   Size-0.13916594 %57 %
134Variations Making Whole LI Tags   Relevancy-0.134118 %79 %
135Number of US Phone Numbers   Trust-0.13116938 %83 %
136Number of Social Pages   Authority-0.1320457 %75 %
137Variations making whole H1-H6 Tags   Relevancy-0.131112 %77 %
138Variations in I Tags   Relevancy-0.1314319 %81 %
139Uses JSON-LD description   Other-0.131139 %71 %
140Uses JSON-LD url   Other-0.131140 %77 %
141Number of LinkedIn Pages   Authority-0.132129 %82 %
142Variations Making Whole Span Tags   Relevancy-0.139115 %83 %
143Inline CSS Kilobytes   Size-0.132075362 %83 %
144Number of Nofollow Links   Authority-0.1318422 %80 %
145Has Meta Robots   Other-0.131122 %74 %
146Exact Matches in H1-H6 Tags   Relevancy-0.139118 %85 %
147Page Size Kilobytes   Size-0.13103733279 %66 %
148Has Meta Twitter Card   Authority-0.131149 %60 %
149Percentage of NoFollow Links   Authority-0.1315220 %76 %
150Has Contact Page   Trust-0.131157 %74 %
151Number of Instagram Pages   Authority-0.1317238 %72 %
152Exact Matches in Title Tag   Relevancy-0.132115 %80 %
153Uses Schema url   Other-0.131151 %65 %
154Number of Questions   Size-0.13651261 %74 %
155Has Entities in H3 Tags   Relevancy-0.131138 %84 %
156Has OpenGraph Type   Relevancy-0.131156 %67 %
157Uses Microdata FAQPage   Other-0.13114 %23 %
158Uses JSON-LD datePublished   Other-0.131129 %64 %
159Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %79 %
160Search Result Summary Length   Size-0.1316315294 %72 %
161Uses Microdata acceptedAnswer   Other-0.13114 %26 %
162Uses Schema acceptedanswer   Other-0.13114 %26 %
163Number of Social Accounts   Authority-0.137238 %84 %
164Is Home Page   Other-0.131113 %38 %
165Variations making whole A Tags   Relevancy-0.134123 %80 %
166Uses JSON-LD ImageObject   Other-0.121129 %63 %
167Exact Matches in Top 30KB   Relevancy-0.1212215 %80 %
168Uses Schema website   Other-0.121127 %60 %
169Is Article Page   Other-0.121139 %69 %
170LSI Words in H4 Tags   Relevancy-0.1253726 %83 %
171Uses Microdata Answer   Other-0.12114 %27 %
172Number Of Claimed Brands   Other-0.1215222 %75 %
173Number of HREF Lang Tags   Size-0.1257312 %72 %
174Percentage of DoFollow External Links   Authority-0.12241268 %81 %
175Uses Schema product   Other-0.12118 %41 %
176Uses Microdata mainEntity   Other-0.12114 %27 %
177Is OpenGraph Type Article   Technology-0.121129 %66 %
178Uses Microdata Question   Other-0.12114 %27 %
179Uses JSON-LD ListItem   Other-0.121130 %76 %
180Percentage of NoFollow Internal Links   Authority-0.126112 %74 %
181Has FavIcon   Technology-0.121169 %66 %
182Has Meta Description   Relevancy-0.121161 %73 %
183Uses JSON-LD dateModified   Other-0.121126 %63 %
184Uses Schema datemodified   Other-0.121128 %60 %
185Uses JSON-LD Product   Other-0.12118 %44 %
186Uses JSON-LD BreadcrumbList   Other-0.121130 %74 %
187Number of Email Addresses   Trust-0.1258437 %78 %
188Uses JSON-LD inLanguage   Other-0.121124 %62 %
189Variations in B Tags   Relevancy-0.1219210 %74 %
190Number of Questions In H3 Tags   Size-0.127115 %78 %
191Meta Description Tag Has Entities   Relevancy-0.121150 %79 %
192Uses Schema listitem   Other-0.121138 %67 %
193Uses Schema inlanguage   Other-0.121124 %59 %
194Uses Schema description   Other-0.121144 %65 %
195Uses JSON-LD WebSite   Other-0.121124 %69 %
196Variations in Meta Twitter Description   Relevancy-0.122121 %69 %
197Variations in Button Tags   Relevancy-0.121728 %79 %
198Number of Prices   Size-0.1236410364 %77 %
199Has OpenGraph Image   Relevancy-0.121152 %66 %
200Is Pagination Page   Other-0.121116 %66 %