Measures 150160 SEO Factors

148438 Built-In SEO Factors

139240 On-page SEO Factors

9198 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 %
1Load Time Milliseconds   Performance-0.274874187677 %84 %
2Number of Unique LSI Words Used   Diversity-0.2680227475 %89 %
3Number of Unique Variations Used   Diversity-0.2520772 %84 %
4Number of Top 50 Shared Factors Used   Diversity-0.25151288 %89 %
5Number of Top 100 Shared Factors Used   Diversity-0.25372889 %91 %
6Search Result Domain is .com, .net, or .org   Other-0.24117 %80 %
7Variations in H1-H6 Tags   Relevancy-0.2420754 %82 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2414653 %82 %
9Number of Top 200 Shared Factors Used   Diversity-0.24503789 %91 %
10Variations in Body Tags   Relevancy-0.2367223771 %91 %
11Variations in H1 and H2 Tags   Relevancy-0.239351 %84 %
12Variations in HTML Tags   Relevancy-0.2367223269 %93 %
13Search Result Domain is .com   Other-0.23117 %78 %
14Variations in Div Tags   Relevancy-0.2234311464 %91 %
15Variations in P Tags   Relevancy-0.222002654 %91 %
16LSI Words in Title Tag   Relevancy-0.2114665 %89 %
17LSI Words in H1 Tags   Relevancy-0.2111552 %93 %
18Term Frequency   Relevancy-0.214369 %91 %
19LSI Words in Sentences   Relevancy-0.21231771761 %98 %
20Variations in A Tags   Relevancy-0.21742250 %87 %
21Number of Factors Used   Diversity-0.2125717289 %89 %
22Variations in Search Result Document File Name   Relevancy-0.213139 %80 %
23Variations in LI Tags   Relevancy-0.21581754 %89 %
24Variations in OpenGraph Description   Relevancy-0.213141 %71 %
25Number of DoFollow Links   Authority-0.2127313371 %82 %
26Variations in H1 Tags   Relevancy-0.213145 %89 %
27Leading Variations in H1-H6 Tags   Relevancy-0.215233 %80 %
28Number of HTTPS Links   Authority-0.2128613570 %82 %
29Variations in the Title Tag   Relevancy-0.213257 %82 %
30Variations in Sentences   Relevancy-0.21723161 %91 %
31Word Count   Size-0.22776136477 %87 %
32Number of Links   Authority-0.228613771 %82 %
33Number of HTML Tags   Size-0.22474101677 %82 %
34Number of Internal Links   Authority-0.227512469 %82 %
35Unabridged Word Count   Size-0.23248171977 %87 %
36Variations in A Tag HREF Attributes   Relevancy-0.21574548 %87 %
37Variation Count in Top 30KB   Relevancy-0.2811957 %84 %
38Variations in Span Tags   Relevancy-0.223841 %89 %
39Leading Variations in H1, H2, and H3 Tags   Relevancy-0.24132 %82 %
40Variations in Meta Description   Relevancy-0.24248 %82 %
41Number of Heading Tags   Size-0.2491963 %84 %
42Variations in OpenGraph Title   Relevancy-0.22147 %71 %
43Variations in ALT Attributes   Relevancy-0.253938 %87 %
44Number of CSS Includes   Technology-0.1917964 %71 %
45Variations in the Canonical URL   Relevancy-0.193243 %84 %
46Clean Text Kilobytes   Size-0.19251262 %89 %
47Variations in Distinct A Tag HREF Attributes   Relevancy-0.191162847 %89 %
48Number of Images with ALT Text   Size-0.19732158 %82 %
49Number of P Tags   Size-0.19933861 %89 %
50Variations in Main Tags   Relevancy-0.191565230 %84 %
51LSI Words in Meta Description Tag   Relevancy-0.18231154 %96 %
52Number of Distinct Entities Used   Diversity-0.18512561 %91 %
53Variations in Search Result Display URL   Relevancy-0.183270 %73 %
54Variations in Search Result Link Text   Relevancy-0.183270 %73 %
55Number of H2 Tags   Size-0.1811656 %87 %
56Variations in Absolute URLs   Relevancy-0.182086248 %91 %
57Number of Facebook Pages   Authority-0.184251 %80 %
58TF/IDF   Relevancy-0.181146 %91 %
59Number of Forms   Technology-0.185243 %69 %
60Number of Includes   Technology-0.18462670 %71 %
61Entities in Title Tag   Relevancy-0.187354 %89 %
62Variations in Script Tags   Relevancy-0.184777354 %87 %
63Average Words Per Sentence   Size-0.18683068 %82 %
64Variations in Nav Tags   Relevancy-0.181282536 %93 %
65Variations in Search Result URL Path   Relevancy-0.183141 %82 %
66Leading Variations in Title Tag   Relevancy-0.181123 %76 %
67Number of Referring Domains   Authority-0.1857711841 %73 %
68Exact Matches in the HTML Tag   Relevancy-0.171321430 %89 %
69Variations in H2 Tags   Relevancy-0.178336 %87 %
70Variations in Meta Twitter Content   Relevancy-0.172122 %58 %
71Entities in H1 Tags-0.175242 %91 %
72Number of Do Follow Backlinks   Authority-0.17194537410629738 %76 %
73Search Result Domain Length   Size-0.17221777 %80 %
74Search Result Host Length   Size-0.17221777 %80 %
75Title Length   Size-0.17805273 %67 %
76Has Meta Twitter Card   Authority-0.171144 %56 %
77Number of Images   Size-0.17962963 %84 %
78Number of H3 Tags   Size-0.1713748 %78 %
79Number of HTML Comments   Size-0.171664959 %76 %
80Variation Density in Top 30KB   Relevancy-0.175254 %87 %
81Variations in First 100 Words   Relevancy-0.1717656 %84 %
82Number of H1 Tags   Size-0.172159 %89 %
83Percentage of DoFollow Internal Links   Authority-0.17857070 %84 %
84Exact Matches in Sentences   Relevancy-0.1732421 %84 %
85Number of External Links   Authority-0.17281470 %87 %
86Number of Backlinks   Authority-0.17194542210926541 %80 %
87Flesch Kincaid Reading Grade Level   Other-0.176184 %82 %
88Has US Phone Number   Trust-0.171135 %76 %
89Number of H4 Tags   Size-0.1724431 %78 %
90Clean Keyword Density in the HTML Tag   Relevancy-0.177359 %76 %
91LSI Words in H2 Tags   Relevancy-0.17601748 %93 %
92Has Canonical URL   Authority-0.161163 %78 %
93Exact Matches in H1-H6 Tags   Relevancy-0.166119 %84 %
94Number of DoFollow External Links   Authority-0.16231269 %84 %
95Exact Matches in Title Tag   Relevancy-0.162119 %84 %
96Has Form   Technology-0.161145 %73 %
97Entities in Sentences   Relevancy-0.1636512052 %100 %
98Entities in the HTML Tag   Relevancy-0.1637512356 %100 %
99Number of Sentences   Size-0.1652714075 %87 %
100Percentage of DoFollow Links   Authority-0.16988070 %87 %
101Has Contact Page   Trust-0.161158 %64 %
102Has OpenGraph Type   Relevancy-0.161154 %60 %
103Number of US Phone Numbers   Trust-0.1689937 %87 %
104Variations in H3 Tags   Relevancy-0.169326 %82 %
105Search Result Number of Dirs in Path   Other-0.163270 %76 %
106LSI Words in H3 Tags   Relevancy-0.16592141 %84 %
107Variations in Search Result URL   Relevancy-0.163145 %78 %
108Variations in TITLE Attributes   Relevancy-0.1637732 %80 %
109Meta Description Length   Size-0.1619211660 %73 %
110Uses JSON-LD disambiguatingDescription-0.16113 %11 %
111Uses Schema disambiguatingdescription   Other-0.16113 %11 %
112Title Word Count   Size-0.1612874 %69 %
113Uses Schema product   Other-0.16118 %47 %
114Word Count in Meta Description   Size-0.16321960 %76 %
115Variations in Section Tags   Relevancy-0.16351330 %87 %
116Has Meta Description   Relevancy-0.161159 %76 %
117Has Schema Markup   Relevancy-0.161156 %73 %
118Leading Variations in H1 Tags   Relevancy-0.161120 %82 %
119Uses Schema availability   Other-0.16114 %49 %
120Has JSON-LD Schema Markup   Relevancy-0.161146 %87 %
121Number of JavaScript Includes   Technology-0.16361872 %71 %
122Entities in H2 Tags-0.1621539 %91 %
123Variations in Figure Tags   Relevancy-0.1544711 %76 %
124Variations in Meta Twitter Description   Relevancy-0.152120 %71 %
125Search Result Uses HTTPS   Other-0.151175 %73 %
126Entities in H3 Tags-0.1513533 %93 %
127Number of Questions In Headings   Size-0.154228 %87 %
128Has Privacy Policy   Trust-0.151153 %71 %
129Has Google Verify   Technology-0.151117 %71 %
130Entities in Meta Description Tag   Relevancy-0.158344 %87 %
131Variations in H4-H6 Tags   Relevancy-0.159216 %76 %
132Uses JSON-LD Product   Other-0.15117 %47 %
133Number of Absolute URLs   Authority-0.1592728475 %80 %
134Has Meta Robots   Other-0.151121 %78 %
135Exact Matches in Top 30KB   Relevancy-0.158218 %78 %
136Has Meta Viewport   Technology-0.151175 %78 %
137Number of No Follow Backlinks   Authority-0.15328486989131 %67 %
138Variations in Button Tags   Relevancy-0.151229 %78 %
139Uses JSON-LD description   Other-0.151139 %64 %
140Number of Images without ALT Text   Size-0.1423849 %80 %
141Variations in the last 100 words   Relevancy-0.149338 %78 %
142Is Pagination Page   Other-0.141116 %67 %
143Variations in Footer Tags   Relevancy-0.1420630 %84 %
144Uses Schema pricetype   Other-0.14111 %11 %
145Uses Schema name   Other-0.141154 %69 %
146Number of Questions   Size-0.14351158 %73 %
147Number of Facebook Accounts   Authority-0.142125 %69 %
148Uses Schema breadcrumblist   Other-0.141137 %62 %
149Page Size Kilobytes   Size-0.14100037875 %64 %
150Variations Making Whole Span Tags   Relevancy-0.143114 %82 %
151Uses JSON-LD availability   Other-0.14113 %51 %
152Uses Schema servicetype   Other-0.14114 %27 %
153Uses Schema listitem   Other-0.141138 %62 %
154Exact Matches in H1 Tags   Relevancy-0.141116 %84 %
155Number of Nofollow Links   Authority-0.1418520 %82 %
156Uses Microdata reviewBody   Other-0.14111 %13 %
157Has Meta Twitter Title   Authority-0.141127 %56 %
158Uses Schema jobtitle   Other-0.14113 %31 %
159Number Of JSON-LD Types   Relevancy-0.14251146 %89 %
160Variations in Strong Tags   Relevancy-0.146220 %78 %
161LSI Words in H4 Tags   Relevancy-0.1432725 %89 %
162Uses Schema keywords   Other-0.14119 %36 %
163Has Meta Charset   Technology-0.141164 %84 %
164Has OpenGraph Image   Relevancy-0.141151 %64 %
165Inline CSS Kilobytes   Size-0.141145860 %82 %
166Exact Matches in Meta Description   Relevancy-0.142111 %84 %
167Variations in H4 Tags   Relevancy-0.147112 %76 %
168Has FavIcon   Technology-0.141165 %64 %
169Uses Schema description   Other-0.141145 %58 %
170Uses JSON-LD name   Other-0.141146 %82 %
171Number of Instagram Pages   Authority-0.148344 %62 %
172Uses Microdata openingHours   Other-0.14111 %11 %
173Percentage of NoFollow Internal Links   Authority-0.145211 %76 %
174Has Meta Twitter Description   Authority-0.141127 %58 %
175Uses Schema item   Other-0.141129 %53 %
176Uses Schema service   Other-0.14116 %31 %
177Number of YouTube Accounts   Technology-0.13219 %71 %
178Exact Matches in A Tags   Relevancy-0.1313216 %80 %
179Leading Variations in H2 Tags   Relevancy-0.133115 %82 %
180Percentage of NoFollow Links   Authority-0.136218 %78 %
181Number of Videos   Technology-0.132111 %47 %
182Uses Schema offer   Other-0.13116 %67 %
183Uses Schema price   Other-0.13114 %49 %
184Number of Questions In H3 Tags   Size-0.132112 %82 %
185Has Entities in H3 Tags   Relevancy-0.131133 %84 %
186Has Meta Twitter Site   Authority-0.131121 %49 %
187Uses Schema localbusiness   Other-0.13118 %51 %
188Number of Email Addresses   Trust-0.1358535 %78 %
189Variations in Article Tags   Relevancy-0.1332921 %76 %
190Variations Making Whole LI Tags   Relevancy-0.132117 %76 %
191Has Entities in H4 Tags   Relevancy-0.131118 %80 %
192Uses Schema pricerange   Other-0.13119 %38 %
193Entities in H4 Tags-0.1311217 %84 %
194Uses JSON-LD FAQPage   Other-0.13117 %47 %
195Number of Prices   Size-0.133648664 %82 %
196Uses JSON-LD City   Other-0.13116 %11 %
197Uses Schema city   Other-0.13116 %11 %
198Uses Schema faqpage   Other-0.13119 %44 %
199Headings Has Question   Other-0.131129 %91 %
200Percentage of DoFollow External Links   Authority-0.13201268 %76 %