Measures 151205 SEO Factors

149483 Built-In SEO Factors

140268 On-page SEO Factors

9215 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 2026-06     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-0.2486226083 %79 %
2Number of Referring Domains   Authority-0.214855018241 %88 %
3Load Time Milliseconds   Performance-0.2115487156085 %89 %
4Number of Backlinks   Authority-0.21227556943976841 %87 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523895 %91 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161294 %88 %
7Number of Top 100 Shared Factors Used   Diversity-0.2382895 %90 %
8Number of Do Follow Backlinks   Authority-0.2225040953415337 %87 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2192860 %82 %
10Search Result Domain is .com, .net, or .org   Other-0.2116 %75 %
11Variations in H1-H6 Tags   Relevancy-0.2231960 %82 %
12Number of Unique Variations Used   Diversity-0.19521179 %80 %
13Variations in H1 and H2 Tags   Relevancy-0.19113558 %83 %
14Variations in P Tags   Relevancy-0.1945534862 %85 %
15Number of No Follow Backlinks   Authority-0.194373255714228 %83 %
16Search Result Domain is .com   Other-0.19116 %78 %
17Clean Text Kilobytes   Size-0.19981270 %89 %
18Unabridged Word Count   Size-0.1916706175584 %86 %
19Variations in Search Result Document File Name   Relevancy-0.1910146 %82 %
20Word Count   Size-0.193779134984 %86 %
21Number of P Tags   Size-0.191033570 %85 %
22Entities in H2 Tags-0.1850649 %89 %
23Number of Distinct Entities Used   Diversity-0.18802875 %90 %
24Entities in Sentences   Relevancy-0.1847713065 %90 %
25Number of Heading Tags   Size-0.181172071 %83 %
26Number of Images   Size-0.181362471 %85 %
27Variations in Div Tags   Relevancy-0.182826021871 %86 %
28Number of H2 Tags   Size-0.1821765 %84 %
29LSI Words in Sentences   Relevancy-0.18251465265 %91 %
30Entities in the HTML Tag   Relevancy-0.1848213270 %90 %
31Number of Includes   Technology-0.18522578 %78 %
32Number of Factors Used   Diversity-0.1851918996 %86 %
33Variations in LI Tags   Relevancy-0.1842033159 %82 %
34Number of H1 Tags   Size-0.183167 %87 %
35Variations in H2 Tags   Relevancy-0.1898445 %81 %
36Number of Images with ALT Text   Size-0.181221765 %89 %
37Variations in H1 Tags   Relevancy-0.1715152 %82 %
38Has Meta Charset   Technology-0.171172 %82 %
39Number of Facebook Pages   Authority-0.177252 %86 %
40Number of DoFollow External Links   Authority-0.17561273 %86 %
41Number of HTML Tags   Size-0.17307394485 %86 %
42Variations in Search Result URL Path   Relevancy-0.1713248 %82 %
43Variations in Body Tags   Relevancy-0.179473162177 %82 %
44Number of External Links   Authority-0.17601374 %89 %
45Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %80 %
46Leading Variations in H1-H6 Tags   Relevancy-0.1712244 %81 %
47Variations in HTML Tags   Relevancy-0.179473161176 %84 %
48Number of DoFollow Links   Authority-0.1757812779 %89 %
49Variations in A Tags   Relevancy-0.1745523860 %83 %
50Entities in H3 Tags-0.1753640 %89 %
51Entities in H1 Tags-0.1713250 %88 %
52Number of Links   Authority-0.1758513079 %87 %
53Number of HTTPS Links   Authority-0.1758512879 %90 %
54Has JSON-LD Schema Markup   Relevancy-0.171151 %80 %
55Entities in Title Tag   Relevancy-0.167364 %88 %
56LSI Words in H2 Tags   Relevancy-0.161041853 %89 %
57Variation Count in Top 30KB   Relevancy-0.1652445166 %84 %
58Number of Internal Links   Authority-0.1657311778 %89 %
59Has Entities in H2 Tags   Relevancy-0.161150 %85 %
60Variations in A Tag HREF Attributes   Relevancy-0.1617404855 %85 %
61Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223056 %85 %
62Term Frequency   Relevancy-0.166376 %81 %
63Variations in Sentences   Relevancy-0.1624415670 %84 %
64Variations in Search Result URL   Relevancy-0.1622256 %78 %
65Average Words Per Sentence   Size-0.161682776 %86 %
66Variations in Search Result Link Text   Relevancy-0.168280 %76 %
67Has Entities in H1 Tags   Relevancy-0.161152 %86 %
68Number of H3 Tags   Size-0.1638855 %82 %
69Variations in Search Result Display URL   Relevancy-0.168280 %79 %
70Number of LinkedIn Pages   Authority-0.167129 %86 %
71Variations in Absolute URLs   Relevancy-0.1671338760 %87 %
72Variations in Span Tags   Relevancy-0.157991246 %85 %
73Number of Images without ALT Text   Size-0.1546851 %85 %
74Variations in Main Tags   Relevancy-0.15139239536 %82 %
75Number of HTML Comments   Size-0.157325068 %84 %
76Number of CSS Includes   Technology-0.1524971 %76 %
77Flesch Kincaid Reading Grade Level   Other-0.156291 %87 %
78Number of Instagram Pages   Authority-0.1515241 %84 %
79Variations in ALT Attributes   Relevancy-0.15158740 %81 %
80Variations in the Canonical URL   Relevancy-0.1562250 %81 %
81Variations in Nav Tags   Relevancy-0.1572384744 %80 %
82Search Result Number of Dirs in Path   Other-0.153276 %81 %
83LSI Words in H1 Tags   Relevancy-0.1529454 %89 %
84Variations in the Title Tag   Relevancy-0.1515266 %78 %
85Number of Forms   Technology-0.1518246 %77 %
86Number of Questions In Headings   Size-0.158237 %84 %
87Number of Sentences   Size-0.1579314382 %78 %
88Variations in First 100 Words   Relevancy-0.15184866 %84 %
89Variations in H3 Tags   Relevancy-0.1592333 %80 %
90Leading Variations in H1 Tags   Relevancy-0.151128 %79 %
91Number Of JSON-LD Types   Relevancy-0.15761354 %84 %
92Variations in OpenGraph Title   Relevancy-0.1413256 %73 %
93Number of Social Pages   Authority-0.1418460 %88 %
94Variations in Section Tags   Relevancy-0.1415222536 %85 %
95Number of Facebook Accounts   Authority-0.142124 %82 %
96Has Form   Technology-0.141145 %74 %
97Headings Has Question   Other-0.141138 %80 %
98LSI Words in H3 Tags   Relevancy-0.14951844 %86 %
99Clean Keyword Density in the HTML Tag   Relevancy-0.14194569 %69 %
100Percentage of DoFollow External Links   Authority-0.14321272 %82 %
101Number of Social Accounts   Authority-0.145238 %85 %
102Number of Questions In H2 Tags   Size-0.143124 %79 %
103TF/IDF   Relevancy-0.141158 %78 %
104Number of US Phone Numbers   Trust-0.1411541435 %80 %
105Search Result Host Length   Size-0.14251784 %72 %
106Percentage of DoFollow Links   Authority-0.141008479 %81 %
107Has Entities in H3 Tags   Relevancy-0.141141 %83 %
108Exact Matches in the HTML Tag   Relevancy-0.142641428 %83 %
109Number of JavaScript Includes   Technology-0.14421780 %78 %
110Variation Density in Top 30KB   Relevancy-0.14320463 %76 %
111Variations in Meta Description   Relevancy-0.1445254 %79 %
112Search Result Domain Length   Size-0.14251784 %76 %
113Uses JSON-LD name   Other-0.131152 %77 %
114Search Result Uses HTTPS   Other-0.131184 %76 %
115Leading Variations in Title Tag   Relevancy-0.131133 %75 %
116Variations in Footer Tags   Relevancy-0.1351282536 %82 %
117Search Result Summary Length   Size-0.1316015195 %75 %
118Entities in Meta Description Tag   Relevancy-0.138354 %84 %
119Has Apple Touch Icon   Technology-0.131148 %76 %
120Has Meta Viewport   Technology-0.131182 %73 %
121Is Article Page   Other-0.131143 %75 %
122Variations making whole H1-H6 Tags   Relevancy-0.132116 %73 %
123Has US Phone Number   Trust-0.131135 %76 %
124Variations in Script Tags   Relevancy-0.133373317264 %76 %
125Leading Variations in H2 Tags   Relevancy-0.1310123 %83 %
126Number of Absolute URLs   Authority-0.13152425883 %69 %
127Inline CSS Kilobytes   Size-0.132246165 %82 %
128Number of Twitter Accounts   Authority-0.131118 %77 %
129Has Meta Robots   Other-0.131125 %74 %
130Is Home Page   Other-0.131115 %53 %
131Number of Questions   Size-0.131011568 %69 %
132Variations Making Whole LI Tags   Relevancy-0.136123 %76 %
133Variations in Strong Tags   Relevancy-0.13233325 %80 %
134Percentage of DoFollow Internal Links   Authority-0.13917377 %75 %
135Variations in OpenGraph Description   Relevancy-0.1342250 %79 %
136Exact Matches in H1-H6 Tags   Relevancy-0.139119 %81 %
137Number of H4 Tags   Size-0.1346332 %76 %
138Variations making whole A Tags   Relevancy-0.126128 %75 %
139Number of Email Addresses   Trust-0.1241442 %80 %
140Exact Matches in Top 30KB   Relevancy-0.1214218 %81 %
141Variations Making Whole Span Tags   Relevancy-0.129120 %81 %
142Uses JSON-LD url   Other-0.121146 %75 %
143Uses JSON-LD description   Other-0.121141 %74 %
144Uses Schema datemodified   Other-0.121132 %63 %
145Number Of Claimed Brands   Other-0.1235223 %79 %
146Variations making whole H1, H2, and H3 Tags   Relevancy-0.122114 %74 %
147Number of HREF Lang Tags   Size-0.1224211 %79 %
148Uses JSON-LD dateModified   Other-0.121131 %69 %
149Title Tag Has Entities   Relevancy-0.121164 %78 %
150Variations in Article Tags   Relevancy-0.1217601824 %77 %
151Has Contact Page   Trust-0.121161 %65 %
152Uses JSON-LD datePublished   Other-0.121133 %71 %
153Uses JSON-LD representativeOfPage   Other-0.12111 %12 %
154Has FavIcon   Technology-0.121175 %69 %
155LSI Words in Title Tag   Relevancy-0.1215567 %84 %
156Entities in H4 Tags-0.1210218 %84 %
157Has HREF Lang   Technology-0.121113 %75 %
158LSI Words in Meta Description Tag   Relevancy-0.12281056 %85 %
159Page Size Kilobytes   Size-0.1287231783 %64 %
160Uses Schema webpage   Other-0.121133 %65 %
161Uses Schema representativeofpage   Other-0.12111 %12 %
162Number of Prices   Size-0.125699567 %78 %
163Uses Schema organization   Other-0.121133 %69 %
164Uses JSON-LD ListItem   Other-0.121134 %73 %
165Variations in the last 100 words   Relevancy-0.12187549 %75 %
166Has Privacy Policy   Trust-0.121156 %68 %
167Variations in ID Attributes   Relevancy-0.12688415 %81 %
168Uses JSON-LD WebPage   Other-0.121129 %70 %
169Variations in I Tags   Relevancy-0.12215419 %79 %
170Uses JSON-LD Organization   Other-0.121130 %75 %
171Uses JSON-LD BreadcrumbList   Other-0.121134 %73 %
172Leading Variations in H3 Tags   Relevancy-0.128116 %77 %
173Word Count in Meta Description   Size-0.12792067 %67 %
174Number of Questions In H3 Tags   Size-0.125118 %80 %
175Variations in Button Tags   Relevancy-0.121065511 %79 %
176Uses Schema website   Other-0.121133 %65 %
177Has Email   Trust-0.121142 %75 %
178Number of Nofollow Links   Authority-0.1220321 %79 %
179Uses Schema inlanguage   Other-0.111129 %63 %
180Has Canonical URL   Authority-0.111172 %70 %
181Variations in H4-H6 Tags   Relevancy-0.1156216 %77 %
182Uses JSON-LD ImageObject   Other-0.111131 %72 %
183Uses JSON-LD mainEntity   Other-0.11111 %16 %
184Number of Meta Generator Tags   Technology-0.112132 %72 %
185Has Meta Description   Relevancy-0.111166 %63 %
186Has Google Verify   Technology-0.111118 %68 %
187Variations in Class Attributes   Relevancy-0.1196873720 %78 %
188Uses JSON-LD inLanguage   Other-0.111129 %69 %
189Meta Description Length   Size-0.1147012467 %72 %
190Number of YouTube Accounts   Technology-0.11217 %77 %
191Is OpenGraph Type Article   Technology-0.111131 %66 %
192Has OpenGraph Type   Relevancy-0.111163 %66 %
193Uses JSON-LD WebSite   Other-0.111131 %72 %
194Exact Matches in Title Tag   Relevancy-0.112118 %80 %
195Number of NoFollow External Links   Authority-0.1119215 %80 %
196Meta Description Tag Has Entities   Relevancy-0.111153 %71 %
197Uses Schema faqpage   Other-0.11119 %64 %
198Title Word Count   Size-0.1123883 %67 %
199Uses JSON-LD streetAddress   Other-0.111114 %66 %
200Is Category Page   Other-0.111114 %68 %