Measures 151237 SEO Factors

149515 Built-In SEO Factors

140300 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-0.2486225982 %78 %
2Load Time Milliseconds   Performance-0.2115487159484 %88 %
3Number of Referring Domains   Authority-0.214855016840 %87 %
4Number of Backlinks   Authority-0.21227556943578140 %87 %
5Number of Top 50 Shared Factors Used   Diversity-0.21161294 %87 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523795 %89 %
7Number of Top 100 Shared Factors Used   Diversity-0.2382895 %89 %
8Number of Do Follow Backlinks   Authority-0.2225040953071637 %86 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2192758 %80 %
10Variations in H1-H6 Tags   Relevancy-0.19231859 %81 %
11Search Result Domain is .com, .net, or .org   Other-0.19116 %75 %
12Variations in H1 and H2 Tags   Relevancy-0.19113557 %81 %
13Number of Unique Variations Used   Diversity-0.19521178 %77 %
14Number of No Follow Backlinks   Authority-0.194373255636327 %83 %
15Variations in P Tags   Relevancy-0.1985175660 %84 %
16Search Result Domain is .com   Other-0.19116 %77 %
17Clean Text Kilobytes   Size-0.192421270 %88 %
18Entities in H2 Tags-0.1850648 %89 %
19Unabridged Word Count   Size-0.1826444181684 %86 %
20Number of P Tags   Size-0.181033569 %83 %
21Variations in Search Result Document File Name   Relevancy-0.1810145 %81 %
22Word Count   Size-0.1819186137184 %86 %
23Entities in Sentences   Relevancy-0.1847712765 %90 %
24Number of H2 Tags   Size-0.1821764 %82 %
25Number of Distinct Entities Used   Diversity-0.18802875 %90 %
26Number of Images   Size-0.181362470 %84 %
27Number of Heading Tags   Size-0.181171971 %82 %
28Entities in the HTML Tag   Relevancy-0.1848213070 %90 %
29Number of Includes   Technology-0.18522578 %76 %
30Number of H1 Tags   Size-0.184166 %84 %
31Variations in Div Tags   Relevancy-0.182826022870 %85 %
32Number of Factors Used   Diversity-0.1851918795 %83 %
33Variations in LI Tags   Relevancy-0.1842032958 %81 %
34LSI Words in Sentences   Relevancy-0.18251464564 %90 %
35Variations in H2 Tags   Relevancy-0.1898444 %80 %
36Number of Images with ALT Text   Size-0.171221665 %88 %
37Has Meta Charset   Technology-0.171171 %79 %
38Variations in H1 Tags   Relevancy-0.1715151 %80 %
39Number of Facebook Pages   Authority-0.1714251 %85 %
40Variations in Search Result URL Path   Relevancy-0.1713147 %80 %
41Number of DoFollow External Links   Authority-0.17561272 %86 %
42Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %78 %
43Number of HTML Tags   Size-0.172214896084 %85 %
44Entities in H1 Tags-0.1713249 %88 %
45Variations in Body Tags   Relevancy-0.179473178176 %81 %
46Leading Variations in H1-H6 Tags   Relevancy-0.1712243 %79 %
47Number of External Links   Authority-0.17601373 %88 %
48Entities in H3 Tags-0.1753639 %89 %
49Number of DoFollow Links   Authority-0.1757812678 %88 %
50Variation Count in Top 30KB   Relevancy-0.1652445465 %82 %
51Variations in A Tags   Relevancy-0.1645523859 %81 %
52Number of Links   Authority-0.1658512878 %86 %
53Has JSON-LD Schema Markup   Relevancy-0.161150 %78 %
54Number of HTTPS Links   Authority-0.1658512778 %88 %
55Entities in Title Tag   Relevancy-0.167363 %89 %
56Variations in HTML Tags   Relevancy-0.169473176474 %83 %
57LSI Words in H2 Tags   Relevancy-0.161041852 %88 %
58Has Entities in H2 Tags   Relevancy-0.161149 %84 %
59Number of Internal Links   Authority-0.1657311577 %88 %
60Variations in A Tag HREF Attributes   Relevancy-0.1617404854 %84 %
61Average Words Per Sentence   Size-0.169722975 %84 %
62Variations in Search Result URL   Relevancy-0.1622255 %76 %
63Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223054 %84 %
64Term Frequency   Relevancy-0.166375 %80 %
65Has Entities in H1 Tags   Relevancy-0.161151 %85 %
66Number of LinkedIn Pages   Authority-0.167128 %85 %
67Variations in Search Result Link Text   Relevancy-0.1611279 %75 %
68Variations in Sentences   Relevancy-0.1642295968 %83 %
69Number of H3 Tags   Size-0.1638854 %81 %
70Variations in Search Result Display URL   Relevancy-0.1511279 %77 %
71Number of CSS Includes   Technology-0.1524970 %75 %
72Variations in Absolute URLs   Relevancy-0.1571338759 %85 %
73Search Result Number of Dirs in Path   Other-0.153276 %79 %
74Number of HTML Comments   Size-0.157324968 %83 %
75Number of Images without ALT Text   Size-0.1546850 %84 %
76Flesch Kincaid Reading Grade Level   Other-0.156290 %86 %
77Variations in Main Tags   Relevancy-0.15139239935 %81 %
78Number of Instagram Pages   Authority-0.1519240 %84 %
79Variations in Span Tags   Relevancy-0.157991245 %85 %
80Variations in Nav Tags   Relevancy-0.1572385443 %79 %
81Variations in ALT Attributes   Relevancy-0.15158740 %79 %
82LSI Words in H1 Tags   Relevancy-0.1529453 %88 %
83Variations in the Canonical URL   Relevancy-0.1562249 %80 %
84Number of Forms   Technology-0.1518245 %76 %
85Variations in H3 Tags   Relevancy-0.1592332 %78 %
86Variations in First 100 Words   Relevancy-0.15184764 %82 %
87Variations in the Title Tag   Relevancy-0.1518264 %76 %
88Number of Questions In Headings   Size-0.1412236 %83 %
89Number of Sentences   Size-0.1486514282 %77 %
90Number Of JSON-LD Types   Relevancy-0.14761353 %82 %
91Leading Variations in H1 Tags   Relevancy-0.142127 %77 %
92Variations in OpenGraph Title   Relevancy-0.1416255 %72 %
93Has Form   Technology-0.141145 %73 %
94Number of Social Pages   Authority-0.1433459 %88 %
95Percentage of DoFollow External Links   Authority-0.14321271 %81 %
96Number of Facebook Accounts   Authority-0.142124 %81 %
97Headings Has Question   Other-0.141137 %78 %
98Clean Keyword Density in the HTML Tag   Relevancy-0.14194568 %68 %
99Number of Social Accounts   Authority-0.145237 %84 %
100Variations in Section Tags   Relevancy-0.1415222435 %84 %
101LSI Words in H3 Tags   Relevancy-0.14951844 %86 %
102Percentage of DoFollow Links   Authority-0.141008379 %80 %
103Search Result Host Length   Size-0.14251784 %71 %
104Number of US Phone Numbers   Trust-0.1411541334 %79 %
105Number of Questions In H2 Tags   Size-0.1411124 %77 %
106Has Entities in H3 Tags   Relevancy-0.141140 %82 %
107TF/IDF   Relevancy-0.142156 %77 %
108Exact Matches in the HTML Tag   Relevancy-0.142641327 %82 %
109Variations in Meta Description   Relevancy-0.1445253 %77 %
110Variation Density in Top 30KB   Relevancy-0.14320562 %74 %
111Search Result Domain Length   Size-0.14251784 %74 %
112Uses JSON-LD name   Other-0.131151 %75 %
113Number of JavaScript Includes   Technology-0.13471779 %77 %
114Search Result Uses HTTPS   Other-0.131183 %74 %
115Entities in Meta Description Tag   Relevancy-0.138353 %84 %
116Has Meta Viewport   Technology-0.131181 %71 %
117Leading Variations in Title Tag   Relevancy-0.131131 %75 %
118Search Result Summary Length   Size-0.1316015194 %73 %
119Variations in Footer Tags   Relevancy-0.1351282635 %80 %
120Has Apple Touch Icon   Technology-0.131147 %75 %
121Is Article Page   Other-0.131142 %74 %
122Inline CSS Kilobytes   Size-0.132246165 %81 %
123Has Meta Robots   Other-0.131124 %73 %
124Has US Phone Number   Trust-0.131135 %74 %
125Number of Twitter Accounts   Authority-0.131118 %77 %
126Leading Variations in H2 Tags   Relevancy-0.1310122 %80 %
127Number of Absolute URLs   Authority-0.13228226083 %69 %
128Variations making whole H1-H6 Tags   Relevancy-0.132115 %74 %
129Variations in OpenGraph Description   Relevancy-0.1342249 %76 %
130Exact Matches in H1-H6 Tags   Relevancy-0.139118 %80 %
131Variations in Script Tags   Relevancy-0.133417720763 %76 %
132Percentage of DoFollow Internal Links   Authority-0.13917277 %74 %
133Is Home Page   Other-0.131115 %52 %
134Number of Questions   Size-0.131011567 %69 %
135Variations Making Whole LI Tags   Relevancy-0.136122 %75 %
136Number of H4 Tags   Size-0.1346332 %76 %
137Exact Matches in Top 30KB   Relevancy-0.1318218 %79 %
138Uses JSON-LD url   Other-0.131146 %73 %
139Variations in Strong Tags   Relevancy-0.12233324 %78 %
140Uses Schema datemodified   Other-0.121131 %63 %
141Uses JSON-LD description   Other-0.121141 %72 %
142Variations making whole A Tags   Relevancy-0.126127 %73 %
143Number of Email Addresses   Trust-0.1241442 %79 %
144Variations making whole H1, H2, and H3 Tags   Relevancy-0.122113 %74 %
145Uses JSON-LD dateModified   Other-0.121130 %68 %
146Uses JSON-LD datePublished   Other-0.121132 %69 %
147Variations in Article Tags   Relevancy-0.1217601824 %75 %
148Entities in H4 Tags-0.1210217 %84 %
149Number Of Claimed Brands   Other-0.1235223 %77 %
150Title Tag Has Entities   Relevancy-0.121164 %77 %
151Variations Making Whole Span Tags   Relevancy-0.129119 %81 %
152Number of HREF Lang Tags   Size-0.1224211 %79 %
153Has Contact Page   Trust-0.121160 %64 %
154Page Size Kilobytes   Size-0.12109632183 %64 %
155Uses Schema webpage   Other-0.121132 %64 %
156LSI Words in Meta Description Tag   Relevancy-0.12281055 %85 %
157Has FavIcon   Technology-0.121174 %69 %
158Uses JSON-LD representativeOfPage   Other-0.12111 %11 %
159LSI Words in Title Tag   Relevancy-0.1215567 %84 %
160Uses Schema organization   Other-0.121133 %66 %
161Uses JSON-LD ListItem   Other-0.121133 %71 %
162Uses JSON-LD WebPage   Other-0.121129 %69 %
163Uses Schema website   Other-0.121133 %63 %
164Has Privacy Policy   Trust-0.121155 %67 %
165Has HREF Lang   Technology-0.121113 %74 %
166Number of Prices   Size-0.127559667 %78 %
167Uses JSON-LD BreadcrumbList   Other-0.121133 %72 %
168Word Count in Meta Description   Size-0.12792066 %68 %
169Uses Schema representativeofpage   Other-0.12111 %11 %
170Leading Variations in H3 Tags   Relevancy-0.128116 %76 %
171Uses JSON-LD Organization   Other-0.121130 %73 %
172Uses Schema inlanguage   Other-0.121128 %62 %
173Has Canonical URL   Authority-0.121171 %69 %
174Variations in the last 100 words   Relevancy-0.12187548 %74 %
175Variations in I Tags   Relevancy-0.12215419 %78 %
176Variations in Button Tags   Relevancy-0.111065511 %78 %
177Has Email   Trust-0.111142 %73 %
178Variations in ID Attributes   Relevancy-0.11688415 %79 %
179Uses JSON-LD ImageObject   Other-0.111130 %70 %
180Uses JSON-LD mainEntity   Other-0.11111 %16 %
181Number of Nofollow Links   Authority-0.1120321 %78 %
182Has Meta Description   Relevancy-0.111165 %63 %
183Number of Questions In H3 Tags   Size-0.115117 %79 %
184Uses JSON-LD inLanguage   Other-0.111128 %68 %
185Uses JSON-LD WebSite   Other-0.111130 %70 %
186Meta Description Length   Size-0.1147012266 %71 %
187Number of Meta Generator Tags   Technology-0.112132 %71 %
188Is OpenGraph Type Article   Technology-0.111131 %66 %
189Variations in H4-H6 Tags   Relevancy-0.1156216 %76 %
190Has OpenGraph Type   Relevancy-0.111162 %65 %
191Number of YouTube Accounts   Technology-0.11216 %76 %
192Has Schema Markup   Relevancy-0.111163 %61 %
193Uses Schema name   Other-0.111160 %59 %
194Has Google Verify   Technology-0.111118 %66 %
195Meta Description Tag Has Entities   Relevancy-0.111153 %71 %
196Variations in Class Attributes   Relevancy-0.1196873420 %77 %
197Number of NoFollow External Links   Authority-0.1119214 %79 %
198Title Word Count   Size-0.1123883 %67 %
199Number of H5 Tags   Size-0.1137214 %74 %
200Exact Matches in Title Tag   Relevancy-0.112117 %79 %