Measures 151180 SEO Factors

149458 Built-In SEO Factors

140243 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-0.2486225882 %79 %
2Number of Referring Domains   Authority-0.224855018941 %88 %
3Load Time Milliseconds   Performance-0.2115487158184 %89 %
4Number of Backlinks   Authority-0.21227556944192041 %87 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523795 %91 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161294 %88 %
7Number of Do Follow Backlinks   Authority-0.2225040953571837 %87 %
8Number of Top 100 Shared Factors Used   Diversity-0.2382895 %91 %
9Search Result Domain is .com, .net, or .org   Other-0.2116 %75 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2192859 %82 %
11Number of No Follow Backlinks   Authority-0.194373255747628 %83 %
12Variations in H1-H6 Tags   Relevancy-0.19231960 %82 %
13Number of Unique Variations Used   Diversity-0.19521179 %79 %
14Variations in H1 and H2 Tags   Relevancy-0.19113557 %83 %
15Variations in P Tags   Relevancy-0.1945534861 %85 %
16Clean Text Kilobytes   Size-0.19981270 %89 %
17Search Result Domain is .com   Other-0.19116 %78 %
18Unabridged Word Count   Size-0.1916706174684 %86 %
19Word Count   Size-0.193779134184 %86 %
20Number of P Tags   Size-0.191033570 %85 %
21Variations in Search Result Document File Name   Relevancy-0.1910145 %83 %
22Number of Distinct Entities Used   Diversity-0.18802874 %90 %
23Number of Images   Size-0.181362470 %85 %
24Number of Heading Tags   Size-0.181171971 %83 %
25Number of Includes   Technology-0.18522578 %78 %
26Entities in H2 Tags-0.1850649 %89 %
27Number of H2 Tags   Size-0.1821765 %84 %
28Entities in Sentences   Relevancy-0.1847712865 %91 %
29Variations in Div Tags   Relevancy-0.182826022271 %86 %
30Number of Factors Used   Diversity-0.1851918896 %86 %
31Number of H1 Tags   Size-0.183167 %87 %
32Variations in LI Tags   Relevancy-0.1842033159 %82 %
33LSI Words in Sentences   Relevancy-0.18251464464 %91 %
34Number of Images with ALT Text   Size-0.181221665 %89 %
35Entities in the HTML Tag   Relevancy-0.1848213169 %91 %
36Variations in H2 Tags   Relevancy-0.1898445 %81 %
37Has Meta Charset   Technology-0.171172 %82 %
38Number of Facebook Pages   Authority-0.177252 %86 %
39Variations in H1 Tags   Relevancy-0.1715151 %83 %
40Number of DoFollow External Links   Authority-0.17561273 %87 %
41Number of HTML Tags   Size-0.17307394484 %86 %
42Number of External Links   Authority-0.17601374 %89 %
43Variations in Body Tags   Relevancy-0.179473163477 %82 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1712244 %80 %
45Variations in Search Result URL Path   Relevancy-0.1713148 %82 %
46Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %80 %
47Number of DoFollow Links   Authority-0.1757812779 %90 %
48Number of Links   Authority-0.1758513079 %87 %
49Has JSON-LD Schema Markup   Relevancy-0.171151 %80 %
50Variations in A Tags   Relevancy-0.1745523859 %83 %
51Number of HTTPS Links   Authority-0.1758512879 %90 %
52Variations in HTML Tags   Relevancy-0.179473162475 %84 %
53Entities in H1 Tags-0.1713250 %88 %
54Entities in H3 Tags-0.1753639 %89 %
55Number of Internal Links   Authority-0.1657311778 %89 %
56Variation Count in Top 30KB   Relevancy-0.1652445265 %84 %
57LSI Words in H2 Tags   Relevancy-0.161041853 %89 %
58Entities in Title Tag   Relevancy-0.167364 %89 %
59Variations in A Tag HREF Attributes   Relevancy-0.1617404855 %85 %
60Has Entities in H2 Tags   Relevancy-0.161150 %85 %
61Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223055 %85 %
62Average Words Per Sentence   Size-0.161682776 %86 %
63Term Frequency   Relevancy-0.166376 %81 %
64Number of H3 Tags   Size-0.1638855 %82 %
65Variations in Search Result Link Text   Relevancy-0.168280 %76 %
66Variations in Sentences   Relevancy-0.1624415770 %85 %
67Number of CSS Includes   Technology-0.1624971 %78 %
68Has Entities in H1 Tags   Relevancy-0.161152 %87 %
69Number of LinkedIn Pages   Authority-0.167128 %86 %
70Variations in Search Result Display URL   Relevancy-0.168280 %80 %
71Number of HTML Comments   Size-0.167325068 %84 %
72Number of Images without ALT Text   Size-0.1546851 %84 %
73Number of Instagram Pages   Authority-0.1515241 %84 %
74Variations in Span Tags   Relevancy-0.157991246 %85 %
75Variations in Search Result URL   Relevancy-0.1522256 %78 %
76Flesch Kincaid Reading Grade Level   Other-0.156291 %88 %
77Variations in Absolute URLs   Relevancy-0.1571338860 %87 %
78Variations in Main Tags   Relevancy-0.15139239636 %83 %
79Variations in ALT Attributes   Relevancy-0.15158740 %81 %
80Variations in the Canonical URL   Relevancy-0.1562249 %81 %
81Number of Forms   Technology-0.1518246 %77 %
82Variations in Nav Tags   Relevancy-0.1572384844 %80 %
83Search Result Number of Dirs in Path   Other-0.153276 %81 %
84LSI Words in H1 Tags   Relevancy-0.1529453 %89 %
85Variations in the Title Tag   Relevancy-0.1515265 %78 %
86Number of Questions In Headings   Size-0.158237 %84 %
87Number of Sentences   Size-0.1579314382 %78 %
88Variations in H3 Tags   Relevancy-0.1592333 %80 %
89Number Of JSON-LD Types   Relevancy-0.15761354 %84 %
90Variations in First 100 Words   Relevancy-0.15184865 %84 %
91Leading Variations in H1 Tags   Relevancy-0.151128 %79 %
92Variations in OpenGraph Title   Relevancy-0.1413256 %73 %
93Number of Facebook Accounts   Authority-0.142125 %82 %
94Number of Social Pages   Authority-0.1418460 %88 %
95Has Form   Technology-0.141145 %75 %
96Percentage of DoFollow External Links   Authority-0.14321272 %82 %
97Number of Social Accounts   Authority-0.145238 %85 %
98Variations in Section Tags   Relevancy-0.1415222535 %85 %
99Headings Has Question   Other-0.141137 %80 %
100Number of Questions In H2 Tags   Size-0.143124 %79 %
101LSI Words in H3 Tags   Relevancy-0.14951844 %86 %
102Percentage of DoFollow Links   Authority-0.141008379 %82 %
103Number of US Phone Numbers   Trust-0.1411541435 %80 %
104Has Entities in H3 Tags   Relevancy-0.141140 %83 %
105Search Result Host Length   Size-0.14241784 %73 %
106Clean Keyword Density in the HTML Tag   Relevancy-0.14194568 %70 %
107TF/IDF   Relevancy-0.141157 %78 %
108Number of JavaScript Includes   Technology-0.14421780 %79 %
109Exact Matches in the HTML Tag   Relevancy-0.142641428 %83 %
110Uses JSON-LD name   Other-0.141151 %77 %
111Search Result Domain Length   Size-0.14241784 %77 %
112Search Result Uses HTTPS   Other-0.131184 %77 %
113Leading Variations in Title Tag   Relevancy-0.131132 %75 %
114Variations in Meta Description   Relevancy-0.1345254 %79 %
115Variation Density in Top 30KB   Relevancy-0.13320463 %76 %
116Search Result Summary Length   Size-0.1316015195 %75 %
117Has Meta Viewport   Technology-0.131182 %73 %
118Variations in Footer Tags   Relevancy-0.1351282535 %82 %
119Number of Twitter Accounts   Authority-0.131118 %78 %
120Has Apple Touch Icon   Technology-0.131148 %76 %
121Is Home Page   Other-0.131116 %53 %
122Has US Phone Number   Trust-0.131135 %76 %
123Inline CSS Kilobytes   Size-0.132246165 %82 %
124Entities in Meta Description Tag   Relevancy-0.138353 %84 %
125Variations making whole H1-H6 Tags   Relevancy-0.132116 %73 %
126Is Article Page   Other-0.131142 %75 %
127Has Meta Robots   Other-0.131125 %74 %
128Variations in Script Tags   Relevancy-0.133373317564 %76 %
129Leading Variations in H2 Tags   Relevancy-0.1310123 %83 %
130Number of Absolute URLs   Authority-0.13152425883 %69 %
131Number of Questions   Size-0.131011568 %70 %
132Number of H4 Tags   Size-0.1346332 %76 %
133Exact Matches in H1-H6 Tags   Relevancy-0.139119 %81 %
134Variations Making Whole LI Tags   Relevancy-0.136123 %76 %
135Variations in OpenGraph Description   Relevancy-0.1342250 %79 %
136Percentage of DoFollow Internal Links   Authority-0.13917377 %76 %
137Variations in Strong Tags   Relevancy-0.13233325 %80 %
138Exact Matches in Top 30KB   Relevancy-0.1314218 %81 %
139Number of Email Addresses   Trust-0.1341442 %80 %
140Uses JSON-LD url   Other-0.131146 %76 %
141Uses JSON-LD description   Other-0.121141 %74 %
142Uses Schema datemodified   Other-0.121132 %63 %
143Variations making whole A Tags   Relevancy-0.125127 %75 %
144Uses JSON-LD dateModified   Other-0.121131 %70 %
145Variations making whole H1, H2, and H3 Tags   Relevancy-0.121114 %74 %
146Number Of Claimed Brands   Other-0.1235223 %80 %
147Variations Making Whole Span Tags   Relevancy-0.129120 %80 %
148Number of HREF Lang Tags   Size-0.1224211 %79 %
149Has Contact Page   Trust-0.121160 %65 %
150Uses JSON-LD datePublished   Other-0.121132 %71 %
151Variations in Article Tags   Relevancy-0.1217601824 %77 %
152Title Tag Has Entities   Relevancy-0.121164 %79 %
153Uses Schema webpage   Other-0.121132 %65 %
154Uses JSON-LD representativeOfPage   Other-0.12111 %12 %
155Entities in H4 Tags-0.1210218 %84 %
156Page Size Kilobytes   Size-0.1287231883 %64 %
157Has FavIcon   Technology-0.121175 %69 %
158Has HREF Lang   Technology-0.121112 %75 %
159Number of Prices   Size-0.125699467 %78 %
160Uses Schema representativeofpage   Other-0.12111 %12 %
161Uses JSON-LD WebPage   Other-0.121129 %70 %
162LSI Words in Title Tag   Relevancy-0.1215567 %84 %
163Uses JSON-LD ListItem   Other-0.121133 %73 %
164Uses Schema organization   Other-0.121133 %69 %
165Uses JSON-LD Organization   Other-0.121130 %75 %
166LSI Words in Meta Description Tag   Relevancy-0.12281055 %86 %
167Variations in I Tags   Relevancy-0.12215419 %79 %
168Has Privacy Policy   Trust-0.121156 %68 %
169Uses JSON-LD BreadcrumbList   Other-0.121134 %73 %
170Uses Schema website   Other-0.121134 %65 %
171Number of Nofollow Links   Authority-0.1220321 %79 %
172Variations in ID Attributes   Relevancy-0.12688415 %81 %
173Uses Schema inlanguage   Other-0.121129 %63 %
174Variations in Button Tags   Relevancy-0.121065511 %78 %
175Has Canonical URL   Authority-0.121172 %71 %
176Leading Variations in H3 Tags   Relevancy-0.128116 %78 %
177Has Email   Trust-0.121142 %75 %
178Variations in the last 100 words   Relevancy-0.12187549 %75 %
179Uses JSON-LD ImageObject   Other-0.111130 %72 %
180Word Count in Meta Description   Size-0.11792067 %68 %
181Variations in H4-H6 Tags   Relevancy-0.1156216 %77 %
182Has Google Verify   Technology-0.111118 %67 %
183Number of Questions In H3 Tags   Size-0.115118 %79 %
184Has Meta Description   Relevancy-0.111166 %63 %
185Uses JSON-LD mainEntity   Other-0.11111 %16 %
186Number of Meta Generator Tags   Technology-0.112132 %72 %
187Uses JSON-LD inLanguage   Other-0.111129 %69 %
188Variations in Class Attributes   Relevancy-0.1196873920 %78 %
189Uses JSON-LD WebSite   Other-0.111131 %72 %
190Number of YouTube Accounts   Technology-0.11217 %78 %
191Number of NoFollow External Links   Authority-0.1119215 %80 %
192Has OpenGraph Type   Relevancy-0.111162 %67 %
193Meta Description Length   Size-0.1147012367 %72 %
194Is OpenGraph Type Article   Technology-0.111131 %66 %
195Exact Matches in Title Tag   Relevancy-0.112118 %79 %
196Uses Schema faqpage   Other-0.11119 %63 %
197LSI Words in H4 Tags   Relevancy-0.1149624 %80 %
198Number of H5 Tags   Size-0.1137214 %74 %
199Uses JSON-LD streetAddress   Other-0.111114 %67 %
200Is Category Page   Other-0.111113 %68 %