Measures 151382 SEO Factors

149660 Built-In SEO Factors

140443 On-page SEO Factors

9217 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 2026-07     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-0.2975523369 %78 %
2Number of Top 100 Shared Factors Used   Diversity-0.25382784 %90 %
3Number of Top 200 Shared Factors Used   Diversity-0.25503684 %91 %
4Number of Top 50 Shared Factors Used   Diversity-0.25161184 %91 %
5Variations in H1-H6 Tags   Relevancy-0.24259945 %82 %
6Entities in Sentences   Relevancy-0.2495413954 %94 %
7Entities in the HTML Tag   Relevancy-0.24105014360 %94 %
8Number of Heading Tags   Size-0.24591958 %86 %
9Number of P Tags   Size-0.242183456 %88 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.24217844 %84 %
11Load Time Milliseconds   Performance-0.2425940222271 %86 %
12Variations in P Tags   Relevancy-0.2440146945 %88 %
13Entities in H2 Tags-0.2454736 %92 %
14Variations in H1 and H2 Tags   Relevancy-0.23123543 %84 %
15Word Count   Size-0.2312278136071 %87 %
16Clean Text Kilobytes   Size-0.232841357 %84 %
17Number of Unique Variations Used   Diversity-0.23591165 %81 %
18Number of Distinct Entities Used   Diversity-0.23592765 %93 %
19Number of Referring Domains   Authority-0.237874331 %86 %
20Unabridged Word Count   Size-0.2356122200271 %86 %
21Number of H2 Tags   Size-0.2329650 %84 %
22Variations in Search Result Document File Name   Relevancy-0.237136 %83 %
23Number of Backlinks   Authority-0.23197596272831 %87 %
24Variations in Div Tags   Relevancy-0.233158541655 %87 %
25Number of Factors Used   Diversity-0.2328316784 %86 %
26Entities in Title Tag   Relevancy-0.2310352 %91 %
27Has Meta Charset   Technology-0.231157 %80 %
28Variations in A Tags   Relevancy-0.2339775846 %83 %
29Variations in LI Tags   Relevancy-0.2315263445 %87 %
30Number of Images   Size-0.231652458 %86 %
31Number of Do Follow Backlinks   Authority-0.23188984250529 %85 %
32Has JSON-LD Schema Markup   Relevancy-0.231138 %77 %
33Number of DoFollow Links   Authority-0.2241912064 %87 %
34Number of HTML Tags   Size-0.22417296271 %88 %
35Number of Links   Authority-0.2245212464 %87 %
36Number of HTTPS Links   Authority-0.2241912264 %87 %
37Entities in H1 Tags-0.229239 %91 %
38Variation Count in Top 30KB   Relevancy-0.2254786850 %81 %
39Number of Images with ALT Text   Size-0.22851653 %86 %
40Number of Internal Links   Authority-0.2239011063 %87 %
41Number of H1 Tags   Size-0.226153 %87 %
42LSI Words in Sentences   Relevancy-0.22438657851 %92 %
43Variations in Search Result URL Path   Relevancy-0.228238 %82 %
44Variations in Body Tags   Relevancy-0.2290453112163 %86 %
45Variations in H1 Tags   Relevancy-0.2211138 %81 %
46Has Entities in H2 Tags   Relevancy-0.221138 %86 %
47Number of Facebook Pages   Authority-0.215240 %87 %
48Variations in Distinct A Tag HREF Attributes   Relevancy-0.2113453943 %86 %
49Has Entities in H1 Tags   Relevancy-0.211140 %86 %
50Variations in A Tag HREF Attributes   Relevancy-0.2122066143 %86 %
51Variations in H2 Tags   Relevancy-0.21117431 %81 %
52Search Result Number of Dirs in Path   Other-0.213265 %78 %
53Number of External Links   Authority-0.211351459 %87 %
54Variations in HTML Tags   Relevancy-0.2190453109961 %88 %
55Number of No Follow Backlinks   Authority-0.212628128021 %83 %
56Number of Includes   Technology-0.21602565 %83 %
57Entities in H3 Tags-0.2151830 %93 %
58Flesch Kincaid Reading Grade Level   Other-0.216177 %88 %
59Average Words Per Sentence   Size-0.212873161 %84 %
60Number of DoFollow External Links   Authority-0.211341258 %88 %
61Number Of JSON-LD Types   Relevancy-0.211511241 %82 %
62Number of HTML Comments   Size-0.213664755 %84 %
63Variations in Sentences   Relevancy-0.235347354 %88 %
64Variations in Absolute URLs   Relevancy-0.243999247 %85 %
65Leading Variations in H1-H6 Tags   Relevancy-0.218232 %82 %
66Leading Variations in H1, H2, and H3 Tags   Relevancy-0.211230 %83 %
67Term Frequency   Relevancy-0.26361 %85 %
68Variations in Span Tags   Relevancy-0.28341736 %88 %
69Number of Images without ALT Text   Size-0.2113942 %85 %
70Number of H3 Tags   Size-0.237843 %87 %
71Percentage of DoFollow Links   Authority-0.2997863 %80 %
72Variations in the Canonical URL   Relevancy-0.242238 %86 %
73Number of CSS Includes   Technology-0.225857 %76 %
74Clean Keyword Density in the HTML Tag   Relevancy-0.2195654 %74 %
75Variations in ALT Attributes   Relevancy-0.2170832 %78 %
76Number of Social Pages   Authority-0.223547 %85 %
77LSI Words in H2 Tags   Relevancy-0.21931639 %89 %
78Variations in Nav Tags   Relevancy-0.2118169334 %86 %
79Search Result Domain is .com, .net, or .org   Other-0.19117 %78 %
80Variations in Main Tags   Relevancy-0.191984817727 %85 %
81Variations in First 100 Words   Relevancy-0.19172852 %84 %
82Search Result Domain is .com   Other-0.19117 %76 %
83Has Meta Viewport   Technology-0.191166 %76 %
84Uses JSON-LD name   Other-0.191138 %77 %
85Variations in Search Result URL   Relevancy-0.1923246 %79 %
86Number of Forms   Technology-0.199238 %77 %
87Number of Sentences   Size-0.1976612968 %84 %
88Number of Instagram Pages   Authority-0.1921331 %83 %
89Search Result Uses HTTPS   Other-0.191170 %69 %
90Variations in H3 Tags   Relevancy-0.19131425 %82 %
91Entities in Meta Description Tag   Relevancy-0.1914344 %86 %
92LSI Words in H1 Tags   Relevancy-0.1916441 %90 %
93Number of Facebook Accounts   Authority-0.192118 %80 %
94Number of Questions In Headings   Size-0.197224 %81 %
95Variations in Footer Tags   Relevancy-0.1948963928 %81 %
96Title Tag Has Entities   Relevancy-0.191151 %79 %
97Percentage of DoFollow External Links   Authority-0.18321256 %79 %
98Has Form   Technology-0.181137 %76 %
99Number of LinkedIn Pages   Authority-0.183121 %79 %
100Has Entities in H3 Tags   Relevancy-0.181130 %86 %
101Has Apple Touch Icon   Technology-0.181135 %74 %
102Percentage of DoFollow Internal Links   Authority-0.18926863 %77 %
103Has Canonical URL   Authority-0.181156 %69 %
104Number of Social Accounts   Authority-0.185228 %85 %
105Variation Density in Top 30KB   Relevancy-0.18303550 %76 %
106Page Size Kilobytes   Size-0.1899431668 %67 %
107Variations in the Title Tag   Relevancy-0.1811250 %78 %
108Variations in Section Tags   Relevancy-0.1816063126 %87 %
109Inline CSS Kilobytes   Size-0.182055854 %83 %
110Is Article Page   Other-0.181130 %75 %
111Search Result Domain Length   Size-0.18221670 %78 %
112Search Result Host Length   Size-0.18221670 %78 %
113Variations in OpenGraph Description   Relevancy-0.1832238 %77 %
114Headings Has Question   Other-0.181125 %79 %
115Variations in Script Tags   Relevancy-0.182198623851 %83 %
116Uses JSON-LD url   Other-0.181135 %75 %
117Number of JavaScript Includes   Technology-0.18481766 %84 %
118Variations in Meta Description   Relevancy-0.1839242 %78 %
119LSI Words in Title Tag   Relevancy-0.1822552 %84 %
120Has Privacy Policy   Trust-0.181143 %70 %
121Variations in OpenGraph Title   Relevancy-0.189142 %74 %
122Uses JSON-LD description   Other-0.181130 %73 %
123Number of Absolute URLs   Authority-0.18194825269 %74 %
124Uses Schema organization   Other-0.181125 %74 %
125TF/IDF   Relevancy-0.181144 %81 %
126Has FavIcon   Technology-0.171157 %72 %
127LSI Words in H3 Tags   Relevancy-0.171701933 %89 %
128Number of Questions   Size-0.17621151 %74 %
129Has Meta Description   Relevancy-0.171150 %65 %
130Variations Making Whole LI Tags   Relevancy-0.175119 %79 %
131Variations making whole A Tags   Relevancy-0.175122 %80 %
132Variations Making Whole Span Tags   Relevancy-0.175115 %79 %
133Uses JSON-LD Organization   Other-0.171123 %75 %
134Variations in Search Result Display URL   Relevancy-0.1714265 %76 %
135Variations in Search Result Link Text   Relevancy-0.1714265 %76 %
136Number of H4 Tags   Size-0.1731325 %82 %
137Uses JSON-LD ListItem   Other-0.171125 %75 %
138Inline JavaScript Kilobytes   Size-0.1756113264 %68 %
139Word Count in Meta Description   Size-0.17361851 %73 %
140Has Contact Page   Trust-0.171149 %70 %
141Uses JSON-LD BreadcrumbList   Other-0.171124 %75 %
142Leading Variations in H1 Tags   Relevancy-0.171118 %76 %
143Has Schema Markup   Relevancy-0.171148 %67 %
144Uses Schema name   Other-0.161144 %67 %
145LSI Words in Meta Description Tag   Relevancy-0.1623843 %87 %
146Uses Schema datemodified   Other-0.161121 %72 %
147Meta Description Length   Size-0.1623810951 %73 %
148Uses JSON-LD datePublished   Other-0.161123 %73 %
149Uses JSON-LD dateModified   Other-0.161120 %73 %
150Title Length   Size-0.161575268 %74 %
151Number of US Phone Numbers   Trust-0.162121030 %84 %
152Variations in Strong Tags   Relevancy-0.16129317 %85 %
153Title Word Count   Size-0.1625868 %74 %
154Meta Description Tag Has Entities   Relevancy-0.161142 %74 %
155Search Result URL Length   Size-0.16946683 %59 %
156Uses Schema webpage   Other-0.161123 %72 %
157Has OpenGraph Type   Relevancy-0.161148 %69 %
158Variations in Article Tags   Relevancy-0.1611511817 %80 %
159Number of Questions In H2 Tags   Size-0.164116 %81 %
160Is OpenGraph Type Article   Technology-0.161121 %70 %
161Has US Phone Number   Trust-0.161130 %77 %
162Leading Variations in Title Tag   Relevancy-0.161122 %76 %
163Has Terms of Service   Trust-0.161132 %65 %
164Variations in the last 100 words   Relevancy-0.16179540 %75 %
165Number of Prices   Size-0.16373812756 %78 %
166Uses JSON-LD WebPage   Other-0.161122 %73 %
167Uses JSON-LD ImageObject   Other-0.161122 %76 %
168Is Store Page   Other-0.161136 %66 %
169Uses Schema url   Other-0.161140 %66 %
170Search Result Summary Length   Size-0.1616114882 %77 %
171Variations in Search Result Summary   Relevancy-0.1548366 %71 %
172Number of Twitter Accounts   Authority-0.152114 %80 %
173Is Purchase Page   Other-0.151138 %58 %
174Has OpenGraph Image   Relevancy-0.151143 %69 %
175Entities in H4 Tags-0.1511214 %89 %
176Uses Schema description   Other-0.151134 %61 %
177Number of Questions In H3 Tags   Size-0.155112 %79 %
178Has Meta Twitter Card   Authority-0.151142 %67 %
179Has Google Verify   Technology-0.151114 %72 %
180Leading Variations in H2 Tags   Relevancy-0.155116 %81 %
181Uses Schema listitem   Other-0.151129 %60 %
182Number of Email Addresses   Trust-0.1515433 %79 %
183Has DocType Tag   Technology-0.151159 %61 %
184Uses Schema breadcrumblist   Other-0.151129 %61 %
185Variations in Class Attributes   Relevancy-0.1597049118 %81 %
186Uses Schema datepublished   Other-0.151126 %59 %
187Uses Schema website   Other-0.151123 %66 %
188Has Copyright   Trust-0.151148 %60 %
189Uses JSON-LD item   Other-0.151117 %73 %
190Uses JSON-LD inLanguage   Other-0.151120 %68 %
191Has Meta Robots   Other-0.151119 %67 %
192Uses Schema inlanguage   Other-0.151121 %67 %
193Variations making whole H1-H6 Tags   Relevancy-0.152112 %78 %
194Uses Schema imageobject   Other-0.151126 %63 %
195Variations making whole H1, H2, and H3 Tags   Relevancy-0.151110 %78 %
196Leading Variations in H3 Tags   Relevancy-0.157112 %79 %
197Uses Schema item   Other-0.141122 %57 %
198Uses JSON-LD WebSite   Other-0.141121 %69 %
199Number Of Claimed Brands   Other-0.1472216 %74 %
200Uses Schema product   Other-0.14117 %47 %