Measures 150448 SEO Factors

148726 Built-In SEO Factors

139524 On-page SEO Factors

9202 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 %
1Number of Unique Variations Used   Diversity-0.2332674 %91 %
2Number of Unique LSI Words Used   Diversity-0.2289730779 %83 %
3Load Time Milliseconds   Performance-0.2214022143781 %91 %
4Number of Top 50 Shared Factors Used   Diversity-0.22161193 %94 %
5Number of Top 200 Shared Factors Used   Diversity-0.22503696 %95 %
6Number of Top 100 Shared Factors Used   Diversity-0.22382896 %95 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
8Number of Distinct Entities Used   Diversity-0.21602773 %94 %
9Search Result Domain is .com   Other-0.21116 %77 %
10Entities in Title Tag   Relevancy-0.27362 %93 %
11Variations in H1 and H2 Tags   Relevancy-0.2103452 %92 %
12Variations in Body Tags   Relevancy-0.2123426153771 %91 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.2192755 %91 %
14Variations in HTML Tags   Relevancy-0.2123426153171 %91 %
15Variations in H1-H6 Tags   Relevancy-0.2212855 %91 %
16Number of Factors Used   Diversity-0.227116896 %93 %
17Variations in P Tags   Relevancy-0.1926374958 %92 %
18Term Frequency   Relevancy-0.196372 %90 %
19Variations in Div Tags   Relevancy-0.195727452767 %91 %
20Entities in H2 Tags-0.1927747 %93 %
21Entities in Sentences   Relevancy-0.1944913662 %96 %
22Entities in the HTML Tag   Relevancy-0.1945114067 %96 %
23Variations in Sentences   Relevancy-0.1952138764 %91 %
24Entities in H1 Tags-0.197249 %91 %
25Variations in Search Result Display URL   Relevancy-0.1916274 %84 %
26Variations in Search Result Link Text   Relevancy-0.1916274 %84 %
27Variations in the Title Tag   Relevancy-0.1914259 %88 %
28LSI Words in Title Tag   Relevancy-0.1927668 %92 %
29LSI Words in Sentences   Relevancy-0.18303378063 %94 %
30Variations in H1 Tags   Relevancy-0.1813146 %88 %
31Leading Variations in H1-H6 Tags   Relevancy-0.1820237 %90 %
32Variations in Search Result Document File Name   Relevancy-0.189138 %88 %
33Variation Count in Top 30KB   Relevancy-0.1844126958 %90 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817236 %91 %
35Word Count   Size-0.184223140481 %89 %
36Unabridged Word Count   Size-0.188545194381 %89 %
37LSI Words in H1 Tags   Relevancy-0.1814554 %93 %
38Variations in LI Tags   Relevancy-0.1831944256 %92 %
39Number of HTML Tags   Size-0.18271398281 %85 %
40Variations in A Tags   Relevancy-0.1859706655 %90 %
41Variations in H2 Tags   Relevancy-0.1799339 %91 %
42Variations in Meta Description   Relevancy-0.1734248 %86 %
43Number of Includes   Technology-0.17492575 %81 %
44Clean Text Kilobytes   Size-0.17491366 %87 %
45Variations in Search Result URL Path   Relevancy-0.1710140 %88 %
46Variations in OpenGraph Title   Relevancy-0.1712149 %82 %
47TF/IDF   Relevancy-0.171150 %88 %
48Entities in Meta Description Tag   Relevancy-0.178354 %90 %
49Entities in H3 Tags-0.1728739 %94 %
50Number of Images with ALT Text   Size-0.171202163 %85 %
51Clean Keyword Density in the HTML Tag   Relevancy-0.17177562 %86 %
52Number of Facebook Pages   Authority-0.176251 %86 %
53Number of P Tags   Size-0.17993666 %88 %
54Search Result Number of Dirs in Path   Other-0.173273 %78 %
55Variations in the Canonical URL   Relevancy-0.1759242 %88 %
56Variations in Script Tags   Relevancy-0.175826862658 %86 %
57Leading Variations in Title Tag   Relevancy-0.171127 %81 %
58Number of Heading Tags   Size-0.16532067 %88 %
59Number of Images   Size-0.161252968 %87 %
60Variations in OpenGraph Description   Relevancy-0.1632243 %84 %
61Variations in ALT Attributes   Relevancy-0.1612941640 %83 %
62Has Entities in H1 Tags   Relevancy-0.161149 %88 %
63Number of H2 Tags   Size-0.1616761 %89 %
64Number of HTTPS Links   Authority-0.1660013273 %87 %
65Variations in Span Tags   Relevancy-0.1614822044 %89 %
66Variation Density in Top 30KB   Relevancy-0.16279554 %87 %
67Number of Links   Authority-0.1660113373 %87 %
68Number of Internal Links   Authority-0.1659512072 %87 %
69Number of DoFollow Links   Authority-0.1659213073 %88 %
70LSI Words in H2 Tags   Relevancy-0.16962252 %94 %
71Number of H1 Tags   Size-0.165162 %91 %
72Number of CSS Includes   Technology-0.1622969 %81 %
73Variations in Main Tags   Relevancy-0.162745829133 %89 %
74Variations in Absolute URLs   Relevancy-0.161033615551 %93 %
75Variations in Search Result URL   Relevancy-0.1619248 %84 %
76Has JSON-LD Schema Markup   Relevancy-0.161148 %84 %
77Leading Variations in H1 Tags   Relevancy-0.162123 %87 %
78Percentage of DoFollow Internal Links   Authority-0.16946872 %86 %
79Flesch Kincaid Reading Grade Level   Other-0.166193 %90 %
80Variations in A Tag HREF Attributes   Relevancy-0.1634885350 %91 %
81Search Result Uses HTTPS   Other-0.161180 %83 %
82Has Entities in H2 Tags   Relevancy-0.161147 %90 %
83Variations in First 100 Words   Relevancy-0.16178758 %90 %
84Percentage of DoFollow Links   Authority-0.161007873 %90 %
85Average Words Per Sentence   Size-0.151493171 %85 %
86Variations in Distinct A Tag HREF Attributes   Relevancy-0.1521333650 %91 %
87LSI Words in Meta Description Tag   Relevancy-0.15301156 %91 %
88Search Result Domain Length   Size-0.15251681 %85 %
89Search Result Host Length   Size-0.15251681 %85 %
90Number of Sentences   Size-0.1566013777 %85 %
91Exact Matches in the HTML Tag   Relevancy-0.154321126 %87 %
92Number Of JSON-LD Types   Relevancy-0.152292151 %87 %
93Variations in Nav Tags   Relevancy-0.15107565440 %86 %
94Has Meta Charset   Technology-0.151168 %81 %
95Variations in Section Tags   Relevancy-0.1516112733 %87 %
96Number of Referring Domains   Authority-0.15701913044 %76 %
97Has Canonical URL   Authority-0.151166 %80 %
98Number of Backlinks   Authority-0.1519454221817945 %78 %
99Number of H3 Tags   Size-0.1528853 %84 %
100Number of Questions In Headings   Size-0.1510233 %84 %
101Title Tag Has Entities   Relevancy-0.151162 %87 %
102Number of Absolute URLs   Authority-0.1592726479 %80 %
103Number of DoFollow External Links   Authority-0.15561268 %85 %
104Title Word Count   Size-0.1540879 %79 %
105Number of HTML Comments   Size-0.154094563 %86 %
106Number of Do Follow Backlinks   Authority-0.1519453741199640 %76 %
107Variations in H3 Tags   Relevancy-0.14119430 %87 %
108Number of Images without ALT Text   Size-0.1471851 %86 %
109Number of External Links   Authority-0.14591369 %87 %
110Title Length   Size-0.142365279 %78 %
111Number of JavaScript Includes   Technology-0.14401776 %77 %
112Number of Forms   Technology-0.149246 %78 %
113Word Count in Meta Description   Size-0.14391963 %80 %
114Leading Variations in H2 Tags   Relevancy-0.147118 %88 %
115Meta Description Length   Size-0.1420711563 %80 %
116Has Meta Viewport   Technology-0.141177 %82 %
117Number of Facebook Accounts   Authority-0.143125 %79 %
118Uses JSON-LD name   Other-0.141148 %81 %
119Has Meta Description   Relevancy-0.141162 %80 %
120Number of No Follow Backlinks   Authority-0.141851383728934 %70 %
121Uses Schema name   Other-0.141157 %72 %
122Has Privacy Policy   Trust-0.141153 %81 %
123Page Size Kilobytes   Size-0.14103733779 %72 %
124LSI Words in H3 Tags   Relevancy-0.141062245 %89 %
125Has Schema Markup   Relevancy-0.141160 %77 %
126Number of Questions   Size-0.14651263 %78 %
127Headings Has Question   Other-0.141131 %81 %
128Number of US Phone Numbers   Trust-0.141311138 %82 %
129Inline CSS Kilobytes   Size-0.142075663 %84 %
130Has Entities in H3 Tags   Relevancy-0.141139 %85 %
131Meta Description Tag Has Entities   Relevancy-0.141153 %84 %
132Variations in Footer Tags   Relevancy-0.1438283131 %86 %
133Has Form   Technology-0.141146 %78 %
134Variations in Strong Tags   Relevancy-0.13110323 %82 %
135Has US Phone Number   Trust-0.131139 %75 %
136Variations making whole H1-H6 Tags   Relevancy-0.132112 %81 %
137Has Contact Page   Trust-0.131156 %75 %
138Has Meta Twitter Card   Authority-0.131150 %65 %
139Has OpenGraph Type   Relevancy-0.131158 %72 %
140Number of LinkedIn Pages   Authority-0.133126 %83 %
141Variations Making Whole LI Tags   Relevancy-0.134119 %83 %
142Number of Social Pages   Authority-0.1320458 %80 %
143Entities in H4 Tags-0.1314217 %89 %
144Uses Schema url   Other-0.131152 %71 %
145Has OpenGraph Image   Relevancy-0.131153 %71 %
146Number of Social Accounts   Authority-0.137237 %85 %
147Uses JSON-LD url   Other-0.131140 %81 %
148Number of H4 Tags   Size-0.1327330 %79 %
149Uses JSON-LD description   Other-0.131139 %76 %
150Variations making whole A Tags   Relevancy-0.13101224 %84 %
151Percentage of DoFollow External Links   Authority-0.13241167 %85 %
152Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
153Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %87 %
154Has FavIcon   Technology-0.131170 %73 %
155Number of Email Addresses   Trust-0.1358437 %82 %
156Number of Questions In H2 Tags   Size-0.134121 %80 %
157Number of Prices   Size-0.133919865 %80 %
158Number of Instagram Pages   Authority-0.1317240 %78 %
159Is Article Page   Other-0.131140 %71 %
160Uses JSON-LD ListItem   Other-0.131131 %76 %
161Inline JavaScript Kilobytes   Size-0.1352415575 %71 %
162Variations Making Whole Span Tags   Relevancy-0.139116 %85 %
163Uses JSON-LD BreadcrumbList   Other-0.131131 %75 %
164Is OpenGraph Type Article   Technology-0.131130 %65 %
165Exact Matches in Sentences   Relevancy-0.1348319 %88 %
166Uses Schema description   Other-0.131145 %70 %
167Number Of Claimed Brands   Other-0.1320222 %78 %
168Uses Schema listitem   Other-0.131139 %69 %
169Variations in the last 100 words   Relevancy-0.12175441 %84 %
170Uses Schema breadcrumblist   Other-0.121139 %69 %
171Number of Nofollow Links   Authority-0.1218422 %81 %
172Uses JSON-LD datePublished   Other-0.121130 %65 %
173Exact Matches in Title Tag   Relevancy-0.122114 %85 %
174Uses Schema website   Other-0.121129 %65 %
175Variations in TITLE Attributes   Relevancy-0.125631033 %82 %
176Uses Schema datemodified   Other-0.121128 %62 %
177Number of Questions In H3 Tags   Size-0.127116 %77 %
178Variations in Meta Twitter Description   Relevancy-0.1220122 %74 %
179Exact Matches in Top 30KB   Relevancy-0.1219114 %84 %
180Uses JSON-LD ImageObject   Other-0.121129 %66 %
181Has Email   Trust-0.121137 %75 %
182Uses Schema unitcode   Other-0.12114 %15 %
183Uses JSON-LD Organization   Other-0.121129 %75 %
184Uses Schema item   Other-0.121129 %60 %
185Uses JSON-LD dateModified   Other-0.121127 %65 %
186Variations in I Tags   Relevancy-0.12394518 %82 %
187Number of Twitter Accounts   Authority-0.122120 %77 %
188Uses Schema organization   Other-0.121131 %72 %
189Is Pagination Page   Other-0.121116 %67 %
190Uses Schema imageobject   Other-0.121136 %59 %
191Percentage of NoFollow Links   Authority-0.1215220 %78 %
192Uses JSON-LD WebSite   Other-0.121126 %71 %
193Uses Schema webpage   Other-0.121131 %67 %
194Uses JSON-LD inLanguage   Other-0.121126 %63 %
195Has Meta Robots   Other-0.121122 %75 %
196Variations in Meta Twitter Content   Relevancy-0.125124 %73 %
197Leading Variations in H3 Tags   Relevancy-0.1210113 %79 %
198Uses Schema inlanguage   Other-0.121125 %61 %
199Uses JSON-LD unitCode   Other-0.12114 %16 %
200Has Terms of Service   Trust-0.121137 %72 %