Measures 150026 SEO Factors

148304 Built-In SEO Factors

139107 On-page SEO Factors

9197 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 2026-03     previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Load Time Milliseconds   Performance-0.2320717145481 %91 %
2Number of Unique LSI Words Used   Diversity-0.22121728479 %80 %
3Number of Top 200 Shared Factors Used   Diversity-0.22513896 %93 %
4Number of Unique Variations Used   Diversity-0.2219677 %91 %
5Number of Top 100 Shared Factors Used   Diversity-0.22382996 %93 %
6Number of Top 50 Shared Factors Used   Diversity-0.21171295 %93 %
7Entities in Title Tag   Relevancy-0.218363 %87 %
8Search Result Domain is .com, .net, or .org   Other-0.21116 %67 %
9Variations in Search Result Document File Name   Relevancy-0.25140 %86 %
10Number of Factors Used   Diversity-0.227017396 %91 %
11Variations in H1-H6 Tags   Relevancy-0.2128761 %91 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2119660 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.240458 %90 %
14Number of Distinct Entities Used   Diversity-0.19632673 %88 %
15Search Result Domain is .com   Other-0.19116 %67 %
16Variations in P Tags   Relevancy-0.198502763 %92 %
17Variations in Search Result URL Path   Relevancy-0.195142 %87 %
18Variations in Body Tags   Relevancy-0.196431125275 %90 %
19Variations in HTML Tags   Relevancy-0.196431125275 %90 %
20Entities in H1 Tags-0.1910251 %86 %
21Variations in Div Tags   Relevancy-0.192011910571 %90 %
22Variations in Search Result URL   Relevancy-0.1817251 %83 %
23Entities in H2 Tags-0.1844749 %88 %
24Variations in H1 Tags   Relevancy-0.188151 %87 %
25Variations in Sentences   Relevancy-0.1823293169 %90 %
26Term Frequency   Relevancy-0.184376 %90 %
27Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811241 %87 %
28Variations in the Title Tag   Relevancy-0.189263 %85 %
29Variations in LI Tags   Relevancy-0.1815632062 %90 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1812243 %87 %
31Variations in A Tags   Relevancy-0.1829372262 %89 %
32Variations in H2 Tags   Relevancy-0.1732344 %87 %
33Unabridged Word Count   Size-0.1714365174281 %90 %
34Variations in Search Result Link Text   Relevancy-0.1710278 %85 %
35Variations in Search Result Display URL   Relevancy-0.1710278 %85 %
36Word Count   Size-0.176869134781 %90 %
37LSI Words in Sentences   Relevancy-0.17422266863 %96 %
38Variation Count in Top 30KB   Relevancy-0.1741412464 %89 %
39Variations in the Canonical URL   Relevancy-0.1722246 %87 %
40Variations in First 100 Words   Relevancy-0.17118665 %88 %
41Number of P Tags   Size-0.171463570 %89 %
42Clean Text Kilobytes   Size-0.17761271 %90 %
43Entities in the HTML Tag   Relevancy-0.1757412064 %96 %
44Entities in Sentences   Relevancy-0.1748011761 %96 %
45TF/IDF   Relevancy-0.171156 %88 %
46LSI Words in Title Tag   Relevancy-0.1714564 %91 %
47Number of HTML Tags   Size-0.174502102081 %89 %
48Number of Images   Size-0.173223572 %89 %
49Number of Referring Domains   Authority-0.172360114341 %68 %
50Leading Variations in H1 Tags   Relevancy-0.172126 %86 %
51Leading Variations in Title Tag   Relevancy-0.171131 %88 %
52Number of H1 Tags   Size-0.174166 %89 %
53Variations in Absolute URLs   Relevancy-0.1665735158 %89 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.1610692257 %88 %
55Number of Heading Tags   Size-0.16762172 %90 %
56Number of Images with ALT Text   Size-0.162922766 %88 %
57Variations in A Tag HREF Attributes   Relevancy-0.1616003557 %89 %
58Variations in Script Tags   Relevancy-0.16244758261 %85 %
59Number of Backlinks   Authority-0.16653492979541 %69 %
60Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
61LSI Words in H1 Tags   Relevancy-0.1622454 %93 %
62Variations in Meta Description   Relevancy-0.1623253 %85 %
63Percentage of DoFollow Links   Authority-0.16988176 %90 %
64Clean Keyword Density in the HTML Tag   Relevancy-0.16136468 %83 %
65Number of H2 Tags   Size-0.1624765 %91 %
66Variations in Span Tags   Relevancy-0.16582847 %88 %
67Variations in ALT Attributes   Relevancy-0.16861743 %87 %
68Number of HTTPS Links   Authority-0.16191914776 %87 %
69Number of DoFollow Links   Authority-0.16191814476 %88 %
70Number of Links   Authority-0.16192014876 %87 %
71LSI Words in H2 Tags   Relevancy-0.161172054 %94 %
72Search Result Number of Dirs in Path   Other-0.165268 %79 %
73Number of Facebook Pages   Authority-0.1610254 %84 %
74Has Entities in H1 Tags   Relevancy-0.161152 %83 %
75Variation Density in Top 30KB   Relevancy-0.16192259 %83 %
76Number of Includes   Technology-0.16522578 %83 %
77Exact Matches in the HTML Tag   Relevancy-0.16271924 %88 %
78Variations in OpenGraph Title   Relevancy-0.166152 %83 %
79Entities in H3 Tags-0.1635641 %87 %
80Number of Sentences   Size-0.1649012279 %86 %
81Number of Do Follow Backlinks   Authority-0.16653204839037 %68 %
82Number of Internal Links   Authority-0.1674313275 %87 %
83Has Meta Charset   Technology-0.161169 %83 %
84Has JSON-LD Schema Markup   Relevancy-0.151151 %83 %
85Entities in Meta Description Tag   Relevancy-0.159354 %84 %
86Number Of JSON-LD Types   Relevancy-0.151331453 %86 %
87Inline CSS Kilobytes   Size-0.151996162 %83 %
88Percentage of DoFollow Internal Links   Authority-0.15907075 %87 %
89Variations in Nav Tags   Relevancy-0.1514501944 %87 %
90Has Meta Viewport   Technology-0.151178 %85 %
91Search Result Uses HTTPS   Other-0.151181 %83 %
92Has Entities in H2 Tags   Relevancy-0.151150 %84 %
93Variations in H3 Tags   Relevancy-0.1580333 %89 %
94Variations in Main Tags   Relevancy-0.15109155435 %86 %
95Average Words Per Sentence   Size-0.151943073 %83 %
96Number of JavaScript Includes   Technology-0.15351678 %82 %
97Number of No Follow Backlinks   Authority-0.15299474149331 %63 %
98Number of H3 Tags   Size-0.1540956 %89 %
99Number of HTML Comments   Size-0.1510575067 %85 %
100Number of Absolute URLs   Authority-0.15209728680 %80 %
101Number of DoFollow External Links   Authority-0.1516031470 %87 %
102Variations in OpenGraph Description   Relevancy-0.1521247 %84 %
103Search Result Domain Length   Size-0.15251781 %82 %
104Search Result Host Length   Size-0.15251781 %81 %
105Title Tag Has Entities   Relevancy-0.141163 %81 %
106Number of Images without ALT Text   Size-0.1469953 %86 %
107LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
108Number of LinkedIn Pages   Authority-0.146129 %85 %
109Number of Social Pages   Authority-0.1424459 %84 %
110Number of External Links   Authority-0.1416041572 %86 %
111Number of US Phone Numbers   Trust-0.147021643 %80 %
112Variations in Section Tags   Relevancy-0.145611836 %86 %
113Uses JSON-LD name   Other-0.141150 %81 %
114Leading Variations in H2 Tags   Relevancy-0.144121 %83 %
115Has Canonical URL   Authority-0.141167 %79 %
116Number of Forms   Technology-0.1414248 %82 %
117Number of Questions In Headings   Size-0.148235 %86 %
118Variations making whole H1-H6 Tags   Relevancy-0.142115 %84 %
119Page Size Kilobytes   Size-0.1490830780 %76 %
120Number of Email Addresses   Trust-0.14122440 %82 %
121Number of CSS Includes   Technology-0.1419970 %79 %
122Variations making whole H1, H2, and H3 Tags   Relevancy-0.141113 %85 %
123Percentage of DoFollow External Links   Authority-0.14321169 %82 %
124Number of Questions   Size-0.142371265 %79 %
125LSI Words in H3 Tags   Relevancy-0.142052046 %93 %
126Variations in Strong Tags   Relevancy-0.1427225 %84 %
127Inline JavaScript Kilobytes   Size-0.1446311977 %72 %
128Uses Schema name   Other-0.131157 %76 %
129Has US Phone Number   Trust-0.131143 %75 %
130Has FavIcon   Technology-0.131172 %78 %
131Has Schema Markup   Relevancy-0.131160 %76 %
132Number of Instagram Pages   Authority-0.1320239 %81 %
133Number of Prices   Size-0.1310318364 %79 %
134Title Word Count   Size-0.1315880 %74 %
135Variations Making Whole Span Tags   Relevancy-0.1311118 %84 %
136Variations in Footer Tags   Relevancy-0.139311034 %85 %
137Uses JSON-LD BreadcrumbList   Other-0.131132 %77 %
138Variations making whole A Tags   Relevancy-0.1313126 %82 %
139Uses JSON-LD ListItem   Other-0.131132 %77 %
140Title Length   Size-0.131115080 %76 %
141Meta Description Length   Size-0.1330011564 %78 %
142Number of Social Accounts   Authority-0.1314239 %82 %
143Uses JSON-LD url   Other-0.131144 %80 %
144Has Form   Technology-0.131148 %79 %
145Headings Has Question   Other-0.131135 %81 %
146Variations Making Whole LI Tags   Relevancy-0.135122 %82 %
147Number of H4 Tags   Size-0.1319333 %83 %
148Word Count in Meta Description   Size-0.13481964 %78 %
149Has Email   Trust-0.131140 %74 %
150Number of Questions In H2 Tags   Size-0.134123 %83 %
151Has Meta Description   Relevancy-0.131163 %74 %
152Uses Schema url   Other-0.131153 %72 %
153Is Store Page   Other-0.131143 %70 %
154Variations in the last 100 words   Relevancy-0.13116349 %77 %
155Number Of Claimed Brands   Other-0.1343222 %83 %
156Has Entities in H3 Tags   Relevancy-0.131142 %81 %
157Has Contact Page   Trust-0.131157 %77 %
158Variations in TITLE Attributes   Relevancy-0.13260535 %81 %
159Uses JSON-LD description   Other-0.131139 %74 %
160Exact Matches in H1-H6 Tags   Relevancy-0.1211115 %88 %
161Number of Facebook Accounts   Authority-0.123126 %77 %
162Variations in I Tags   Relevancy-0.12293423 %81 %
163Is Article Page   Other-0.121141 %74 %
164Has OpenGraph Type   Relevancy-0.121158 %73 %
165Uses Schema breadcrumblist   Other-0.121139 %70 %
166Uses Schema postaladdress   Other-0.121120 %70 %
167Exact Matches in Top 30KB   Relevancy-0.1226214 %85 %
168Uses Microdata potentialAction   Other-0.12114 %19 %
169Uses Schema addresslocality   Other-0.121120 %70 %
170Has Privacy Policy   Trust-0.121153 %77 %
171Entities in H4 Tags-0.1225219 %83 %
172Uses Schema listitem   Other-0.121139 %70 %
173Number of Questions In H3 Tags   Size-0.125116 %81 %
174Uses Microdata target   Other-0.12113 %20 %
175Uses Schema webpage   Other-0.121132 %72 %
176Uses JSON-LD PostalAddress   Other-0.121119 %70 %
177Uses Schema postalcode   Other-0.121118 %70 %
178Uses Microdata SearchAction   Other-0.12114 %20 %
179Uses Schema streetaddress   Other-0.121118 %70 %
180Meta Description Tag Has Entities   Relevancy-0.121154 %76 %
181Has Apple Touch Icon   Technology-0.121148 %74 %
182Variations in Article Tags   Relevancy-0.122561122 %80 %
183Is OpenGraph Type Article   Technology-0.121130 %69 %
184Uses JSON-LD addressLocality   Other-0.121119 %71 %
185Uses JSON-LD postalCode   Other-0.121117 %70 %
186Uses Schema potentialaction   Other-0.12114 %19 %
187Uses JSON-LD ImageObject   Other-0.121129 %73 %
188Uses JSON-LD streetAddress   Other-0.121117 %70 %
189Number of Twitter Accounts   Authority-0.1213122 %79 %
190Exact Matches in Title Tag   Relevancy-0.122113 %85 %
191Uses JSON-LD item   Other-0.121120 %73 %
192Has OpenGraph Image   Relevancy-0.121150 %72 %
193Variations in H4-H6 Tags   Relevancy-0.1210117 %80 %
194Uses Schema organization   Other-0.121132 %71 %
195Variations making whole H1 Tags   Relevancy-0.12118 %84 %
196Has Meta Twitter Card   Authority-0.121151 %67 %
197Leading Variations in H3 Tags   Relevancy-0.127115 %80 %
198Uses Schema image   Other-0.121120 %74 %
199Uses Schema addressregion   Other-0.121120 %64 %
200Uses Schema website   Other-0.121133 %72 %