Measures 149999 SEO Factors

148277 Built-In SEO Factors

139083 On-page SEO Factors

9194 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-0.2320717146381 %92 %
2Number of Unique LSI Words Used   Diversity-0.23121729479 %80 %
3Number of Unique Variations Used   Diversity-0.2219777 %91 %
4Number of Top 200 Shared Factors Used   Diversity-0.22513895 %93 %
5Number of Top 100 Shared Factors Used   Diversity-0.22382995 %93 %
6Number of Top 50 Shared Factors Used   Diversity-0.22171295 %93 %
7Entities in Title Tag   Relevancy-0.218364 %86 %
8Search Result Domain is .com, .net, or .org   Other-0.21116 %67 %
9Variations in Search Result Document File Name   Relevancy-0.25141 %86 %
10Variations in H1-H6 Tags   Relevancy-0.2128761 %91 %
11Number of Factors Used   Diversity-0.227017495 %91 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2119660 %91 %
13Variations in H1 and H2 Tags   Relevancy-0.240458 %90 %
14Variations in P Tags   Relevancy-0.28502763 %91 %
15Search Result Domain is .com   Other-0.19116 %66 %
16Number of Distinct Entities Used   Diversity-0.19632673 %87 %
17Variations in Search Result URL Path   Relevancy-0.195142 %88 %
18Variations in Body Tags   Relevancy-0.196431126675 %90 %
19Variations in HTML Tags   Relevancy-0.196431126675 %90 %
20Variations in Div Tags   Relevancy-0.192011910871 %91 %
21Entities in H1 Tags-0.1910251 %85 %
22Variations in H1 Tags   Relevancy-0.198151 %87 %
23Variations in Search Result URL   Relevancy-0.1817251 %84 %
24Variations in Sentences   Relevancy-0.1823293169 %90 %
25Term Frequency   Relevancy-0.184376 %90 %
26Entities in H2 Tags-0.1844750 %87 %
27Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811241 %87 %
28Variations in A Tags   Relevancy-0.1829372262 %89 %
29Variations in the Title Tag   Relevancy-0.189263 %85 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1812243 %87 %
31Variations in Search Result Link Text   Relevancy-0.1810278 %86 %
32Variations in Search Result Display URL   Relevancy-0.1810278 %86 %
33Variations in LI Tags   Relevancy-0.1815632061 %91 %
34Variation Count in Top 30KB   Relevancy-0.1841412564 %89 %
35LSI Words in Sentences   Relevancy-0.18422268762 %96 %
36Unabridged Word Count   Size-0.1814365175481 %90 %
37Variations in H2 Tags   Relevancy-0.1832344 %87 %
38Variations in First 100 Words   Relevancy-0.18118665 %88 %
39Word Count   Size-0.176869136081 %90 %
40Variations in the Canonical URL   Relevancy-0.1722246 %87 %
41Number of P Tags   Size-0.171463570 %90 %
42Clean Text Kilobytes   Size-0.17761271 %90 %
43TF/IDF   Relevancy-0.171156 %88 %
44Number of Images   Size-0.173223772 %89 %
45Leading Variations in H1 Tags   Relevancy-0.172126 %86 %
46Number of HTML Tags   Size-0.174502104081 %89 %
47Exact Matches in the HTML Tag   Relevancy-0.172711026 %89 %
48Leading Variations in Title Tag   Relevancy-0.171131 %88 %
49Number of Images with ALT Text   Size-0.172922866 %88 %
50Entities in Sentences   Relevancy-0.1745111660 %96 %
51Entities in the HTML Tag   Relevancy-0.1745711964 %96 %
52LSI Words in Title Tag   Relevancy-0.1714564 %92 %
53Number of H1 Tags   Size-0.174166 %88 %
54Number of Referring Domains   Authority-0.172360115441 %67 %
55Variations in Distinct A Tag HREF Attributes   Relevancy-0.1710692357 %88 %
56Variations in A Tag HREF Attributes   Relevancy-0.1716003657 %90 %
57Variations in Absolute URLs   Relevancy-0.1765735258 %89 %
58Number of Heading Tags   Size-0.17762172 %89 %
59Variations in Script Tags   Relevancy-0.16244758761 %85 %
60LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
61Variations in ALT Attributes   Relevancy-0.16861742 %86 %
62Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
63Variations in Meta Description   Relevancy-0.1623253 %86 %
64Number of Backlinks   Authority-0.16653492841541 %67 %
65Variations in Span Tags   Relevancy-0.16582947 %89 %
66Clean Keyword Density in the HTML Tag   Relevancy-0.16136467 %84 %
67Percentage of DoFollow Links   Authority-0.16988176 %90 %
68Variation Density in Top 30KB   Relevancy-0.16192259 %84 %
69Number of HTTPS Links   Authority-0.16191915276 %88 %
70Number of Sentences   Size-0.1649012279 %86 %
71Number of Includes   Technology-0.16522578 %83 %
72Number of DoFollow Links   Authority-0.16191814976 %88 %
73Number of Links   Authority-0.16192015376 %87 %
74Number of H2 Tags   Size-0.1624765 %90 %
75Has Meta Charset   Technology-0.161169 %83 %
76Search Result Number of Dirs in Path   Other-0.165268 %79 %
77Number of Facebook Pages   Authority-0.164254 %85 %
78Has Entities in H1 Tags   Relevancy-0.161152 %82 %
79Number of Internal Links   Authority-0.1674313675 %88 %
80LSI Words in H2 Tags   Relevancy-0.161172053 %94 %
81Entities in H3 Tags-0.1635641 %86 %
82Variations in OpenGraph Title   Relevancy-0.166152 %83 %
83Number of Do Follow Backlinks   Authority-0.16653204686637 %67 %
84Has JSON-LD Schema Markup   Relevancy-0.161150 %83 %
85Entities in Meta Description Tag   Relevancy-0.159354 %83 %
86Inline CSS Kilobytes   Size-0.151996262 %84 %
87Number Of JSON-LD Types   Relevancy-0.151331452 %86 %
88Variations in Nav Tags   Relevancy-0.1514501944 %89 %
89Variations in Main Tags   Relevancy-0.15109155736 %87 %
90Percentage of DoFollow Internal Links   Authority-0.15907075 %87 %
91Has Meta Viewport   Technology-0.151178 %86 %
92Search Result Uses HTTPS   Other-0.151180 %83 %
93Variations in H3 Tags   Relevancy-0.1580333 %89 %
94Number of JavaScript Includes   Technology-0.15351677 %83 %
95Average Words Per Sentence   Size-0.151943073 %83 %
96Number of Absolute URLs   Authority-0.15209729380 %81 %
97Has Entities in H2 Tags   Relevancy-0.151151 %83 %
98Number of H3 Tags   Size-0.1540956 %88 %
99Number of No Follow Backlinks   Authority-0.15299474167431 %61 %
100Number of LinkedIn Pages   Authority-0.156130 %86 %
101Variations in OpenGraph Description   Relevancy-0.1521247 %84 %
102Number of DoFollow External Links   Authority-0.1516031470 %87 %
103Number of Images without ALT Text   Size-0.15691054 %87 %
104Number of HTML Comments   Size-0.1510575167 %85 %
105Number of Social Pages   Authority-0.1524459 %85 %
106Variations in Section Tags   Relevancy-0.155611836 %86 %
107Number of Forms   Technology-0.1514248 %83 %
108Number of External Links   Authority-0.1416041672 %86 %
109LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
110Number of Email Addresses   Trust-0.14122440 %83 %
111Title Tag Has Entities   Relevancy-0.141163 %80 %
112Search Result Domain Length   Size-0.14241680 %82 %
113Search Result Host Length   Size-0.14241681 %81 %
114Variations making whole H1-H6 Tags   Relevancy-0.142116 %84 %
115Page Size Kilobytes   Size-0.1490830980 %77 %
116Number of US Phone Numbers   Trust-0.147021643 %82 %
117Uses JSON-LD name   Other-0.141149 %82 %
118Leading Variations in H2 Tags   Relevancy-0.144121 %83 %
119Number of Questions In Headings   Size-0.147235 %86 %
120Has Canonical URL   Authority-0.141167 %79 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.141114 %84 %
122Number of CSS Includes   Technology-0.1419970 %79 %
123Number of Questions   Size-0.142371265 %80 %
124Percentage of DoFollow External Links   Authority-0.14321169 %82 %
125Number of Instagram Pages   Authority-0.1420240 %81 %
126Variations in Strong Tags   Relevancy-0.1427225 %85 %
127LSI Words in H3 Tags   Relevancy-0.142052146 %93 %
128Inline JavaScript Kilobytes   Size-0.1446311877 %72 %
129Exact Matches in H1-H6 Tags   Relevancy-0.1411116 %89 %
130Number of Prices   Size-0.1410318164 %79 %
131Has FavIcon   Technology-0.141172 %79 %
132Uses Schema name   Other-0.141157 %76 %
133Has Schema Markup   Relevancy-0.131160 %76 %
134Variations Making Whole Span Tags   Relevancy-0.1311118 %84 %
135Has Email   Trust-0.131141 %75 %
136Has US Phone Number   Trust-0.131143 %77 %
137Exact Matches in Top 30KB   Relevancy-0.1326215 %86 %
138Title Word Count   Size-0.1315880 %73 %
139Variations in Footer Tags   Relevancy-0.139311134 %85 %
140Uses JSON-LD BreadcrumbList   Other-0.131132 %77 %
141Headings Has Question   Other-0.131135 %80 %
142Variations making whole A Tags   Relevancy-0.1313126 %82 %
143Uses JSON-LD ListItem   Other-0.131132 %78 %
144Has Form   Technology-0.131148 %79 %
145Number of H4 Tags   Size-0.1319333 %83 %
146Variations Making Whole LI Tags   Relevancy-0.135121 %83 %
147Number of Social Accounts   Authority-0.1314239 %82 %
148Title Length   Size-0.131115080 %76 %
149Uses JSON-LD url   Other-0.131143 %80 %
150Meta Description Length   Size-0.1330011664 %78 %
151Exact Matches in Title Tag   Relevancy-0.132114 %86 %
152Number Of Claimed Brands   Other-0.1343222 %84 %
153Is Store Page   Other-0.131143 %71 %
154Number of Questions In H2 Tags   Size-0.134123 %83 %
155Word Count in Meta Description   Size-0.13481964 %77 %
156Has Meta Description   Relevancy-0.131163 %74 %
157Uses Schema url   Other-0.131153 %73 %
158Variations in TITLE Attributes   Relevancy-0.13260635 %81 %
159Has Entities in H3 Tags   Relevancy-0.131142 %79 %
160Number of Facebook Accounts   Authority-0.133126 %77 %
161Variations in the last 100 words   Relevancy-0.13116349 %77 %
162Uses JSON-LD description   Other-0.131139 %74 %
163Exact Matches in Sentences   Relevancy-0.1343217 %90 %
164Variations in I Tags   Relevancy-0.13293422 %81 %
165Uses Microdata potentialAction   Other-0.12114 %21 %
166Is Article Page   Other-0.121142 %74 %
167Uses Microdata SearchAction   Other-0.12114 %21 %
168Uses Schema breadcrumblist   Other-0.121139 %71 %
169Variations making whole H1 Tags   Relevancy-0.12118 %83 %
170Uses Microdata target   Other-0.12114 %22 %
171Has Contact Page   Trust-0.121156 %76 %
172Entities in H4 Tags-0.1225219 %82 %
173Has Apple Touch Icon   Technology-0.121148 %74 %
174Number of Questions In H3 Tags   Size-0.124116 %80 %
175Uses Schema listitem   Other-0.121139 %71 %
176Has OpenGraph Type   Relevancy-0.121158 %73 %
177Has Privacy Policy   Trust-0.121153 %76 %
178Uses Schema potentialaction   Other-0.12114 %21 %
179Exact Matches in H1 Tags   Relevancy-0.121111 %85 %
180Variations in Article Tags   Relevancy-0.122561122 %80 %
181Uses Schema organization   Other-0.121133 %72 %
182Is OpenGraph Type Article   Technology-0.121130 %68 %
183Uses Schema webpage   Other-0.121132 %72 %
184Variations in H4-H6 Tags   Relevancy-0.1210117 %80 %
185Leading Variations in H3 Tags   Relevancy-0.127115 %80 %
186Uses Schema postaladdress   Other-0.121119 %70 %
187Uses JSON-LD item   Other-0.121120 %74 %
188Uses JSON-LD PostalAddress   Other-0.121118 %70 %
189Uses Schema addresslocality   Other-0.121119 %70 %
190Meta Description Tag Has Entities   Relevancy-0.121154 %75 %
191Uses JSON-LD ImageObject   Other-0.121129 %73 %
192Uses Schema image   Other-0.121120 %74 %
193Number of Twitter Accounts   Authority-0.1213122 %79 %
194Uses JSON-LD addressLocality   Other-0.121118 %70 %
195Uses Schema streetaddress   Other-0.121118 %70 %
196Uses JSON-LD image   Other-0.121116 %75 %
197Uses JSON-LD streetAddress   Other-0.121117 %69 %
198Uses JSON-LD postalCode   Other-0.121117 %69 %
199Uses Schema postalcode   Other-0.121118 %70 %
200Uses JSON-LD Organization   Other-0.121129 %75 %