Measures 150114 SEO Factors

148392 Built-In SEO Factors

139194 On-page SEO Factors

9198 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-0.2323402149681 %92 %
2Number of Unique LSI Words Used   Diversity-0.22121729580 %80 %
3Search Result Domain is .com, .net, or .org   Other-0.22116 %70 %
4Number of Unique Variations Used   Diversity-0.2123677 %90 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523896 %93 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392996 %93 %
7Number of Top 50 Shared Factors Used   Diversity-0.21171295 %92 %
8Search Result Domain is .com   Other-0.2116 %70 %
9Entities in Title Tag   Relevancy-0.28363 %89 %
10Variations in H1-H6 Tags   Relevancy-0.19309760 %90 %
11Variations in Search Result Document File Name   Relevancy-0.197140 %86 %
12Variations in H1 and H2 Tags   Relevancy-0.19168457 %90 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.19299659 %90 %
14Number of Distinct Entities Used   Diversity-0.19632672 %89 %
15Number of Factors Used   Diversity-0.1939517396 %90 %
16Variations in P Tags   Relevancy-0.19140994062 %91 %
17Variations in Body Tags   Relevancy-0.1917421245075 %90 %
18Variations in HTML Tags   Relevancy-0.1917421245075 %90 %
19Variations in Div Tags   Relevancy-0.194812018170 %91 %
20Variations in Search Result URL Path   Relevancy-0.1812142 %87 %
21Entities in H1 Tags-0.1810250 %88 %
22Entities in H2 Tags-0.1844748 %90 %
23Variations in Sentences   Relevancy-0.1881904069 %90 %
24Variations in H1 Tags   Relevancy-0.1841150 %87 %
25Word Count   Size-0.1813622138781 %89 %
26Variations in LI Tags   Relevancy-0.1844662360 %90 %
27Term Frequency   Relevancy-0.186375 %90 %
28Unabridged Word Count   Size-0.1832037182681 %90 %
29Variations in Search Result URL   Relevancy-0.1824251 %84 %
30Variations in A Tags   Relevancy-0.1855073160 %88 %
31Variations in Search Result Link Text   Relevancy-0.1720278 %83 %
32Variations in Search Result Display URL   Relevancy-0.1720278 %83 %
33Clean Text Kilobytes   Size-0.171571270 %89 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716239 %87 %
35LSI Words in Sentences   Relevancy-0.17540669663 %96 %
36Entities in the HTML Tag   Relevancy-0.1760912465 %96 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1722241 %87 %
38Entities in Sentences   Relevancy-0.1760612161 %95 %
39Variations in the Title Tag   Relevancy-0.1719263 %85 %
40Variations in H2 Tags   Relevancy-0.17127343 %87 %
41Variation Count in Top 30KB   Relevancy-0.1754603262 %89 %
42Number of P Tags   Size-0.176343569 %89 %
43Number of HTML Tags   Size-0.176162100381 %89 %
44Number of Referring Domains   Authority-0.175102416243 %72 %
45Number of Images   Size-0.174423471 %89 %
46Number of H1 Tags   Size-0.174166 %89 %
47Number of Heading Tags   Size-0.171922071 %89 %
48Variations in First 100 Words   Relevancy-0.17176663 %87 %
49Number of Images with ALT Text   Size-0.174362565 %88 %
50Variations in the Canonical URL   Relevancy-0.1739245 %86 %
51Number of Backlinks   Authority-0.16780137882243 %72 %
52Number of H2 Tags   Size-0.1626764 %89 %
53LSI Words in Title Tag   Relevancy-0.1617665 %91 %
54TF/IDF   Relevancy-0.161155 %87 %
55Number of DoFollow Links   Authority-0.16191813876 %88 %
56Variations in Absolute URLs   Relevancy-0.16148616456 %90 %
57Number of HTTPS Links   Authority-0.16191914076 %88 %
58Leading Variations in Title Tag   Relevancy-0.161130 %85 %
59Number of Do Follow Backlinks   Authority-0.16653204716639 %71 %
60Number of Links   Authority-0.16192014276 %88 %
61LSI Words in H1 Tags   Relevancy-0.1622454 %93 %
62Variations in Span Tags   Relevancy-0.169581046 %88 %
63Variations in Distinct A Tag HREF Attributes   Relevancy-0.1622042555 %89 %
64Flesch Kincaid Reading Grade Level   Other-0.167192 %87 %
65Variations in A Tag HREF Attributes   Relevancy-0.1632073955 %90 %
66Number of Includes   Technology-0.16762578 %82 %
67Leading Variations in H1 Tags   Relevancy-0.162125 %86 %
68Variations in Meta Description   Relevancy-0.1645252 %85 %
69Number of Internal Links   Authority-0.1674312675 %88 %
70Clean Keyword Density in the HTML Tag   Relevancy-0.16179467 %82 %
71Variations in ALT Attributes   Relevancy-0.163481942 %87 %
72Variations in Script Tags   Relevancy-0.164888111361 %85 %
73Exact Matches in the HTML Tag   Relevancy-0.16271925 %87 %
74Percentage of DoFollow Links   Authority-0.16988076 %89 %
75LSI Words in H2 Tags   Relevancy-0.161172053 %94 %
76Number of Facebook Pages   Authority-0.1610253 %84 %
77Entities in H3 Tags-0.1635640 %89 %
78Has Entities in H1 Tags   Relevancy-0.151151 %85 %
79Has JSON-LD Schema Markup   Relevancy-0.151150 %82 %
80Search Result Number of Dirs in Path   Other-0.155269 %79 %
81Number of Sentences   Size-0.1554012679 %85 %
82Variation Density in Top 30KB   Relevancy-0.15390358 %83 %
83Variations in OpenGraph Title   Relevancy-0.1516152 %82 %
84Number of No Follow Backlinks   Authority-0.15299474139032 %66 %
85Variations in Main Tags   Relevancy-0.15296988036 %86 %
86Has Meta Charset   Technology-0.151169 %83 %
87Number Of JSON-LD Types   Relevancy-0.151331453 %86 %
88Average Words Per Sentence   Size-0.152703073 %83 %
89Entities in Meta Description Tag   Relevancy-0.159353 %85 %
90Number of DoFollow External Links   Authority-0.1516031470 %86 %
91Percentage of DoFollow Internal Links   Authority-0.15907075 %85 %
92Number of HTML Comments   Size-0.1510574866 %85 %
93Variations in Nav Tags   Relevancy-0.1575262742 %88 %
94Number of External Links   Authority-0.1516041572 %86 %
95Number of H3 Tags   Size-0.1540855 %88 %
96Has Entities in H2 Tags   Relevancy-0.151149 %85 %
97Variations in H3 Tags   Relevancy-0.15131332 %88 %
98Inline CSS Kilobytes   Size-0.151996163 %83 %
99Variations in OpenGraph Description   Relevancy-0.1547247 %83 %
100Number of JavaScript Includes   Technology-0.15451778 %81 %
101Number of Images without ALT Text   Size-0.1569953 %87 %
102Search Result Uses HTTPS   Other-0.141181 %83 %
103Has Meta Viewport   Technology-0.141178 %84 %
104Variations in Section Tags   Relevancy-0.1471572135 %86 %
105Number of Forms   Technology-0.1414248 %82 %
106Search Result Domain Length   Size-0.14251681 %82 %
107Number of US Phone Numbers   Trust-0.147021542 %81 %
108Search Result Host Length   Size-0.14251681 %81 %
109Number of Absolute URLs   Authority-0.14209728680 %80 %
110Number of LinkedIn Pages   Authority-0.146129 %84 %
111Uses JSON-LD name   Other-0.141150 %81 %
112LSI Words in Meta Description Tag   Relevancy-0.14321054 %90 %
113Variations making whole H1-H6 Tags   Relevancy-0.142114 %83 %
114Title Tag Has Entities   Relevancy-0.141162 %82 %
115Leading Variations in H2 Tags   Relevancy-0.147120 %82 %
116Number of CSS Includes   Technology-0.1431970 %80 %
117Number of Questions In Headings   Size-0.148235 %85 %
118Percentage of DoFollow External Links   Authority-0.14351269 %81 %
119Number of Social Pages   Authority-0.1424459 %83 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.142113 %84 %
121Number of Email Addresses   Trust-0.14128440 %82 %
122Has Canonical URL   Authority-0.141167 %78 %
123Page Size Kilobytes   Size-0.1490831780 %74 %
124Has US Phone Number   Trust-0.131142 %75 %
125LSI Words in H3 Tags   Relevancy-0.132052045 %93 %
126Has Form   Technology-0.131147 %79 %
127Variations in Strong Tags   Relevancy-0.13311224 %84 %
128Number of Questions   Size-0.132371265 %78 %
129Variations in Footer Tags   Relevancy-0.1332251433 %85 %
130Number of Social Accounts   Authority-0.1314239 %82 %
131Number of Instagram Pages   Authority-0.1320240 %80 %
132Variations making whole A Tags   Relevancy-0.1318125 %82 %
133Uses JSON-LD url   Other-0.131144 %80 %
134Title Word Count   Size-0.1330880 %73 %
135Variations Making Whole Span Tags   Relevancy-0.1311117 %83 %
136Uses Schema name   Other-0.131158 %74 %
137Number of H4 Tags   Size-0.1341332 %82 %
138Uses JSON-LD BreadcrumbList   Other-0.131132 %76 %
139Title Length   Size-0.131865180 %75 %
140Uses JSON-LD ListItem   Other-0.131132 %77 %
141Exact Matches in H1-H6 Tags   Relevancy-0.1311116 %87 %
142Has FavIcon   Technology-0.131172 %77 %
143Headings Has Question   Other-0.131135 %81 %
144Number of Prices   Size-0.1310318565 %78 %
145Variations Making Whole LI Tags   Relevancy-0.135121 %82 %
146Meta Description Length   Size-0.1330011664 %76 %
147Number of Questions In H2 Tags   Size-0.134122 %83 %
148Has Schema Markup   Relevancy-0.131161 %75 %
149Has Email   Trust-0.131140 %74 %
150Inline JavaScript Kilobytes   Size-0.1346312777 %71 %
151Number of Facebook Accounts   Authority-0.133126 %78 %
152Exact Matches in Top 30KB   Relevancy-0.1326215 %84 %
153Variations in TITLE Attributes   Relevancy-0.13288635 %80 %
154Word Count in Meta Description   Size-0.13481964 %77 %
155Has Contact Page   Trust-0.121158 %76 %
156Uses JSON-LD description   Other-0.121139 %73 %
157Uses Schema url   Other-0.121154 %70 %
158Has Privacy Policy   Trust-0.121154 %77 %
159Is Article Page   Other-0.121142 %74 %
160Number Of Claimed Brands   Other-0.1243223 %82 %
161Has Entities in H3 Tags   Relevancy-0.121140 %82 %
162Variations in I Tags   Relevancy-0.12395422 %80 %
163Variations in the last 100 words   Relevancy-0.12182447 %78 %
164Has OpenGraph Type   Relevancy-0.121159 %73 %
165Is Store Page   Other-0.121143 %69 %
166Has Meta Description   Relevancy-0.121163 %74 %
167Entities in H4 Tags-0.1225218 %84 %
168Variations in Article Tags   Relevancy-0.1272081523 %80 %
169Uses Schema organization   Other-0.121133 %71 %
170Uses Microdata potentialAction   Other-0.12113 %16 %
171Exact Matches in Title Tag   Relevancy-0.122114 %84 %
172Exact Matches in Sentences   Relevancy-0.1247217 %89 %
173Number of Twitter Accounts   Authority-0.1213122 %78 %
174Variations making whole H1 Tags   Relevancy-0.12118 %83 %
175Uses Schema postaladdress   Other-0.121120 %67 %
176Uses Microdata target   Other-0.12113 %17 %
177Is OpenGraph Type Article   Technology-0.121131 %68 %
178Number of Questions In H3 Tags   Size-0.125116 %79 %
179Uses Microdata SearchAction   Other-0.12113 %17 %
180Uses Schema website   Other-0.121133 %70 %
181Search Result Summary Length   Size-0.1218815395 %78 %
182Uses Schema addresslocality   Other-0.121120 %66 %
183Uses JSON-LD PostalAddress   Other-0.121119 %68 %
184Uses Schema webpage   Other-0.121133 %71 %
185Leading Variations in H3 Tags   Relevancy-0.129114 %80 %
186Uses Schema image   Other-0.121120 %71 %
187Uses JSON-LD Organization   Other-0.121129 %74 %
188Variations in H4-H6 Tags   Relevancy-0.12110116 %80 %
189Uses JSON-LD ImageObject   Other-0.121129 %73 %
190Has Apple Touch Icon   Technology-0.121147 %74 %
191Uses Schema breadcrumblist   Other-0.121139 %68 %
192Uses JSON-LD item   Other-0.121121 %72 %
193Uses Schema streetaddress   Other-0.121118 %67 %
194Uses JSON-LD addressLocality   Other-0.121118 %68 %
195Uses Schema postalcode   Other-0.121118 %67 %
196Has OpenGraph Image   Relevancy-0.121151 %70 %
197Has Meta Robots   Other-0.121124 %71 %
198Uses Schema potentialaction   Other-0.12113 %17 %
199Uses Schema listitem   Other-0.121140 %68 %
200Uses JSON-LD streetAddress   Other-0.121117 %67 %