Measures 147929 SEO Factors

146207 Built-In SEO Factors

137039 On-page SEO Factors

9168 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 2026-01     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-0.2499729581 %78 %
2Number of Unique Variations Used   Diversity-0.2424779 %89 %
3Entities in Title Tag   Relevancy-0.237368 %95 %
4Number of Distinct Entities Used   Diversity-0.23682979 %97 %
5Search Result Domain is .com, .net, or .org   Other-0.22115 %76 %
6Number of Top 100 Shared Factors Used   Diversity-0.21382998 %95 %
7Search Result Domain is .com   Other-0.21114 %75 %
8Number of Top 200 Shared Factors Used   Diversity-0.21513998 %94 %
9Entities in the HTML Tag   Relevancy-0.2186716075 %96 %
10Number of Top 50 Shared Factors Used   Diversity-0.21161297 %94 %
11Entities in Sentences   Relevancy-0.2176215771 %96 %
12Entities in H2 Tags-0.2136855 %95 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.2191763 %91 %
14Entities in H1 Tags-0.28255 %92 %
15Variations in H1-H6 Tags   Relevancy-0.2144864 %91 %
16Variations in Body Tags   Relevancy-0.25618232678 %91 %
17Load Time Milliseconds   Performance-0.222536151784 %93 %
18Variations in H1 and H2 Tags   Relevancy-0.246461 %91 %
19Variations in P Tags   Relevancy-0.215023666 %91 %
20Variations in Sentences   Relevancy-0.216284370 %93 %
21Variations in HTML Tags   Relevancy-0.25618232177 %93 %
22Number of Factors Used   Diversity-0.228517898 %92 %
23Variations in Div Tags   Relevancy-0.21892018673 %92 %
24Entities in Meta Description Tag   Relevancy-0.1915460 %91 %
25Term Frequency   Relevancy-0.196377 %93 %
26Variations in LI Tags   Relevancy-0.195002365 %88 %
27Variations in H2 Tags   Relevancy-0.1936449 %90 %
28Variations in the Title Tag   Relevancy-0.1911264 %87 %
29Variations in Search Result Document File Name   Relevancy-0.183143 %81 %
30Variations in H1 Tags   Relevancy-0.1811152 %83 %
31Entities in H3 Tags-0.1827846 %96 %
32Uses Microdata OpeningHoursSpecification-0.181111 %14 %
33Uses Microdata opens   Other-0.181111 %14 %
34Variations in Meta Description   Relevancy-0.1835256 %85 %
35Variation Density in Top 30KB   Relevancy-0.18290461 %83 %
36LSI Words in Title Tag   Relevancy-0.1813664 %94 %
37Unabridged Word Count   Size-0.1846360207483 %88 %
38Variations in A Tags   Relevancy-0.1819412965 %87 %
39Word Count   Size-0.1810039152983 %88 %
40Variations in Search Result URL Path   Relevancy-0.183145 %81 %
41Number of Includes   Technology-0.18532779 %82 %
42Clean Text Kilobytes   Size-0.182321375 %86 %
43Variations in Search Result Display URL   Relevancy-0.189279 %82 %
44Variations in Search Result Link Text   Relevancy-0.189279 %82 %
45Number of Backlinks   Authority-0.1811611041004448 %76 %
46Variation Count in Top 30KB   Relevancy-0.1841423267 %87 %
47Number of Referring Domains   Authority-0.171929418947 %75 %
48Number of P Tags   Size-0.173004174 %90 %
49Variations in First 100 Words   Relevancy-0.17178865 %88 %
50Leading Variations in H1-H6 Tags   Relevancy-0.1727245 %88 %
51Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %82 %
52Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1712243 %87 %
53LSI Words in Sentences   Relevancy-0.17319969562 %96 %
54Has JSON-LD Schema Markup   Relevancy-0.171153 %80 %
55Variations in OpenGraph Title   Relevancy-0.178154 %83 %
56Variations in Script Tags   Relevancy-0.174275362 %90 %
57Number of Heading Tags   Size-0.17782275 %89 %
58Number of Sentences   Size-0.1783612481 %87 %
59Has Entities in H1 Tags   Relevancy-0.171156 %91 %
60Variations in A Tag HREF Attributes   Relevancy-0.179374159 %88 %
61Number of Do Follow Backlinks   Authority-0.17966345808443 %76 %
62Variations in OpenGraph Description   Relevancy-0.1730251 %84 %
63Number of Facebook Pages   Authority-0.176256 %82 %
64Variations in ALT Attributes   Relevancy-0.1791747 %89 %
65Number of Images   Size-0.172393175 %90 %
66Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102659 %89 %
67Number of No Follow Backlinks   Authority-0.16309466219238 %70 %
68Number of H2 Tags   Size-0.1624768 %88 %
69Variations in the Canonical URL   Relevancy-0.1635248 %84 %
70Number Of JSON-LD Types   Relevancy-0.16721556 %87 %
71Variations in Absolute URLs   Relevancy-0.1650957461 %90 %
72Title Tag Has Entities   Relevancy-0.161169 %89 %
73LSI Words in H1 Tags   Relevancy-0.1631453 %93 %
74Number of HTML Tags   Size-0.163653100683 %91 %
75LSI Words in H2 Tags   Relevancy-0.161382153 %94 %
76Percentage of DoFollow Internal Links   Authority-0.16917278 %88 %
77TF/IDF   Relevancy-0.161157 %88 %
78LSI Words in Meta Description Tag   Relevancy-0.16221053 %93 %
79Variations in Span Tags   Relevancy-0.163591050 %90 %
80Number of CSS Includes   Technology-0.16251072 %79 %
81Number of Images with ALT Text   Size-0.161222070 %91 %
82Variations in H3 Tags   Relevancy-0.1646337 %89 %
83Number of H3 Tags   Size-0.1651960 %88 %
84Number of H1 Tags   Size-0.164169 %86 %
85Has Entities in H2 Tags   Relevancy-0.151155 %87 %
86Variations in Main Tags   Relevancy-0.1552927535 %86 %
87Number of Questions   Size-0.15841165 %85 %
88Percentage of DoFollow Links   Authority-0.151008179 %89 %
89Variations in Search Result URL   Relevancy-0.153254 %77 %
90Leading Variations in H1 Tags   Relevancy-0.152125 %79 %
91Uses Microdata GeoCoordinates   Other-0.15118 %20 %
92Leading Variations in Title Tag   Relevancy-0.151128 %81 %
93Number of Internal Links   Authority-0.1538912178 %87 %
94Uses Microdata latitude   Other-0.15118 %19 %
95Uses Microdata longitude   Other-0.15118 %19 %
96Flesch Kincaid Reading Grade Level   Other-0.156194 %87 %
97Search Result Number of Dirs in Path   Other-0.153270 %75 %
98Number of DoFollow Links   Authority-0.1539613179 %87 %
99Number of Links   Authority-0.1539713579 %87 %
100Number of HTTPS Links   Authority-0.1539613378 %87 %
101Uses Microdata addressCountry   Other-0.15117 %21 %
102Uses Microdata geo   Other-0.15117 %21 %
103Number of Questions In Headings   Size-0.1511337 %89 %
104Number of JavaScript Includes   Technology-0.15381879 %82 %
105Uses Schema geo   Other-0.15117 %21 %
106Variations in Nav Tags   Relevancy-0.1524933245 %86 %
107Number of Questions In H2 Tags   Size-0.154125 %82 %
108Meta Description Tag Has Entities   Relevancy-0.151159 %84 %
109Search Result Domain Length   Size-0.14251783 %83 %
110Search Result Host Length   Size-0.14251783 %83 %
111Uses Microdata email   Other-0.14118 %19 %
112Uses JSON-LD name   Other-0.141153 %81 %
113Number of Images without ALT Text   Size-0.142181256 %83 %
114Meta Description Length   Size-0.1419011767 %83 %
115Number of Absolute URLs   Authority-0.1495126482 %84 %
116Number of HTML Comments   Size-0.145164271 %87 %
117Search Result Uses HTTPS   Other-0.141182 %86 %
118Variations in Section Tags   Relevancy-0.148252137 %83 %
119Uses Schema name   Other-0.141159 %77 %
120Has Meta Description   Relevancy-0.141165 %79 %
121Word Count in Meta Description   Size-0.14581966 %84 %
122Number of DoFollow External Links   Authority-0.14531372 %82 %
123Has Canonical URL   Authority-0.141170 %84 %
124LSI Words in H3 Tags   Relevancy-0.141032246 %94 %
125Number of External Links   Authority-0.14551473 %84 %
126Variations in Strong Tags   Relevancy-0.1450327 %84 %
127Page Size Kilobytes   Size-0.1477028782 %81 %
128Uses Microdata priceRange   Other-0.14118 %20 %
129Has Entities in H3 Tags   Relevancy-0.141147 %90 %
130Has Meta Viewport   Technology-0.141180 %86 %
131Is Home Page   Other-0.141120 %51 %
132Number of Instagram Pages   Authority-0.1410242 %80 %
133Has Schema Markup   Relevancy-0.141162 %78 %
134Number of LinkedIn Pages   Authority-0.143130 %79 %
135Leading Variations in H2 Tags   Relevancy-0.144123 %83 %
136Number of Social Pages   Authority-0.1413463 %83 %
137Variations making whole A Tags   Relevancy-0.1425230 %81 %
138Has Privacy Policy   Trust-0.141156 %77 %
139Uses Schema url   Other-0.141155 %74 %
140Variations in Footer Tags   Relevancy-0.1424611839 %86 %
141Inline CSS Kilobytes   Size-0.141756064 %84 %
142Uses JSON-LD url   Other-0.141146 %80 %
143Variations in Meta Twitter Description   Relevancy-0.1415125 %77 %
144Uses JSON-LD image   Other-0.141118 %70 %
145Title Length   Size-0.141005081 %80 %
146Has OpenGraph Type   Relevancy-0.141160 %79 %
147Number of Facebook Accounts   Authority-0.142127 %79 %
148Uses Schema pricerange   Other-0.141112 %55 %
149Inline JavaScript Kilobytes   Size-0.1340610379 %78 %
150Has FavIcon   Technology-0.131174 %82 %
151Number of Forms   Technology-0.1311251 %78 %
152Title Word Count   Size-0.1317881 %78 %
153Uses Schema image   Other-0.131122 %68 %
154Headings Has Question   Other-0.131137 %83 %
155Variations in Meta Twitter Content   Relevancy-0.134126 %78 %
156Has OpenGraph Image   Relevancy-0.131153 %79 %
157Variations making whole H1, H2, and H3 Tags   Relevancy-0.131115 %77 %
158Entities in H4 Tags-0.139221 %88 %
159Variations making whole H1-H6 Tags   Relevancy-0.132116 %77 %
160Uses Schema telephone   Other-0.131123 %68 %
161Number of Questions In H3 Tags   Size-0.137217 %85 %
162Number of Email Addresses   Trust-0.1355444 %80 %
163Has Meta Charset   Technology-0.131172 %79 %
164Variations in the last 100 words   Relevancy-0.13183449 %84 %
165Uses JSON-LD priceRange   Other-0.131111 %57 %
166Exact Matches in the HTML Tag   Relevancy-0.13213724 %87 %
167Average Words Per Sentence   Size-0.131392877 %81 %
168Uses Schema localbusiness   Other-0.131113 %58 %
169Uses Schema organization   Other-0.131136 %75 %
170Has Contact Page   Trust-0.131163 %76 %
171Uses Microdata LocalBusiness   Other-0.13116 %28 %
172Percentage of DoFollow External Links   Authority-0.13261171 %76 %
173Uses Schema addresslocality   Other-0.131121 %66 %
174Uses Schema addressregion   Other-0.131120 %66 %
175Number of US Phone Numbers   Trust-0.1312202541 %76 %
176Uses JSON-LD FAQPage   Other-0.13119 %74 %
177Uses Schema faqpage   Other-0.131110 %74 %
178Has US Phone Number   Trust-0.131143 %62 %
179Uses Schema postaladdress   Other-0.131121 %68 %
180Variations Making Whole Span Tags   Relevancy-0.135120 %82 %
181Has Email   Trust-0.131144 %75 %
182Uses JSON-LD addressRegion   Other-0.131119 %68 %
183Uses JSON-LD LocalBusiness   Other-0.131112 %61 %
184Uses JSON-LD addressLocality   Other-0.131119 %69 %
185Has Terms of Service   Trust-0.131139 %72 %
186Has Meta Twitter Card   Authority-0.131153 %75 %
187Uses Schema question   Other-0.131111 %74 %
188Uses JSON-LD dayOfWeek   Other-0.13116 %37 %
189Variations in I Tags   Relevancy-0.13308524 %80 %
190Uses Schema answer   Other-0.131111 %74 %
191Has Form   Technology-0.131150 %71 %
192Uses JSON-LD description   Other-0.131141 %75 %
193Uses JSON-LD Question   Other-0.131110 %76 %
194Uses JSON-LD Organization   Other-0.131133 %78 %
195Uses JSON-LD PostalAddress   Other-0.131120 %71 %
196Uses Microdata telephone   Other-0.13116 %33 %
197Uses JSON-LD Answer   Other-0.131110 %76 %
198Uses JSON-LD telePhone   Other-0.121116 %72 %
199Number of Prices   Size-0.1219637667 %82 %
200Uses Schema addresscountry   Other-0.121119 %67 %