Measures 154081 SEO Factors

152359 Built-In SEO Factors

143134 On-page SEO Factors

9225 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 2026-08     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-0.3106323771 %82 %
2Number of Referring Domains   Authority-0.287623833 %92 %
3Number of Backlinks   Authority-0.28147697168833 %93 %
4Number of Do Follow Backlinks   Authority-0.27123617133730 %92 %
5Number of Heading Tags   Size-0.27472060 %90 %
6Number of P Tags   Size-0.271473859 %91 %
7Number of Top 200 Shared Factors Used   Diversity-0.26503684 %91 %
8Number of Images   Size-0.261062459 %93 %
9Has Meta Charset   Technology-0.261160 %92 %
10Number of H1 Tags   Size-0.263155 %92 %
11Clean Text Kilobytes   Size-0.26701259 %93 %
12Number of No Follow Backlinks   Authority-0.263538143621 %89 %
13Number of H2 Tags   Size-0.2515754 %92 %
14Number of Images with ALT Text   Size-0.25701754 %91 %
15Number of Top 100 Shared Factors Used   Diversity-0.25382784 %92 %
16Word Count   Size-0.257427143174 %93 %
17Unabridged Word Count   Size-0.258335175874 %93 %
18Number of Top 50 Shared Factors Used   Diversity-0.25161184 %90 %
19Search Result Domain is .com, .net, or .org   Other-0.24115 %81 %
20Load Time Milliseconds   Performance-0.2429355228874 %89 %
21Variations in H1-H6 Tags   Relevancy-0.24304947 %86 %
22Variations in P Tags   Relevancy-0.2450585147 %90 %
23Variations in H1, H2, and H3 Tags   Relevancy-0.23254847 %87 %
24Number of DoFollow Links   Authority-0.2350211668 %92 %
25Number of HTTPS Links   Authority-0.2350511768 %92 %
26Number of Links   Authority-0.2350511868 %92 %
27Search Result Domain is .com   Other-0.23115 %81 %
28Variations in H1 and H2 Tags   Relevancy-0.2391545 %88 %
29Average Words Per Sentence   Size-0.232323064 %89 %
30LSI Words in Sentences   Relevancy-0.23482961853 %95 %
31Number of External Links   Authority-0.23701263 %93 %
32Number of DoFollow External Links   Authority-0.23481162 %93 %
33Number of Internal Links   Authority-0.2349410766 %91 %
34Entities in Sentences   Relevancy-0.2358912453 %95 %
35Has JSON-LD Schema Markup   Relevancy-0.231142 %85 %
36Number of HTML Tags   Size-0.23280193574 %92 %
37Entities in H2 Tags-0.2232740 %95 %
38Variations in Search Result Document File Name   Relevancy-0.228136 %88 %
39Number of Facebook Pages   Authority-0.2218243 %88 %
40Number of H3 Tags   Size-0.2227846 %88 %
41Number of Unique Variations Used   Diversity-0.22441266 %69 %
42Variations in LI Tags   Relevancy-0.228572646 %87 %
43Number of Images without ALT Text   Size-0.2244843 %93 %
44Number of HTML Comments   Size-0.225995156 %91 %
45Entities in the HTML Tag   Relevancy-0.2259212758 %95 %
46Variations in Div Tags   Relevancy-0.212657325956 %89 %
47LSI Words in H2 Tags   Relevancy-0.21841742 %94 %
48Leading Variations in H1-H6 Tags   Relevancy-0.218235 %85 %
49Search Result Number of Dirs in Path   Other-0.213266 %80 %
50Leading Variations in H1, H2, and H3 Tags   Relevancy-0.216234 %85 %
51Variations in H1 Tags   Relevancy-0.215140 %86 %
52Entities in H1 Tags-0.216240 %92 %
53Number of Forms   Technology-0.217237 %88 %
54Has Entities in H2 Tags   Relevancy-0.211140 %91 %
55Number of Includes   Technology-0.21632566 %83 %
56Variations in H2 Tags   Relevancy-0.2182436 %85 %
57Has Entities in H1 Tags   Relevancy-0.211141 %93 %
58Variation Count in Top 30KB   Relevancy-0.2149734050 %82 %
59Variations in Search Result URL Path   Relevancy-0.218137 %87 %
60Variations in A Tags   Relevancy-0.2132244047 %82 %
61Number of Factors Used   Diversity-0.2131917684 %86 %
62Has Form   Technology-0.21136 %85 %
63LSI Words in H1 Tags   Relevancy-0.213443 %91 %
64Number Of JSON-LD Types   Relevancy-0.21481545 %86 %
65Variations in Main Tags   Relevancy-0.21164410428 %87 %
66Number of LinkedIn Pages   Authority-0.23121 %89 %
67Number of Instagram Pages   Authority-0.215234 %88 %
68Variations in Search Result URL   Relevancy-0.215243 %82 %
69Number of Social Accounts   Authority-0.29230 %88 %
70Is Home Page   Other-0.191112 %57 %
71Number of CSS Includes   Technology-0.1925960 %78 %
72Uses JSON-LD name   Other-0.191144 %82 %
73Entities in H3 Tags-0.1931732 %95 %
74Variations in Body Tags   Relevancy-0.1910711663763 %83 %
75Number of Questions In Headings   Size-0.197229 %86 %
76Flesch Kincaid Reading Grade Level   Other-0.196181 %85 %
77Number of Distinct Entities Used   Diversity-0.19822562 %93 %
78Number of Facebook Accounts   Authority-0.198119 %86 %
79Variations in Span Tags   Relevancy-0.195171237 %90 %
80Variations in HTML Tags   Relevancy-0.1910711661961 %86 %
81Number of Social Pages   Authority-0.1931550 %89 %
82Has US Phone Number   Trust-0.191130 %83 %
83Variations in ALT Attributes   Relevancy-0.18387833 %83 %
84Uses JSON-LD url-0.181139 %81 %
85LSI Words in H3 Tags   Relevancy-0.181111835 %91 %
86Variations in Nav Tags   Relevancy-0.1858575335 %81 %
87Number of US Phone Numbers   Trust-0.1811551429 %85 %
88Leading Variations in H1 Tags   Relevancy-0.181122 %82 %
89Search Result URL Length   Size-0.18876284 %58 %
90Headings Has Question   Other-0.181130 %82 %
91Variations in Search Result Link Text   Relevancy-0.189263 %75 %
92Variations in Search Result Display URL   Relevancy-0.189263 %75 %
93Variations in H3 Tags   Relevancy-0.18163428 %82 %
94Has Entities in H3 Tags   Relevancy-0.181132 %88 %
95Search Result Summary Length   Size-0.1815414683 %76 %
96Search Result Domain Length   Size-0.18241773 %76 %
97Search Result Host Length   Size-0.18241773 %76 %
98Percentage of DoFollow External Links   Authority-0.18281262 %85 %
99Variations in Sentences   Relevancy-0.1824565255 %85 %
100Has Apple Touch Icon   Technology-0.181139 %81 %
101Term Frequency   Relevancy-0.176360 %81 %
102Variations in Section Tags   Relevancy-0.1713352528 %88 %
103Variations in A Tag HREF Attributes   Relevancy-0.1712264442 %90 %
104Number of Twitter Accounts   Authority-0.172113 %86 %
105Is Article Page   Other-0.171133 %75 %
106Number of H4 Tags   Size-0.1721326 %85 %
107Uses JSON-LD description   Other-0.171133 %78 %
108Variations in the Canonical URL   Relevancy-0.1743236 %84 %
109Uses JSON-LD BreadcrumbList   Other-0.171128 %76 %
110Variations in Distinct A Tag HREF Attributes   Relevancy-0.178352742 %91 %
111Uses JSON-LD ListItem   Other-0.171128 %76 %
112Has Privacy Policy   Trust-0.171148 %68 %
113Uses Schema organization   Other-0.171126 %80 %
114Number of Sentences   Size-0.1786014871 %79 %
115Percentage of DoFollow Links   Authority-0.17998168 %76 %
116Uses Schema website   Other-0.171127 %71 %
117Has Meta Robots   Other-0.171120 %82 %
118Exact Matches in the HTML Tag   Relevancy-0.16162821 %80 %
119Variations in the Title Tag   Relevancy-0.1613250 %72 %
120Uses JSON-LD Organization   Other-0.161124 %81 %
121Number of Questions In H2 Tags   Size-0.164119 %85 %
122Has Contact Page   Trust-0.161152 %60 %
123Leading Variations in H2 Tags   Relevancy-0.163118 %83 %
124Uses JSON-LD datePublished   Other-0.161125 %76 %
125Percentage of DoFollow Internal Links   Authority-0.16887167 %69 %
126Number of Meta Generator Tags   Technology-0.162126 %70 %
127Variations in OpenGraph Title   Relevancy-0.1611244 %64 %
128Leading Variations in Title Tag   Relevancy-0.161126 %80 %
129Number of Questions In H3 Tags   Size-0.165115 %79 %
130Number Of Claimed Brands   Other-0.1628219 %85 %
131Variations in Meta Description   Relevancy-0.1641244 %74 %
132Entities in Title Tag   Relevancy-0.168352 %84 %
133Inline CSS Kilobytes   Size-0.162746058 %84 %
134Exact Matches in H1-H6 Tags   Relevancy-0.169115 %84 %
135Uses Schema datemodified   Other-0.161124 %71 %
136Is OpenGraph Type Article   Technology-0.161124 %64 %
137Number of JavaScript Includes   Technology-0.16611769 %81 %
138Uses Schema webpage   Other-0.161125 %73 %
139Uses JSON-LD WebSite   Other-0.161124 %75 %
140Variations making whole H1-H6 Tags   Relevancy-0.163113 %81 %
141Uses JSON-LD dateModified   Other-0.151123 %73 %
142Variations in Absolute URLs   Relevancy-0.155335346 %89 %
143Variations in Footer Tags   Relevancy-0.1548262829 %83 %
144Uses JSON-LD WebPage   Other-0.151124 %75 %
145Number of Absolute URLs   Authority-0.15105725973 %62 %
146Uses Schema searchaction   Other-0.151118 %72 %
147Uses JSON-LD SearchAction   Other-0.151118 %73 %
148Search Result Uses HTTPS   Other-0.151173 %81 %
149Uses JSON-LD ImageObject   Other-0.151124 %78 %
150Has Google Verify   Technology-0.151114 %77 %
151Variations making whole H1, H2, and H3 Tags   Relevancy-0.152111 %82 %
152Exact Matches in Top 30KB   Relevancy-0.1511213 %78 %
153Page Size Kilobytes   Size-0.1586430573 %49 %
154Variations in First 100 Words   Relevancy-0.15186748 %80 %
155Variations in OpenGraph Description   Relevancy-0.1538240 %70 %
156Number of Email Addresses   Trust-0.1526537 %80 %
157Number of Questions   Size-0.15721359 %59 %
158Entities in Meta Description Tag   Relevancy-0.159346 %80 %
159Is Store Page   Other-0.151136 %65 %
160Variations in Script Tags   Relevancy-0.1518718650 %74 %
161Has Email   Trust-0.151135 %74 %
162Variations in Strong Tags   Relevancy-0.1496319 %85 %
163Uses Schema inlanguage   Other-0.141124 %68 %
164Uses JSON-LD inLanguage   Other-0.141124 %70 %
165Uses Schema name   Other-0.141150 %55 %
166Number of Nofollow Links   Authority-0.1441216 %80 %
167Uses Schema breadcrumblist   Other-0.141135 %44 %
168Uses JSON-LD mainEntity   Other-0.14111 %14 %
169Uses Schema listitem   Other-0.141136 %43 %
170Variations in Search Result Summary   Relevancy-0.1443361 %62 %
171Uses Schema image   Other-0.141115 %74 %
172Has Meta Viewport   Technology-0.141170 %73 %
173Number of HREF Lang Tags   Size-0.142929 %81 %
174LSI Words in H4 Tags   Relevancy-0.1452519 %86 %
175Uses JSON-LD image   Other-0.141113 %77 %
176Entities in H4 Tags-0.1422213 %89 %
177Variations Making Whole LI Tags   Relevancy-0.144120 %80 %
178Uses Schema telephone   Other-0.141116 %73 %
179Inline JavaScript Kilobytes   Size-0.1449512169 %41 %
180Variation Density in Top 30KB   Relevancy-0.14300548 %66 %
181Has HREF Lang   Technology-0.141110 %78 %
182Uses JSON-LD item-0.141119 %71 %
183Uses Schema description   Other-0.141140 %46 %
184Is Pagination Page   Other-0.141115 %68 %
185Variations making whole A Tags   Relevancy-0.1410123 %82 %
186Number of H5 Tags   Size-0.1411211 %83 %
187Variations in Button Tags   Relevancy-0.1424821310 %84 %
188LSI Words in Meta Description Tag   Relevancy-0.1430947 %84 %
189Variations in I Tags   Relevancy-0.14371416 %80 %
190Has Domain Phrase In Title   Trust-0.141113 %64 %
191Variations Making Whole Span Tags   Relevancy-0.144116 %86 %
192Has Schema Markup   Relevancy-0.141155 %53 %
193Clean Keyword Density in the HTML Tag   Relevancy-0.14192554 %64 %
194Uses Schema entrypoint   Other-0.141116 %71 %
195Has Meta Twitter Card   Authority-0.141147 %40 %
196Uses JSON-LD EntryPoint   Other-0.141116 %73 %
197Uses Schema postalcode   Other-0.141114 %71 %
198Word Count in Meta Description   Size-0.14631960 %60 %
199Uses Schema url   Other-0.141146 %53 %
200Variations in Article Tags   Relevancy-0.1412721516 %79 %