Measures 150708 SEO Factors

148986 Built-In SEO Factors

139784 On-page SEO Factors

9202 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 2026-06     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-0.321015371 %67 %
2Search Result Domain is .com, .net, or .org   Other-0.281110 %89 %
3Variations in Body Tags   Relevancy-0.2754926456 %67 %
4Average Words Per Sentence   Size-0.26552972 %89 %
5Number of Top 200 Shared Factors Used   Diversity-0.25462889 %100 %
6Number of P Tags   Size-0.25533164 %100 %
7Number of H2 Tags   Size-0.2512755 %89 %
8Number of Heading Tags   Size-0.25331962 %89 %
9Has Meta Charset   Technology-0.251161 %89 %
10Clean Text Kilobytes   Size-0.25141062 %100 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.2419736 %67 %
12Variations in LI Tags   Relevancy-0.24311234 %67 %
13Number of DoFollow External Links   Authority-0.24281466 %89 %
14Number of Top 100 Shared Factors Used   Diversity-0.24342089 %100 %
15Search Result Domain is .com   Other-0.24119 %100 %
16Variations in H1-H6 Tags   Relevancy-0.2320736 %67 %
17Number of External Links   Authority-0.23291567 %89 %
18Number of Images with ALT Text   Size-0.23391661 %89 %
19Uses JSON-LD CollectionPage   Other-0.23116 %33 %
20Uses Schema collectionpage   Other-0.23116 %33 %
21Load Time Milliseconds   Performance-0.234741257178 %89 %
22Unabridged Word Count   Size-0.232179162080 %100 %
23Variations in Div Tags   Relevancy-0.232018342 %78 %
24Word Count   Size-0.231498120080 %100 %
25Variations in Meta Description   Relevancy-0.233134 %78 %
26Number of HTTPS Links   Authority-0.2323112672 %100 %
27Number of No Follow Backlinks   Authority-0.2355414328 %56 %
28Term Frequency   Relevancy-0.234245 %78 %
29Number of Links   Authority-0.2323112672 %100 %
30Number of DoFollow Links   Authority-0.2223112572 %100 %
31Number of HTML Tags   Size-0.222125110078 %89 %
32Number of Unique Variations Used   Diversity-0.2212559 %67 %
33Number of Internal Links   Authority-0.2222411271 %100 %
34Page Size Kilobytes   Size-0.2282850068 %44 %
35Number of Top 50 Shared Factors Used   Diversity-0.2214889 %89 %
36Search Result Has Unmodified Page Title   Other-0.211138 %56 %
37Variations in H1 and H2 Tags   Relevancy-0.217332 %78 %
38Variations in P Tags   Relevancy-0.21381633 %89 %
39Number of Social Accounts   Authority-0.213232 %89 %
40Has US Phone Number   Trust-0.211138 %78 %
41Number of Facebook Accounts   Authority-0.211121 %89 %
42Has DocType Tag   Technology-0.211176 %11 %
43Uses JSON-LD award   Other-0.21111 %11 %
44Uses JSON-LD gtin   Other-0.21111 %11 %
45Uses JSON-LD itemListOrder   Other-0.21111 %11 %
46Uses Schema award   Other-0.21111 %11 %
47Uses Schema gtin   Other-0.21111 %11 %
48Uses Schema itemlistorder   Other-0.21111 %11 %
49Uses Schema pagetype   Other-0.21112 %11 %
50Number of Images   Size-0.21823165 %100 %
51Number of US Phone Numbers   Trust-0.2123934 %100 %
52Number of H1 Tags   Size-0.213261 %100 %
53Variations in Main Tags   Relevancy-0.211825625 %67 %
54Is Shopify Website   Technology-0.211110 %56 %
55Variations in HTML Tags   Relevancy-0.2154919842 %89 %
56Number of Forms   Technology-0.213343 %100 %
57Variations in H1 Tags   Relevancy-0.22132 %67 %
58Is Article Page   Other-0.21137 %89 %
59Search Result URL Length   Size-0.2857495 %78 %
60Percentage of DoFollow Internal Links   Authority-0.2837070 %78 %
61Uses JSON-LD sku   Other-0.2112 %22 %
62Uses Schema sku   Other-0.2112 %22 %
63Uses JSON-LD Organization   Other-0.21128 %89 %
64Number of HTML Comments   Size-0.21986058 %78 %
65Has Form   Technology-0.21142 %100 %
66Uses JSON-LD price   Other-0.19114 %33 %
67Uses Schema price   Other-0.19114 %33 %
68Uses Schema ispartof   Other-0.19111 %11 %
69Uses JSON-LD isPartOf   Other-0.19111 %11 %
70Uses JSON-LD ratingCount   Other-0.19118 %11 %
71Has Google Verify   Technology-0.191117 %67 %
72Uses Schema organization   Other-0.191129 %100 %
73Number of H3 Tags   Size-0.1916947 %100 %
74Number of Factors Used   Diversity-0.1919914089 %89 %
75Uses JSON-LD logo   Other-0.19117 %67 %
76Number of Questions   Size-0.18421859 %56 %
77Has Contact Page   Trust-0.181137 %56 %
78Inline CSS Kilobytes   Size-0.18865759 %78 %
79Number of Facebook Pages   Authority-0.183248 %89 %
80Is Pagination Page   Other-0.181121 %89 %
81Variations in A Tags   Relevancy-0.18431428 %78 %
82Number of JavaScript Includes   Technology-0.18422373 %89 %
83Number Of Claimed Brands   Other-0.182219 %89 %
84LSI Words in H2 Tags   Relevancy-0.18411433 %100 %
85Variation Count in Top 30KB   Relevancy-0.18431234 %78 %
86Leading Variations in H1 Tags   Relevancy-0.181117 %67 %
87Uses JSON-LD Article   Other-0.181121 %44 %
88Search Result Summary Length   Size-0.1815315089 %89 %
89Variations in Nav Tags   Relevancy-0.1816718 %78 %
90Meta Description Length   Size-0.1820913461 %67 %
91Uses JSON-LD WebSite   Other-0.181119 %78 %
92Number of H4 Tags   Size-0.183227 %44 %
93LSI Words in Sentences   Relevancy-0.1875338245 %100 %
94Uses Schema website   Other-0.181121 %67 %
95Number of Includes   Technology-0.18523275 %89 %
96Uses JSON-LD ItemList   Other-0.18116 %22 %
97Percentage of DoFollow External Links   Authority-0.17161159 %67 %
98Uses Schema headline   Other-0.171133 %56 %
99Leading Variations in H1-H6 Tags   Relevancy-0.179225 %67 %
100Has Schema Markup   Relevancy-0.171150 %67 %
101Variations in H2 Tags   Relevancy-0.176223 %67 %
102Has HREF Lang   Technology-0.171120 %78 %
103Variations in Span Tags   Relevancy-0.1724620 %100 %
104Has JSON-LD Schema Markup   Relevancy-0.171140 %100 %
105Search Result URL has Year-0.17117 %44 %
106Uses JSON-LD AudioObject   Other-0.17111 %11 %
107Uses Microdata acceptedAnswer   Other-0.17111 %11 %
108Uses Microdata Answer   Other-0.17111 %11 %
109Uses Microdata contentUrl-0.17112 %22 %
110Uses Microdata FAQPage   Other-0.17111 %11 %
111Uses Microdata mainContentOfPage   Other-0.17111 %11 %
112Uses Microdata mainEntity   Other-0.17111 %11 %
113Uses Microdata Question   Other-0.17111 %11 %
114Uses Schema acceptedanswer   Other-0.17111 %11 %
115Uses Schema article   Other-0.171122 %44 %
116Uses Schema audioobject   Other-0.17111 %11 %
117Uses Schema mainentity   Other-0.17111 %11 %
118Number of Images without ALT Text   Size-0.17441449 %100 %
119Number Of JSON-LD Types   Relevancy-0.17261041 %100 %
120Uses Schema logo   Other-0.171110 %89 %
121Uses Schema readaction   Other-0.171118 %56 %
122Uses JSON-LD ReadAction   Other-0.171118 %56 %
123Uses JSON-LD EntryPoint   Other-0.161116 %67 %
124Uses JSON-LD urlTemplate   Other-0.161116 %67 %
125Uses Schema entrypoint   Other-0.161116 %67 %
126Uses Schema urltemplate   Other-0.161116 %67 %
127Percentage of DoFollow Links   Authority-0.16958072 %89 %
128Number of Questions In H2 Tags   Size-0.161120 %78 %
129Has Meta Viewport   Technology-0.161170 %67 %
130Variations in Search Result Display URL   Relevancy-0.162144 %67 %
131Variations in Search Result Link Text   Relevancy-0.162144 %67 %
132Uses JSON-LD name   Other-0.161139 %100 %
133Uses Microdata Organization   Other-0.16114 %67 %
134Uses Microdata logo   Other-0.16113 %78 %
135Number of Prices   Size-0.161979562 %78 %
136Leading Variations in H1, H2, and H3 Tags   Relevancy-0.169224 %67 %
137Uses JSON-LD SearchAction   Other-0.161117 %78 %
138Number of Do Follow Backlinks   Authority-0.167467130228 %89 %
139Uses Schema searchaction   Other-0.161117 %78 %
140Uses Schema isauthconnectionmethodreported   Other-0.16111 %11 %
141Uses Schema sectionoverride   Other-0.16111 %11 %
142Uses Schema seller   Other-0.16111 %11 %
143Uses Schema shouldnotshownewslettersignupscreen   Other-0.16111 %11 %
144Uses Schema webpage   Other-0.161130 %56 %
145Variations in OpenGraph Description   Relevancy-0.162131 %78 %
146Uses JSON-LD seller   Other-0.16111 %11 %
147Number of Referring Domains   Authority-0.161543433 %100 %
148Uses RDFa isAuthConnectionMethodReported   Other-0.16111 %11 %
149Uses RDFa sectionOverride   Other-0.16111 %11 %
150Uses RDFa shouldNotShowNewsletterSignUpScreen   Other-0.16111 %11 %
151Number of Questions In Headings   Size-0.163235 %78 %
152Has Canonical URL   Authority-0.161158 %67 %
153Number of Twitter Accounts   Authority-0.161120 %78 %
154Variations in Article Tags   Relevancy-0.1611411 %56 %
155Exact Matches in H1-H6 Tags   Relevancy-0.165122 %56 %
156Variations in A Tag HREF Attributes   Relevancy-0.16892921 %78 %
157Uses JSON-LD url   Other-0.161138 %100 %
158Variations in Search Result Document File Name   Relevancy-0.162119 %78 %
159Variations in Distinct A Tag HREF Attributes   Relevancy-0.16592021 %78 %
160Flesch Kincaid Reading Grade Level   Other-0.163078 %78 %
161Variations in Sentences   Relevancy-0.161062839 %67 %
162Search Result Number of Dirs in Path   Other-0.153276 %89 %
163Search Result Domain Length   Size-0.15181675 %78 %
164Search Result Host Length   Size-0.15181675 %78 %
165Word Count in Meta Description   Size-0.15382363 %78 %
166Exact Matches in Top 30KB   Relevancy-0.156221 %67 %
167Variations in ALT Attributes   Relevancy-0.1531822 %78 %
168LSI Words in H1 Tags   Relevancy-0.155333 %100 %
169Uses Schema name   Other-0.151142 %56 %
170Uses Schema de   Other-0.15111 %11 %
171Uses Schema decisioncookiename   Other-0.15111 %11 %
172Uses Schema defaultlanguage   Other-0.15111 %11 %
173Uses Schema devlicense   Other-0.15111 %11 %
174Uses Schema devlicenselearnmore   Other-0.15111 %11 %
175Uses Schema devlicenselink   Other-0.15111 %11 %
176Uses Schema dj   Other-0.15111 %11 %
177Uses Schema dk   Other-0.15111 %11 %
178Uses Schema dm   Other-0.15111 %11 %
179Uses Schema do   Other-0.15111 %11 %
180Uses Schema dz   Other-0.15111 %11 %
181Uses Schema ec   Other-0.15111 %11 %
182Uses Schema ee   Other-0.15111 %11 %
183Uses Schema eg   Other-0.15111 %11 %
184Uses Schema eh   Other-0.15111 %11 %
185Uses Schema er   Other-0.15111 %11 %
186Uses Schema es   Other-0.15111 %11 %
187Uses Schema et   Other-0.15111 %11 %
188Uses Schema eu   Other-0.15111 %11 %
189Uses Schema failedconsentdocumentationhandling   Other-0.15111 %11 %
190Uses Schema fi   Other-0.15111 %11 %
191Uses Schema fj   Other-0.15111 %11 %
192Uses Schema fk   Other-0.15111 %11 %
193Uses Schema flag   Other-0.15111 %11 %
194Uses Schema fm   Other-0.15111 %11 %
195Uses Schema fo   Other-0.15111 %11 %
196Uses Schema fr   Other-0.15111 %11 %
197Uses Schema ga   Other-0.15111 %11 %
198Uses Schema gb   Other-0.15111 %11 %
199Uses Schema gd   Other-0.15111 %11 %
200Uses Schema ge   Other-0.15111 %11 %