Measures 147889 SEO Factors

146167 Built-In SEO Factors

137001 On-page SEO Factors

9166 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

SEO Factor Class

Size SEO Factors ( 54333 )
Relevancy SEO Factors ( 53940 )
Other SEO Factors ( 32632 )
Local SEO Factors ( 8985 )
Technology SEO Factors ( 1599 )
Authority SEO Factors ( 163 )
Pay Per Click SEO Factors ( 29 )
Diversity SEO Factors ( 15 )
Trust SEO Factors ( 15 )
Easy SEO Factors ( 3 )
Performance SEO Factors ( 1 )
This factor is measured within the schema markup of the web page. SEO Factors ( 1 )

SEO Factor Type

Size SEO Factors ( 54329 )
Keywords SEO Factors ( 41842 )
Schema SEO Factors ( 32578 )
Local SEO Factors ( 8986 )
LSI SEO Factors ( 8508 )
Entities SEO Factors ( 3568 )
Other SEO Factors ( 1705 )
Backlinks SEO Factors ( 72 )
Social SEO Factors ( 58 )
Page Links SEO Factors ( 29 )
Structure SEO Factors ( 23 )
Meta SEO Factors ( 14 )
On Page SEO Factors ( 3 )
This factor does not have an applicable match type. SEO Factors ( 1 )
These counts reflect SEO factors with generated docs.
Not all SEO factors have that yet.

Compare Top SEO Factors By Month

Compare Months Before and After Helpful Content Update ( note the factors that exited at the bottom )
Data Documentation - As seen on Digitaleer.com

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 Includes   Technology-0.56282749 %100 %
2Has JSON-LD Schema Markup   Relevancy-0.531137 %100 %
3Number of CSS Includes   Technology-0.466643 %100 %
4Number of Facebook Pages   Authority-0.452239 %100 %
5Number of Top 100 Shared Factors Used   Diversity-0.44131382 %100 %
6Number of Top 200 Shared Factors Used   Diversity-0.42212082 %100 %
7Number of Instagram Pages   Authority-0.412237 %100 %
8Number of HTML Comments   Size-0.36727060 %100 %
9Number of Do Follow Backlinks   Authority-0.362220 %100 %
10Number of Unique LSI Words Used   Diversity-0.34222267 %100 %
11Number of Backlinks   Authority-0.322221 %100 %
12Number of Referring Domains   Authority-0.322221 %100 %
13Has Form   Technology-0.311155 %100 %
14Load Time Milliseconds   Performance-0.33156309877 %100 %
15Number of Distinct Entities Used   Diversity-0.3101073 %100 %
16Entities in Sentences   Relevancy-0.341941562 %100 %
17LSI Words in Sentences   Relevancy-0.310210159 %100 %
18Average Words Per Sentence   Size-0.29212062 %100 %
19Entities in the HTML Tag   Relevancy-0.2948247768 %100 %
20Uses JSON-LD target   Other-0.281111 %100 %
21Number of Images   Size-0.27545361 %100 %
22Number of Images with ALT Text   Size-0.27444359 %100 %
23Unabridged Word Count   Size-0.2750149670 %100 %
24Uses Schema target   Other-0.271115 %100 %
25Has Meta Charset   Technology-0.261159 %100 %
26Number of Forms   Technology-0.266657 %100 %
27Word Count   Size-0.2529629470 %100 %
28Uses JSON-LD SearchAction   Other-0.251114 %100 %
29Uses Schema searchaction   Other-0.251118 %100 %
30Uses Schema website   Other-0.251125 %100 %
31Clean Text Kilobytes   Size-0.24131363 %100 %
32Number of H1 Tags   Size-0.241161 %100 %
33Entities in H3 Tags-0.244410 %100 %
34Has Entities in H3 Tags   Relevancy-0.241110 %100 %
35Uses JSON-LD WebSite   Other-0.241120 %100 %
36Uses Schema availability   Other-0.24118 %100 %
37Number of Images without ALT Text   Size-0.23101055 %100 %
38Number Of JSON-LD Types   Relevancy-0.23272748 %100 %
39Number of Heading Tags   Size-0.23121262 %100 %
40Title Tag Has Entities   Relevancy-0.231115 %100 %
41Has HREF Lang   Technology-0.221148 %100 %
42Uses JSON-LD availability   Other-0.22115 %100 %
43Uses JSON-LD Offer   Other-0.22115 %100 %
44Uses Schema price   Other-0.22117 %100 %
45Number of HTML Tags   Size-0.211952193577 %100 %
46Uses JSON-LD name   Other-0.211146 %100 %
47Number of P Tags   Size-0.2505061 %100 %
48Uses JSON-LD priceCurrency   Other-0.2118 %100 %
49LSI Words in H3 Tags   Relevancy-0.2337 %100 %
50Uses Microdata price   Other-0.2114 %100 %
51Number of Schema Products   Size-0.21110 %100 %
52Uses Schema offer   Other-0.2119 %100 %
53Has Meta Robots   Other-0.191129 %100 %
54Number of H2 Tags   Size-0.194453 %100 %
55Has Entities in H1 Tags   Relevancy-0.19115 %100 %
56Uses JSON-LD price   Other-0.19114 %100 %
57Uses JSON-LD url   Other-0.191144 %100 %
58Uses Microdata availability   Other-0.19114 %100 %
59Search Result Summary Has Ellipsis   Other-0.181164 %100 %
60Number of DoFollow Links   Authority-0.1829129066 %100 %
61Number of HTTPS Links   Authority-0.1830230066 %100 %
62Number of Links   Authority-0.1830230066 %100 %
63Percentage of DoFollow Links   Authority-0.18818066 %100 %
64Uses JSON-LD alternativeHeadline   Other-0.18111 %100 %
65Uses JSON-LD dateCreated   Other-0.18111 %100 %
66Uses JSON-LD wordCount-0.18111 %100 %
67Uses Schema alternativeheadline   Other-0.18111 %100 %
68Uses Schema datecreated   Other-0.18111 %100 %
69Uses Schema itemlist   Other-0.18119 %100 %
70Uses Schema wordcount   Other-0.18111 %100 %
71Search Result Link Text Has Year   Other-0.17111 %100 %
72Variations in HTML Comment Tags   Relevancy-0.17111 %100 %
73Number of Internal Links   Authority-0.1729429264 %100 %
74Title Has Year   Other-0.17111 %100 %
75Entities in Title Tag   Relevancy-0.171113 %100 %
76Uses JSON-LD closes   Other-0.17114 %100 %
77Uses JSON-LD image   Other-0.171117 %100 %
78Uses JSON-LD jobTitle   Other-0.17111 %100 %
79Uses JSON-LD numberOfItems   Other-0.17111 %100 %
80Uses JSON-LD OpeningHoursSpecification   Other-0.17114 %100 %
81Uses JSON-LD opens   Other-0.17114 %100 %
82Uses JSON-LD Product   Other-0.17119 %100 %
83Uses JSON-LD Store   Other-0.17113 %100 %
84Uses Schema closes   Other-0.17114 %100 %
85Uses Schema jobtitle   Other-0.17111 %100 %
86Uses Schema numberofitems   Other-0.17111 %100 %
87Uses Schema openinghoursspecification   Other-0.17114 %100 %
88Uses Schema opens   Other-0.17114 %100 %
89Uses Schema store   Other-0.17113 %100 %
90Variations in Search Result Display URL   Relevancy-0.162278 %100 %
91Variations in Search Result Link Text   Relevancy-0.162278 %100 %
92Number of JavaScript Includes   Technology-0.16242471 %100 %
93Uses Microdata WebPage   Other-0.16116 %100 %
94Uses Schema brand   Other-0.161110 %100 %
95Search Result Summary Length   Size-0.1515515582 %100 %
96Has Google Analytics   Technology-0.15114 %100 %
97Has Email   Trust-0.151136 %100 %
98Number of US Phone Numbers   Trust-0.15336 %100 %
99Percentage of DoFollow Internal Links   Authority-0.15757564 %100 %
100Entities in H1 Tags-0.15114 %100 %
101Uses Microdata category   Other-0.15111 %100 %
102Uses Microdata Comment-0.15111 %100 %
103Uses Microdata reviewBody   Other-0.15111 %100 %
104Uses Microdata text   Other-0.151111 %100 %
105Uses Schema breadcrumblist   Other-0.151149 %100 %
106Uses Schema category   Other-0.15111 %100 %
107Uses Schema comment   Other-0.15111 %100 %
108Uses Schema listitem   Other-0.151149 %100 %
109Uses Schema logo   Other-0.151127 %100 %
110Uses Schema reviewbody   Other-0.15111 %100 %
111Uses Schema text   Other-0.151112 %100 %
112Has Domain Phrase In Title   Trust-0.141139 %100 %
113Number of External Links   Authority-0.149964 %100 %
114Number of Nofollow Links   Authority-0.14111144 %100 %
115Percentage of NoFollow Links   Authority-0.144442 %100 %
116Uses JSON-LD keywords   Other-0.14111 %100 %
117Uses Microdata contentUrl-0.14111 %100 %
118Uses Microdata ItemList   Other-0.14114 %100 %
119Uses RDFa BreadcrumbList   Other-0.14111 %100 %
120Uses RDFa itemListElement   Other-0.14111 %100 %
121Uses RDFa ListItem   Other-0.14111 %100 %
122Uses RDFa position   Other-0.14111 %100 %
123Search Result Number of Dirs in Path   Other-0.133377 %100 %
124Number of HREF Lang Tags   Size-0.134447 %100 %
125Number of YouTube Accounts   Technology-0.13114 %100 %
126Percentage of NoFollow Internal Links   Authority-0.133334 %100 %
127Number of H3 Tags   Size-0.134437 %100 %
128Number of Factors Used   Diversity-0.1311911982 %100 %
129Uses JSON-LD addressCountry   Other-0.13117 %100 %
130Uses JSON-LD Answer   Other-0.13112 %100 %
131Uses JSON-LD articleBody   Other-0.13112 %100 %
132Uses JSON-LD BreadcrumbList   Other-0.131128 %100 %
133Uses JSON-LD dayOfWeek   Other-0.13113 %100 %
134Uses JSON-LD FAQPage   Other-0.13112 %100 %
135Uses JSON-LD item   Other-0.131110 %100 %
136Uses JSON-LD ListItem   Other-0.131128 %100 %
137Uses JSON-LD logo   Other-0.131123 %100 %
138Uses JSON-LD Question   Other-0.13112 %100 %
139Uses JSON-LD text   Other-0.13112 %100 %
140Uses Microdata Offer   Other-0.13115 %100 %
141Uses Schema addresscountry   Other-0.13117 %100 %
142Uses Schema dayofweek   Other-0.13113 %100 %
143Uses Schema image   Other-0.131125 %100 %
144Uses Schema name   Other-0.131162 %100 %
145Search Result URL has Year-0.12117 %100 %
146Has Schema Markup   Relevancy-0.121164 %100 %
147Number of DoFollow External Links   Authority-0.126657 %100 %
148Number of Email Addresses   Trust-0.123336 %100 %
149Number of Facebook Accounts   Authority-0.12115 %100 %
150LSI Words in Meta Description Tag   Relevancy-0.121116 %100 %
151Uses Schema pricecurrency   Other-0.121115 %100 %
152Uses Schema webpage   Other-0.121117 %100 %
153Has Domain In Title   Trust-0.11116 %100 %
154Number of Twitter Accounts   Authority-0.11116 %100 %
155Percentage of DoFollow External Links   Authority-0.116653 %100 %
156Number Of JSON-LD Entity References   Relevancy-0.11113 %100 %
157Uses JSON-LD ItemList   Other-0.11115 %100 %
158Number of Questions In H2 Tags   Size-0.11111 %100 %
159Uses Schema url   Other-0.111155 %100 %
160Has Meta Author   Trust-0.1115 %100 %
161Has RDFa   Relevancy-0.1112 %100 %
162Number of H4 Tags   Size-0.14419 %100 %
163Number of Top 50 Shared Factors Used   Diversity-0.13382 %100 %
164Meta Description Tag Has Entities   Relevancy-0.11111 %100 %
165Uses JSON-LD brand-0.1113 %100 %
166Uses JSON-LD Organization   Other-0.11135 %100 %
167Uses Microdata acceptedAnswer   Other-0.11110 %100 %
168Uses Microdata Answer   Other-0.11110 %100 %
169Uses Microdata FAQPage   Other-0.11110 %100 %
170Uses Microdata mainEntity   Other-0.11110 %100 %
171Uses Microdata Question   Other-0.11110 %100 %
172Uses RDFa name   Other-0.1113 %100 %
173Uses Schema acceptedanswer   Other-0.11110 %100 %
174Uses Schema alternatename   Other-0.1118 %100 %
175Uses Schema answer   Other-0.11111 %100 %
176Uses Schema faqpage   Other-0.11111 %100 %
177Uses Schema mainentity   Other-0.11110 %100 %
178Uses Schema question   Other-0.11111 %100 %
179Has MicroData   Relevancy-0.091141 %100 %
180Uses JSON-LD addressRegion   Other-0.09112 %100 %
181Uses JSON-LD AggregateRating   Other-0.09119 %100 %
182Uses JSON-LD availableLanguage   Other-0.09112 %100 %
183Uses Schema addressregion   Other-0.09112 %100 %
184Uses Schema availablelanguage   Other-0.09112 %100 %
185Has Meta Keywords   Relevancy-0.081125 %100 %
186Word Count in Meta Description   Size-0.083448 %100 %
187LSI Words in H1 Tags   Relevancy-0.08114 %100 %
188Uses Microdata url   Other-0.081120 %100 %
189Uses Schema articlebody   Other-0.08113 %100 %
190Uses Schema item   Other-0.081130 %100 %
191Uses Schema position   Other-0.081125 %100 %
192Has Google Verify   Technology-0.071124 %100 %
193Number of Facebook Share Links   Authority-0.07112 %100 %
194Uses JSON-LD alternateName   Other-0.07115 %100 %
195Uses JSON-LD EntryPoint   Other-0.07115 %100 %
196Uses JSON-LD inLanguage   Other-0.071110 %100 %
197Uses JSON-LD MerchantReturnPolicy   Other-0.07113 %100 %
198Uses JSON-LD postalCode   Other-0.07118 %100 %
199Uses JSON-LD ratingCount   Other-0.07116 %100 %
200Uses JSON-LD urlTemplate   Other-0.07115 %100 %