Measures 140028 SEO Factors

138306 Built-In SEO Factors

129430 On-page SEO Factors

8876 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 ( 54062 )
Relevancy SEO Factors ( 53402 )
Other SEO Factors ( 27637 )
Local SEO Factors ( 8704 )
Technology SEO Factors ( 1599 )
Authority SEO Factors ( 163 )
Pay Per Click SEO Factors ( 29 )
Trust SEO Factors ( 15 )
Diversity SEO Factors ( 15 )
Easy SEO Factors ( 3 )
Performance SEO Factors ( 1 )

SEO Factor Type

Size SEO Factors ( 54058 )
Keywords SEO Factors ( 41350 )
Schema SEO Factors ( 27583 )
Local SEO Factors ( 8705 )
LSI SEO Factors ( 8486 )
Entities SEO Factors ( 3544 )
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 )
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 2025-4     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-0.2585129880 %81 %
2Number of Unique Variations Used   Diversity-0.2418776 %90 %
3Number of Distinct Entities Used   Diversity-0.23562873 %94 %
4Search Result Domain is .com, .net, or .org   Other-0.23115 %82 %
5Number of Top 200 Shared Factors Used   Diversity-0.23513993 %91 %
6Number of Top 100 Shared Factors Used   Diversity-0.22382993 %91 %
7Entities in Title Tag   Relevancy-0.227364 %92 %
8Search Result Domain is .com   Other-0.22115 %83 %
9Number of Top 50 Shared Factors Used   Diversity-0.22161291 %89 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2122763 %83 %
11Variations in Search Result Display URL   Relevancy-0.212272 %79 %
12Variations in Search Result Link Text   Relevancy-0.212272 %78 %
13Number of Factors Used   Diversity-0.2124917893 %88 %
14Variations in H1 and H2 Tags   Relevancy-0.2112460 %82 %
15Variations in Div Tags   Relevancy-0.2173510771 %90 %
16Load Time Milliseconds   Performance-0.212770192682 %87 %
17Variations in P Tags   Relevancy-0.22793266 %86 %
18Variations in Search Result Document File Name   Relevancy-0.23142 %77 %
19Variations in Body Tags   Relevancy-0.2138121876 %93 %
20Variations in H1-H6 Tags   Relevancy-0.224763 %85 %
21Entities in the HTML Tag   Relevancy-0.269915070 %90 %
22Entities in Sentences   Relevancy-0.269814769 %90 %
23Variations in HTML Tags   Relevancy-0.2138121575 %94 %
24Variations in Search Result URL Path   Relevancy-0.23144 %78 %
25Variations in Sentences   Relevancy-0.23463969 %88 %
26Variations in A Tags   Relevancy-0.2972266 %90 %
27Variations in the Title Tag   Relevancy-0.22261 %81 %
28Clean Keyword Density in the HTML Tag   Relevancy-0.28367 %78 %
29Number of Includes   Technology-0.2492676 %82 %
30Term Frequency   Relevancy-0.24374 %90 %
31Variations in H1 Tags   Relevancy-0.22153 %78 %
32Variations in LI Tags   Relevancy-0.192752166 %87 %
33Variations in Search Result URL   Relevancy-0.193151 %76 %
34LSI Words in Title Tag   Relevancy-0.1914663 %90 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.196240 %82 %
36Leading Variations in H1-H6 Tags   Relevancy-0.196243 %82 %
37Variations in First 100 Words   Relevancy-0.1916662 %83 %
38Variation Count in Top 30KB   Relevancy-0.19822062 %76 %
39Variations in the Canonical URL   Relevancy-0.196248 %80 %
40Number of CSS Includes   Technology-0.1823969 %78 %
41Leading Variations in Title Tag   Relevancy-0.181128 %78 %
42Entities in H2 Tags-0.1833753 %92 %
43LSI Words in Sentences   Relevancy-0.18454278365 %90 %
44Entities in H1 Tags-0.186254 %88 %
45Variations in A Tag HREF Attributes   Relevancy-0.181673860 %90 %
46Variations in H2 Tags   Relevancy-0.1811345 %80 %
47Variations in Distinct A Tag HREF Attributes   Relevancy-0.181052560 %91 %
48Has JSON-LD Schema Markup   Relevancy-0.181152 %74 %
49Variations in Meta Description   Relevancy-0.183251 %83 %
50Variations in Script Tags   Relevancy-0.186346961 %90 %
51TF/IDF   Relevancy-0.181155 %83 %
52Number of Facebook Pages   Authority-0.1739361 %78 %
53Variation Density in Top 30KB   Relevancy-0.176257 %76 %
54Word Count   Size-0.1710647171282 %81 %
55Entities in H3 Tags-0.1728744 %92 %
56Variations in Absolute URLs   Relevancy-0.171664760 %90 %
57Variations in ALT Attributes   Relevancy-0.1740644 %80 %
58Variations in OpenGraph Title   Relevancy-0.172150 %79 %
59Variations in OpenGraph Description   Relevancy-0.1710245 %80 %
60Number of Images   Size-0.17953077 %83 %
61Number of H2 Tags   Size-0.1719770 %73 %
62Unabridged Word Count   Size-0.1718512219881 %83 %
63LSI Words in H1 Tags   Relevancy-0.1713556 %87 %
64Entities in Meta Description Tag   Relevancy-0.177353 %87 %
65Number of HTML Tags   Size-0.172534104882 %87 %
66Clean Text Kilobytes   Size-0.171031478 %83 %
67Number of Questions   Size-0.17431266 %85 %
68Number of HTTPS Links   Authority-0.1734314780 %83 %
69Number of Sentences   Size-0.1661813781 %82 %
70Search Result Number of Dirs in Path   Other-0.163271 %78 %
71Title Tag Has Entities   Relevancy-0.161162 %82 %
72Percentage of DoFollow Links   Authority-0.16978578 %82 %
73Number of Heading Tags   Size-0.16522278 %80 %
74Number of DoFollow Links   Authority-0.1633714580 %82 %
75Variations in Footer Tags   Relevancy-0.1673834 %82 %
76Leading Variations in H1 Tags   Relevancy-0.161125 %84 %
77Number of Links   Authority-0.1634414980 %83 %
78Variations in Main Tags   Relevancy-0.164605636 %78 %
79Number of Images with ALT Text   Size-0.16741973 %85 %
80Number of Internal Links   Authority-0.1633513479 %82 %
81Variations in Span Tags   Relevancy-0.1640951 %87 %
82Number of P Tags   Size-0.161994377 %82 %
83Percentage of DoFollow Internal Links   Authority-0.16897377 %85 %
84Search Result Host Length   Size-0.16241881 %76 %
85Search Result Domain Length   Size-0.16241881 %77 %
86LSI Words in Meta Description Tag   Relevancy-0.16341052 %90 %
87Flesch Kincaid Reading Grade Level   Other-0.166290 %80 %
88Has Entities in H1 Tags   Relevancy-0.161154 %84 %
89Variations in TITLE Attributes   Relevancy-0.1530533 %83 %
90Number of Absolute URLs   Authority-0.15102126882 %82 %
91LSI Words in H2 Tags   Relevancy-0.151002155 %91 %
92Uses JSON-LD Person   Other-0.151121 %53 %
93Variations in Nav Tags   Relevancy-0.151572246 %85 %
94Variations in H3 Tags   Relevancy-0.1510334 %85 %
95Number of Instagram Pages   Authority-0.1518243 %73 %
96Uses Schema headline   Other-0.151122 %51 %
97Number of DoFollow External Links   Authority-0.15441475 %78 %
98Number Of JSON-LD Types   Relevancy-0.158172056 %79 %
99Number of External Links   Authority-0.15461676 %82 %
100Variations in the last 100 words   Relevancy-0.1510345 %78 %
101Number of H1 Tags   Size-0.153274 %78 %
102Uses JSON-LD headline   Other-0.151119 %51 %
103Number of US Phone Numbers   Trust-0.151301246 %82 %
104Leading Variations in H2 Tags   Relevancy-0.153120 %78 %
105Page Size Kilobytes   Size-0.15104325282 %84 %
106Inline CSS Kilobytes   Size-0.151476164 %85 %
107Number of H3 Tags   Size-0.1529963 %78 %
108Variations Making Whole LI Tags   Relevancy-0.154122 %74 %
109Number of JavaScript Includes   Technology-0.15361779 %81 %
110Is OpenGraph Type Article   Technology-0.141133 %62 %
111Is Article Page   Other-0.141144 %66 %
112Title Word Count   Size-0.1412880 %75 %
113Variations making whole A Tags   Relevancy-0.145127 %80 %
114Search Result Uses HTTPS   Other-0.141181 %77 %
115Uses Schema person   Other-0.141122 %57 %
116Uses Schema pricecurrency   Other-0.14117 %41 %
117Uses JSON-LD GeoCircle   Other-0.14113 %17 %
118Uses Schema geocircle   Other-0.14113 %17 %
119Variations in Section Tags   Relevancy-0.141031938 %84 %
120Uses JSON-LD priceCurrency   Other-0.14116 %41 %
121Uses Schema datemodified   Other-0.141134 %52 %
122Number of LinkedIn Pages   Authority-0.1418129 %76 %
123Uses Schema price   Other-0.14115 %33 %
124Number of Questions In Headings   Size-0.1410341 %79 %
125Number of Email Addresses   Trust-0.1484543 %71 %
126Uses Schema offer   Other-0.14117 %46 %
127Uses Schema article   Other-0.141113 %48 %
128Has Entities in H2 Tags   Relevancy-0.141151 %82 %
129Average Words Per Sentence   Size-0.142393679 %77 %
130Has Privacy Policy   Trust-0.141159 %74 %
131Inline JavaScript Kilobytes   Size-0.144866980 %80 %
132Title Length   Size-0.14685180 %70 %
133Uses Schema aggregaterating   Other-0.14119 %59 %
134Number of Twitter Accounts   Authority-0.143129 %73 %
135Has FavIcon   Technology-0.141170 %69 %
136Has Contact Page   Trust-0.141162 %63 %
137Has Form   Technology-0.141152 %69 %
138Number of Prices   Size-0.143966569 %87 %
139Has US Phone Number   Trust-0.141147 %69 %
140Has Meta Viewport   Technology-0.141179 %78 %
141Uses JSON-LD Article   Other-0.141112 %49 %
142LSI Words in H3 Tags   Relevancy-0.141112248 %88 %
143Number of Nofollow Links   Authority-0.1412427 %76 %
144Has Entities in H3 Tags   Relevancy-0.141145 %83 %
145Uses Schema servicetype   Other-0.14113 %24 %
146Search Result URL Length   Size-0.141026691 %62 %
147Exact Matches in the HTML Tag   Relevancy-0.142901226 %84 %
148Uses JSON-LD serviceType   Other-0.14113 %24 %
149Search Result Summary Has Year   Other-0.131125 %45 %
150Uses JSON-LD price   Other-0.13115 %32 %
151Variations in Search Result Summary   Relevancy-0.134274 %67 %
152Variations in Article Tags   Relevancy-0.131381122 %71 %
153Uses JSON-LD Offer   Other-0.13116 %47 %
154Number of Questions In H2 Tags   Size-0.134125 %73 %
155Uses Schema webpage   Other-0.131136 %54 %
156Uses Schema image   Other-0.131121 %68 %
157Leading Variations in H3 Tags   Relevancy-0.133115 %76 %
158Number of HTML Comments   Size-0.132265075 %81 %
159Number of Forms   Technology-0.1313254 %75 %
160Uses JSON-LD item   Other-0.131122 %64 %
161Number of Images without ALT Text   Size-0.13451160 %83 %
162Uses JSON-LD dateModified   Other-0.131132 %54 %
163Has Canonical URL   Authority-0.131168 %76 %
164Number of Facebook Accounts   Authority-0.133130 %74 %
165Number of Questions In H3 Tags   Size-0.135220 %74 %
166Uses JSON-LD name   Other-0.131153 %75 %
167Has Meta Charset   Technology-0.131174 %69 %
168Uses Schema faqpage   Other-0.13117 %65 %
169Has Schema Markup   Relevancy-0.131162 %75 %
170Has Email   Trust-0.131143 %69 %
171Meta Description Length   Size-0.1323812065 %73 %
172Uses Schema question   Other-0.13118 %65 %
173Uses Schema answer   Other-0.13118 %64 %
174Uses JSON-LD AggregateRating   Other-0.13118 %63 %
175Uses Schema imageobject   Other-0.131135 %62 %
176Uses Schema datepublished   Other-0.131136 %57 %
177Uses JSON-LD text   Other-0.13118 %64 %
178Has Copyright   Trust-0.131161 %63 %
179Has OpenGraph Image   Relevancy-0.131151 %64 %
180Uses Schema ratingvalue   Other-0.131110 %60 %
181Uses JSON-LD availability   Other-0.13116 %31 %
182Word Count in Meta Description   Size-0.13412064 %76 %
183Entities in H4 Tags-0.1310221 %85 %
184Has Meta Twitter Card   Authority-0.131150 %68 %
185Uses JSON-LD NewsArticle   Other-0.13114 %22 %
186Uses JSON-LD Review   Other-0.13114 %49 %
187Uses JSON-LD datePublished   Other-0.131135 %58 %
188Number of Social Accounts   Authority-0.1315247 %78 %
189Headings Has Question   Other-0.131141 %75 %
190Uses Schema availability   Other-0.12116 %33 %
191Percentage of NoFollow Links   Authority-0.125225 %71 %
192Uses Schema item   Other-0.121125 %66 %
193Uses JSON-LD jobTitle   Other-0.12113 %36 %
194Uses JSON-LD Service   Other-0.12115 %36 %
195Number Of Claimed Brands   Other-0.12125723 %75 %
196Meta Description Tag Has Entities   Relevancy-0.121152 %80 %
197Uses Schema listitem   Other-0.121139 %69 %
198Variations making whole H1-H6 Tags   Relevancy-0.123114 %78 %
199Uses JSON-LD Answer   Other-0.12117 %63 %
200Uses Schema addresslocality   Other-0.121116 %63 %