Measures 138243 SEO Factors

136521 Built-In SEO Factors

127937 On-page SEO Factors

8584 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 ( 53968 )
Relevancy SEO Factors ( 53228 )
Other SEO Factors ( 26639 )
Local SEO Factors ( 8408 )
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 )

SEO Factor Type

Size SEO Factors ( 53964 )
Keywords SEO Factors ( 41212 )
Schema SEO Factors ( 26585 )
LSI SEO Factors ( 8465 )
Local SEO Factors ( 8409 )
Entities SEO Factors ( 3529 )
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 2025-01     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-0.24112127786 %71 %
2Number of Distinct Entities Used   Diversity-0.23692880 %94 %
3Number of Unique Variations Used   Diversity-0.2355985 %89 %
4Search Result Domain is .com, .net, or .org   Other-0.22115 %78 %
5Entities in Title Tag   Relevancy-0.218372 %92 %
6Number of Top 200 Shared Factors Used   Diversity-0.21534197 %94 %
7Variations in Search Result Document File Name   Relevancy-0.2110255 %81 %
8Search Result Domain is .com   Other-0.21114 %79 %
9Number of Top 100 Shared Factors Used   Diversity-0.21403197 %94 %
10Load Time Milliseconds   Performance-0.2117725158187 %90 %
11Variations in Search Result Link Text   Relevancy-0.2118287 %80 %
12Variations in Search Result Display URL   Relevancy-0.2118287 %82 %
13Variations in Search Result URL Path   Relevancy-0.215258 %81 %
14Variations in Search Result URL   Relevancy-0.220267 %77 %
15Variations in H1 and H2 Tags   Relevancy-0.284670 %86 %
16Number of Factors Used   Diversity-0.252519497 %89 %
17Variations in the Title Tag   Relevancy-0.219275 %84 %
18Variations in H1, H2, and H3 Tags   Relevancy-0.19191972 %89 %
19Number of Top 50 Shared Factors Used   Diversity-0.19171397 %91 %
20Variations in H1-H6 Tags   Relevancy-0.191991073 %89 %
21Entities in Sentences   Relevancy-0.19124413474 %93 %
22Variations in First 100 Words   Relevancy-0.191991077 %85 %
23Variations in Body Tags   Relevancy-0.199926559184 %89 %
24Entities in the HTML Tag   Relevancy-0.19133713776 %93 %
25Variations in HTML Tags   Relevancy-0.199926559184 %90 %
26Number of Referring Domains   Authority-0.1916105248 %28 %
27Variations in Sentences   Relevancy-0.1949556779 %89 %
28Variations in Div Tags   Relevancy-0.193327226381 %89 %
29Number of Includes   Technology-0.19602482 %78 %
30Variations in P Tags   Relevancy-0.1992916375 %88 %
31Variations in the Canonical URL   Relevancy-0.1957260 %84 %
32Number of Do Follow Backlinks   Authority-0.19258226442143 %27 %
33Entities in H2 Tags-0.1930655 %91 %
34Number of Backlinks   Authority-0.19266009459247 %28 %
35Entities in H1 Tags-0.197258 %88 %
36Variations in H1 Tags   Relevancy-0.1818262 %82 %
37Clean Keyword Density in the HTML Tag   Relevancy-0.18198678 %83 %
38Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821249 %86 %
39Leading Variations in H1-H6 Tags   Relevancy-0.1822251 %85 %
40Number of Facebook Pages   Authority-0.1816263 %81 %
41Number of No Follow Backlinks   Authority-0.182328540139 %27 %
42Variations in LI Tags   Relevancy-0.1827933173 %87 %
43Variations in A Tags   Relevancy-0.1845513774 %86 %
44Term Frequency   Relevancy-0.186384 %89 %
45Variations in H2 Tags   Relevancy-0.1874453 %85 %
46Variations in Meta Description   Relevancy-0.1754362 %84 %
47Entities in H3 Tags-0.1767645 %92 %
48Variations in A Tag HREF Attributes   Relevancy-0.1725256271 %87 %
49Number of CSS Includes   Technology-0.1724974 %75 %
50Entities in Meta Description Tag   Relevancy-0.1713360 %86 %
51Variations in Distinct A Tag HREF Attributes   Relevancy-0.1715944271 %87 %
52Variations in Absolute URLs   Relevancy-0.171209310573 %89 %
53Has JSON-LD Schema Markup   Relevancy-0.171156 %76 %
54Variation Density in Top 30KB   Relevancy-0.17304472 %84 %
55Variations in OpenGraph Title   Relevancy-0.1716259 %81 %
56Variations in OpenGraph Description   Relevancy-0.1653255 %82 %
57Leading Variations in Title Tag   Relevancy-0.161134 %78 %
58Number of Instagram Pages   Authority-0.1611245 %77 %
59Leading Variations in H1 Tags   Relevancy-0.163130 %82 %
60Unabridged Word Count   Size-0.1637249184387 %83 %
61Word Count   Size-0.1628330146787 %83 %
62Variations in ALT Attributes   Relevancy-0.16222953 %84 %
63Clean Text Kilobytes   Size-0.162521281 %85 %
64Variations in Span Tags   Relevancy-0.1610861559 %86 %
65Number of HTML Tags   Size-0.16372299887 %83 %
66TF/IDF   Relevancy-0.161170 %82 %
67Variations in Script Tags   Relevancy-0.162424616770 %85 %
68Variations in Nav Tags   Relevancy-0.1693314753 %83 %
69Number of Sentences   Size-0.15129312086 %84 %
70Variations in H3 Tags   Relevancy-0.1597440 %84 %
71Number of Images   Size-0.152372982 %82 %
72Has Entities in H1 Tags   Relevancy-0.151159 %82 %
73Variation Count in Top 30KB   Relevancy-0.1558845174 %83 %
74Number of Heading Tags   Size-0.15912081 %80 %
75Exact Matches in the HTML Tag   Relevancy-0.154921126 %84 %
76Number of P Tags   Size-0.151433781 %82 %
77Number of Images with ALT Text   Size-0.152302077 %83 %
78LSI Words in Sentences   Relevancy-0.15439259361 %93 %
79LSI Words in Title Tag   Relevancy-0.1515561 %90 %
80Title Tag Has Entities   Relevancy-0.151172 %84 %
81Number of DoFollow Links   Authority-0.1573914184 %81 %
82Search Result Number of Dirs in Path   Other-0.154277 %76 %
83Number of Internal Links   Authority-0.1573512883 %81 %
84Number of HTTPS Links   Authority-0.1573814284 %82 %
85Leading Variations in H2 Tags   Relevancy-0.157126 %82 %
86Number of Links   Authority-0.1573914584 %79 %
87Variations in the last 100 words   Relevancy-0.15198660 %81 %
88Number of Absolute URLs   Authority-0.15174626486 %82 %
89Percentage of DoFollow Internal Links   Authority-0.14987583 %82 %
90Number of H2 Tags   Size-0.1425772 %81 %
91Number of Questions   Size-0.141801169 %84 %
92Variations in Main Tags   Relevancy-0.141275312338 %80 %
93Number of Facebook Accounts   Authority-0.1412132 %74 %
94Percentage of DoFollow Links   Authority-0.141008684 %87 %
95Page Size Kilobytes   Size-0.14125626187 %82 %
96Variations in Footer Tags   Relevancy-0.1439702741 %82 %
97Number Of JSON-LD Types   Relevancy-0.1415161860 %82 %
98Number of LinkedIn Pages   Authority-0.147129 %76 %
99Has Entities in H2 Tags   Relevancy-0.141156 %82 %
100Inline CSS Kilobytes   Size-0.142185666 %83 %
101Number of External Links   Authority-0.141791681 %81 %
102Variations in Style Tags   Relevancy-0.142668010820 %79 %
103Number of DoFollow External Links   Authority-0.14531479 %81 %
104Number of HTML Comments   Size-0.145974577 %81 %
105Number of H3 Tags   Size-0.1431864 %81 %
106Variations in Strong Tags   Relevancy-0.14184432 %78 %
107Number of Questions In Headings   Size-0.149238 %81 %
108Number of H1 Tags   Size-0.1418275 %81 %
109Number of Twitter Accounts   Authority-0.143132 %73 %
110Variations in Section Tags   Relevancy-0.1411132942 %80 %
111Number of JavaScript Includes   Technology-0.14511784 %77 %
112Variations in TITLE Attributes   Relevancy-0.14782941 %79 %
113Flesch Kincaid Reading Grade Level   Other-0.147294 %86 %
114Number of US Phone Numbers   Trust-0.146611550 %79 %
115Variations Making Whole Span Tags   Relevancy-0.1417122 %78 %
116Search Result Host Length   Size-0.13251887 %75 %
117Search Result Domain Length   Size-0.13251887 %78 %
118Number of Social Pages   Authority-0.1329468 %79 %
119Variations Making Whole LI Tags   Relevancy-0.1317127 %75 %
120Variations making whole H1-H6 Tags   Relevancy-0.132114 %72 %
121Search Result Uses HTTPS   Other-0.131186 %85 %
122Entities in H4 Tags-0.1321222 %83 %
123Number of Email Addresses   Trust-0.13127645 %78 %
124Variations making whole H1, H2, and H3 Tags   Relevancy-0.132112 %72 %
125LSI Words in H2 Tags   Relevancy-0.13801651 %90 %
126Has Entities in H3 Tags   Relevancy-0.131146 %82 %
127Has Meta Viewport   Technology-0.131185 %79 %
128Number of Prices   Size-0.135646270 %82 %
129LSI Words in H1 Tags   Relevancy-0.1316452 %89 %
130LSI Words in Meta Description Tag   Relevancy-0.1342950 %90 %
131Number of Questions In H2 Tags   Size-0.135124 %76 %
132Variations making whole A Tags   Relevancy-0.1335233 %76 %
133Has US Phone Number   Trust-0.131152 %71 %
134Has Canonical URL   Authority-0.131174 %79 %
135Inline JavaScript Kilobytes   Size-0.1310688584 %82 %
136Word Count in Meta Description   Size-0.13722069 %76 %
137Number of Images without ALT Text   Size-0.131421061 %80 %
138Headings Has Question   Other-0.131139 %74 %
139Meta Description Tag Has Entities   Relevancy-0.131160 %78 %
140Meta Description Length   Size-0.1350112369 %78 %
141Leading Variations in H3 Tags   Relevancy-0.1317119 %79 %
142Percentage of DoFollow External Links   Authority-0.13281278 %77 %
143Has Meta Charset   Technology-0.131179 %74 %
144Variations in ID Attributes   Relevancy-0.13525415 %76 %
145Search Result URL Length   Size-0.131046697 %53 %
146Exact Matches in H1-H6 Tags   Relevancy-0.1211117 %84 %
147Has Meta Description   Relevancy-0.121169 %71 %
148Number of Social Accounts   Authority-0.1212250 %76 %
149Number Of Claimed Brands   Other-0.12151324 %73 %
150Has Email   Trust-0.121145 %71 %
151Has Privacy Policy   Trust-0.121161 %73 %
152Title Word Count   Size-0.1229885 %75 %
153Variations in Meta Twitter Description   Relevancy-0.1231126 %74 %
154Variations in Article Tags   Relevancy-0.1211872527 %71 %
155Variations in Meta Twitter Content   Relevancy-0.1210128 %71 %
156Uses Schema addressregion   Other-0.121118 %62 %
157Uses JSON-LD addressRegion   Other-0.121116 %63 %
158Uses Schema postaladdress   Other-0.121119 %62 %
159Variations in HTML Comment Tags   Relevancy-0.12897311 %73 %
160Has Schema Markup   Relevancy-0.121166 %73 %
161Uses Schema addresslocality   Other-0.121118 %63 %
162Variations in Button Tags   Relevancy-0.121863810 %77 %
163Exact Matches in Top 30KB   Relevancy-0.1241216 %82 %
164Uses JSON-LD streetAddress   Other-0.121115 %63 %
165Is Home Page   Other-0.121117 %43 %
166Uses JSON-LD PostalAddress   Other-0.121117 %65 %
167Has FavIcon   Technology-0.121176 %76 %
168Variations in H4-H6 Tags   Relevancy-0.1243222 %75 %
169Variations in Search Result Summary   Relevancy-0.1255389 %61 %
170Uses JSON-LD addressLocality   Other-0.121116 %64 %
171Number of Questions In H3 Tags   Size-0.124117 %79 %
172Title Length   Size-0.122025385 %74 %
173Uses JSON-LD name   Other-0.121156 %72 %
174Has OpenGraph Type   Relevancy-0.121163 %72 %
175Variations in Class Attributes   Relevancy-0.1280753227 %77 %
176Has Meta Twitter Card   Authority-0.121154 %66 %
177Average Words Per Sentence   Size-0.122743883 %78 %
178Variations in I Tags   Relevancy-0.12250628 %72 %
179Has Contact Page   Trust-0.121168 %69 %
180Is OpenGraph Type Article   Technology-0.121137 %61 %
181Uses JSON-LD url-0.121147 %73 %
182Is Article Page   Other-0.121146 %65 %
183Uses Schema name   Other-0.121162 %72 %
184Uses Schema streetaddress   Other-0.121117 %63 %
185Uses Schema postalcode   Other-0.121117 %62 %
186Number of Meta Generator Tags   Technology-0.122136 %65 %
187Uses Schema listitem   Other-0.121142 %67 %
188Uses JSON-LD reviewBody   Other-0.12113 %36 %
189Uses Schema geocircle   Other-0.12112 %18 %
190Uses JSON-LD description   Other-0.121144 %66 %
191Uses JSON-LD image   Other-0.121116 %68 %
192Uses Schema breadcrumblist   Other-0.121142 %67 %
193Number of Forms   Technology-0.1217257 %72 %
194Exact Matches in Sentences   Relevancy-0.1280318 %86 %
195Uses JSON-LD datePublished   Other-0.121136 %62 %
196Uses Schema url   Other-0.121156 %68 %
197Uses Schema currenciesaccepted   Other-0.12113 %22 %
198Number of Nofollow Links   Authority-0.12131428 %76 %
199Variations in H4 Tags   Relevancy-0.1232117 %73 %
200Uses JSON-LD postalCode   Other-0.121115 %63 %