Measures 143207 SEO Factors

141485 Built-In SEO Factors

132417 On-page SEO Factors

9068 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 2020-10     previous - today - next

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Distinct Entities Used   Diversity-0.3572686 %24 %
2Variations in HTML Tags   Relevancy-0.2768715789 %97 %
3Term Frequency   Relevancy-0.267689 %95 %
4Variations in Div Tags   Relevancy-0.2648011688 %96 %
5Variations in Body Tags   Relevancy-0.2556414183 %96 %
6Number of Factors Used   Diversity-0.2519413395 %89 %
7Variations in H1-H6 Tags   Relevancy-0.2555980 %93 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2550879 %93 %
9Variations in A Tags   Relevancy-0.242203280 %95 %
10Variations in A Tag HREF Attributes   Relevancy-0.232094273 %94 %
11Entities in Title Tag   Relevancy-0.236377 %23 %
12Variations in Search Result Display URL   Relevancy-0.234287 %83 %
13Variations in Search Result Link Text   Relevancy-0.234287 %83 %
14Variations in H1 and H2 Tags   Relevancy-0.2334576 %93 %
15Variations in P Tags   Relevancy-0.231493277 %95 %
16Variations in LI Tags   Relevancy-0.221662072 %95 %
17Exact Matches in the HTML Tag   Relevancy-0.221991144 %92 %
18LSI Words in Sentences   Relevancy-0.22422667978 %98 %
19Exact Matches in Body Tag   Relevancy-0.221511343 %92 %
20Variations in the Title Tag   Relevancy-0.224282 %84 %
21Variations in Sentences   Relevancy-0.21921974 %92 %
22Leading Variations in H1, H2, and H3 Tags   Relevancy-0.2115349 %88 %
23Variations in Span Tags   Relevancy-0.211181261 %89 %
24LSI Words in Title Tag   Relevancy-0.2123776 %93 %
25Leading Variations in H1-H6 Tags   Relevancy-0.221352 %90 %
26Variations in ALT Attributes   Relevancy-0.2571056 %91 %
27Keywords in pages top 10 most used phrases-0.25268 %89 %
28Variations in Search Result URL Path   Relevancy-0.25268 %74 %
29Variations in H2 Tags   Relevancy-0.233448 %91 %
30Page Size Kilobytes   Size-0.276213694 %89 %
31Unabridged Word Count   Size-0.197379175894 %89 %
32Entities in H2 Tags-0.1933552 %24 %
33Variations in Meta Description   Relevancy-0.196261 %87 %
34Clean Text Kilobytes   Size-0.19401091 %88 %
35Body Tag Size Kilobytes   Size-0.195268083 %91 %
36Exact Matches in H1-H6 Tags   Relevancy-0.1911233 %90 %
37Entities in H3 Tags-0.1920543 %24 %
38Variations in Search Result URL   Relevancy-0.195265 %81 %
39Variations in Search Result Document File Name   Relevancy-0.194264 %68 %
40Word Count   Size-0.195562139293 %89 %
41Variations in Script Tags   Relevancy-0.1923043163 %94 %
42Variations in Absolute URLs   Relevancy-0.192584266 %91 %
43Number of HTML Tags   Size-0.19222687595 %90 %
44Variations in H1 Tags   Relevancy-0.193267 %81 %
45Entities in Meta Description Tag   Relevancy-0.188358 %21 %
46TF/IDF   Relevancy-0.181171 %81 %
47Keywords in pages top 5 most used phrases-0.184155 %87 %
48Ahrefs Referring Class C Addresses   Authority-0.189033445 %18 %
49Entities in H1 Tags-0.185260 %22 %
50Ahrefs Referring Domains   Authority-0.1820866145 %18 %
51Variations in First 100 Words   Relevancy-0.1827870 %79 %
52Ahrefs Referring IP Addresses   Authority-0.1814094645 %18 %
53Variations in H3 Tags   Relevancy-0.1818438 %91 %
54Variations in the Canonical URL   Relevancy-0.184251 %81 %
55Exact Matches in Title Tag   Relevancy-0.182131 %85 %
56Ahrefs Text Backlinks   Authority-0.18159175391945 %17 %
57Ahrefs Backlinks   Authority-0.17159220392345 %17 %
58Ahrefs Referring Pages   Authority-0.17159220392345 %17 %
59Search Result Publish Date-0.171999324010181384604987 %24 %
60Keywords in pages top 3 most used phrases-0.172145 %85 %
61Number of HTTPS Links   Authority-0.1754914488 %88 %
62LSI Words in Meta Description Tag   Relevancy-0.17691257 %91 %
63Leading Variations in Title Tag   Relevancy-0.171138 %76 %
64Ahrefs Rank   Authority-0.17361277 %15 %
65Number of Links   Authority-0.1755115991 %84 %
66Number of Sentences   Size-0.171933990 %87 %
67Title Tag Has Entities   Relevancy-0.171176 %20 %
68Number of DoFollow Links   Authority-0.1753415391 %84 %
69Leading Variations in H1 Tags   Relevancy-0.171133 %77 %
70Number of P Tags   Size-0.172303889 %87 %
71Number of Internal Links   Authority-0.1754114390 %85 %
72Exact Matches in A Tags   Relevancy-0.1735428 %90 %
73Ahrefs NoFollow Backlinks   Authority-0.171234435836 %18 %
74Variations in OpenGraph Title   Relevancy-0.164257 %77 %
75Number of Heading Tags   Size-0.16662291 %86 %
76Ahrefs Dofollow Backlinks   Authority-0.16146827325837 %17 %
77Variations in Nav Tags   Relevancy-0.161481443 %86 %
78Variations in TITLE Attributes   Relevancy-0.161291144 %87 %
79Variations in OpenGraph Description   Relevancy-0.167250 %82 %
80LSI Words in H2 Tags   Relevancy-0.162491858 %94 %
81Variations in the last 100 words   Relevancy-0.1615456 %79 %
82Entities in H4 Tags-0.1612225 %24 %
83Has Entities in H1 Tags   Relevancy-0.161162 %22 %
84Number of Questions   Size-0.1629662 %83 %
85Variations Making Whole Span Tags   Relevancy-0.168119 %85 %
86Variations in Strong Tags   Relevancy-0.1640438 %81 %
87Number of Images with ALT Text   Size-0.161061983 %87 %
88Inline JavaScript Kilobytes   Size-0.163373089 %82 %
89Search Result Uses HTTPS   Other-0.161183 %78 %
90Number of H3 Tags   Size-0.1623968 %84 %
91Exact Matches in H1 Tags   Relevancy-0.162124 %82 %
92Number of Images   Size-0.162823190 %85 %
93Number of Questions In Headings   Size-0.167233 %85 %
94Variations in Section Tags   Relevancy-0.15871736 %87 %
95Number of Absolute URLs   Authority-0.1545913892 %84 %
96Leading Variations in H2 Tags   Relevancy-0.156122 %83 %
97Head Size Kilobytes   Size-0.151673589 %84 %
98LSI Words in H1 Tags   Relevancy-0.1529664 %87 %
99DomDetailer Majestic Referring Subnets   Authority-0.15398211198075 %15 %
100Variations making whole A Tags   Relevancy-0.156132 %85 %
101Ahrefs Has Text Backlinks   Authority-0.151144 %18 %
102LSI Words in H3 Tags   Relevancy-0.151582352 %91 %
103Exact Matches in Sentences   Relevancy-0.1518223 %88 %
104DomDetailer Majestic IPs   Authority-0.151980954845475 %15 %
105Ahrefs Has NoFollow Backlinks   Authority-0.151136 %17 %
106Number of H2 Tags   Size-0.1537673 %88 %
107Variations in Footer Tags   Relevancy-0.1531534 %82 %
108Has Entities in H2 Tags   Relevancy-0.151152 %22 %
109Ahrefs Has Dofollow Backlinks   Authority-0.151137 %17 %
110DomDetailer Majestic Referring Domains   Authority-0.15158969731889876 %15 %
111Exact Matches in H2 Tags   Relevancy-0.156115 %88 %
112Ahrefs Has Backlinks   Authority-0.151145 %18 %
113Variations in I Tags   Relevancy-0.1433328 %84 %
114Leading Variations in H3 Tags   Relevancy-0.1410218 %82 %
115Inline CSS Kilobytes   Size-0.141562457 %83 %
116Has Entities in H3 Tags   Relevancy-0.141145 %22 %
117Percentage of DoFollow Internal Links   Authority-0.14948290 %72 %
118DomDetailer Majestic CF   Authority-0.14622874 %14 %
119Number of Questions In H2 Tags   Size-0.143118 %82 %
120Ahrefs Internal Links   Authority-0.145125861 %19 %
121Variations Making Whole LI Tags   Relevancy-0.144124 %80 %
122Variations in Main Tags   Relevancy-0.142554128 %82 %
123Variations in H4-H6 Tags   Relevancy-0.1411222 %84 %
124Number of External Links   Authority-0.14661785 %73 %
125Word Count in Meta Description   Size-0.14572469 %77 %
126Exact Matches in Meta Description   Relevancy-0.142119 %88 %
127Ahrefs Pages   Size-0.148262 %17 %
128Headings Has Question   Other-0.141133 %77 %
129Load Time Milliseconds   Performance-0.1434089276895 %67 %
130Percentage of DoFollow Links   Authority-0.141009390 %71 %
131DomDetailer Moz PA   Authority-0.14663477 %14 %
132Meta Description Length   Size-0.1426113069 %75 %
133Variations in H4 Tags   Relevancy-0.1410217 %83 %
134Number of US Phone Numbers   Trust-0.13215933 %77 %
135Ahrefs Linked Root Domains   Authority-0.1329660 %18 %
136Variations in Article Tags   Relevancy-0.131121728 %74 %
137Ahrefs Word Count   Size-0.13317192952 %11 %
138Number of DoFollow External Links   Authority-0.13431482 %73 %
139Has Meta Description   Relevancy-0.131170 %76 %
140Search Result Number of Dirs in Path   Other-0.134283 %60 %
141Meta Description Tag Has Entities   Relevancy-0.131159 %20 %
142DomDetailer Moz Rank   Authority-0.138474 %13 %
143Has Privacy Policy   Trust-0.131147 %71 %
144Variations making whole H1-H6 Tags   Relevancy-0.132114 %78 %
145DomDetailer Majestic Links   Authority-0.13952068201017890275 %15 %
146Number of Questions In H3 Tags   Size-0.134114 %76 %
147Ahrefs Has External Links   Authority-0.131154 %17 %
148Number of Forms   Technology-0.1313371 %73 %
149Flesch Kincaid Reading Grade Level   Other-0.137283 %66 %
150Ahrefs Domain Rating   Authority-0.13833466 %11 %
151DomDetailer Moz DA   Authority-0.13773275 %13 %
152Number of H4 Tags   Size-0.1312547 %76 %
153Number of HREF Lang Tags   Size-0.1318211 %77 %
154DomDetailer Facebook Shares   Authority-0.133450692-174936267 %14 %
155Ahrefs External Links   Authority-0.131421455 %18 %
156Has Canonical URL   Authority-0.131173 %73 %
157Variations making whole H1, H2, and H3 Tags   Relevancy-0.132112 %76 %
158Search Result Link Text Length   Size-0.13785494 %65 %
159Variations in Class Attributes   Relevancy-0.1383522 %79 %
160Has JSON-LD AggregateRating-0.12116 %66 %
161DomDetailer Moz Links   Authority-0.12975463982029555876 %15 %
162Has US Phone Number   Trust-0.121133 %60 %
163Has Entities in H4 Tags   Relevancy-0.121127 %19 %
164DomDetailer Majestic TF   Authority-0.12522266 %14 %
165Variations in Search Result Summary   Relevancy-0.126380 %72 %
166Variations in Em Tags   Relevancy-0.1230214 %72 %
167Has JSON-LD Search Action-0.121127 %57 %
168Variations in Aside Tags   Relevancy-0.1240615 %76 %
169Number of Nofollow Links   Authority-0.1269739 %75 %
170Number of NoFollow External Links   Authority-0.1238325 %71 %
171Leading Variations in Meta Description   Relevancy-0.121115 %72 %
172Meta Description Tag Has Question   Other-0.12118 %55 %
173Variations Making Whole Strong Tags   Relevancy-0.12418 %77 %
174Number of Videos   Technology-0.124111 %61 %
175Has JSON-LD Answer-0.12113 %39 %
176Has JSON-LD Question-0.12113 %38 %
177Number of Images without ALT Text   Size-0.122571271 %73 %
178Ahrefs Has Internal Links   Authority-0.121159 %17 %
179LSI Words in H4 Tags   Relevancy-0.1250934 %84 %
180Ahrefs Has Linked Root Domains   Authority-0.121159 %17 %
181Variations in Value Attributes   Relevancy-0.1218214 %79 %
182Title Word Count   Size-0.12151093 %66 %
183Has OpenGraph Image   Relevancy-0.121155 %61 %
184Has JSON-LD Website-0.121130 %59 %
185Leading Variations in H4-H6 Tags   Relevancy-0.127111 %77 %
186Number of HTML Comments   Size-0.121943078 %72 %
187Ahrefs Image Backlinks-0.127151975315 %15 %
188Number of YouTube Embeds   Technology-0.124111 %61 %
189Has FavIcon   Technology-0.121177 %66 %
190Keywords in pages most used phrase-0.121121 %78 %
191Number of CSS Includes   Technology-0.1218886 %57 %
192Number of Includes   Technology-0.1222886 %57 %
193Has Form   Technology-0.111170 %67 %
194Title Length   Size-0.11985892 %63 %
195Variations in Meta Twitter Content   Relevancy-0.112124 %66 %
196Number of JavaScript Includes   Technology-0.11281587 %65 %
197Variations in B Tags   Relevancy-0.1111213 %76 %
198Variations in Meta Keywords   Relevancy-0.117219 %71 %
199Variations in Meta Twitter Description   Relevancy-0.114121 %72 %
200Variations in ID Attributes   Relevancy-0.11719 %80 %