[ Ahrefs, SEMRush, DomDetailer, SpyFu APIs ]
[ Wappalyzer API ]
SEO Factor ClassSize ( 54484 )Relevancy ( 54123 ) Other ( 32998 ) Local ( 9000 ) Technology ( 1599 ) Authority ( 163 ) Pay Per Click ( 29 ) Diversity ( 15 ) Trust ( 15 ) Easy ( 3 ) Performance ( 1 ) This factor is measured within the schema markup of the web page. ( 1 ) |
SEO Factor TypeSize ( 54480 )Keywords ( 42020 ) Schema ( 32944 ) Local ( 9001 ) LSI ( 8513 ) Entities ( 3568 ) Other ( 1705 ) Backlinks ( 72 ) Social ( 58 ) Page Links ( 29 ) Structure ( 23 ) Meta ( 14 ) On Page ( 3 ) This factor does not have an applicable match type. ( 1 ) |
Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Number of Factors Used Diversity | -0.3 | 191 | 113 | 94 % | 89 % |
| 2 | Variations in HTML Tags Relevancy | -0.28 | 1762 | 206 | 86 % | 92 % |
| 3 | Term Frequency Relevancy | -0.27 | 9 | 6 | 86 % | 90 % |
| 4 | Ahrefs Rank Authority | -0.27 | 34 | 16 | 94 % | 15 % |
| 5 | Variations in Body Tags Relevancy | -0.27 | 1675 | 169 | 82 % | 93 % |
| 6 | Variations in Sentences Relevancy | -0.26 | 433 | 54 | 84 % | 91 % |
| 7 | Variations in Div Tags Relevancy | -0.26 | 1412 | 114 | 83 % | 91 % |
| 8 | Ahrefs Referring Class C Addresses Authority | -0.25 | 881 | 32 | 53 % | 20 % |
| 9 | Ahrefs Referring IP Addresses Authority | -0.25 | 1225 | 37 | 53 % | 20 % |
| 10 | Ahrefs Referring Domains Authority | -0.24 | 2104 | 52 | 53 % | 21 % |
| 11 | Variations in A Tag HREF Attributes Relevancy | -0.24 | 894 | 50 | 76 % | 89 % |
| 12 | Variations in H1-H6 Tags Relevancy | -0.24 | 54 | 7 | 77 % | 90 % |
| 13 | Variations in A Tags Relevancy | -0.23 | 192 | 27 | 78 % | 91 % |
| 14 | Ahrefs Text Backlinks Authority | -0.23 | 451657 | 6383 | 52 % | 20 % |
| 15 | Ahrefs Backlinks Authority | -0.23 | 451666 | 6405 | 53 % | 20 % |
| 16 | Ahrefs Referring Pages Authority | -0.23 | 451667 | 6410 | 53 % | 21 % |
| 17 | Ahrefs NoFollow Backlinks Authority | -0.23 | 57672 | 529 | 41 % | 21 % |
| 18 | Variations in P Tags Relevancy | -0.23 | 254 | 30 | 76 % | 90 % |
| 19 | Variations in H1, H2, and H3 Tags Relevancy | -0.23 | 46 | 6 | 76 % | 90 % |
| 20 | Variations in First 100 Words Relevancy | -0.22 | 41 | 8 | 71 % | 80 % |
| 21 | Variations in LI Tags Relevancy | -0.22 | 143 | 20 | 76 % | 90 % |
| 22 | Variations in Absolute URLs Relevancy | -0.22 | 925 | 58 | 74 % | 87 % |
| 23 | Search Result Number of Site Links Other | -0.22 | 2 | 1 | 2 % | 48 % |
| 24 | Ahrefs Dofollow Backlinks Authority | -0.22 | 450093 | 5874 | 46 % | 20 % |
| 25 | Variations in Search Result Display URL Relevancy | -0.22 | 5 | 2 | 86 % | 78 % |
| 26 | Variations in Search Result Link Text Relevancy | -0.22 | 5 | 2 | 86 % | 78 % |
| 27 | Keywords in pages top 10 most used phrases | -0.22 | 6 | 2 | 68 % | 83 % |
| 28 | Ahrefs Has NoFollow Backlinks Authority | -0.21 | 1 | 1 | 40 % | 20 % |
| 29 | Variations in H1 and H2 Tags Relevancy | -0.21 | 31 | 4 | 73 % | 87 % |
| 30 | Clean Text Kilobytes Size | -0.21 | 91 | 10 | 85 % | 78 % |
| 31 | Ahrefs Has Text Backlinks Authority | -0.21 | 1 | 1 | 52 % | 20 % |
| 32 | Variations in the Title Tag Relevancy | -0.21 | 5 | 2 | 79 % | 77 % |
| 33 | TF/IDF Relevancy | -0.21 | 1 | 1 | 70 % | 76 % |
| 34 | Exact Matches in the HTML Tag Relevancy | -0.2 | 686 | 12 | 40 % | 81 % |
| 35 | Ahrefs Has Backlinks Authority | -0.2 | 1 | 1 | 53 % | 20 % |
| 36 | Word Count Size | -0.2 | 4534 | 1262 | 91 % | 80 % |
| 37 | Unabridged Word Count Size | -0.2 | 19027 | 1606 | 91 % | 79 % |
| 38 | Exact Matches in Sentences Relevancy | -0.2 | 77 | 4 | 36 % | 79 % |
| 39 | Ahrefs Has Dofollow Backlinks Authority | -0.2 | 1 | 1 | 45 % | 19 % |
| 40 | Number of Sentences Size | -0.2 | 305 | 62 | 90 % | 81 % |
| 41 | Exact Matches in Body Tag Relevancy | -0.2 | 884 | 15 | 39 % | 83 % |
| 42 | Keywords in pages top 5 most used phrases | -0.2 | 4 | 2 | 59 % | 83 % |
| 43 | Variations in Search Result URL Relevancy | -0.2 | 5 | 2 | 65 % | 71 % |
| 44 | Variations in Script Tags Relevancy | -0.2 | 1419 | 38 | 59 % | 86 % |
| 45 | Leading Variations in H1-H6 Tags Relevancy | -0.19 | 40 | 2 | 50 % | 86 % |
| 46 | Variations in Meta Description Relevancy | -0.19 | 14 | 2 | 59 % | 83 % |
| 47 | Variations in Search Result URL Path Relevancy | -0.19 | 5 | 2 | 61 % | 70 % |
| 48 | Keywords in pages top 3 most used phrases | -0.19 | 3 | 1 | 50 % | 80 % |
| 49 | Leading Variations in H1, H2, and H3 Tags Relevancy | -0.19 | 25 | 2 | 47 % | 86 % |
| 50 | Exact Matches in H1-H6 Tags Relevancy | -0.19 | 13 | 2 | 29 % | 73 % |
| 51 | Variations in H2 Tags Relevancy | -0.19 | 31 | 3 | 45 % | 88 % |
| 52 | Variations in ALT Attributes Relevancy | -0.19 | 164 | 7 | 49 % | 87 % |
| 53 | Variations in the last 100 words Relevancy | -0.19 | 22 | 5 | 61 % | 75 % |
| 54 | Number of HTML Tags Size | -0.19 | 3361 | 899 | 94 % | 79 % |
| 55 | Number of P Tags Size | -0.18 | 185 | 35 | 86 % | 81 % |
| 56 | Variations in Span Tags Relevancy | -0.18 | 98 | 10 | 58 % | 86 % |
| 57 | Variations in H1 Tags Relevancy | -0.18 | 6 | 2 | 64 % | 78 % |
| 58 | Variations in the Canonical URL Relevancy | -0.18 | 5 | 2 | 49 % | 73 % |
| 59 | Ahrefs Word Count Size | -0.18 | 3878 | 1301 | 68 % | 13 % |
| 60 | Number of Heading Tags Size | -0.18 | 78 | 20 | 89 % | 81 % |
| 61 | Variations in Search Result Document File Name Relevancy | -0.18 | 5 | 2 | 57 % | 67 % |
| 62 | Number of HTTPS Links Authority | -0.17 | 617 | 128 | 87 % | 80 % |
| 63 | Number of Images Size | -0.17 | 126 | 27 | 89 % | 80 % |
| 64 | Variations in H3 Tags Relevancy | -0.17 | 25 | 3 | 34 % | 86 % |
| 65 | Number of Images with ALT Text Size | -0.17 | 97 | 16 | 81 % | 81 % |
| 66 | Body Tag Size Kilobytes Size | -0.17 | 610 | 102 | 90 % | 78 % |
| 67 | Page Size Kilobytes Size | -0.17 | 896 | 145 | 94 % | 76 % |
| 68 | Number of Links Authority | -0.17 | 644 | 143 | 91 % | 78 % |
| 69 | Exact Matches in Title Tag Relevancy | -0.17 | 2 | 1 | 28 % | 65 % |
| 70 | Number of Internal Links Authority | -0.17 | 611 | 126 | 90 % | 78 % |
| 71 | Ahrefs Internal Links Authority | -0.17 | 372 | 76 | 66 % | 21 % |
| 72 | Ahrefs Image Backlinks | -0.17 | 47653 | 879 | 20 % | 17 % |
| 73 | Variations in Nav Tags Relevancy | -0.17 | 148 | 15 | 42 % | 82 % |
| 74 | Average Words Per Sentence Size | -0.17 | 351 | 37 | 86 % | 65 % |
| 75 | Number of Absolute URLs Authority | -0.17 | 861 | 173 | 93 % | 77 % |
| 76 | Number of DoFollow Links Authority | -0.17 | 636 | 137 | 91 % | 78 % |
| 77 | Exact Matches in A Tags Relevancy | -0.17 | 58 | 3 | 25 % | 70 % |
| 78 | Leading Variations in Title Tag Relevancy | -0.17 | 1 | 1 | 36 % | 75 % |
| 79 | Ahrefs External Links Authority | -0.16 | 94 | 15 | 61 % | 20 % |
| 80 | Variations in Summary Tags Relevancy | -0.16 | 286 | 15 | 46 % | 81 % |
| 81 | Ahrefs Linked Root Domains Authority | -0.16 | 26 | 7 | 66 % | 20 % |
| 82 | Exact Matches in H1 Tags Relevancy | -0.16 | 2 | 1 | 22 % | 62 % |
| 83 | Variations in OpenGraph Title Relevancy | -0.16 | 4 | 1 | 49 % | 74 % |
| 84 | Variations in OpenGraph Description Relevancy | -0.16 | 11 | 2 | 43 % | 77 % |
| 85 | Ahrefs Has Image Backlinks Authority | -0.16 | 1 | 1 | 20 % | 17 % |
| 86 | Ahrefs Pages Size | -0.16 | 5 | 2 | 67 % | 20 % |
| 87 | Load Time Milliseconds Performance | -0.16 | 83757 | 4174 | 94 % | 68 % |
| 88 | Leading Variations in H1 Tags Relevancy | -0.16 | 2 | 1 | 31 % | 77 % |
| 89 | Number of H3 Tags Size | -0.16 | 34 | 8 | 65 % | 79 % |
| 90 | Number of H2 Tags Size | -0.16 | 27 | 6 | 71 % | 78 % |
| 91 | Ahrefs Page Size Size | -0.16 | 58327 | 23283 | 69 % | 13 % |
| 92 | Variations Making Whole Span Tags Relevancy | -0.16 | 19 | 1 | 21 % | 77 % |
| 93 | Exact Matches in H2 Tags Relevancy | -0.16 | 8 | 1 | 14 % | 63 % |
| 94 | Flesch Kincaid Reading Grade Level Other | -0.16 | 88 | 16 | 89 % | 63 % |
| 95 | Variations making whole A Tags Relevancy | -0.16 | 66 | 2 | 35 % | 81 % |
| 96 | Variations in TITLE Attributes Relevancy | -0.16 | 427 | 8 | 46 % | 83 % |
| 97 | Ahrefs Has Linked Root Domains Authority | -0.16 | 1 | 1 | 65 % | 18 % |
| 98 | Number of External Links Authority | -0.16 | 146 | 18 | 85 % | 73 % |
| 99 | Ahrefs Has Internal Links Authority | -0.16 | 1 | 1 | 64 % | 18 % |
| 100 | Leading Variations in H2 Tags Relevancy | -0.15 | 11 | 1 | 21 % | 82 % |
| 101 | Inline JavaScript Kilobytes Size | -0.15 | 487 | 40 | 87 % | 76 % |
| 102 | Variations in Strong Tags Relevancy | -0.15 | 52 | 3 | 31 % | 81 % |
| 103 | Variations in Footer Tags Relevancy | -0.15 | 207 | 6 | 35 % | 79 % |
| 104 | Flesch Kincaid Reading Ease | -0.15 | 137 | 69 | 90 % | 68 % |
| 105 | Has Email Trust | -0.15 | 1 | 1 | 36 % | 54 % |
| 106 | Ahrefs Images Relevancy | -0.15 | 57 | 18 | 65 % | 13 % |
| 107 | Variations Making Whole LI Tags Relevancy | -0.15 | 11 | 1 | 26 % | 78 % |
| 108 | Keywords in pages most used phrase | -0.15 | 1 | 1 | 28 % | 71 % |
| 109 | Exact Matches in Meta Description Relevancy | -0.15 | 2 | 1 | 17 % | 62 % |
| 110 | Number of Email Addresses Trust | -0.15 | 91 | 3 | 37 % | 68 % |
| 111 | Ahrefs Has External Links Authority | -0.15 | 1 | 1 | 59 % | 18 % |
| 112 | Title Has Sentiment Words Other | -0.15 | 1 | 1 | 17 % | 63 % |
| 113 | Title Has Sales Words Other | -0.15 | 1 | 1 | 17 % | 63 % |
| 114 | Title Has Best Other | -0.15 | 1 | 1 | 13 % | 51 % |
| 115 | Head Size Kilobytes Size | -0.15 | 464 | 39 | 91 % | 75 % |
| 116 | Variations in Section Tags Relevancy | -0.15 | 116 | 14 | 34 % | 81 % |
| 117 | Number of Social Pages Authority | -0.15 | 45 | 2 | 46 % | 68 % |
| 118 | Variations in Article Tags Relevancy | -0.15 | 240 | 19 | 30 % | 73 % |
| 119 | Variations in Class Attributes Relevancy | -0.15 | 274 | 7 | 26 % | 76 % |
| 120 | Number of Social Accounts Authority | -0.15 | 19 | 2 | 54 % | 70 % |
| 121 | Has Canonical URL Authority | -0.14 | 1 | 1 | 67 % | 68 % |
| 122 | Number of US Phone Numbers Trust | -0.14 | 215 | 7 | 41 % | 73 % |
| 123 | Word Count in Meta Description Size | -0.14 | 95 | 21 | 68 % | 76 % |
| 124 | Variations making whole H1-H6 Tags Relevancy | -0.14 | 13 | 1 | 16 % | 73 % |
| 125 | Number of DoFollow External Links Authority | -0.14 | 164 | 15 | 83 % | 71 % |
| 126 | Leading Variations in H3 Tags Relevancy | -0.14 | 14 | 1 | 16 % | 78 % |
| 127 | Variations in Search Result Summary Relevancy | -0.14 | 9 | 3 | 89 % | 68 % |
| 128 | Meta Description Length Size | -0.14 | 658 | 125 | 68 % | 76 % |
| 129 | Variations in Host Citations Relevancy | -0.14 | 468 | 10 | 15 % | 62 % |
| 130 | Variations making whole H1, H2, and H3 Tags Relevancy | -0.14 | 4 | 1 | 14 % | 71 % |
| 131 | Ahrefs Has Images Other | -0.14 | 1 | 1 | 65 % | 11 % |
| 132 | Has Meta Description Relevancy | -0.14 | 1 | 1 | 69 % | 68 % |
| 133 | Percentage of DoFollow Internal Links Authority | -0.14 | 96 | 81 | 89 % | 67 % |
| 134 | Variations in I Tags Relevancy | -0.14 | 41 | 3 | 22 % | 80 % |
| 135 | Title Has Year Other | -0.14 | 1 | 1 | 10 % | 54 % |
| 136 | Variations in Meta Twitter Description Relevancy | -0.14 | 20 | 1 | 27 % | 73 % |
| 137 | Number of Nofollow Links Authority | -0.14 | 168 | 7 | 36 % | 78 % |
| 138 | Variations in H4-H6 Tags Relevancy | -0.14 | 16 | 2 | 22 % | 79 % |
| 139 | Variations in Meta Twitter Content Relevancy | -0.14 | 3 | 1 | 30 % | 70 % |
| 140 | Has Meta Viewport Technology | -0.14 | 1 | 1 | 88 % | 52 % |
| 141 | Search Result Link Text Has Year Other | -0.14 | 1 | 1 | 10 % | 53 % |
| 142 | Exact Matches making whole H1-H6 Tags Relevancy | -0.14 | 5 | 1 | 8 % | 50 % |
| 143 | Number of Twitter Accounts Authority | -0.14 | 11 | 1 | 45 % | 67 % |
| 144 | Number of Includes Technology | -0.14 | 99 | 22 | 90 % | 61 % |
| 145 | Number of NoFollow External Links Authority | -0.14 | 55 | 4 | 25 % | 77 % |
| 146 | Title Word Count Size | -0.14 | 18 | 9 | 92 % | 58 % |
| 147 | Has Contact Page Trust | -0.14 | 1 | 1 | 67 % | 60 % |
| 148 | Has Privacy Policy Trust | -0.14 | 1 | 1 | 59 % | 70 % |
| 149 | Number of CSS Includes Technology | -0.13 | 53 | 8 | 86 % | 59 % |
| 150 | Search Result Publish Date | -0.13 | 2008288673 | 1938488888 | 93 % | 41 % |
| 151 | Search Result Uses HTTPS Other | -0.13 | 1 | 1 | 83 % | 72 % |
| 152 | Variations in H4 Tags Relevancy | -0.13 | 15 | 1 | 18 % | 78 % |
| 153 | Percentage of NoFollow Links Authority | -0.13 | 22 | 5 | 35 % | 72 % |
| 154 | Number of JavaScript Includes Technology | -0.13 | 71 | 15 | 88 % | 62 % |
| 155 | Exact Matches making whole H1, H2, and H3 Tags Relevancy | -0.13 | 4 | 1 | 8 % | 50 % |
| 156 | Has FavIcon Technology | -0.13 | 1 | 1 | 72 % | 66 % |
| 157 | Variations in ID Attributes Relevancy | -0.13 | 20 | 1 | 12 % | 71 % |
| 158 | Ahrefs EDU Backlinks Authority | -0.13 | 4939 | 47 | 8 % | 13 % |
| 159 | Variations in OpenGraph Site Name Relevancy | -0.13 | 2 | 1 | 14 % | 60 % |
| 160 | Variations in Search Result URL Host Name Relevancy | -0.13 | 2 | 1 | 7 % | 45 % |
| 161 | Number of HTML Comments Size | -0.13 | 177 | 34 | 85 % | 69 % |
| 162 | Has DocType Tag Technology | -0.13 | 1 | 1 | 83 % | 59 % |
| 163 | Variations making whole H1 Tags Relevancy | -0.13 | 1 | 1 | 10 % | 68 % |
| 164 | Variations in Search Result URL Domain Name Relevancy | -0.13 | 2 | 1 | 7 % | 45 % |
| 165 | Title Length Size | -0.13 | 106 | 57 | 91 % | 56 % |
| 166 | Search Result Summary Length Size | -0.13 | 570 | 272 | 95 % | 62 % |
| 167 | Variations in Main Tags Relevancy | -0.13 | 465 | 33 | 23 % | 77 % |
| 168 | Has JSON-LD Schema Markup Relevancy | -0.13 | 1 | 1 | 25 % | 59 % |
| 169 | Has JSON-LD ImageObject | -0.13 | 1 | 1 | 20 % | 51 % |
| 170 | Exact Matches making whole H1 Tags Relevancy | -0.13 | 1 | 1 | 7 % | 46 % |
| 171 | Number of Facebook Accounts Authority | -0.13 | 8 | 1 | 34 % | 68 % |
| 172 | Has JSON-LD Website | -0.13 | 1 | 1 | 22 % | 49 % |
| 173 | Has Terms of Service Trust | -0.13 | 1 | 1 | 42 % | 67 % |
| 174 | Ahrefs Has EDU Backlinks Authority | -0.13 | 1 | 1 | 8 % | 12 % |
| 175 | Number of Forms Technology | -0.13 | 30 | 3 | 68 % | 68 % |
| 176 | Percentage of NoFollow External Links Authority | -0.13 | 18 | 3 | 23 % | 72 % |
| 177 | Exact Matches making whole A Tags Relevancy | -0.13 | 4 | 1 | 9 % | 46 % |
| 178 | Has Copyright Trust | -0.13 | 1 | 1 | 75 % | 61 % |
| 179 | Ahrefs Redirects Authority | -0.13 | 274 | 3 | 10 % | 16 % |
| 180 | Search Result Has Schema Other | -0.13 | 1 | 1 | 8 % | 51 % |
| 181 | Has Apple Touch Icon Technology | -0.13 | 1 | 1 | 38 % | 61 % |
| 182 | Number of Images without ALT Text Size | -0.13 | 60 | 11 | 72 % | 74 % |
| 183 | Exact Matches in H3 Tags Relevancy | -0.13 | 4 | 1 | 8 % | 50 % |
| 184 | Variations in Label Tags Relevancy | -0.13 | 34 | 1 | 6 % | 63 % |
| 185 | Number of H4 Tags Size | -0.13 | 38 | 4 | 45 % | 74 % |
| 186 | Variations in Value Attributes Relevancy | -0.13 | 252 | 2 | 15 % | 71 % |
| 187 | Number of YouTube Accounts Technology | -0.13 | 2 | 1 | 14 % | 63 % |
| 188 | Number of HREF Lang Tags Size | -0.13 | 34 | 2 | 9 % | 68 % |
| 189 | Has US Phone Number Trust | -0.13 | 1 | 1 | 41 % | 58 % |
| 190 | Search Result Has Rating Other | -0.13 | 1 | 1 | 8 % | 47 % |
| 191 | Percentage of DoFollow Links Authority | -0.13 | 100 | 94 | 90 % | 64 % |
| 192 | Inline CSS Kilobytes Size | -0.13 | 461 | 28 | 50 % | 73 % |
| 193 | Has Meta Twitter Card Authority | -0.13 | 1 | 1 | 37 % | 55 % |
| 194 | Number of Ads Technology | -0.13 | 13 | 1 | 11 % | 43 % |
| 195 | Variations Making Whole Strong Tags Relevancy | -0.13 | 12 | 1 | 7 % | 67 % |
| 196 | Has OpenGraph Type Relevancy | -0.13 | 1 | 1 | 51 % | 58 % |
| 197 | Has Meta Twitter Description Authority | -0.13 | 1 | 1 | 32 % | 60 % |
| 198 | Has JSON-LD Organization | -0.13 | 1 | 1 | 26 % | 53 % |
| 199 | Number of Amazon Ads Technology | -0.13 | 13 | 1 | 11 % | 42 % |
| 200 | Has OpenGraph Image Relevancy | -0.13 | 1 | 1 | 44 % | 62 % |