[ 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 ) Trust ( 15 ) Diversity ( 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 | -0.32 | 200 | 109 | 94 % | 83 % |
| 2 | Ahrefs Rank Authority | -0.27 | 46 | 17 | 94 % | 12 % |
| 3 | Variations in HTML Tags Relevancy | -0.26 | 1763 | 225 | 87 % | 90 % |
| 4 | Term Frequency Relevancy | -0.26 | 8 | 6 | 87 % | 88 % |
| 5 | Variations in Body Tags Relevancy | -0.25 | 1545 | 186 | 84 % | 90 % |
| 6 | Variations in Sentences Relevancy | -0.25 | 432 | 57 | 85 % | 89 % |
| 7 | Ahrefs Referring Class C Addresses Authority | -0.25 | 1726 | 46 | 56 % | 18 % |
| 8 | Ahrefs Referring IP Addresses Authority | -0.25 | 2803 | 66 | 56 % | 18 % |
| 9 | Ahrefs Referring Domains Authority | -0.24 | 16556 | 185 | 56 % | 18 % |
| 10 | Variations in Div Tags Relevancy | -0.24 | 944 | 124 | 84 % | 84 % |
| 11 | Ahrefs Text Backlinks Authority | -0.23 | 2403449 | 15434 | 56 % | 18 % |
| 12 | Ahrefs Backlinks Authority | -0.23 | 2403474 | 15509 | 57 % | 18 % |
| 13 | Ahrefs Referring Pages Authority | -0.23 | 2403469 | 15532 | 57 % | 18 % |
| 14 | Variations in A Tag HREF Attributes Relevancy | -0.23 | 749 | 55 | 77 % | 86 % |
| 15 | Ahrefs NoFollow Backlinks Authority | -0.23 | 103227 | 717 | 46 % | 19 % |
| 16 | Variations in H1-H6 Tags Relevancy | -0.23 | 68 | 8 | 79 % | 88 % |
| 17 | Variations in A Tags Relevancy | -0.23 | 241 | 29 | 79 % | 87 % |
| 18 | Variations in P Tags Relevancy | -0.22 | 236 | 31 | 77 % | 88 % |
| 19 | Variations in H1, H2, and H3 Tags Relevancy | -0.22 | 60 | 7 | 78 % | 88 % |
| 20 | Search Result Number of Site Links Other | -0.22 | 2 | 1 | 2 % | 52 % |
| 21 | Ahrefs Dofollow Backlinks Authority | -0.22 | 2300222 | 14946 | 49 % | 18 % |
| 22 | Variations in Absolute URLs Relevancy | -0.21 | 537 | 64 | 76 % | 88 % |
| 23 | Keywords in pages top 10 most used phrases | -0.21 | 6 | 2 | 69 % | 83 % |
| 24 | Variations in LI Tags Relevancy | -0.21 | 238 | 21 | 77 % | 87 % |
| 25 | Variations in H1 and H2 Tags Relevancy | -0.21 | 28 | 4 | 75 % | 87 % |
| 26 | Ahrefs Has Text Backlinks Authority | -0.21 | 1 | 1 | 55 % | 18 % |
| 27 | Variations in Search Result Link Text Relevancy | -0.21 | 5 | 2 | 87 % | 78 % |
| 28 | Variations in First 100 Words Relevancy | -0.21 | 30 | 8 | 70 % | 76 % |
| 29 | Variations in Search Result Display URL Relevancy | -0.21 | 5 | 2 | 87 % | 78 % |
| 30 | Ahrefs Has Backlinks Authority | -0.2 | 1 | 1 | 56 % | 18 % |
| 31 | TF/IDF Relevancy | -0.2 | 1 | 1 | 72 % | 76 % |
| 32 | Ahrefs Has Dofollow Backlinks Authority | -0.2 | 1 | 1 | 48 % | 17 % |
| 33 | Variations in Search Result URL Path Relevancy | -0.2 | 5 | 2 | 63 % | 70 % |
| 34 | Variations in Search Result URL Relevancy | -0.2 | 5 | 2 | 66 % | 71 % |
| 35 | Ahrefs Has NoFollow Backlinks Authority | -0.2 | 1 | 1 | 46 % | 18 % |
| 36 | Variations in the Title Tag Relevancy | -0.2 | 5 | 2 | 82 % | 75 % |
| 37 | Clean Text Kilobytes Size | -0.2 | 50 | 11 | 87 % | 79 % |
| 38 | Keywords in pages top 5 most used phrases | -0.2 | 4 | 2 | 59 % | 82 % |
| 39 | Exact Matches in the HTML Tag Relevancy | -0.2 | 369 | 12 | 38 % | 80 % |
| 40 | Exact Matches in Body Tag Relevancy | -0.2 | 333 | 15 | 37 % | 81 % |
| 41 | Exact Matches in Sentences Relevancy | -0.19 | 4351 | 6 | 35 % | 79 % |
| 42 | Variations in Script Tags Relevancy | -0.19 | 598 | 41 | 62 % | 88 % |
| 43 | Number of Sentences Size | -0.19 | 373 | 66 | 90 % | 80 % |
| 44 | Leading Variations in H1-H6 Tags Relevancy | -0.19 | 29 | 2 | 51 % | 84 % |
| 45 | Word Count Size | -0.19 | 4834 | 1354 | 91 % | 79 % |
| 46 | Unabridged Word Count Size | -0.19 | 10070 | 1739 | 91 % | 78 % |
| 47 | Variations in Meta Description Relevancy | -0.19 | 11 | 2 | 61 % | 83 % |
| 48 | Variations in the Canonical URL Relevancy | -0.19 | 5 | 2 | 52 % | 74 % |
| 49 | Leading Variations in H1, H2, and H3 Tags Relevancy | -0.19 | 28 | 2 | 48 % | 83 % |
| 50 | Ahrefs Word Count Size | -0.19 | 4044 | 1304 | 68 % | 11 % |
| 51 | Keywords in pages top 3 most used phrases | -0.18 | 3 | 1 | 51 % | 79 % |
| 52 | Variations in Search Result Document File Name Relevancy | -0.18 | 5 | 2 | 58 % | 69 % |
| 53 | Number of P Tags Size | -0.18 | 151 | 36 | 87 % | 76 % |
| 54 | Variations in Span Tags Relevancy | -0.18 | 194 | 10 | 59 % | 85 % |
| 55 | Variations in H2 Tags Relevancy | -0.18 | 22 | 3 | 46 % | 86 % |
| 56 | Variations in H1 Tags Relevancy | -0.18 | 13 | 2 | 67 % | 78 % |
| 57 | Exact Matches in H1-H6 Tags Relevancy | -0.18 | 375 | 2 | 27 % | 74 % |
| 58 | Number of HTTPS Links Authority | -0.18 | 561 | 137 | 87 % | 78 % |
| 59 | Number of HTML Tags Size | -0.18 | 3334 | 964 | 94 % | 74 % |
| 60 | Number of Heading Tags Size | -0.17 | 179 | 21 | 89 % | 76 % |
| 61 | Variations in ALT Attributes Relevancy | -0.17 | 250 | 7 | 48 % | 86 % |
| 62 | Variations in the last 100 words Relevancy | -0.17 | 22 | 5 | 59 % | 74 % |
| 63 | Body Tag Size Kilobytes Size | -0.17 | 642 | 111 | 89 % | 81 % |
| 64 | Ahrefs Image Backlinks | -0.17 | 471657 | 3208 | 21 % | 16 % |
| 65 | Variations in H3 Tags Relevancy | -0.17 | 37 | 3 | 35 % | 85 % |
| 66 | Ahrefs Has Image Backlinks Authority | -0.17 | 1 | 1 | 22 % | 15 % |
| 67 | Page Size Kilobytes Size | -0.17 | 830 | 159 | 93 % | 79 % |
| 68 | Number of Links Authority | -0.17 | 568 | 155 | 91 % | 74 % |
| 69 | Ahrefs Internal Links Authority | -0.16 | 260 | 72 | 67 % | 17 % |
| 70 | Number of DoFollow Links Authority | -0.16 | 548 | 148 | 91 % | 73 % |
| 71 | Variations in OpenGraph Title Relevancy | -0.16 | 4 | 1 | 50 % | 72 % |
| 72 | Number of Absolute URLs Authority | -0.16 | 687 | 190 | 92 % | 76 % |
| 73 | Variations in OpenGraph Description Relevancy | -0.16 | 9 | 2 | 44 % | 76 % |
| 74 | Ahrefs External Links Authority | -0.16 | 129 | 17 | 63 % | 18 % |
| 75 | Number of Internal Links Authority | -0.16 | 539 | 136 | 90 % | 74 % |
| 76 | Number of Images Size | -0.16 | 129 | 29 | 89 % | 77 % |
| 77 | Leading Variations in Title Tag Relevancy | -0.16 | 1 | 1 | 37 % | 73 % |
| 78 | Ahrefs Linked Root Domains Authority | -0.16 | 25 | 7 | 68 % | 18 % |
| 79 | Inline JavaScript Kilobytes Size | -0.16 | 640 | 43 | 87 % | 77 % |
| 80 | Variations in Nav Tags Relevancy | -0.16 | 342 | 17 | 42 % | 75 % |
| 81 | Number of External Links Authority | -0.16 | 213 | 20 | 86 % | 75 % |
| 82 | Variations making whole A Tags Relevancy | -0.16 | 25 | 2 | 36 % | 75 % |
| 83 | Leading Variations in H1 Tags Relevancy | -0.16 | 3 | 1 | 32 % | 73 % |
| 84 | Title Has Sentiment Words Other | -0.16 | 1 | 1 | 20 % | 66 % |
| 85 | Number of Images with ALT Text Size | -0.16 | 107 | 17 | 82 % | 78 % |
| 86 | Number of H3 Tags Size | -0.16 | 138 | 8 | 67 % | 74 % |
| 87 | Variations in Summary Tags Relevancy | -0.16 | 246 | 16 | 46 % | 75 % |
| 88 | Exact Matches in Title Tag Relevancy | -0.16 | 87 | 1 | 25 % | 67 % |
| 89 | Title Has Best Other | -0.16 | 1 | 1 | 16 % | 59 % |
| 90 | Exact Matches in A Tags Relevancy | -0.16 | 3722 | 4 | 25 % | 71 % |
| 91 | Ahrefs Pages Size | -0.15 | 5 | 2 | 70 % | 17 % |
| 92 | Average Words Per Sentence Size | -0.15 | 229 | 36 | 87 % | 62 % |
| 93 | Title Has Sales Words Other | -0.15 | 1 | 1 | 19 % | 64 % |
| 94 | Variations Making Whole LI Tags Relevancy | -0.15 | 14 | 1 | 27 % | 71 % |
| 95 | Exact Matches in H1 Tags Relevancy | -0.15 | 2 | 1 | 20 % | 64 % |
| 96 | Variations Making Whole Span Tags Relevancy | -0.15 | 179 | 2 | 22 % | 77 % |
| 97 | Exact Matches in H2 Tags Relevancy | -0.15 | 141 | 1 | 13 % | 62 % |
| 98 | Leading Variations in H2 Tags Relevancy | -0.15 | 6 | 1 | 22 % | 79 % |
| 99 | Flesch Kincaid Reading Grade Level Other | -0.15 | 94 | 17 | 90 % | 60 % |
| 100 | Variations in Article Tags Relevancy | -0.15 | 241 | 20 | 31 % | 72 % |
| 101 | Number of H2 Tags Size | -0.15 | 33 | 6 | 72 % | 74 % |
| 102 | Variations in Footer Tags Relevancy | -0.15 | 62 | 6 | 34 % | 75 % |
| 103 | Head Size Kilobytes Size | -0.15 | 357 | 45 | 91 % | 75 % |
| 104 | Number of Email Addresses Trust | -0.15 | 486 | 4 | 36 % | 67 % |
| 105 | Ahrefs Has External Links Authority | -0.15 | 1 | 1 | 61 % | 16 % |
| 106 | Ahrefs Has Internal Links Authority | -0.15 | 1 | 1 | 66 % | 15 % |
| 107 | Ahrefs Has Linked Root Domains Authority | -0.15 | 1 | 1 | 67 % | 15 % |
| 108 | Variations in Class Attributes Relevancy | -0.15 | 231 | 8 | 27 % | 76 % |
| 109 | Variations in Strong Tags Relevancy | -0.15 | 47 | 3 | 31 % | 79 % |
| 110 | Load Time Milliseconds Performance | -0.15 | 183737 | 4242 | 95 % | 67 % |
| 111 | Number of DoFollow External Links Authority | -0.15 | 210 | 17 | 84 % | 72 % |
| 112 | Keywords in pages most used phrase | -0.15 | 2 | 1 | 26 % | 70 % |
| 113 | Exact Matches in Meta Description Relevancy | -0.15 | 141 | 1 | 17 % | 62 % |
| 114 | Variations in Meta Twitter Description Relevancy | -0.15 | 8 | 1 | 28 % | 72 % |
| 115 | Variations in TITLE Attributes Relevancy | -0.15 | 147 | 7 | 44 % | 81 % |
| 116 | Number of Social Accounts Authority | -0.15 | 30 | 3 | 56 % | 68 % |
| 117 | Has Email Trust | -0.15 | 1 | 1 | 36 % | 56 % |
| 118 | Flesch Kincaid Reading Ease | -0.14 | 207 | 69 | 91 % | 67 % |
| 119 | Variations in Search Result Summary Relevancy | -0.14 | 9 | 3 | 90 % | 70 % |
| 120 | Variations in Meta Twitter Content Relevancy | -0.14 | 3 | 1 | 31 % | 69 % |
| 121 | Number of Social Pages Authority | -0.14 | 47 | 2 | 49 % | 70 % |
| 122 | Number of US Phone Numbers Trust | -0.14 | 231 | 8 | 41 % | 72 % |
| 123 | Variations making whole H1-H6 Tags Relevancy | -0.14 | 24 | 1 | 16 % | 71 % |
| 124 | Search Result Uses HTTPS Other | -0.14 | 1 | 1 | 81 % | 70 % |
| 125 | Number of NoFollow External Links Authority | -0.14 | 87 | 4 | 26 % | 76 % |
| 126 | Meta Description Length Size | -0.14 | 733 | 127 | 70 % | 73 % |
| 127 | Word Count in Meta Description Size | -0.14 | 106 | 21 | 70 % | 76 % |
| 128 | Has Canonical URL Authority | -0.14 | 1 | 1 | 69 % | 67 % |
| 129 | Title Has Year Other | -0.14 | 1 | 1 | 11 % | 58 % |
| 130 | Variations in I Tags Relevancy | -0.14 | 34 | 3 | 23 % | 79 % |
| 131 | Number of Nofollow Links Authority | -0.14 | 93 | 8 | 39 % | 75 % |
| 132 | Variations in Section Tags Relevancy | -0.14 | 168 | 14 | 33 % | 79 % |
| 133 | Variations in H4-H6 Tags Relevancy | -0.14 | 31 | 2 | 22 % | 79 % |
| 134 | Search Result Link Text Has Year Other | -0.14 | 1 | 1 | 10 % | 52 % |
| 135 | Has Privacy Policy Trust | -0.14 | 1 | 1 | 61 % | 70 % |
| 136 | Variations making whole H1, H2, and H3 Tags Relevancy | -0.14 | 24 | 1 | 15 % | 69 % |
| 137 | Has FavIcon Technology | -0.14 | 1 | 1 | 68 % | 62 % |
| 138 | Number of Twitter Accounts Authority | -0.14 | 18 | 1 | 47 % | 68 % |
| 139 | Variations in H4 Tags Relevancy | -0.14 | 30 | 1 | 17 % | 78 % |
| 140 | Percentage of DoFollow Internal Links Authority | -0.13 | 94 | 80 | 89 % | 63 % |
| 141 | Ahrefs Redirects Authority | -0.13 | 133 | 3 | 11 % | 15 % |
| 142 | Percentage of DoFollow Links Authority | -0.13 | 100 | 93 | 90 % | 62 % |
| 143 | Leading Variations in H3 Tags Relevancy | -0.13 | 25 | 1 | 16 % | 78 % |
| 144 | Number of Includes Technology | -0.13 | 89 | 22 | 90 % | 58 % |
| 145 | Percentage of DoFollow External Links Authority | -0.13 | 46 | 14 | 82 % | 59 % |
| 146 | Variations in ID Attributes Relevancy | -0.13 | 25 | 2 | 13 % | 73 % |
| 147 | Has Meta Description Relevancy | -0.13 | 1 | 1 | 70 % | 67 % |
| 148 | Search Result Summary Length Size | -0.13 | 604 | 270 | 94 % | 66 % |
| 149 | Number of H4 Tags Size | -0.13 | 32 | 5 | 46 % | 72 % |
| 150 | Number of Ads Technology | -0.13 | 15 | 1 | 13 % | 48 % |
| 151 | Has OpenGraph Image Relevancy | -0.13 | 1 | 1 | 45 % | 61 % |
| 152 | Number of CSS Includes Technology | -0.13 | 40 | 8 | 86 % | 58 % |
| 153 | Has Contact Page Trust | -0.13 | 1 | 1 | 66 % | 60 % |
| 154 | Inline CSS Kilobytes Size | -0.13 | 342 | 33 | 52 % | 75 % |
| 155 | Variations in Host Citations Relevancy | -0.13 | 245 | 9 | 13 % | 60 % |
| 156 | Has JSON-LD Website | -0.13 | 1 | 1 | 21 % | 39 % |
| 157 | Percentage of NoFollow External Links Authority | -0.13 | 18 | 3 | 25 % | 71 % |
| 158 | Has JSON-LD ImageObject | -0.13 | 1 | 1 | 19 % | 43 % |
| 159 | Has Ads Other | -0.13 | 1 | 1 | 13 % | 44 % |
| 160 | Percentage of NoFollow Links Authority | -0.13 | 22 | 5 | 37 % | 69 % |
| 161 | Variations in Label Tags Relevancy | -0.13 | 22 | 1 | 6 % | 65 % |
| 162 | Number of Amazon Ads Technology | -0.13 | 15 | 1 | 13 % | 48 % |
| 163 | Search Result Has Schema Other | -0.13 | 1 | 1 | 9 % | 56 % |
| 164 | Number of YouTube Accounts Technology | -0.13 | 5 | 1 | 15 % | 64 % |
| 165 | Variations making whole H1 Tags Relevancy | -0.13 | 2 | 1 | 10 % | 64 % |
| 166 | Number of JavaScript Includes Technology | -0.13 | 57 | 15 | 88 % | 60 % |
| 167 | Has JSON-LD Organization | -0.13 | 1 | 1 | 28 % | 42 % |
| 168 | Number of Images without ALT Text Size | -0.13 | 99 | 12 | 73 % | 73 % |
| 169 | Search Result Publish Date | -0.13 | 2009815248 | 1981505063 | 95 % | 44 % |
| 170 | Number of Facebook Accounts Authority | -0.13 | 12 | 1 | 36 % | 68 % |
| 171 | Has Amazon Ads Other | -0.13 | 1 | 1 | 13 % | 44 % |
| 172 | Title Word Count Size | -0.13 | 22 | 9 | 92 % | 59 % |
| 173 | Ahrefs EDU Backlinks Authority | -0.13 | 41419 | 731 | 8 % | 12 % |
| 174 | Variations in Main Tags Relevancy | -0.13 | 331 | 35 | 23 % | 71 % |
| 175 | Aggressive Variation Density Relevancy | -0.13 | 8 | 1 | 10 % | 65 % |
| 176 | Has Terms of Service Trust | -0.13 | 1 | 1 | 43 % | 65 % |
| 177 | Has Meta Twitter Description Authority | -0.13 | 1 | 1 | 33 % | 59 % |
| 178 | Ahrefs Has EDU Backlinks Authority | -0.13 | 1 | 1 | 8 % | 11 % |
| 179 | Is OpenGraph Type Article Technology | -0.13 | 1 | 1 | 33 % | 55 % |
| 180 | Number of Forms Technology | -0.13 | 22 | 3 | 70 % | 66 % |
| 181 | Has JSON-LD Article | -0.13 | 1 | 1 | 10 % | 38 % |
| 182 | Search Result Has Rating Other | -0.13 | 1 | 1 | 8 % | 53 % |
| 183 | Has JSON-LD Search Action | -0.13 | 1 | 1 | 19 % | 40 % |
| 184 | Variations in HTML Comment Tags Relevancy | -0.13 | 660 | 5 | 12 % | 70 % |
| 185 | Has Meta Twitter Title Authority | -0.13 | 1 | 1 | 34 % | 58 % |
| 186 | Variations in Meta Keywords Relevancy | -0.13 | 96 | 2 | 19 % | 67 % |
| 187 | Variations in OpenGraph Site Name Relevancy | -0.13 | 2 | 1 | 14 % | 59 % |
| 188 | Has MicroData Rating Value | -0.13 | 1 | 1 | 6 % | 52 % |
| 189 | Number of HTML Comments Size | -0.13 | 291 | 35 | 85 % | 65 % |
| 190 | Has JSON-LD WebPage | -0.13 | 1 | 1 | 18 % | 43 % |
| 191 | Variations in Value Attributes Relevancy | -0.13 | 82 | 2 | 15 % | 70 % |
| 192 | Has JSON-LD Schema Markup Relevancy | -0.13 | 1 | 1 | 26 % | 43 % |
| 193 | Exact Matches in H3 Tags Relevancy | -0.13 | 97 | 1 | 9 % | 50 % |
| 194 | Title Has Top Other | -0.12 | 1 | 1 | 5 % | 43 % |
| 195 | Has OpenGraph Type Relevancy | -0.12 | 1 | 1 | 53 % | 59 % |
| 196 | Has US Phone Number Trust | -0.12 | 1 | 1 | 41 % | 58 % |
| 197 | Ahrefs Has Redirects Authority | -0.12 | 1 | 1 | 11 % | 14 % |
| 198 | Has MicroData Aggregate Rating | -0.12 | 1 | 1 | 5 % | 49 % |
| 199 | Has Copyright Trust | -0.12 | 1 | 1 | 76 % | 60 % |
| 200 | Title Length Size | -0.12 | 124 | 59 | 91 % | 54 % |