Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Page Size Kilobytes Size | -0.24 | 705 | 169 | 93 % | 89 % |
| 2 | Number of HTML Tags Size | -0.24 | 2517 | 993 | 94 % | 87 % |
| 3 | Body Tag Size Kilobytes Size | -0.21 | 427 | 96 | 78 % | 90 % |
| 4 | Number of Sentences Size | -0.2 | 181 | 46 | 88 % | 87 % |
| 5 | Clean Text Kilobytes Size | -0.2 | 38 | 12 | 88 % | 88 % |
| 6 | Inline JavaScript Kilobytes Size | -0.2 | 302 | 41 | 88 % | 86 % |
| 7 | Unabridged Word Count Size | -0.2 | 6989 | 1902 | 92 % | 89 % |
| 8 | Number of Images with ALT Text Size | -0.19 | 64 | 20 | 81 % | 85 % |
| 9 | Word Count Size | -0.19 | 5147 | 1501 | 92 % | 88 % |
| 10 | Number of Images Size | -0.19 | 87 | 32 | 88 % | 85 % |
| 11 | Number of H2 Tags Size | -0.19 | 26 | 7 | 72 % | 86 % |
| 12 | Number of Heading Tags Size | -0.17 | 48 | 23 | 89 % | 85 % |
| 13 | Inline CSS Kilobytes Size | -0.17 | 217 | 34 | 60 % | 84 % |
| 14 | Number of Questions In H2 Tags Size | -0.17 | 3 | 1 | 19 % | 80 % |
| 15 | Head Size Kilobytes Size | -0.17 | 163 | 42 | 86 % | 84 % |
| 16 | Number of HTML Comments Size | -0.15 | 126 | 29 | 76 % | 72 % |
| 17 | Number of P Tags Size | -0.15 | 211 | 40 | 89 % | 74 % |
| 18 | Number of Questions In Headings Size | -0.15 | 6 | 2 | 33 % | 83 % |
| 19 | Number of Questions Size | -0.15 | 27 | 5 | 62 % | 80 % |
| 20 | Number of Images without ALT Text Size | -0.15 | 111 | 13 | 70 % | 77 % |
| 21 | Average Words Per Sentence Size | -0.14 | 211 | 48 | 89 % | 69 % |
| 22 | Number of H3 Tags Size | -0.14 | 23 | 9 | 69 % | 77 % |
| 23 | Number of H5 Tags Size | -0.14 | 16 | 2 | 20 % | 76 % |
| 24 | Title Word Count Size | -0.13 | 19 | 10 | 92 % | 64 % |
| 25 | Title Length Size | -0.13 | 131 | 62 | 92 % | 61 % |
| 26 | Number of H4 Tags Size | -0.13 | 22 | 5 | 47 % | 73 % |
| 27 | Search Result Link Text Length Size | -0.13 | 87 | 54 | 94 % | 63 % |
| 28 | Ahrefs Word Count Size | -0.13 | 3708 | 1139 | 61 % | 16 % |
| 29 | Word Count in Meta Description Size | -0.13 | 65 | 24 | 68 % | 71 % |
| 30 | Search Result URL Length Size | -0.13 | 112 | 68 | 92 % | 53 % |
| 31 | Meta Description Length Size | -0.13 | 397 | 132 | 68 % | 71 % |
| 32 | Number of H1 Tags Size | -0.12 | 6 | 2 | 80 % | 71 % |
| 33 | Number of Questions In H3 Tags Size | -0.11 | 4 | 1 | 14 % | 69 % |
| 34 | Number of HREF Lang Tags Size | -0.11 | 12 | 2 | 10 % | 68 % |
| 35 | Ahrefs Pages Size | -0.1 | 7 | 2 | 65 % | 22 % |
| 36 | Ahrefs Page Size Size | -0.1 | 50160 | 23708 | 62 % | 16 % |
| 37 | Number of H6 Tags Size | -0.1 | 10 | 1 | 10 % | 59 % |
| 38 | Search Result Summary Length Size | -0.1 | 509 | 244 | 80 % | 49 % |
| 39 | Number of Bytes to First Match Size | -0.09 | 7912231 | 511762 | 95 % | 57 % |
| 40 | Number of Questions In H1 Tags Size | -0.09 | 1 | 1 | 6 % | 48 % |
| 41 | Number of Questions In H4 Tags Size | -0.09 | 3 | 1 | 6 % | 57 % |
| 42 | Number of Questions In H5 Tags Size | -0.08 | 2 | 1 | 3 % | 45 % |
| 43 | Number of Questions In H6 Tags Size | -0.07 | 3 | 1 | 1 % | 26 % |
| 44 | Search Result Domain Length Size | -0.07 | 25 | 18 | 94 % | 43 % |
| 45 | Search Result Host Length Size | -0.07 | 25 | 18 | 94 % | 43 % |
| 46 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 97 % |
