Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Body Tag Size Kilobytes Size | -0.22 | 314 | 91 | 81 % | 94 % |
| 2 | Page Size Kilobytes Size | -0.21 | 545 | 162 | 96 % | 89 % |
| 3 | Number of HTML Tags Size | -0.19 | 2384 | 920 | 96 % | 89 % |
| 4 | Unabridged Word Count Size | -0.19 | 6134 | 1899 | 95 % | 88 % |
| 5 | Clean Text Kilobytes Size | -0.18 | 37 | 12 | 91 % | 89 % |
| 6 | Word Count Size | -0.18 | 4929 | 1468 | 95 % | 88 % |
| 7 | Number of Sentences Size | -0.18 | 255 | 66 | 92 % | 88 % |
| 8 | Ahrefs Word Count Size | -0.17 | 3789 | 1557 | 71 % | 13 % |
| 9 | Number of P Tags Size | -0.17 | 145 | 40 | 89 % | 85 % |
| 10 | Number of Questions Size | -0.16 | 103 | 8 | 68 % | 85 % |
| 11 | Number of Heading Tags Size | -0.16 | 73 | 22 | 91 % | 88 % |
| 12 | Inline JavaScript Kilobytes Size | -0.16 | 170 | 36 | 90 % | 83 % |
| 13 | Number of Images with ALT Text Size | -0.16 | 211 | 20 | 84 % | 85 % |
| 14 | Number of Images Size | -0.16 | 221 | 30 | 90 % | 85 % |
| 15 | Ahrefs Pages Size | -0.15 | 7 | 2 | 72 % | 23 % |
| 16 | Number of H2 Tags Size | -0.15 | 36 | 7 | 78 % | 87 % |
| 17 | Number of Questions In Headings Size | -0.15 | 7 | 2 | 38 % | 36 % |
| 18 | Number of H3 Tags Size | -0.15 | 23 | 8 | 69 % | 85 % |
| 19 | Ahrefs Page Size Size | -0.14 | 74508 | 36566 | 73 % | 13 % |
| 20 | Head Size Kilobytes Size | -0.14 | 140 | 47 | 91 % | 78 % |
| 21 | Number of Prices Size | -0.14 | 323 | 39 | 72 % | 79 % |
| 22 | Inline CSS Kilobytes Size | -0.14 | 239 | 34 | 65 % | 79 % |
| 23 | Number of Questions In H2 Tags Size | -0.14 | 6 | 1 | 24 % | 78 % |
| 24 | Number of Questions In H3 Tags Size | -0.13 | 5 | 1 | 18 % | 80 % |
| 25 | Number of Schema Products Size | -0.12 | 19 | 1 | 5 % | 35 % |
| 26 | Number of H4 Tags Size | -0.12 | 30 | 4 | 43 % | 76 % |
| 27 | Number of HTML Comments Size | -0.12 | 294 | 31 | 75 % | 75 % |
| 28 | Word Count in Meta Description Size | -0.12 | 86 | 22 | 71 % | 70 % |
| 29 | Bytes To First P Tag Size | -0.12 | 81673 | 55794 | 97 % | 66 % |
| 30 | Search Result Summary Length Size | -0.12 | 303 | 146 | 96 % | 56 % |
| 31 | Meta Description Length Size | -0.12 | 511 | 128 | 71 % | 69 % |
| 32 | Number of HREF Lang Tags Size | -0.12 | 15 | 2 | 12 % | 74 % |
| 33 | Number of Images without ALT Text Size | -0.11 | 62 | 10 | 67 % | 75 % |
| 34 | Search Result URL Length Size | -0.11 | 99 | 63 | 97 % | 41 % |
| 35 | Title Word Count Size | -0.11 | 20 | 10 | 93 % | 57 % |
| 36 | Title Length Size | -0.11 | 107 | 58 | 93 % | 54 % |
| 37 | Number of H5 Tags Size | -0.11 | 10 | 2 | 19 % | 73 % |
| 38 | Number of Questions In H4 Tags Size | -0.11 | 2 | 1 | 6 % | 65 % |
| 39 | Search Result Link Text Length Size | -0.1 | 58 | 50 | 96 % | 54 % |
| 40 | Average Words Per Sentence Size | -0.1 | 157 | 36 | 93 % | 61 % |
| 41 | Number of Bytes to First Match Size | -0.1 | 9972129 | 632766 | 95 % | 61 % |
| 42 | Search Result Host Length Size | -0.1 | 26 | 19 | 96 % | 47 % |
| 43 | Search Result Domain Length Size | -0.1 | 26 | 18 | 96 % | 47 % |
| 44 | Number of Questions In H6 Tags Size | -0.1 | 1 | 1 | 1 % | 32 % |
| 45 | Number of H1 Tags Size | -0.1 | 7 | 2 | 84 % | 64 % |
| 46 | Number of Questions In H1 Tags Size | -0.1 | 1 | 1 | 9 % | 49 % |
| 47 | Number of Questions In H5 Tags Size | -0.09 | 2 | 1 | 3 % | 47 % |
| 48 | Number of H6 Tags Size | -0.09 | 7 | 1 | 9 % | 66 % |
| 49 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 98 % |
