Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Unabridged Word Count Size | -0.19 | 10140 | 1738 | 94 % | 74 % |
| 2 | Word Count Size | -0.19 | 8025 | 1346 | 94 % | 80 % |
| 3 | Number of Sentences Size | -0.18 | 419 | 66 | 93 % | 80 % |
| 4 | Clean Text Kilobytes Size | -0.18 | 64 | 11 | 92 % | 81 % |
| 5 | Number of HTML Tags Size | -0.17 | 9522 | 952 | 95 % | 75 % |
| 6 | Number of P Tags Size | -0.16 | 252 | 35 | 89 % | 75 % |
| 7 | Page Size Kilobytes Size | -0.16 | 551 | 148 | 94 % | 84 % |
| 8 | Body Tag Size Kilobytes Size | -0.16 | 510 | 106 | 91 % | 84 % |
| 9 | Number of Heading Tags Size | -0.16 | 68 | 21 | 91 % | 76 % |
| 10 | Number of Images Size | -0.15 | 137 | 29 | 91 % | 81 % |
| 11 | Number of Images with ALT Text Size | -0.15 | 96 | 17 | 84 % | 82 % |
| 12 | Number of H2 Tags Size | -0.15 | 32 | 6 | 73 % | 75 % |
| 13 | Number of H3 Tags Size | -0.15 | 51 | 8 | 67 % | 75 % |
| 14 | Inline JavaScript Kilobytes Size | -0.14 | 223 | 40 | 89 % | 84 % |
| 15 | Ahrefs Pages Size | -0.14 | 1 | 1 | 67 % | 15 % |
| 16 | Search Result Link Text Length Size | -0.13 | 81 | 57 | 93 % | 67 % |
| 17 | Word Count in Meta Description Size | -0.13 | 139 | 22 | 69 % | 79 % |
| 18 | Meta Description Length Size | -0.13 | 769 | 132 | 69 % | 78 % |
| 19 | Head Size Kilobytes Size | -0.13 | 156 | 39 | 92 % | 80 % |
| 20 | Search Result Summary Length Size | -0.13 | 466 | 251 | 94 % | 67 % |
| 21 | Number of HREF Lang Tags Size | -0.13 | 37 | 2 | 9 % | 75 % |
| 22 | Title Word Count Size | -0.13 | 17 | 9 | 93 % | 61 % |
| 23 | Number of Images without ALT Text Size | -0.12 | 78 | 12 | 75 % | 73 % |
| 24 | Search Result URL Length Size | -0.12 | 93 | 62 | 94 % | 47 % |
| 25 | Title Length Size | -0.12 | 123 | 59 | 93 % | 60 % |
| 26 | Inline CSS Kilobytes Size | -0.12 | 136 | 26 | 51 % | 76 % |
| 27 | Number of H4 Tags Size | -0.12 | 21 | 4 | 46 % | 70 % |
| 28 | Average Words Per Sentence Size | -0.12 | 259 | 41 | 92 % | 64 % |
| 29 | Number of H1 Tags Size | -0.11 | 6 | 2 | 82 % | 64 % |
| 30 | Search Result Host Length Size | -0.11 | 28 | 20 | 94 % | 56 % |
| 31 | Search Result Domain Length Size | -0.11 | 28 | 20 | 94 % | 56 % |
| 32 | Number of HTML Comments Size | -0.11 | 147 | 37 | 87 % | 62 % |
| 33 | Number of H5 Tags Size | -0.1 | 19 | 2 | 19 % | 63 % |
| 34 | Number of Bytes to First Match Size | -0.1 | 3600401 | 218939 | 96 % | 62 % |
| 35 | Number of H6 Tags Size | -0.1 | 15 | 1 | 10 % | 60 % |
