Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Clean Text Kilobytes Size | -0.22 | 42 | 11 | 88 % | 80 % |
| 2 | Word Count Size | -0.22 | 5860 | 1462 | 93 % | 81 % |
| 3 | Unabridged Word Count Size | -0.22 | 7764 | 1820 | 93 % | 80 % |
| 4 | Number of Sentences Size | -0.21 | 412 | 71 | 92 % | 82 % |
| 5 | Number of HTML Tags Size | -0.2 | 3260 | 993 | 95 % | 82 % |
| 6 | Ahrefs Word Count Size | -0.19 | 3397 | 1385 | 70 % | 16 % |
| 7 | Number of P Tags Size | -0.19 | 356 | 39 | 89 % | 82 % |
| 8 | Number of Heading Tags Size | -0.18 | 58 | 22 | 91 % | 82 % |
| 9 | Body Tag Size Kilobytes Size | -0.18 | 457 | 112 | 91 % | 82 % |
| 10 | Page Size Kilobytes Size | -0.17 | 498 | 160 | 95 % | 83 % |
| 11 | Ahrefs Page Size Size | -0.17 | 49439 | 25345 | 71 % | 14 % |
| 12 | Number of Images Size | -0.17 | 152 | 31 | 91 % | 82 % |
| 13 | Number of Images with ALT Text Size | -0.17 | 128 | 19 | 85 % | 82 % |
| 14 | Ahrefs Pages Size | -0.16 | 5 | 2 | 71 % | 15 % |
| 15 | Inline JavaScript Kilobytes Size | -0.16 | 294 | 41 | 90 % | 79 % |
| 16 | Average Words Per Sentence Size | -0.16 | 155 | 37 | 87 % | 65 % |
| 17 | Number of H3 Tags Size | -0.16 | 35 | 8 | 69 % | 80 % |
| 18 | Number of H2 Tags Size | -0.16 | 19 | 7 | 73 % | 82 % |
| 19 | Head Size Kilobytes Size | -0.14 | 290 | 44 | 93 % | 78 % |
| 20 | Word Count in Meta Description Size | -0.14 | 76 | 22 | 71 % | 77 % |
| 21 | Meta Description Length Size | -0.14 | 497 | 132 | 71 % | 77 % |
| 22 | Search Result Link Text Length Size | -0.14 | 89 | 78 | 95 % | 64 % |
| 23 | Number of H4 Tags Size | -0.14 | 49 | 5 | 47 % | 77 % |
| 24 | Number of HREF Lang Tags Size | -0.13 | 14 | 2 | 10 % | 71 % |
| 25 | Number of Images without ALT Text Size | -0.13 | 57 | 12 | 74 % | 75 % |
| 26 | Inline CSS Kilobytes Size | -0.13 | 206 | 31 | 53 % | 73 % |
| 27 | Search Result Summary Length Size | -0.12 | 1162 | 280 | 95 % | 65 % |
| 28 | Number of HTML Comments Size | -0.12 | 559 | 37 | 86 % | 67 % |
| 29 | Title Word Count Size | -0.12 | 53 | 9 | 94 % | 58 % |
| 30 | Title Length Size | -0.12 | 320 | 59 | 93 % | 55 % |
| 31 | Search Result URL Length Size | -0.12 | 128 | 62 | 95 % | 45 % |
| 32 | Number of H5 Tags Size | -0.11 | 18 | 2 | 20 % | 70 % |
| 33 | Search Result Domain Length Size | -0.1 | 26 | 19 | 94 % | 52 % |
| 34 | Search Result Host Length Size | -0.1 | 26 | 19 | 94 % | 51 % |
| 35 | Number of Bytes to First Match Size | -0.1 | 3201006 | 198856 | 96 % | 65 % |
| 36 | Number of H1 Tags Size | -0.1 | 7 | 2 | 84 % | 66 % |
| 37 | Number of H6 Tags Size | -0.1 | 12 | 1 | 10 % | 64 % |
