| Keyword | CPC | PCC | Volume | Score |
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| free books to download pdf | 1.65 | 1 | 9858 | 14 |
| free ebooks to download pdf | 1.23 | 0.6 | 2506 | 24 |
| free books to download free | 1.43 | 0.7 | 6745 | 64 |
| free books to download for kindle | 0.72 | 0.2 | 588 | 13 |
| free books to download for kindle fire in uk | 0.44 | 0.5 | 250 | 64 |
| free books to download for kindle fire | 0.86 | 0.6 | 6115 | 15 |
| free books to download for kids | 0.24 | 0.4 | 7423 | 1 |
| free books to download for kindle romance | 1.37 | 0.2 | 1125 | 20 |
| free books to download for kobo | 1.67 | 0.2 | 5230 | 25 |
| free books to download for iphone | 1.91 | 0.1 | 8344 | 78 |
| free books to download for kindle kids | 1.01 | 0.1 | 5948 | 100 |
| pdf drive books free download | 0.77 | 0.1 | 1693 | 88 |
| pdfdrive.com books free download | 1.91 | 0.9 | 7950 | 45 |
| pdf drive books free download pdf | 1.67 | 0.5 | 3706 | 60 |
| pdfdrive.net books free download | 1.54 | 0.6 | 2267 | 91 |
