Here are 20 websites that you can use to create book covers for free:

1. Canva: This user-friendly graphic design platform offers a wide range of templates and design elements that you can use to create a professional-looking book cover.
2. Adobe Spark: This online tool allows you to create stunning book covers using a variety of templates, fonts, and design elements.
3. Piktochart: This website offers a range of templates and design elements that you can use to create professional-looking book covers.
4. FotoJet: This website offers a range of templates and design elements that you can use to create book covers for free.
5. Snappa: This online design tool allows you to create book covers quickly and easily, with a range of templates and design elements to choose from.
6. Canva for Education: This version of Canva is specifically designed for teachers and students, and offers a range of book cover templates and design elements.
7. Crello: This graphic design platform offers a range of templates and design elements that you can use to create professional-looking book covers.
8. Visme: This website offers a range of templates and design elements that you can use to create book covers for free.
9. Piktochart for Education: This version of Piktochart is specifically designed for teachers and students, and offers a range of book cover templates and design elements.
10. Adobe Spark for Education: This version of Adobe Spark is specifically designed for teachers and students, and offers a range of book cover templates and design elements.
11. FotoJet for Education: This version of FotoJet is specifically designed for teachers and students, and offers a range of book cover templates and design elements.
12. Canva for Nonprofits: This version of Canva is specifically designed for nonprofit organizations, and offers a range of book cover templates and design elements.
13. Piktochart for Nonprofits: This version of Piktochart is specifically designed for nonprofit organizations, and offers a range of book cover templates and design elements.
14. Adobe Spark for Nonprofits: This version of Adobe Spark is specifically designed for nonprofit organizations, and offers a range of book cover templates and design elements.
15. FotoJet for Nonprofits: This version of FotoJet is specifically designed for nonprofit organizations, and offers a range of book cover templates and design elements.
16. Canva for Business: This version of Canva is specifically designed for businesses, and offers a range of book cover templates and design elements.
17. Piktochart for Business: This version of Piktochart is specifically designed for businesses, and offers a range of book cover templates and design elements.
18. Adobe Spark for Business: This version of Adobe Spark is specifically designed for businesses, and offers a range of book cover templates and design elements.
19. FotoJet for Business: This version of FotoJet is specifically designed for businesses, and offers a range of book cover templates and design elements.
20. Canva for Teams: This version of Canva is specifically designed for teams, and offers a range of book cover templates and design elements.