{"template":{"name":"book-cover","description":"Book/novel cover showcase with 3D book effect, author profile, review quotes, chapter previews, and publisher branding. Features creative image integration for book cover, author photo, award badges, page textures, publisher logo, and decorative book stack. Perfect for book launches, author promotions, and literary marketing.","aspect_ratio":"40:21","placeholders":[{"key":"accent_color","description":"Accent/highlight color (hex/rgb/hsl)."},{"key":"author","description":"Author name shown in metadata."},{"key":"author_image","description":"Custom placeholder value injected into the template."},{"key":"award_badge","description":"Custom placeholder value injected into the template."},{"key":"book_cover","description":"Custom placeholder value injected into the template."},{"key":"decorative_books","description":"Custom placeholder value injected into the template."},{"key":"height","description":"Output image height in pixels."},{"key":"number","description":"Custom placeholder value injected into the template."},{"key":"page_texture","description":"Custom placeholder value injected into the template."},{"key":"pages","description":"Custom placeholder value injected into the template."},{"key":"publisher_logo","description":"Custom placeholder value injected into the template."},{"key":"rating","description":"Custom placeholder value injected into the template."},{"key":"review_quote","description":"Custom placeholder value injected into the template."},{"key":"review_source","description":"Custom placeholder value injected into the template."},{"key":"reviews","description":"Custom placeholder value injected into the template."},{"key":"status","description":"Custom placeholder value injected into the template."},{"key":"subtitle","description":"Supporting subtitle or body text."},{"key":"this","description":"Custom placeholder value injected into the template."},{"key":"title","description":"Main title text shown prominently."},{"key":"width","description":"Output image width in pixels."},{"key":"year","description":"Custom placeholder value injected into the template."}]}}