Generate Amazon KDP compliant wrap-around paperback covers instantly in your browser. Auto-calculate spine widths, sample edge palette colors, and dynamically embed custom Google Fonts.
Everything you need to bypass Amazon's strict production review filters.
All PDF compiling executes directly in your browser using `pdf-lib`. No file upload limits, zero waiting on remote servers, and prompt local compilation.
Upload your front cover artwork, and CoverStudio automatically extracts the exact edge colors to paint your spine and bleed gutters seamlessly.
Input your page count and paper type. Our engine automatically calculates spine thickness down to four decimal places, snapping guides at 0.125 inches.
Select from a curated collection of Google Fonts. Load typography dynamically into the live preview, and embed the `.ttf` directly into the final PDF.
Four simple steps to format your wrap-around book cover.
Drag and drop your front and back cover graphics into our interactive canvas boxes.
Specify page count, trim size, and paper type (white, cream, color) to auto-adjust dimensions.
Pick a custom background color and choose a Google Font for your spine text.
Compile a flat, print-ready PDF containing embedded fonts and strict trim dimensions.
Select the tier that matches your publishing schedule.
Perfect for testing layouts and calculating precise trim templates.
Designed for active independent authors and content creators.
Built for bulk design agencies and large independent studios.
Quick resolutions to structural cover calculations and licensing queries.
Unlike standard converters, all compiling executes directly in your browser using client-side WebAssembly and high-performance `pdf-lib` libraries. Your manuscript graphics never leave your computer, ensuring 100% data privacy and instant rendering times.
Our calculations strictly follow the official KDP publishing equations down to four decimal places. For white paper, we use `pages × 0.002252 in`. For cream paper, we use `pages × 0.0025 in`. The canvas adjusts pixels dynamically to make sure you pass the review on your first try.
Yes! Upgrading to our Pro Creator or Enterprise tiers allows you to pick from a curated library of premium Google Fonts. These web fonts load on the canvas dynamically and are embedded directly as subset files inside the final print-ready PDF.
We support all standard Amazon paperback trim sizes (such as 6"x9", 5.5"x8.5", 8.25"x6", etc.) and case laminate hardcover templates. Bleed zones are automatically mapped at the default 0.125" margins.
The Free Starter tier lets you test covers up to 150 pages. The Pro Creator tier extends this to 800 pages (the absolute maximum allowed by KDP standard bindings), and the Enterprise tier supports any document configurations.
Unlike traditional online PDF compilers, CoverStudio processes all images and compiles document binaries directly inside your sandbox memory. Your source graphics never hit a cloud database.
Bypass Amazon KDP's strict preview filters with mathematically validated templates generated directly in your browser.
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