3D Book Mockup Generator
Upload your cover and get a realistic paperback render with your book's true spine thickness, computed from page count and paper stock. Real-time WebGL you can drag to rotate. In-browser, no signup, transparent PNG export.
Sliced into faces using the trim, pages, and paper below, so set those first. PDF covers: export as PNG or JPG first.
Spine: 0.721″, rendered to scale. Exact cover file math lives in the spine calculator.
Drag to rotate, scroll to zoom. Real-time 3D.
With background None, exports have a transparent background. Your images never leave your browser.
A mockup with your book's real anatomy
Generic mockup templates render every book at the same fake thickness. This generator computes your actual spine from page count and paper stock, the same published per-page factors used for print cover files, so a 700-page epic looks like the object it will be, and a novella looks like one too. If you are preparing the print files themselves, the spine width calculator gives you the exact cover dimensions and dieline templates, and our print formatting guide covers the full interior-to-cover workflow.
Frequently asked questions
How do I make a 3D mockup of my book cover?+
Upload your front cover image (or your full print wrap), set your trim size and page count, and the generator renders a 3D book with your real proportions: the spine thickness comes from your page count and paper stock using the platforms’ published per-page factors. Drag the book to any angle in real-time 3D, pick a background, then export a transparent PNG up to 3000 px.
Why does page count matter for a mockup?+
Because it sets the spine. A 700-page epic is a visibly chunky object and a 130-page novella is a slim one; generic mockup templates ignore this and render every book at the same fake thickness. This generator computes the real spine from pages times per-page paper thickness, the same math used for print cover files.
Are my cover images uploaded to a server?+
No. Everything renders in your browser on a canvas element; your images never leave your device. That also means it works offline once the page is loaded.
What export sizes are available and are they transparent?+
PNG at 1200, 2000, or 3000 pixels square. With the background set to None, the PNG has a fully transparent background, ready to drop onto any launch graphic, website, or social template. The Studio and Dark backgrounds export as rendered.
Can I use these mockups commercially?+
Yes. The output is your own cover art rendered in 3D; use it on your website, ads, social posts, newsletters, and store pages freely.
The book behind the mockup
BlurbBio is the writing platform that gets manuscripts to this stage: Story Bible, 11 analysis types, and print-ready IngramSpark export with this exact cover math built in.
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