Shareable calculator
Share the Book Spine Width Calculator or embed the calculator on a relevant website.
Link directly to Book Spine Width Calculator when answering questions for self-publishers, designers, and small presses. The calculator runs in the browser and does not require an account.
https://bookspinewidth.com/Use the iframe snippet below on relevant blogs, guides, newsletters, club pages, or resource pages. Keep the attribution link visible so readers can open the full calculator, FAQ, and assumptions.
<iframe src="https://bookspinewidth.com/embed" title="Book Spine Width Calculator" width="100%" height="760" style="border:1px solid #d9e2df;border-radius:8px;" loading="lazy"></iframe>This version resizes the iframe to fit its content, so there is no inner scrollbar when the result expands or on narrow screens. Paste both the iframe and the small script.
<iframe src="https://bookspinewidth.com/embed" title="Book Spine Width Calculator" id="utility-embed-book-spine-width" width="100%" height="760" style="border:1px solid #d9e2df;border-radius:8px;" loading="lazy"></iframe>
<script>
window.addEventListener("message",function(e){if(!e.data||e.data.type!=="utility-embed-height")return;var f=document.getElementById("utility-embed-book-spine-width");if(f&&f.contentWindow===e.source&&e.data.height){f.style.height=e.data.height+"px";}});
</script>Share the plain-text checklist alongside the calculator when a full embed is not a good fit.
Use this tall SVG as a starter asset for Pinterest or other visual planning channels.
Always confirm final cover dimensions with your printer or POD platform.