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Documentation

Session 12: Book Size Preview & Selection

Date: March 4, 2026 Focus: Multi-size book preview, vendor size catalogs, pricing research

Size configuration (src/lib/book-sizes.ts): Complete Lulu (16 sizes) + Blurb (6 sizes) catalogs with 6 curated "featured" sizes based on photo book industry data (Q2-Q3 of popular sizes)
Database migration: Added book_size column to books table (defaults to lulu_us_letter)
Dynamic PDF sizing (TributeBookPDF.tsx): Replaced hardcoded LETTER with dynamic pageSize prop. All styles (padding, fonts, photos) scale proportionally using geometric mean of width/height ratios
PDFDownloadButton: Accepts bookSizeKey prop, looks up dimensions from config
Dashboard size selector: Dropdown in book header with "Compare Sizes" link
Size preview page (/dashboard/{bookId}/sizes): Proportional visual mockups for all 6 featured sizes, on-demand PDF generation per size, select & save

Confirmed all Lulu trim sizes from lulu.com/products
Confirmed all Blurb photo book sizes
Discovered Lulu has real-time pricing API: POST /print-job-cost-calculations/
Blurb has no pricing API (dashboard only)
Neither vendor supports direct customer payment passthrough — always wholesale model (us → vendor)

6 featured sizes (curated from industry data): US Trade 6x9, Small Square 7x7, Standard Portrait 8x10, Square 8.5x8.5, Standard Landscape 10x8, US Letter 8.5x11
No 5x7: Neither Lulu nor Blurb offers exact 5x7. Closest: 5x8 (Novella), 5.5x8.5 (Digest)
Lulu for pricing integration: Only vendor with real-time pricing API
Payment model: Customer → Stripe → Vendor (wholesale). No way to avoid being payment custodian, which is fine for margin control

Push book_size migration to production (npm run db:push)
Integrate Lulu print-job-cost-calculations API for real-time pricing
Build print order checkout flow (Stripe for customer payment, Lulu API for fulfillment)
Add bleed/margin specs per vendor for print-ready PDFs
Consider Blurb static price table or custom API access