Find Flipbook Tool with API for SEO-Optimized PDFs

I’m looking for a freelancer to research and recommend an online flipbook or PDF-to-web platform (similar to Publuu) that offers API access for automating flipbook creation and SEO setup without requiring an expensive enterprise plan.

Goal:
Turn 100+ PDF reports into interactive, crawlable web versions that can be indexed by search engines. The platform should allow programmatic upload, and metadata control (title, description, etc.) so each flipbook is properly SEO-optimized and visible to crawlers.

Requirements:
• Publicly accessible flipbooks (not hidden behind iframes)
• API or webhook support for creating and managing flipbooks
• Ability to edit or set metadata: title, description, canonical URL
• Affordable or mid-tier pricing (no enterprise-only solutions)
• Option for custom branding or domain preferred
• Optional: analytics, automation, or integration support

Deliverables:
1. Shortlist of 3–5 tools that meet the criteria
2. Comparison of features, pricing, and SEO accessibility
3. Final recommendation with rationale