Vertex Network

A small constellation of focused, fast, free tools for indie publishers, marketplace sellers, and creators. Each one solves a single, specific problem — no accounts, no upsell loops.

• kdpcover.pro

  Live

  For Self-published authors and cover designers

  Precision spine width and cover dimension calculator for Amazon KDP.

  Visit kdpcover.pro →

• shopifont.app

  Live

  For Shopify merchants and theme designers

  Type-pair previews and font-stack inspector for Shopify storefronts.

  Visit shopifont.app →

• etsymargin.tools

  Live

  For Etsy sellers and print-on-demand operators

  Margin, fee, and break-even calculator built for Etsy sellers — fees, shipping, and ad spend in one view.

  Visit etsymargin.tools →

• captionsnap.io

  Live

  For Creators on TikTok, Reels, and Shorts

  Fast, on-brand caption generator for short-form video creators.

  Visit captionsnap.io →