Vertex Network

kdpcover.pro is one of 5 small, focused tools in the Vertex Network. Each one solves a single, specific problem for indie publishers, marketplace sellers, and creators — no accounts, no upsell loops.

• CaptionSnap

  Live

  For Social-media managers and indie creators

  Caption simulator for every social platform.

  Preview, truncate, and ship captions sized perfectly for every social platform.

  Visit CaptionSnap →

• Etsy Margin

  Live

  For Etsy sellers

  Find your true profit before you price.

  Free Etsy profit calculator with 2026 fees, country VAT, and a waterfall breakdown.

  Visit Etsy Margin →

• Shopifont

  Live

  For Shopify store owners and developers

  @font-face CSS for Shopify OS 2.0 themes.

  Generate ready-to-paste @font-face CSS for any Shopify Online Store 2.0 theme.

  Visit Shopifont →

• tokenmath

  Live

  For AI/ML developers

  Accurate token math for Claude, Gemini, and OpenAI.

  Token counter and cost calculator for every modern LLM, with up-to-date pricing.

  Visit tokenmath →