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HandTextAI turns plain text into realistic handwriting for cards, letters, and envelopes.

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Base URL

All public API endpoints are under: https://api.handtextai.com/api/v1

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What you can do

  • Generate PNG (transparent background) for easy overlay and digital use
  • Generate PDF (white background) for print workflows (crop/bleed/trim boxes, PDF/X-1a option)
  • Preview your settings with a watermarked 1200px-wide PNG
  • Fetch the font catalog via numeric font_id values (1–90)
  • Run Batch Generation (CSV + templates) via the dashboard (Batch Generation)

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Key concepts (important)

  • Authentication: send your API key as a Bearer token (Authorization: Bearer htext_...).
  • Single-page output: the renderer produces a single page. If your text overflows the available content height, remaining lines are not rendered.
  • DPI scaling rule: all pixel parameters (margins, font sizes, spacing) are specified at a 300 DPI baseline and automatically scaled when you set dpi: 600.
Next: head to the Quickstart or open the API Reference tab.