Show HN: Inkspan – one API for the PDF/doc plumbing I kept rebuilding

Inkspan launches a unified API for PDF and document infrastructure, offering endpoints to generate, translate, transform, and extract structured data from documents with usage-based pricing and a free tier of 100 documents per month.

DOCUMENT INFRASTRUCTURE Generate, translate, transform, and extract structured data from PDFs and documents — one clean API. Test an endpoint, integrate it, ship. No sales calls, no infrastructure to maintain. Free tier · usage-based pricing · SDKs for every language curl -X POST https://api.inkspan.dev/v1/generate/html \ -H "X-API-Key: ink live ..." \ -H "Content-Type: application/json" \ -d '{"html": "<h1 Invoice 1024</h1 "}' \ --output invoice.pdf Turn HTML, templates, or Markdown into pixel-faithful PDFs. Merge, split, compress, watermark, rasterize, and fill forms. Pull text and tables into clean JSON — with confidence scores, not false certainty. Translate a document or text into any language — LLM-powered. Every endpoint is a single authenticated POST. Pick your language: curl -X POST https://api.inkspan.dev/v1/generate/template \ -H "X-API-Key: ink live ..." \ -H "Content-Type: application/json" \ -d '{"template":"<h1 Hi {{name}}</h1 ","data":{"name":"Ada"}}' \ --output out.pdf python import requests r = requests.post "https://api.inkspan.dev/v1/generate/template", headers={"X-API-Key": "ink live ..."}, json={"template": "<h1 Hi {{name}}</h1 ", "data": {"name": "Ada"}}, open "out.pdf", "wb" .write r.content js const res = await fetch "https://api.inkspan.dev/v1/generate/template", { method: "POST", headers: { "X-API-Key": "ink live ...", "Content-Type": "application/json" }, body: JSON.stringify { template: "<h1 Hi {{name}}</h1 ", data: { name: "Ada" } } , } ; fs.writeFileSync "out.pdf", Buffer.from await res.arrayBuffer ; | Method | Endpoint | Does | |---| Usage-based. Start free, scale as your product grows — no seats, no contracts. Free tier — 100 documents/month. No card required. Upgrade your plan: