Heavy document work, shipped as an API.

Generate, validate, convert and render EN 16931 invoices — UBL, CII, Factur-X and PDF/A-3. The formats France, Germany and the EU now require, without adopting a 400-page spec yourself.

Validation runs the official rule sets and returns every finding with its rule ID. Rendering uses the official KoSIT visualization — what you see is what auditors see.

Merge, split, extract text, read metadata and convert pages to images — the PDF plumbing every product needs and nobody wants to build twice.

Upload a document, get clean results back. The pages below come from the invoice PDF generated in CRT-01, converted by this API.

Turn any URL into a pixel-perfect capture — viewport or full page, PNG or JPEG, custom size and delay. Rendered by a real browser, returned as an image.

For previews, archives, monitoring, reports and anywhere a picture beats a link.

Score an address before you trust it. Syntax, MX records, disposable domains, role accounts, free providers — one call, one verdict, no email sent.

Stop burning onboarding on addresses that bounce, and spot throwaways at signup.

Any article URL in, clean structured text out. Title, word count, main content — no nav bars, no cookie walls, no ads. Text or Markdown.

Feed LLMs, build readers, index content — without writing a scraper per site.