
HTML/URL to PDF and screenshots, plus Factur-X/ZUGFeRD e-invoices; free tier.
PolyDoc API is a free Documents & Productivity API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Convert HTML to PDF and screenshots with a reliable REST API. Build automated document workflows with templates, webhooks, and cloud storage.
Details from polydoc.tech.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Send PDFs, ZPL labels and ESC/POS receipts to your own printers from any language; free tier
The PolyDoc API is provided by PolyDoc (polydoc.tech). Convert HTML to PDF and screenshots with a reliable REST API. Build automated document workflows with templates, webhooks, and cloud storage.
Yes. The PolyDoc API is listed in the Documents & Productivity category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The PolyDoc API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the PolyDoc API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The PolyDoc API is served over HTTPS, so it's safe to use in production.