HTML/URL to PDF.
apilayer pdflayer API is a free Documents & Productivity API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Details from pdflayer.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Brazilian e-signature API with a free plan
PDF to text, RSS/Atom/JSON feeds to JSON and sitemaps to URL lists, paid per call via x402
The apilayer pdflayer API is provided by Pdflayer API (pdflayer.com). Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Yes. The apilayer pdflayer 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 apilayer pdflayer API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the apilayer pdflayer API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The apilayer pdflayer API is served over HTTPS, so it's safe to use in production.