Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

PolyDoc (Developer Tools): PolyDoc is a developer-friendly API for HTML to PDF and screenshot conversion with high fidelity. Pricing: Start from $50/mo (example). (data verified August 2026)
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PolyDoc is a REST API that converts HTML strings or URLs into high-fidelity PDFs and screenshots using a Chromium-based rendering engine. It supports modern JavaScript (ES6+) and CSS, making it ideal for developers who need automated document generation in their applications.
Developers often struggle with generating consistent, pixel-perfect documents from web content. PolyDoc solves this by providing a reliable API that handles complex layouts, print CSS, and JavaScript execution, saving hours of manual work and ensuring output quality.
PolyDoc is best for software teams building SaaS products that require invoice generation, report creation, or screenshot capture. It is not for non-developers looking for a drag-and-drop tool; it requires coding to integrate.
Common use cases include generating PDF/A-compliant invoices, creating PDF/UA accessible reports for European compliance, producing e-invoices (Factur-X, ZUGFeRD), capturing high-resolution screenshots for visual testing, and automating document workflows with webhooks.
Editorial score from our review methodology — not user ratings.
PolyDoc pricing: Start from $50/mo (example).
PolyDoc offers a free trial to test the API before committing to a plan.
From $50/mo — includes a set number of conversions per month, suitable for small projects.
Higher volume with additional features like PDF/A and PDF/UA, available on request.
Custom pricing for high-volume needs with dedicated support.
Note: Exact pricing may vary; visit the official site for current details.