polydoc.tech - 2026 Pricing, Features, Reviews & Alternatives

PolyDoc is an HTML to PDF and screenshot conversion REST API designed for development teams and enterprises requiring automated document generation workflows. The service converts HTML content or URLs into high fidelity PDF documents and pixel perfect screenshots through a Chromium based rendering engine supporting JavaScript ES six and modern CSS. The architecture is stateless with isolated rendering environments deployed on EU based infrastructure to maintain data within EU and EEA jurisdiction.

The API supports PDF generation with archival formats PDF A one b, PDF A two b, and PDF A three b that include optional VeraPDF verification for compliance. It enables e invoicing through hybrid Factur X and ZUGFeRD formats with embedded structured XML data aligned with EN sixteen thousand nine hundred thirty one profiles. Accessible PDF creation targets PDF UA one standards with structure trees for screen readers and optional verification of accessibility rules. Security measures include user and owner password protection with configurable permissions and watermarking options that allow control over font, color, opacity, rotation, position, and repeat patterns. Layout customization covers standard page sizes including A zero through A six, letter, legal, tabloid, and ledger as well as custom dimensions, margins, orientation, headers, footers, page ranges, scaling, outline generation from document headings, and inclusion of standard metadata fields.

Screenshot capture supports PNG, JPEG, and WebP outputs with adjustable quality settings and options for full page or region capture with transparent backgrounds. Custom viewport dimensions and device pixel ratios up to ten times enable high resolution captures. Rendering control features enable injection of CSS and JavaScript, waiting for specific selectors or functions, selection of print or screen media types for CSS, CSS page size preference modes, and blocking of ads and trackers for cleaner captures. Template management offers an integrated code editor for HTML templates utilizing Liquid syntax with support for variables, loops, and conditionals that accept dynamic JSON data.

Asynchronous delivery via webhooks is supported with HMAC SHA two hundred fifty six signed payloads and configurable retry logic and headers. Completed outputs may be uploaded directly to customer cloud storage through presigned URLs for AWS Simple Storage Service, Google Cloud Storage, Microsoft Azure Blob Storage, Backblaze B two, Wasabi, and similar providers. A sandbox mode enables isolated integration testing with a quota multiple of the production allocation. The management dashboard provides API key administration, template editing, live conversion previews, analytics with charts and filtering, usage monitoring, and conversion tagging. The REST API is accessible from any environment supporting HTTP requests with sample implementations for multiple programming languages and integration guides for popular automation tools.