HookPDF
Turn HTML + JSON into professional PDFs via a simple API
FreemiumWeb
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About
HookPDF is a developer-focused PDF generation service that turns JSON payloads into PDFs using HTML/CSS templates through a REST API. Instead of working with complex PDF libraries or proprietary drag-and-drop editors, users write standard web templates and populate them with data via an API call to create documents such as invoices and other workflow outputs. The product emphasizes pixel-accurate rendering with support for modern CSS features like Flexbox and Grid, aiming to reduce print-media styling issues. It supports asynchronous generation for higher-volume workloads and can deliver results via webhooks. HookPDF also highlights a console-based, code-first template workflow and provides multi-language examples (cURL, Node.js, Python, PHP, C#, PowerShell) to integrate into existing systems. Pricing is credit-based, where each PDF page consumes one credit, with monthly or yearly plans.
Problem & solution
Problem
Generating consistent PDFs from dynamic data is time-consuming with PDF libraries.
Solution
Send JSON to HTML/CSS templates via API to render PDFs with async and webhooks.
Who it's for
Developers needing automated PDF generation in apps and pipelines.
Main features
- REST API
- HTML/CSS templates
- Dynamic data binding
- Async generation
- Webhook delivery
Use cases
- Generate invoices from JSON
- Automate document workflows
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