HTML2PDF Rocket vs PDF4me API

HTML2PDF Rocket is a cloud service that converts a URL or submitted HTML into a PDF or image file. It can execute JavaScript while rendering pages, and its API lists JPG, PNG, BMP, and SVG as image outputs. PDF settings include page size, orientation, margins, grayscale, forms, print stylesheets, and headers and footers. The service is positioned for generating downloadable reports, brochures, and invoices from webpages. Code examples are provided for C#, JavaScript, PHP, Java, and Android, with links to examples for Python, Node.js, Go, and Swift. URL conversion supports SSL, HTTPS pages, and basic authentication. The maker says conversions taking over 30 seconds, or input or output files larger than 6 Mb, need batch or asynchronous parameters. The Free Plan costs nothing and includes 200 credits per month with a 5 Mb per-PDF limit; large PDFs use credits based on network traffic. BOOTSTRAPPED costs $5 a month and includes 500 credits and a 50 Mb per-PDF limit. Free generation stops when credit use reaches 100%, while paid accounts may continue at a slower generation rate.

PDF4me API provides document-processing endpoints and SDKs for developers, alongside browser-based PDF tools. The API supports conversion, OCR, signing and parsing; the web tools can convert, merge, compress, split, sign and edit PDFs. AI processing can parse invoices, classify files and extract structured data as JSON. SDKs are available for C#, Java, Python, JavaScript (Node.js) and Salesforce Apex. Listed integrations include Power Automate, Make, Zapier, n8n, RapidAPI, Microsoft Teams and Google Workspace, and the maker also offers no-code automation for workflow builders. Most endpoints use one call per document, while high-quality conversions, OCR and AI features use one call per page. The service says documents are processed in EU or US regions depending on account setup, deleted within minutes after completion and not retained for training. Free one-time call packs are listed from 500 to 25,000 calls. A custom sales option is listed for more than 25,000 calls, without a stated price.