HTML2PDF Rocket vs OCR.space

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.

OCR.space converts images and PDF documents into editable text through an online OCR service and API, and can create searchable PDFs. The web service accepts JPG, PNG, GIF, and PDF files without registration; its free web uploads are limited to 5 MB per document. The API returns extracted text in JSON and supports images and multi-page PDFs. It offers three OCR engines: Engine 2 is the default, while Engine 3 supports handwriting, tables, and more than 200 languages. An `isTable` option is recommended for receipts, invoices, and other table-structured documents. The free plan is free, with 25,000 monthly requests and a searchable-PDF watermark; Engine 3 has an additional 2,500 conversions, but cannot produce searchable PDFs. PRO costs $30 a month, PRO PDF costs $60 a month, and Enterprise starts at $999 a month. OCR.space Local runs offline in self-hosted environments; its license price is available from sales.