OCR.space vs PDF4me API

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.

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.