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PDF.ai

Free tier

Chat with any PDF and extract data via a powerful PDF API

Free tier available·All audiences·Powered by OpenAI·API available
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Key strengths

Conversational Q&A directly with PDF documentsPowerful PDF API for parsing, extracting, and splittingSupports a wide range of PDF types (legal, academic, financial)Fast and accurate text extraction from complex PDFsSimple integration for developers via REST API
Free tier + paid plans
Founded 2023
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Developer Documentation

PDF.ai provides a REST API for programmatic PDF processing with the following capabilities:

  • Parse — Submit a PDF and receive structured text output extracted from all pages.
  • Extract — Pull specific fields, tables, or data points from PDFs using natural language or structured queries.
  • Split — Divide large PDF files into smaller segments by page range or logical section.
  • Chat endpoint — Send a PDF and a question; receive an AI-generated answer grounded in the document content.

Integration Steps

  1. Register for an API key at pdf.ai.
  2. Send POST requests with your PDF (via URL or file upload) to the relevant endpoint.
  3. Parse the JSON response containing extracted text, answers, or document segments.
  4. Handle pagination and rate limits per your subscription tier.