Compare the Top Small Business PDF APIs as of October 2025

What are Small Business PDF APIs?

PDF APIs are software interfaces that enable developers to integrate PDF-related functionality into their applications or websites. These APIs allow for the creation, manipulation, conversion, and extraction of content from PDF files without requiring users to manually open or edit the files. Common features of PDF APIs include merging, splitting, editing text, adding annotations, and extracting text and images. They can also handle PDF conversions, such as converting PDFs to other formats like Word, Excel, or HTML, and vice versa. By using PDF APIs, businesses can automate document workflows, enhance document management systems, and integrate PDF capabilities into custom applications seamlessly. Compare and read user reviews of the best Small Business PDF APIs currently available using the table below. This list is updated regularly.

  • 1
    PrizmDoc

    PrizmDoc

    Accusoft

    Through a collection of UI components and content manipulation APIs, PrizmDoc provides customizable document processing to help developers deliver in-browser document creation, editing, and collaboration functionality, to enhance their software applications. Our functionality integrates on the client and server side smoothly, creating a seamless experience for both you and your users. Render and display dozens of file types, from Adobe PDFs and Microsoft Office files to CAD and DICOM formats, in a browser without the need to download or open native applications. Designed for seamless integration with your application, our zero footprint HTML5 viewer is fully customizable, from quick integrations with minimal configuration to complete programmatic control using our extensive JavaScript API.
  • 2
    Document APIs

    Document APIs

    GrapeCity

    Fast, efficient Document APIs for .NET Standard 2.0 and Java Take total document control with ultra-fast, low-footprint document APIs for enterprise apps. Generate, load, edit, save spreadsheets, PDF, images, and DOCX files. Create large spreadsheets, Word, images, and PDF documents, fast. No dependencies on Excel, Word, or Acrobat Run on Windows, Mac, Linux Deploy to Azure, AWS, and AWS Lambda What’s New in GrapeCity Documents v5: - Full support for .NET 6 - SVG support for GrapeCity Documents for PDF and Imaging - Print PDF documents on Windows with GrapeCity Documents for PDF - UI enhancements for GrapeCity Documents for PDF Viewer - And much more!
    Starting Price: $999 per developer
  • 3
    PassportPDF
    This modern cloud infrastructure offers freemium microservices, productivity-oriented solutions in many fields such as compression, unified APIs working on any platform, on any client, from any programming language, and a new SaaS licensing. A guide and complete documentation provide all the necessary steps for authentication, communication with the API, processing documents, and managing errors. There is also a section about best practices regarding efficiency. Minimalistic and straightforward ASP.NET Core MVC application which demonstrates how to use DocuVieware through the PassportPDF Rest API to visualize documents. This application will evolve over time, as other similar demos are implemented. Minimalistic and straightforward ASP.NET 4.6.2 application which demonstrates how to use DocuVieware through the PassportPDF Rest API to visualize documents. This application will evolve over time, as other similar demos are implemented.
    Starting Price: $6,000 per year
  • 4
    Aquaforest SDK

    Aquaforest SDK

    Aquaforest

    Aquaforest SDK is a powerful toolset for processing PDFs including PDF content extraction, searchable PDF creation, OCR with standard (Aquaforest) engine, OCR with extended (Canon IRIS) engine, and handwriting OCR options via Google and Microsoft APIs. Advanced PDF and barcode toolkit, high performance with support for up to 64 cores. The SDK is able to analyze PDF documents and automatically extract name/value pairs. The SDK has a wide variety of PDF manipulation capabilities including PDF merging, PDF attachment processing, PDF content extraction, XMP metadata processing, PDF/A validation, and more. The standard OCR engine supports 23 languages and is included in every edition of the SDK. This provides an interface to Google and Microsoft’s cloud OCR services which can be especially useful for special cases such as handwriting recognition. The SDK is able to read and recognize most standard barcode types.
  • 5
    LEADTOOLS PDF SDK
    With just a few lines of code, LEADTOOLS libraries empower developers with a comprehensive PDF API to implement reliable and multi-threaded PDF functionality, without the need for third-party dependencies like Acrobat. Robust PDF controls to read, write, convert, and view PDF files can be combined with state-of-the-art OCR, ICR, OMR, forms recognition, virtual printing, and scanning APIs within LEADTOOLS to create complete solutions that utilize the PDF format. Load and view any PDF file using the document viewer API framework. Tested against thousands of PDF documents, LEADTOOLS PDF SDK libraries provide impeccable viewing accuracy and speed that tops many market-leading PDF reading applications. LEADTOOLS accounts for common errors and differences between PDF file versions to give programmers peace of mind, minimize their testing phase, and create the best PDF applications faster.
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