Investintech PDF Library SDK
Seamlessly integrate robust PDF editing, parsing and rendering functionalities into your projects with PDF library SDK. Multi-platform shared library (dll, so and dylib) with C-compatible interface. C#.Net, Python, Java 8, C++ 11, libraries/modules. APIs for Linux, Windows, and Mac. Numerous interface functions for transforming and creating new content for PDF files, providing a huge variety of options and broad flexibility for implementation tailored to the specific needs of your project. Efficient utilization of multi-core CPUs for stream decoding and content rendering purposes achieved by closely following portable document format specification guidelines. Apply electronic signatures (with or without cryptographic security layer). PDF encryption & decryption (a password-based encryption handler). Document structure manipulation (create, delete, move, insert, extract, resize, and rotate pages).
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Adobe Acrobat
Adobe Acrobat Studio is a leading enterprise document platform built to scale for global teams — delivering AI-powered document intelligence, trusted PDF tools, and on-brand content creation in one secure solution.
Core capabilities include PDF creation, editing, conversion, annotation, redaction, e-signatures, and fillable forms. AI Assistant enables conversational document intelligence across PDFs, Word docs, spreadsheets, and more — surfacing summaries, key insights, and source-linked citations for verified, audit-ready answers. PDF Spaces organizes files, collaboration, and context into centralized knowledge hubs. The Generate Presentation feature transforms any document into a polished, branded deck using AI and Adobe Express templates.
Enterprise-grade encryption, admin controls, and compliance workflows support secure document sharing and high-volume document processing at scale — across Legal, Finance, HR, Sales, and more. Available on desktop, web, and mobile.
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PDFEncrypt
PDFEncrypt is a free, open source utility to encrypt PDF files using standard PDF encryption algorithms. When a document is encrypted, its contents become unreadable. An authorized user can decrypt the document to obtain access to the contents. If a PDF document is encrypted with a password, the user must specify the password before the document can be viewed in Adobe Reader or Adobe Acrobat. PDFEncrypt provides a means to encrypt any standard PDF document for free, without the need to purchase the Adobe Acrobat software or upload your confidential PDF files to a third-party server for encryption. The app runs directly on your Windows PC and allows you to specify a password (required to open the document) as well as many options and permissions to apply to the PDF file.
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pdfRest API Toolkit
pdfRest is a REST API for high-volume PDF processing, built on the Adobe PDF Library. Call it from any language to convert, generate, extract, secure, and prepare PDFs in production pipelines, chaining calls by passing a resource ID between steps.
Convert Office, HTML, images, email, and Markdown to PDF, and PDF to Word, Excel, PowerPoint, images, Markdown, PDF/A, PDF/X, and PostScript. Generate PDFs from scratch with text, images, shapes, and attachments, with accessibility tagging. Extract via OCR, text/image extraction, form data, metadata, AI summarization, translation. Secure with signing, encryption, restrictions, watermarking, two-step redaction, and TDM Reserve to opt out of AI training. Handle prepress: color conversion, transparency flattening, page boxes, rasterization. Manage forms: import/export, flatten, XFA-to-AcroForm.
Deploy on pdfRest Cloud (US or EU) or self-host via Docker, Kubernetes, or AWS Marketplace (BYOL) — same API, same code, just change the base URL.
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