PDFAid
PDFAid is an easy-to-use online tool that helps you work with PDF files without installing any software. It lets you convert PDFs to and from popular formats like Word, Excel, PowerPoint, images, and text, as well as create PDFs from Office documents and images. With PDFAid, you can merge or split files, compress PDFs to reduce their size, edit text and pages, add watermarks, annotations, and signatures, and fill out PDF forms directly in your browser. The service also includes OCR to turn scanned documents into searchable, editable text, along with an AI-powered chat feature that helps you summarize documents or find answers inside your PDFs. Overall, PDFAid makes managing and editing PDFs simple, fast, and accessible online.
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PDF4All
PDF4All is an online platform offering a wide array of PDF and image tools designed to optimize, convert, merge, and edit files effortlessly. It enables users to compress PDFs and images without losing quality, convert various file formats like Word, PowerPoint, and Excel to PDF, and vice versa. The platform also offers features like rotating, splitting, and cropping PDFs, as well as extracting images from PDF files. PDF4All simplifies the document management process by making it accessible to everyone, regardless of their technical expertise, with an easy-to-use, no-cost solution.
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FixMyPDF
FixMyPDF is a privacy-first, free online PDF toolkit offering 70+ tools to convert, organize, secure, optimize, and edit PDF files. All processing is 100% browser-based—no file uploads, no registration required, and no data tracking. Features include compressing PDFs, converting images (JPG, PNG, SVG, etc.) to PDF and vice versa, editing metadata, adding or removing password protection, splitting & merging, text extraction, watermarking, annotation editing, and much more. Used by over 10,000 users and processing 100,000+ files with a 4.9★ rating.
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Adobe PDF Library SDK
Adobe PDF Library is the only commercial PDF SDK built on Adobe Acrobat's own core engine, delivering the same rendering accuracy, PDF spec coverage, and behavior as Acrobat itself.
Available in Modern C++, Adobe C/C++, .NET, .NET Framework, and Java, and supported on Windows, macOS, and Linux. Create, edit, merge, split, annotate, and watermark PDFs programmatically; convert to and from Word, Excel, PowerPoint, PDF/A, PDF/X, and more; add OCR, digital signatures, redaction, and encryption; and process AcroForms and XFA forms.
SOC 2 Type 2 compliant, with a 91% customer retention rate among enterprise users.
For enterprise deployment, the pdfRest API Toolkit Container packages this technology as a self hosted REST API for on premises, private cloud, or hybrid environments.
Datalogics also offers Scout, an AI assistant, and an MCP server so teams can bring PDF capabilities into AI powered workflows.
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