Best Free PDF SDK of 2024

Pdftools can help you process thousands of documents, or even millions. The suite of SDKs from Pdftools is designed for industries that are document-intensive. They will make your document workflows faster, easier, and less stressful. The Pdftools products are built on SDKs or APIs. They integrate seamlessly with your existing systems and applications. Process thousands of documents per minute. Our tools are designed to be fast and efficient. We are engineers at heart and only accept the most reliable, usable and well documented platforms. File sizes can be reduced, but quality and interactivity are not compromised. Your documents will be compliant with long-term archiving. We have documented every detail of our products so that you can easily get started.

Global OEMs, SaaS and enterprise end-users rely on Adobe PDF Library to automate the creation, editing and management of PDFs. An Adobe partner, our SDK uses the same source code as Acrobat for stability, reliability and quality results. Languages: .NET, .NET Framework, Java and C/C++ Platforms: Windows, Linux & MacOS Package managers: NuGet & Maven Capabilities include but are not limited to: -Annotations -Content creation -Content modification -Color management -Extraction - text, images, forms -Compression/optimize -Conversion - PDF/A, PDF/X, EPS, PostScript, XPS, ZUGFeRD, color -Display, Printing -Extract text, images & other content -Forms - Import, export, flatten static & dynamic XFA forms, AcroForms -Images - extract, import/export, thumbnails, render/rasterize pages, separations -Optimization - size, content, images, etc. -OCR - add text to document, add text to image -PDF to Office Documents (Word, Excel, PPT) -Security - Viewer settings, redactions, password, encrypt/decryption, watermark Pricing options for OEMs, SaaS & end-users are flexible and based on usage. Shorten development times & get to market faster with Adobe PDF Library. Free trial - download today.

ComPDFKit offers a top-quality PDF SDK, PDF API, and PDF Server for companies, organizations, small businesses, and developers. It enables you to integrate PDF document annotation, editor, conversion, form filling, and signing into your applications or products, saving you time and expenses. ComPDFKit is compatible with Windows, Web, Android, iOS, Mac, Linux, and other cross-platform frameworks such as React Native, Flutter, and Electron with just a few lines of code. ComPDFKit Updates: 1. ComPDFKit API Sign up and Get 1000 Free Files Processing Monthly. Allow you to edit & convert PDF files, split/merge/insert/rotate/delete/extract PDF pages, and process PDFs with OCR. 2. Free Online Tools Work with PDF in ComPDFKit online PDF tools to convert PDF files to/from docx, xlsx, pptx, png, jpg, html, txt, csv, rtf files, etc. 3. Web Demo View, Edit, Annotate, Compare, Sign, Encrypt, Decrypt, watermark PDF files, and Create/fill out PDF forms online for free. 4. Community License Start-ups and Individual developers can get affordable prices from ComPDFKit. We help you to build your customized applications with a special price and discount.

pdfRest API Toolkit was made by developers, for developers. Rapidly integrate PDF workflows with your business applications, simply and seamlessly. Get started for free in seconds. pdfRest API Toolkit includes all the PDF processing tools you'll need, designed and developed by digital document experts with decades of experience to make your job easy: PDF to Word, PDF to Excel, PDF to PowerPoint, Add to PDF, Extract Text, Query PDF, Convert to PDF, PDF to Images, Convert to PDF/A, Convert to PDF/X, Compress PDF, Linearize PDF, Flatten Forms, Flatten Transparencies, Flatten Annotations, Flatten Layers, Merge PDFs, Split PDF, Encrypt PDF, Restrict PDF, Watermark PDF, Import Form Data, Export Form Data, Upload Files, Zip Files. Clear documentation with intuitive endpoints and parameters. Start with sample code in .NET, JavaScript, Python, PHP, and cURL for every endpoint. Gold-standard processing powered by Adobe® PDF Library™. Free to get started with no commitment. Affordable pricing for projects of all sizes. pdfRest was designed for developers, by developers to make working with PDFs as easy and intuitive as possible. Flexible APIs can be called from any language capable of making an API request. Send your first API call in

KDAN PDF Reader is a comprehensive PDF document service that leverages AI-driven technology to provide robust PDF capabilities. It enhances user efficiency in creating, managing, and sharing documents, streamlines business workflows, and transforms documents into invaluable digital assets through information exchange. Accessible on both mobile devices and desktops, KDAN PDF Reader is utilized by over 100 million users worldwide. It is widely used by educational institutions, government organizations, and businesses. KDAN PDF Reader provides flexible licensing options through its Licensing Service Center, complemented by comprehensive customer support, tailored to meet the diverse user requirements. Key Features: - Advanced AI capabilities: Translation, automatic detection and redaction of sensitive data, AI analyst Chatbot, table extraction, and document comparison. - Edit text in PDFs. - Secure documents with watermarks or PDF encryption. - OCR Convert PDF scans or images into searchable PDF files. - PDF management options include splitting, merging, and compression. - Seamless PDF conversion capabilities.

AmindPDF's user interface is very user-friendly and makes the operation of PDF easy. It can recognize PDF text as paragraphs or whole blocks of text, allowing users to edit text directly and smoothly, like in MS Word. for PDF protection, it allows adding passwords, setting document permissions, placing signatures, adding watermarks to PDF. It also supports batch operations to process files, such as merge/split tool, compression tool, creation tool, Bates numbering tool, and conversion tool, so users can process multiple PDF files at once. AmindPDF is available for a number of platforms: Windows, iOS, and Android. Users are able to use the same PDF tool on a computer or mobile phone. So AmindPDF let you process or edit PDFs anytime, anywhere. Edit PDF Text: AmindPDF allows the user to change the font, font size, font color, and font style, and reset the alignment of pdf text. Edit Images: The user can select the images in pdf, then manipulate the images: replace an image, rotate the image, crop the image, or remove the image. AmindPDF can combine more than one PDF or image file into one PDF. The file name of being combined files will be used to build the outline of the combined pdf.

FPDF is a PHP solution that allows you to create PDF documents directly from PHP. FPDF stands for free. You can use it for whatever purpose you like and make any modifications to suit your needs. FPDF doesn't require any PHP extension (except Zlib to enable compression or GD for GIF support). It works with PHP5 (>= 5.1), PHP7, and PHP8. FPDF can be accessed quickly using the tutorials. FPDF can generate documents in many languages other than the Western European ones like Central, Cyrillic and Greek, provided they have TrueType or Type1 sources that contain the appropriate characters. UTF-8 is also possible. PDFlib is slower than UTF-8 in terms of speed of creating a document. However, the speed of generating a document without the resentment is very reasonable and adequate for most cases, except when its documents are specifically compiled, extended, or modified.

Vanilla.PDF is a PDF toolkit that's easy to use and has the most power. The framework supports all PDF formats, PAdES electronic signings, including PKCS#11 interface. A well-documented interface with fully-featured examples assures that the results meet the highest market standards. For any questions, please don't hesitate to contact us!

PDFlib GmbH is a company that is solely focused on PDF technology. Since 1997, our products have been used by thousands of customers. We were one of the founding members in 2006 of the PDF Association (formerly PDF/A Competence Center). The company closely monitors market developments and trends, such as the ISO standards for PDF. PDFlib GmbH products can be found all over the globe, with major markets in North America, Europe, and Japan. PDFlib is a well-known developer component that allows for the creation and manipulation of PDF documents. PDFlib's main goals are dynamic PDF creation on a Web server and PDF creation in any type of server, desktop, or mobile application. PDFlib can be used to create dynamic PDF documents from database content, similar to dynamic Web page pages. PDFlib has been used in many different situations and environments since 1997. Application programmers can use PDFlib to create PDF output that includes text, graphics, and interactive elements.