LEADTOOLS PDF SDK

editing PDF annotations and markup, and related structural updates, with the LEADTOOLS PDF SDK, where the official PDF SDK page says LEADTOOLS supports reading, displaying, editing, and writing PDF annotations and markups that work with Adobe Acrobat and other compliant readers, and that users can collaborate by writing comments and drawing shapes on top of the document without making permanent changes, and where the Leadtools.Pdf help feature list, Help Version 23.0.2024.2.29, documents PDF Annotations as load and save annotations, create, edit, delete, add and reply to annotations, show and hide all annotations, and read and write annotation viewing flags across the listed annotation types, and separately lists PDF Document Text and Annotation Deletion as deletion of visible text, graphics and images with regions marked for deletion, page operations of extract, delete, insert or replace pages, bookmark create, extract, update and delete, document metadata create, extract and update, form field loading, filling and saving, document initial view settings, and PDF JavaScript extract, write, replace and delete, with no operation on those pages that edits or replaces existing page text, images or layout, and with the rich document editing of font styles, paragraph styles and text formatting documented for the separate Document Editor product at https://www.leadtools.com/sdk/document/document-editor-html5 rather than for the PDF SDK

converting documents to and from PDF with the LEADTOOLS Document Converter component, where the PDF SDK page says the Document Converter API can perform conversion to and from PDF and lists converting to and from PDF for PDF/A, other document and Office formats, images, HTML, EMF and SVG, together with conversion between PDF and PDF/A, conversion between PDF standards versions, linearizing PDFs for Fast Web View, distilling Postscript into PDF and converting PDF documents into ISO compliant PDF/A-1b files, and where the Document Converter page names Adobe Acrobat PDF and PDF/A, Microsoft Office DOC DOCX XLS XLSX PPT PPTX PST EML MSG and XPS, CAD formats such as DXF DWG and DWF, TIFF JPEG PNG EXIF and HEIC among raster images, Plain Text RTF HTML MOBI and ePUB, and IBM AFP MO DCA IOCA and PTOCA, says images and documents can be converted to SVG, and documents deployment on Windows, Linux, macOS, Android, iOS and Web for .NET 6 and later, .NET Framework, .NET MAUI, Xamarin, UWP, WinForms, ASP.NET and web services, programmed in C#, VB, XAML, Java and HTML or JavaScript

extracting content from PDF documents with the Leadtools.Pdf assembly in the LEADTOOLS PDF SDK, where the official help introduction says the assembly supports extraction of text, hyperlinks, annotations, form field data, digital signatures, bookmarks and metadata, and its PDF text and image extraction feature list names extraction, selection, searching and retrieving of text in PDF documents, detection of text links, indexing of text to an optimized speed, extraction of images embedded within a PDF document and saving them into many raster formats, extraction of internal links between pages, and creation extraction and update of document metadata covering title, author, subject, keywords, creation date, modification date, producer and PDF version, and where the PDF SDK page says data such as unicode text and form fields, images, fonts, annotations, shapes, hyperlinks, bookmarks, table of contents and document metadata can be parsed, updated and extracted, with PDF Portfolio schema, embedded PDF files and PDF attachments extractable, documented at help version 23.0.2024.2.29

viewing PDF files with the Document Viewer component of the LEADTOOLS PDF SDK, where the PDF SDK page says you load and view any PDF file using the Document Viewer API framework, and its Online Demo Applications section for the HTML5 and JavaScript Document Viewer states that the following features are demonstrated: load a document from local disk and url, use thumbnail viewer for page selection, view any bookmarks included in the document, and interactive zooming and panning, and where the Document Viewer SDK page describes an OEM ready document viewing solution for .NET in C# and VB and for HTML5 and JavaScript with viewing features including text search, memory efficient paging, inertial scrolling and vector display, able to view raster and document formats alike, with the HTML5 and JavaScript edition building zero footprint web applications without plug ins and the .NET edition targeting Windows and Xamarin desktop applications, while the same demo list also names drawing annotations and printing documents and annotations, which are not carried here because annotation authoring and printing are separate capabilities, and the PDF SDK page claims about viewing accuracy and speed are marketing rather than documented test results

running OCR through the separate Apryse OCR add-on to the Apryse Server SDK, not the LEADTOOLS PDF SDK itself: accepting scanned images or image-based PDFs, converting them to searchable PDFs and structured text with position data, supporting 80+ languages, running inside the customer application on customer infrastructure, with a separate Handwriting ICR module for handwriting and Smart Data Extraction for tables/key-value pairs.

The scope records the documented OCR add-on behavior and its PDF input/searchable-output path, and explicitly keeps it separate from the PDF SDK entitlement: no claim that OCR is included in the PDF SDK, no free tier, no hosted-service claim, and no guarantee of recognition accuracy, layout fidelity or legal/compliance outcomes

digitally signing PDF documents with the LEADTOOLS PDF SDK, where the PDF SDK page says the PDF SDK libraries can add digital signatures to PDF files, retrieve information from embedded signatures and verify signatures to see whether the PDF has been manipulated, and the Leadtools.Pdf help feature list says a digital signature can be added to a PDF document from a PFX file and that relevant information can be retrieved from the embedded signature, and where the same PDF SDK page says that when combined with the eSignature support integrated in the LEADTOOLS Document Viewer, developers can also add simple electronic signatures to the PDF before creating the digital verification certificate, with no algorithm, digest, timestamp, signature appearance or validation policy documented on the pages read

protecting PDF documents with encryption and permissions using the LEADTOOLS PDF SDK, where the Leadtools.Pdf help feature list, at help version 23.0.2024.2.29, documents PDF encryption and decryption as password encryption and decryption with 40 and 128 bit RC4 and 256 bit AES, setting or modifying document security permissions, and removing encryption for existing PDF documents, and where the PDF SDK page says the LEADTOOLS PDF libraries fully support PDF encryption and PDF permissions to control editing, printing at high and low resolution and copying content, with neither page documenting owner versus user passwords, encryption defaults or a permission matrix

merging multiple PDF files into a single PDF document with the LEADTOOLS PDF SDK, where the Leadtools.Pdf help feature list, at help version 23.0.2024.2.29, has an entry for PDF file merging and extraction of pages which includes the operation merge multiple existing PDF files into a single PDF file, and where the PDF SDK page section on comprehensive multipage processing APIs lists merge multiple PDF files into a single file among its multipage features, while neither page states an ordering rule, a page selection option, or any bookmark, metadata, annotation or form preservation behaviour for the merged output, and the same pages list split, extract, delete, insert, replace, page order manipulation and thumbnail generation as separate multipage operations

reducing PDF file size with the LEADTOOLS PDF SDK, where the PDF SDK page says LEADTOOLS uses artificial intelligence to compress and optimize both image and text-searchable PDF file types, that it maximizes image-based PDF compression with LEADTOOLS advanced MRC image segmentation and compression technologies, and that the PDF libraries can optimize text-searchable PDF files by analyzing document features to make the resulting file smaller and more efficient, and where the Leadtools.Pdf help feature list at help version 23.0.2024.2.29 documents a PDF Optimizer that allows optimization of image size, image compressions, and font embedding and sub-setting, with no compression algorithm, size reduction percentage, quality setting or lossless behaviour documented on the pages read