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errores pdf

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  1. NullReferenceException when extracting PDF file...

    Hello, We are getting an exception when extractor some Pdf files… System.NullReferenceException: Object reference not set to an instance of an object.\r\n at Aspose.Pdf.Facades.PdfExtractor.GetAttachNames()\r\n at …...NullReferenceExcepti when extracting PDF files GroupDocs.Search Product...exception when extractor some PDF files… System.NullReferenceExcepti:...

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  2. Working with metadata in PDF documents | Docume...

    Detecting the version of a Pdf document The following sample of code will help you to detect the Pdf version a loaded document and extract some additional file format information. Load a Pdf document Extract the root metadata package Use the FileType property to obtain file format information AdvancedUsage.ManagingMetadataForSpecificFormats.Document.Pdf.PdfReadFileFormatProperties using (Metadata metadata = new Metadata(Constants.InputPdf)) { var root = metadata.GetRootPackage<PdfRootPackage>(); Console.WriteLine(root.FileType.FileFormat); Console.WriteLine(root.FileType.Version); Console.WriteLine(root.FileType.MimeType); Console.WriteLine(root.FileType.Extension); } Reading built-in metadata properties To access built-in metadata of a Pdf document, please use the DocumentProperties property defined in the DocumentRootPackage class....metadata in PDF documents Working with metadata in PDF documents...feedback Detecting the version of a PDF document The following sample...

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  3. Extract images from PDF documents | Documentation

    This article explains that how to extract images from Pdf documents...data from PDF documents / Extract images from PDF documents Extract...Extract images from PDF documents Leave feedback To extract images...

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  4. Add watermarks to PDF documents | Documentation

    The watermarking Java API allows you to add watermarks to Pdf documents. Adding watermarks to a particular page or adding watermarks on all images or attachments of a particular page is possible....watermarks to PDF documents Add watermarks to PDF documents Leave...page of a PDF document. Adding watermark to a PDF document using...

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  5. Pdf Digitally signing | Documentation

    This article explains how to sign document with Digital electronic signatures using advanced options with GroupDocs.Signature API....Electronic Signatures / ✎ Pdf digitally signing Pdf Digitally signing...signature = new Signature ( "sample.pdf" )) { // initialize digital option...

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  6. Extract text from PDF documents | Documentation

    To extract a text from Pdf documents getText and getText(int) methods are used. These methods allow to extract a text from the entire document or a text from the selected page. Here are the steps to extract a text from Pdf document: Instantiate Parser object for the initial document; Call getText method and obtain TextReader object; Read a text from reader. Warning getText method returns null value if text extraction isn’t supported for the document....Extract data from PDF documents / Extract text from PDF documents Extract...Extract text from PDF documents Leave feedback To extract a text...

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  7. Save in rasterized PDF | Documentation

    The following example demonstrates how to save the document as a rasterized Pdf file: final Redactor redactor = new Redactor(Constants.SAMPLE_DOCX); try { // Here we can use document instance to perform redactions redactor.apply(new ExactPhraseRedaction("John Doe", new ReplacementOptions("[personal]"))); SaveOptions tmp0 = new SaveOptions(); tmp0.setAddSuffix(false); tmp0.setRasterizeToPdf(true); // Saving as rasterized Pdf with no suffix in file name redactor.save(tmp0); } finally { redactor.close(); }...Save in rasterized PDF Save in rasterized PDF Leave feedback The...the document as a rasterized PDF file: final Redactor redactor...

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  8. Extract metadata from PDF documents | Documenta...

    To extract metadata from Pdf documents getMetadata method is used. This method allows to extract the following metadata: Name Description title The title of the presentation. subject The subject of the presentation. keywords The keyword of the presentation. author The name of the presentation’s author. application The name of the application. application-version The version number of the application that created the presentation. created-time The time of the presentation creation. last-saved-time The time of the the presentation when it was last saved....data from PDF documents / Extract metadata from PDF documents...documents Extract metadata from PDF documents Leave feedback To extract...

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  9. How to add attachment to PDF document | Documen...

    This article explains how to add attachment to Pdf document with GroupDocs.Merger within your Java applications....attachment to PDF document How to add attachment to PDF document Leave...feedback It is a known fact PDF files are great for demonstration...

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  10. Iterative Signing of PDF Documents - efficient ...

    Understand the concept of iterative signing for Pdfs and how to implement it using a product API. Maintain document integrity while enabling multiple approvals with digital certificates.... Iterative signing of PDF documents with digital certificates...Role of Digital Signatures in PDF Documents Iterative Digital Signing...

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