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image watermarking

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  1. Implement custom serialization with QR-Code sig...

    This article explains how to implement custom serialization for QR-code electronic signatures....Watermark Product Solution GroupDocs...into metadata signature to Image document. using ( Signature...

    docs.groupdocs.com/signature/net/implement-cust...
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  2. Redaction Basics | GroupDocs

    This article shows that how Java developers can apply metadata, Image, annotation and text redaction in their documents. Wide range of document formats is supported, such as, PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX and others....Watermark Product Solution GroupDocs...Replaces specific area of an image with a colored box ImageAreaRedaction...

    docs.groupdocs.com/redaction/java/redaction-bas...
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  3. Sign document with Text signature - advanced | ...

     This article explains how to sign document with Text electronic signatures using advanced options with GroupDocs.Signature API....Watermark Product Solution GroupDocs...setSignatureImplemen ( TextSignatureImpleme . Image ); // set up shadow options...

    docs.groupdocs.com/signature/java/sign-document...
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  4. Convert EML to PDF Using C#

    Learn how to Convert EML to PDF using C# with a simple C# code to transform EML files into PDF, leveraging GroupDocs.Conversion for fast email document AI conversion....Watermark Product Family GroupDocs.Merger...options such as page size, image handling, and security features...

    kb.groupdocs.com/conversion/net/convert-eml-to-...
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  5. How to search signatures with predicate functio...

    This article explains how to search signatures using predicate functions (Func) with GroupDocs.Signature API to filter search results based on custom criteria....Watermark Product Solution GroupDocs...ImageSearchOptions () }; // Filter image signatures by size SearchResult...

    docs.groupdocs.com/signature/net/search-signatu...
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  6. Create custom format handler | GroupDocs

    This article shows how to implement one or several interfaces for the document's features and required redaction....Watermark Product Solution GroupDocs...page images) IImageFormatInstance Required for raster image format...

    docs.groupdocs.com/redaction/java/create-custom...
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  7. Password Protect PDF Files in C# | Lock Unlock PDF

    Let's learn how to lock PDF files with password protection using C#. Change the existing password or remove it to unlock the PDF files using .NET API....discussed adding text and image watermarks to the documents to avoid...Protect PDF Files Online Watermark PDF Files using C# How to...

    blog.groupdocs.com/merger/lock-unlock-pdf-files...
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  8. Convert to Page Description Language formats wi...

    Learn about PageDescriptionLanguageConvertOptions class for PDL file formats (SVG, XPS, EPS, PS, PCL, TEX) in GroupDocs.Conversion for .NET....Watermark Product Solution GroupDocs...range specification, and watermark support. Supported Page Description...

    docs.groupdocs.com/conversion/net/convert-to-pa...
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  9. OCR support | GroupDocs

    This article demonstrates the ability to connect an external module (library) for the recognition of printed text (optical character recognition, OCR) on Images, either separate or embedded in documents...Watermark Product Solution GroupDocs...character recognition, OCR) on images, either separate or embedded...

    docs.groupdocs.com/search/net/ocr-support/
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  10. eSign document with Barcode signature | GroupDocs

    This article explains how to add Barcode signature on document page with various options like barcode type, barcode text, positioning, alignment and other visual settings with GroupDocs.Signature...Watermark Product Solution GroupDocs...Generally speaking, barcode is an image of a rectangular form that consists...

    docs.groupdocs.com/signature/net/esign-document...
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