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image watermarking

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  1. Password Protect Excel Files in C# | Lock Unloc...

    Let's learn how to password protect Excel spreadsheet files using C#. Change the existing password or remove it to unlock the XLS/XLSX files using .NET API....discussed adding text and image watermarks to the Excel spreadsheets...Unlock Excel Files Online Watermark Excel Files using C# Protect/Unprotect...

    blog.groupdocs.com/merger/lock-unlock-excel-fil...
    more..

  2. How to convert documents with AI agents using M...

    Use any MCP-compatible AI agent to convert documents between PDF, Word, Excel, PowerPoint, Markdown, and 100+ other formats — this guide shows the pattern once and links every specific scenario....Watermark Product Solution GroupDocs...part of this server, so an image-only scan will not come out...

    docs.groupdocs.com/conversion/mcp/use-cases/con...
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  3. 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...PDF with page images) Required for raster image format redactions...

    docs.groupdocs.com/redaction/net/create-custom-...
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  4. 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/nodejs-java/create...
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  5. How to annotate documents with AI agents using ...

    Annotate documents with an AI agent over MCP: the agent reads your instruction, the GroupDocs engine writes the annotation locally, and an annotated copy appears in your output folder....Watermark Product Solution GroupDocs...Linux, including the Docker image, with a TypeInitializationEx...

    docs.groupdocs.com/annotation/mcp/use-cases/ann...
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  6. Evaluation Limitations and Licensing | GroupDocs

    Note GroupDocs.Metadata also works without the license in trial mode with certain limitations Evaluation version limitations You can easily download GroupDocs.Metadata for evaluation. The evaluation download is the same as the purchased download. The evaluation version simply becomes licensed when you add a few lines of code to apply the license. You will face following limitations while using the API without the license. API Limitations Document properties (Pdf, Word, Excel, PowerPoint, Visio, etc) Only first 5 properties can be read XMP API Only first 2 XMP schemes can be read EXIF API GPS IFD and Image thumbnail are unavailable Only first 5 properties can be read IPTC API Only first 5 properties can be read Id3v2, Lyrics3, APEv2 tags Only first 5 properties can be read QuickTime atoms Only first 5 atoms can be read File open Open maximum 15 files, otherwise, API throws exception File save Not supported in trial mode Licensing The license file contains details such as the product name, number of developers it is licensed to, subscription expiry date and so on....Watermark Product Solution GroupDocs...be read EXIF API GPS IFD and image thumbnail are unavailable Only...

    docs.groupdocs.com/metadata/java/evaluation-lim...
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  7. 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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  8. Search for Barcode e-Signatures | GroupDocs

    This article explains how to search for barcode electronic signatures within document pages using GroupDocs.Signature for Python via .NET API...Watermark Product Solution GroupDocs...return_content_type also return the barcode image. Python from groupdocs.signature...

    docs.groupdocs.com/signature/python-net/search-...
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  9. How to verify signed documents with an AI agent...

    Verify document signatures with an AI agent over MCP: check validity, read signer and certificate details, and understand the difference between a valid mark and a valid digital signature....Watermark Product Solution GroupDocs...text signature, a seal as an image: What do the QR codes and stamps...

    docs.groupdocs.com/signature/mcp/use-cases/veri...
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  10. 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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