GroupDocs.Watermark for Node.js via Java

Generate Node.js Watermarks for XLS Files

Implement robust watermarking in XLS spreadsheets with Node.js, tailored for protecting financial and personal data in Excel.

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Protect Business Documents: Generate Xls Watermarks

Strengthen Document Security with GroupDocs.Watermark for Node.js via Java: - A Powerful Watermark Generation Solution for Node.js via Java.

Streamline Secure Watermarking in Your Node.js via Java Applications: The Watermarker class acts as the core component of the GroupDocs.Watermark API. This library simplifies watermarks generation various document formats, including Xls. To get started, create a Watermarker instance before processing your document. Provide the Xls file path or a stream object to the constructor during initialization.
Generate Watermarks for Enhanced Protection: Empower watermarks that perfectly align with your security needs. Construct a Watermark object specifying the desired type. Unlike traditional page placement, you can embed watermarks within native document elements like headers or attachments, fortifying document security and adding a professional touch.
Fine-Tune Watermark Appearance for Optimal Impact: Control the visual aspects of your watermarks. Customize properties such as height, width, alignment (top, left, center, etc.), font families, and colors to achieve a visually effective and consistent outcome that reinforces document legitimacy.
Watermark Application and Secure Storage: Incorporate your watermarks using the Watermarker method. The library allows you to add multiple watermarks if necessary for enhanced protection. It’s recommended to save the modified Xls document to a separate, secure location to preserve the original file and safeguard your watermarked documents.

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// Generate image watermark for XLS

// Instantiate Watermarker passing source file
const watermarker = new groupdocs.watermark.Watermarker("input.xls");

// Generate watermark by providing image file
const watermark = new groupdocs.watermark.ImageWatermark("watermark.png");

// Get XLS result
watermarker.add(watermark);
watermarker.save("output.xls");

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Refined Watermark Integration

Our GroupDocs.Watermark API for .NET developers offers refined solutions for integrating watermarks seamlessly into any document. This tool is designed to create sophisticated, unobtrusive watermarks that ensure copyright protection while maintaining document aesthetics.

Gradient Watermark Effects

Implement gradient watermarks that blend smoothly across your documents. This feature allows for linear or radial gradients, adding a modern look to security features that enhances both protection and visual engagement without overpowering the content.

Pattern Watermarks for Extra Security

Use pattern-based watermarking to add an extra layer of security. Our API supports various patterns that can be intricately designed and repeated across the document, making the watermark more resistant to tampering and removal.

Document-Specific Watermarking

Tailor watermarks uniquely for different document types. Whether it’s legal contracts, business plans, or scientific reports, customize watermarks to suit the document’s purpose and reader accessibility, ensuring optimal integration and security.

Generate PDF image watermark

Generate image watermarks for all images presented inside a PDF document

TypeScript


    const groupdocsWatermark = require('@groupdocs/groupdocs.watermark')

    //  Load document as PDF
    const watermarker = new groupdocsWatermark.Watermarker("source.pdf");

    //  Create watermark based on PDF annotation
    const imageWatermark = new groupdocsWatermark.ImageWatermark("watermark.jpg");
    imageWatermark.setHorizontalAlignment(groupdocsWatermark.HorizontalAlignment.Center);
    imageWatermark.setVerticalAlignment(groupdocsWatermark.VerticalAlignment.Center);
    imageWatermark.setRotateAngle(-45);
    imageWatermark.setSizingType(groupdocsWatermark.SizingType.ScaleToParentDimensions);
    imageWatermark.setScaleFactor(1);

    //  Set up watermark options
    const images = watermarker.getImages();
    for (let i = 0; i < images.getCount(); i++) {
        if (images.get_Item(i).getWidth() > 100 && images.get_Item(i).getHeight() > 100) {
            images.get_Item(i).add(imageWatermark);
        }
    }

    //  Add text watermark to result document
    watermarker.save("result.pdf");
    watermarker.close();

GroupDocs.Watermark for Node.js via Java

GroupDocs.Watermark for Node.js via Java equips Node.js developers with the tools to create, compose, and embed watermarks in XLS files effectively. This API is designed for seamless integration into Excel workflows, facilitating the addition of both visible and invisible watermarks that are customizable for opacity, text, and images. Ideal for securing sensitive information in financial spreadsheets, client reports, or any Excel document that requires confidentiality, GroupDocs.Watermark offers advanced features such as conditional watermark placement based on content analysis. With support for all .NET environments, this solution ensures your documents are protected against unauthorized use and distribution.

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