GroupDocs.Watermark for Node.js via Java API

Node.js-Driven Watermarks in Spreadsheet Documents

Utilize Node.js to implement custom text or image watermarks seamlessly into Excel spreadsheets, securing your financial and analytical data with ease.

Secure Business Documents: Generate Watermarks for Excel Formats

Boost Your Document Security with GroupDocs.Watermark for Node.js via Java: Inject our API to your applications and generate watermarks for many supported file formats.

  1. Initiate Watermarking: Start document processing with the Watermarker class providing our main features. Instantiate it by passing to the constructor the Excel file which is supposed to be secured by generated watermarks.
  2. Create main Watermark object: Elevate your documents by sculpting bespoke Watermark objects. Beyond mere pages, they seamlessly integrate into native elements like attachments or headers, adding layers of security and professionalism.
  3. Refine Watermark Attributes: Fine-tune your watermarks with precision, adjusting dimensions, alignment, and color schemes. Every detail enhances document integrity, making your files unmistakably yours.
  4. Implement with Precision: Utilize the Watermarker method to apply your customized watermarks flawlessly. Whether singular or multiple, each watermark adds an extra layer of protection. For added security, consider storing your processed documents in a separate, secure location.
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// Generate text watermark for EXCEL

// Pass source file to Watermarker instance
const watermarker = new groupdocs.watermark.Watermarker("input.xslx");

// Generate text watermark and set its options
const  watermark = new groupdocs.watermark.TextWatermark
    ("My Watermark", groupdocs.watermark.new Font("Arial", 36));

// Obtain EXCEL result
watermarker.add(watermark);
watermarker.save("output.xslx");
npm i @groupdocs/groupdocs.watermark
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Advanced Watermarking Techniques

Discover cutting-edge watermarking techniques with our robust API, designed to integrate seamlessly into .NET environments. Perfect for adding sophisticated and secure watermarks to a diverse array of document types including presentations, legal documents, and technical diagrams.

Sophisticated Watermark

Dynamic Watermark Placement

Our API offers dynamic placement options that adapt watermark positioning based on document content. Ideal for complex layouts in presentations and technical diagrams, this feature ensures that watermarks are always optimally placed without interfering with the readability of underlying information.

Enhanced Security with Invisible Watermarks

Implement invisible watermarks that offer robust protection without altering the appearance of your documents. These watermarks are designed to be detected only through specific software tools, making them perfect for protecting sensitive information in legal and financial documents.

Automated Watermarking Workflows

Streamline your document security processes with automated watermarking workflows. Configure rules based on document type, content sensitivity, and user access levels to apply watermarks automatically, ensuring consistent security protocols are maintained across all documents.

Generate watermark for PDF attachments

This example shows how to generate watermarks in all PDF attachments

TypeScript


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

    //  Load PDF document
    const loadOptions = new groupdocsWatermark.PdfLoadOptions();
    const watermarker = new groupdocsWatermark.Watermarker("source.pdf", loadOptions);
    const pdfContent = watermarker.getContent(groupdocsWatermark.PdfContent.class);

    //  Generate text watermark
    const watermark = new groupdocsWatermark.TextWatermark('WaterMark', new groupdocsWatermark.Font('Arial', 19));

    //  Add watermark to suitable attachments
    for (const attachment of pdfContent.getAttachments().getInnerList().toArray()) {
        const info = attachment.getDocumentInfo();
        if (info.getFileType() !== groupdocsWatermark.FileType.Unknown && !info.isEncrypted()) {
            const attachedWatermarker = attachment.createWatermarker();
            attachedWatermarker.add(watermark);
            attachment.updateContent(attachedWatermarker);
            attachedWatermarker.close();
        }
    }

    //  Save processed PDF
    watermarker.save("result.pdf");
    watermarker.close();

GroupDocs.Watermark for Node.js via Java library

GroupDocs.Watermark for Node.js via Java is a powerful tool designed for backend developers looking to incorporate unique watermarks into Excel and OpenOffice spreadsheets. This versatile API allows for the embedding of text and image watermarks that can be fully customized in terms of font, size, color, and opacity. Compatible with a range of spreadsheet formats including XLS, XLSX, and ODS, the tool ensures that watermarks are applied with precision, maintaining the integrity and layout of your spreadsheets while offering robust protection against unauthorized use.
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Node.js Techniques for Excel Watermarking

Enhance spreadsheet security and data integrity with our Node.js API. Quickly add customized watermarks to Excel and OpenOffice files, safeguarding against unauthorized alterations.

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