Add a text or image watermark to PDF documents using JavaScript. Load the PDF document and insert the required watermark into it. Then save the result in a convenient format such as DOCX, PDF, MD, HTML, TXT, DOC, RTF, EPUB, XPS and more, and share the watermarked document with another person. Also remove the watermark from PDF document if the watermark was previously added to the document, and the reasons for adding are not longer relevant.
With this Node API, developers can add a watermark to PDF online. Just create the watermark using text or an image and then insert that watermark into your PDF document in JavaScript.
Note: there is no need to install any third party applications or libraries. Therefore, our Node software solution is very easy to use.
The given Node SDK is also helpful to remove watermarks from PDF. Removing a watermark in PDF means that you can load the desired PDF document stamped with a text or image watermark, remove this watermark from the PDF using JavaScript, and then save the output file in a convenient format – DOC, DOCX, PDF, JPEG, PNG, TIFF and others.
To evaluate how to add or remove a watermark in PDF with our Node API, load the PDF and the watermark as an image or text. Then select a convenient export file format – DOC, DOCX, PDF, HTML, RTF, XPS and others.
Use the following example to see how it works:
import * as fs from "fs";
const wordsApi = new WordsApi("####-####-####-####-####", "##################");
const requestDocument = fs.createReadStream("Input1.pdf");
const requestImageStream = fs.createReadStream("Input2.jpg");
const requestWatermarkData = new model.WatermarkDataImage({
image: model.FileReference.fromLocalFileContent(requestImageStream)
});
const insertWatermarkRequest = new model.InsertWatermarkOnlineRequest({
document: requestDocument,
watermarkData: requestWatermarkData
});
wordsApi.InsertWatermarkOnline(insertWatermarkRequest)
.then((insertWatermarkResult) => {
console.log("Result of InsertWatermarkImageOnline: ", insertWatermarkResult);
const convertRequest = new model.ConvertDocumentRequest({
document: insertWatermarkResult.Document.Values(),
format: "pdf"
});
wordsApi.convertDocument(convertRequest)
.then((convertResult) => {
console.log("Result of ConvertDocument: ", convertResult);
});
});import * as fs from "fs";
const wordsApi = new WordsApi("####-####-####-####-####", "##################");
const requestDocument = fs.createReadStream("Input.pdf");
const requestWatermarkData = new model.WatermarkDataText({
text: "This is the watermark text",
layout: model.WatermarkDataText.LayoutEnum.Diagonal
})
const insertWatermarkRequest = new model.InsertWatermarkOnlineRequest({
document: requestDocument,
watermarkData: requestWatermarkData
});
wordsApi.insertWatermarkOnline(insertWatermarkRequest)
.then((insertWatermarkResult) => {
console.log("Result of InsertWatermarkTextOnline: ", insertWatermarkResult);
const convertRequest = new model.ConvertDocumentRequest({
document: insertWatermarkResult.Document.Values(),
format: "pdf"
});
wordsApi.convertDocument(convertRequest)
.then((convertResult) => {
console.log("Result of ConvertDocument: ", convertResult);
});
});import * as fs from "fs";
const wordsApi = new WordsApi("####-####-####-####-####", "##################");
const requestDocument = fs.createReadStream("Input.pdf");
const deleteWatermarkOnline = new model.DeleteWatermarkOnlineRequest({
document: requestDocument
});
wordsApi.deleteWatermarkOnline(deleteWatermarkOnline)
.then((deleteWatermarkOnlineResult) => {
console.log("Result of DeleteWatermarkOnline: ", deleteWatermarkOnlineResult);
const requestDocument = deleteWatermarkOnlineResult.Document.Values();
const convertDocument = new model.ConvertDocumentRequest({
document: requestDocument,
format: "pdf"
});
wordsApi.convertDocument(convertDocument)
.then((convertDocumentResult) => {
console.log("Result of ConvertDocument: ", convertDocumentResult);
});
});Install 'Aspose.Words Cloud SDK for Node.js' using NPM package manager. Run npm install asposewordscloud --save from the command line to install the SDK via the NPM package manager. As an alternative, you can manually clone Aspose.Words Cloud SDK for Node.js source code from GitHub and use it in your project. Please follow these Instructions to quickly get the necessary security credentials and access our REST API.
Refer to the Repository Documentation to see more details.
You can add a watermark to a document in other formats: