Add a watermark to Word or remove previously added watermarks using Dart

Using this Dart/Flutter library, stamp Word documents with an image or text watermark or remove an already added watermark in a few steps

Add a text or image watermark to Word documents using Dart. Load the Word 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 Word document if the watermark was previously added to the document, and the reasons for adding are not longer relevant.

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Word – add watermark in Dart

With this Dart/Flutter API, developers can add a watermark to Word online. Just create the watermark using text or an image and then insert that watermark into your Word document in Dart.

Note: there is no need to install any third party applications or libraries. Therefore, our Dart/Flutter software solution is very easy to use.

Remove watermark from Word – Dart

The given Dart/Flutter SDK is also helpful to remove watermarks from Word. Removing a watermark in Word means that you can load the desired Word document stamped with a text or image watermark, remove this watermark from the Word using Dart, and then save the output file in a convenient format – DOC, DOCX, PDF, JPEG, PNG, TIFF and others.

Work with watermark in Word

To evaluate how to add or remove a watermark in Word with our Dart/Flutter API, load the Word 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:

File needs to add watermarks
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Upload an image you want insert
Select the target format from the list
import 'package:aspose_words_cloud/aspose_words_cloud.dart';

final config = Configuration("####-####-####-####-####", "##################");
final wordsApi = WordsApi(config);

final requestDocument = (await File('Input1.docx').readAsBytes()).buffer.asByteData();
final requestImageStream = (await File('Input2.jpg').readAsBytes()).buffer.asByteData();
final requestWatermarkData = WatermarkDataImage();
requestWatermarkData.image = FileReference.fromLocalFile(requestImageStream);
final insertWatermarkRequest = InsertWatermarkOnlineRequest(
    requestDocument, requestWatermarkData);
final insertWatermarkResult = await wordsApi.InsertWatermarkOnline(
    insertWatermarkRequest);

final convertRequest = ConvertDocumentRequest(
    insertWatermarkResult.document.values.first, 'docx');
await wordsApi.convertDocument(convertRequest);
import 'package:aspose_words_cloud/aspose_words_cloud.dart';

final config = Configuration("####-####-####-####-####", "##################");
final wordsApi = WordsApi(config);

final requestDocument = (await File('Input.docx').readAsBytes()).buffer.asByteData();
final requestWatermarkData = WatermarkDataText();
requestWatermarkData.text = 'This is the watermark text';
requestWatermarkData.layout = WatermarkDataText_LayoutEnum.diagonal;
final insertWatermarkRequest = InsertWatermarkOnlineRequest(
    requestDocument, requestWatermarkData);
final insertWatermarkResult =
    await wordsApi.InsertWatermarkOnline(insertWatermarkRequest);

final convertRequest = ConvertDocumentRequest(
    insertWatermarkResult.document.values.first, 'docx');
await wordsApi.convertDocument(convertRequest);
import 'package:aspose_words_cloud/aspose_words_cloud.dart';

final config = Configuration("####-####-####-####-####", "##################");
final wordsApi = WordsApi(config);

final requestDocument = (await File('Input.docx').readAsBytes()).buffer.asByteData();
final deleteWatermarkOnline = DeleteWatermarkOnlineRequest(requestDocument);
final deletedWatermark = await wordsApi.deleteWatermarkOnline(deleteWatermarkOnline);

final convertDocument = ConvertDocumentRequest(deletedWatermark.document.values.first, 'docx');
await wordsApi.convertDocument(convertDocument);
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How to remove watermark in Word using Dart

  1. Install Aspose.Words Cloud for Dart/Flutter
  2. Add a library reference (import the library) to your Dart project
  3. Configure API using your app keys
  4. Load Word document you want to remove the watermark from
  5. Create a request to remove the watermark
  6. Save the result to a convenient file format

Dart library to use watermarks in DOCX

Clone Aspose.Words Cloud SDK for Dart source code from GitHub and use it in your project. Add this dependency to your pubspec.yaml: dependencies: aspose_words_cloud: 22.4.0

Please follow these Instructions to quickly get the necessary security credentials and access our REST API.

System Requirements

Refer to the Repository Documentation to see the details.

Other supported file formats

You can add a watermark to a document in other formats:

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