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GitHub repositoryengineer-unknown/watermark_unique

watermark_unique

flutter package for applying a watermark to the image

watermark_unique project cover
Stars
4
Forks
4
Last push (UTC)
May 17, 2025
Project status
Active

Original README

English project snapshot. Visit GitHub for the latest content.

watermark_unique

watermark_unique is a flutter package to add text and image watermarks on an image. You can customize the watermark's position, color, background color, and padding. Check on pub.dev: https://pub.dev/packages/watermark_unique

Documentation

Features
  • Add text to image
  • Add watermark to image
  • Get result via File or Uint8List

Parameters for image that you can change

  • Text
  • Position by X
  • Position by Y
  • Text size
  • Text color (withOpacity)
  • Background text color (optional / withOpacity)
  • Padding for text if background exist (optional)
  • Quality of image with watermark
  • Image format that you will use to compress

Usage

An example of how you can add text to an image (only IOS or Android):

final image = await watermarkPlugin.addTextWatermark(
  filePath: photo!.path, // image file path
  text: 'Test watermark text', // watermark text
  x: 500, // position by x
  y: 400, // position by y
  textSize: 250, // text size
  color: Colors.purpleAccent, // color of text
  isNeedRotateToPortrait: true, // rotation image to portrait (Default: false) ONLY ANDROID
  backgroundTextColor: Colors.black.withOpacity(0.5), // color of background text (optional)
  quality: 100, // quality of image with watermark
  backgroundTextPaddingLeft: 12, // padding of background text (optional)
  backgroundTextPaddingTop: 12, // padding of background text (optional)
  backgroundTextPaddingRight: 12, // padding of background text (optional)
  backgroundTextPaddingBottom: 12, // padding of background text (optional)
  imageFormat: ImageFormat.jpeg, // image format that you will use to compress
);

An example of how you can add a watermark to an image (only IOS or Android):

final image = await watermarkPlugin.addImageWatermark(
  filePath: photo!.path, // image file path
  watermarkImagePath: watermark!.path, // watermark image file path
  x: 500, // position by x
  y: 400, // position by x
  quality: 100, // quality of image with watermark
  imageFormat: ImageFormat.jpeg, // image format that you will use to compress
  watermarkWidth: 300, // watermark image width
  watermarkHeight: 300,  // watermark image height
);

An example of how you can add text to an image and get results via Uint8List (IOS || Android || WEB):

final image = await watermarkPlugin.addTextWatermarkUint8List(
  filePath: photo!.path, // image file path
  text: 'Test watermark text', // watermark text
  x: 500, // position by x
  y: 400, // position by y
  textSize: 250, // text size
  color: Colors.purpleAccent, // color of text
  isNeedRotateToPortrait: true, // rotation image to portrait (Default: false) ONLY ANDROID
  backgroundTextColor: Colors.black, // color of background text (optional)
  backgroundTextPaddingLeft: 12, // padding of background text (optional)
  backgroundTextPaddingTop: 12, // padding of background text (optional)
  backgroundTextPaddingRight: 12, // padding of background text (optional)
  backgroundTextPaddingBottom: 12, // padding of background text (optional)
);

An example of how you can add a watermark to an image and get results via Uint8List (IOS || Android || WEB):

final image = await watermarkPlugin.addImageWatermarkUint8List(
  filePath: photo!.path, // image file path
  watermarkImagePath: watermark!.path, // watermark image file path
  x: 500, // position by x
  y: 400, // position by x
  watermarkWidth: 300, // watermark image width
  watermarkHeight: 300,  // watermark image height
);

Example screenshots

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GitHub author

Unknown Engineer ↗

Mobile software engineer

LanguagesDartKotlinSwiftRubyHTMLObjective-C

Categories

Packages published by this repository

Dependencies used

Dependency list 6 items

  • flutter{"sdk":"flutter"}
  • flutter_web_plugins{"sdk":"flutter"}
  • plugin_platform_interface^2.1.8
  • image^4.5.4
  • flutter_testDevelopment{"sdk":"flutter"}
  • flutter_lintsDevelopment^5.0.0

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