Package detailsv1.1.0

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.

AndroidiOSWeb

pub.dev API documentation Source code

30-day downloads: 105
Likes: 29
Pub points: 150

Install package

flutter pub add watermark_unique

Package Overview

Package selection guidance compiled from public package information, community data, and project usage.

watermark_unique is a Flutter package designed to add customizable text and image watermarks to images. It allows users to adjust the watermark's position, color, background color, and padding for precise control. Ideal for apps requiring image protection or branding, it supports Android, iOS, and Web platforms. The package is lightweight and integrates seamlessly into existing Flutter projects using a simple command. Its open-source nature encourages community contributions and transparency.

Use cases

Adding copyright notices to images
Branding photos with logos
Protecting digital content from unauthorized use
Creating watermarked thumbnails
Customizing image metadata visually

Key features

Supports text and image watermarks
Configurable position and alignment
Adjustable color and background options
Customizable padding settings
Cross-platform compatibility (Android, iOS, Web)

Suitable for

Photography and media apps
Content management systems
E-commerce platforms
Digital asset libraries
Creative tools and editors

Considerations

Requires image loading before applying watermarks
Performance may vary with large images
Limited to static watermark placement
No built-in undo or edit history
Depends on external image processing efficiency

Original README

Original README snapshot from the linked source repository. Visit the repository 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
);