flutter_assets_compresser 0.0.6

A command-line Dart script to recursively scan a directory for JPG and PNG image files, display them in a tree structure, and then resize and compress them to a specified output directory.

Image Compressor Script

A command-line Dart script to recursively scan a directory for JPG and PNG image files, display them in a tree structure, and then resize and compress them to a specified output directory.

Features

• Recursively scans a source directory (defaults to assets/).
• Identifies .jpg, .jpeg, and .png image files.
• Presents the found image files in a clear tree-like structure.
• Requires user confirmation before starting the compression process.
• Resizes images to a specified width and height.
• Compresses JPG images with a configurable quality setting.
• Supports PNG images (resized, but PNG is a lossless format, so quality setting applies only to JPG).
• Saves compressed images to an output directory (defaults to output/), preserving the original subfolder structure.

Getting started

Prerequisites

• Ensure you have the Dart SDK installed.
• This script requires the image and path packages.

Installation

1. Save the provided Dart code (from the previous turn) into a file, e.g., compress_script.dart, within your project directory (like the root of your Flutter project if you intend to compress its assets).

2. Create a pubspec.yaml file in the same directory if you don't have one.

3. Add the necessary dependencies to your pubspec.yaml:

   dependencies:
     image: ^4.1.7 # Use the latest version
     path: ^1.8.0  # Use the latest version
   

4. Run dart pub get in your terminal from the directory containing pubspec.yaml and compress_script.dart.

Usage

1. Run the script using the Dart VM:

   dart run flutter_assets_compresser
   

2. The script will scan the directory specified by the inputDir variable (defaulting to ./assets).

3. It will print a tree structure showing all found JPG and PNG image files.

4. You will be prompted to confirm if you want to compress the found images.

5. Type y and press Enter to proceed with the compression. Type anything else to cancel.

6. The compressed images will be saved to the directory specified by the outputDir variable (defaulting to ./output), maintaining their relative paths from the input directory.

You can modify the inputDir, outputDir, width, height, and quality variables directly in the compress_script.dart file to customize the behavior.

// Example configuration section in compress_script.dart
void main(List<String> arguments) async {
  // --- Configuration ---
  const String inputDir = 'assets'; // Directory to scan
  const String outputDir = 'compressed_images'; // Directory to save output
  const int quality = 75; // Desired JPEG quality (0 to 100)

  // ... rest of the script
}