Merge pull request #19 from koji-1009/chore/doc

doc: Update

README.md

@@ -1,5 +1,7 @@
 # platform_image_converter
 
+[![pub package](https://img.shields.io/pub/v/platform_image_converter.svg)](https://pub.dev/packages/platform_image_converter)
+
 A high-performance Flutter plugin for cross-platform image format conversion and resizing using native APIs on iOS, macOS, Android, and Web.
 
 ## Features
@@ -88,8 +90,10 @@ static Future<Uint8List> convert({
 **Returns:** `Future<Uint8List>` containing the converted image data.
 
 **Throws:**
-- `UnsupportedError`: If the platform or format is not supported.
-- `Exception`: If conversion fails.
+- `UnsupportedError`: If the platform or output format is not supported.
+- `ImageDecodingException`: If the input image data cannot be decoded.
+- `ImageEncodingException`: If the image cannot be encoded to the target format.
+- `ImageConversionException`: For other general errors during the conversion process.
 
 ### `OutputFormat` Enum
 

lib/platform_image_converter.dart

@@ -45,7 +45,7 @@ class ImageConverter {
   /// - [UnsupportedError]: If the platform or output format is not supported.
   /// - [ImageDecodingException]: If the input image data cannot be decoded.
   /// - [ImageEncodingException]: If the image cannot be encoded to the target format.
-  /// - [ImageConversionException]: For other general errors during the conversion process.  ///
+  /// - [ImageConversionException]: For other general errors during the conversion process.
   /// **Example - Convert HEIC to JPEG:**
   /// ```dart
   /// final jpegData = await ImageConverter.convert(

lib/src/image_converter_platform_interface.dart

@@ -11,6 +11,7 @@ import 'package:platform_image_converter/src/output_resize.dart';
 /// **Implementations:**
 /// - [ImageConverterDarwin]: iOS and macOS using ImageIO
 /// - [ImageConverterAndroid]: Android using BitmapFactory
+/// - [ImageConverterWeb]: Web using Canvas API
 abstract interface class ImageConverterPlatform {
   /// Converts an image to a target format.
   ///