update README.md file

Author: Hossein Mansouri

README.md

@@ -11,6 +11,7 @@ composer require hsnmsri/pixel
 ```
 
 ## Resize image tool
+Pixel PHP is a lightweight image resizing library for PHP, designed to simplify the process of resizing images while providing flexibility and ease of use.
 
 ```php
 Pixel::resizeImage(imagePath,resizedImagePath,newWidth, newHeight, createPathIfNotExists = false)
@@ -24,6 +25,7 @@ Pixel::resizeImage(imagePath,resizedImagePath,newWidth, newHeight, createPathIfN
 - Error handling with detailed exceptions.
 
 ## Change image quality tool
+Pixel PHP is a versatile image processing library for PHP, designed to simplify common image operations. The `changeQuality` function allows you to modify the quality of both JPEG and PNG images.
 
 ```php
 Pixel::changeQuality(imagePath,resizedImagePath,quality, createPathIfNotExists = false)
@@ -34,4 +36,19 @@ Pixel::changeQuality(imagePath,resizedImagePath,quality, createPathIfNotExists =
 - Change the quality of JPEG and PNG images.
 - Support for both local file paths and URLs.
 - Option to create the destination directory if it doesn't exist.
+- Error handling with detailed exceptions.
+
+## Compress Image tool
+Pixel PHP is a versatile image processing library for PHP, designed to simplify common image operations. The `compressImage` function allows you to compress and reduce the file size of both JPEG and PNG images without significantly lowering the quality.
+
+```php
+Pixel::changeQuality(imagePath,resizedImagePath,compressionLevel = 9, createPathIfNotExists = false)
+```
+
+### Features
+
+- Compress and lower the file size of JPEG and PNG images.
+- Lossless compression to maintain image quality.
+- Support for both local file paths and URLs.
+- Option to create the destination directory if it doesn't exist.
 - Error handling with detailed exceptions.