
TinyPNG is a free online tool that helps to compress JPG and PNG images. Upload your photos to the website, and TinyPNG will automatically reduce the file image size without sacrificing image quality. This tool uses intelligent lossy compression techniques to optimize and load your original images faster on the web.
Pros
Very easy to use.
Supports batch compression of up to 20 images at once.
Produces high-quality, visually appealing images.
Cons
File size limit of 5MB per image.
Only supports JPG and PNG file formats.

Batch Compress JPEG is another free online tool that allows you to reduce the file size of your JPEG images. It uses a lossy compression algorithm that balances image quality with the file's original size to create smaller files that still look great. With Batch Compress JPEG, you can drag and drop your images onto the website or upload them from your computer.
Pros
Supports batch compression of up to 20 images at once.
Provides an easy-to-use interface with clear instructions.
Offers a preview of the compressed image before downloading it.
Cons
File size limit of 5MB per image.
Only supports JPG file format.

JPEG Optimizer is a free online tool that compresses JPEG images by reducing their file size without sacrificing image quality. It works by optimizing the compression of the image file to create a smaller file that still looks great. This image-processing optimization tool supports uploading multiple images at once and is easy to use.
Pros
Supports batch compression of up to 20 images at once.
Provides a clear visual representation of the amount of compression applied to each image.
Allows you to adjust the compression level to find the right balance between file size and image quality.
Cons
File size limit of 5MB per image.
Only supports JPG format.
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