TinyPNG shrinks PNG and JPEG images without losing quality. It employs smart lossy compression to speed up loading times on websites and blogs.
Pros
Simple and easy to use
Reduces image size without sacrificing quality
Batch processing available with paid plan
Cons
Only supports PNG and JPEG formats
File size limit of 5 MB for free plan
Batch processing only available with paid plan
My overall rating:
Kraken.io compresses images with advanced algorithms and works with JPEG, PNG, GIF, and SVG formats.
Pros
Supports a wide range of image formats
Batch processing available with paid plan
Advanced optimization options for power users
Cons
Free plan has a file size limit of 1 MB
Batch processing only available with paid plan
More complex user interface than some other options
My overall rating:
Compressor.io is an easy online optimizer for JPEG, PNG, GIF, and SVG. It shrinks images using both lossy and lossless techniques.
Pros
Supports a wide range of image formats
Batch processing available with paid plan
Simple and easy to use
Cons
Free plan has a file size limit of 10 MB
Batch processing only available with paid plan
Not as powerful as some other options
My overall rating: