FREE IMAGE OPTIMIZERS
- TinyJPG | TinyPNG: Compress images.
- Compressor.io: Optimize and compress your images online.
- Kraken: Optimize your images & accelerate your websites.
- ImageOptimizer: Resize, compress and optimize your image files.
- ImageOptim: Makes images take up less disk space & load faster.
- Smush.it: Image optimizer WordPress plugin.
- Dunnnk: Beautiful mockups.
- InstaMockup: Create beautiful screenshots of your app or website.