1. Compress images with one drag / click

  2. CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.

  3. Lossless Photo Squeezer for Mac - professional photo size compressor to reduce PNG, JPEG and GIF photos and images size with LOSSLESS quality.

  4. Optimizilla is an online image optimizer uses a smart combination of best optimization and lossy compression algorithms in order to shrink JPEG and PNG pictures to the minimum possible size while keeping the required level of quality.

  5. Free Lossless Image Format

  6. Lepton image compression: saving 22% losslessly from images at 15MB/s

  7. Play MAME on your TV Arcade Monitor or Fixed Frequency Monitor

  8. Command-line PNG optimizer.

  9. Optimize pictures without quality lossless.

  10. Compress PDF, PPT, Word, Excel, PNG, TIFF & JPEG files free online.

  11. Jpeg Resampler, nástroj pro konverzi a změnu velikosti obrázků, snadné použití, zdarma

  12. A Mac app and Chrome extension that optimizes/compresses images and PDFs.