Benchmarks of Image Optimisation Tools

Speeding up images often comes with a cost in picture quality and finding the right balance can be difficult.

Here we compare the results of several image optimisation tools.

means the best overall balance of size reduction and quality loss was achieved and means that the optimisation resulted in some loss in quality.

Imageimageminimage_optimImageOptimJPEGmini & ImageOptimKraken.io
png8_wolk.png1%11.19%11.39%11.39%12.06%
png8_streepjes.png80.98%81.04%81.04%81.04%81.04%
png8_skyline.png0.83%7.04%7.17%7.17%6.13%
png8_rood.png1.10%8.46%8.56%8.56%6.92%
png8_patroon.png15.26%44.79%44.90%44.90%34.01%
png8_oog.png0.87%9.12%9.31%9.31%7.85%
png8_logo.png12.04%27.66%27.34%27.34%17.97%
png8_grote-ogen.png1.35%9.02%9.26%9.26%3.15%
png8_bril.png1.52%9.49%9.89%9.89%7.03%
png8-interlaced_wolk.png0.83%26.28%26.45%26.45%27%
png8-interlaced_streepjes.png81.25%82.96%82.96%82.96%82.96%
png8-interlaced_skyline.png0.70%21.27%21.38%21.38%20.50%
png8-interlaced_rood.png0.87%27.14%27.22%27.22%25.92%
png8-interlaced_patroon.png14.03%48.87%48.97%48.97%38.89%
png8-interlaced_oog.png0.73%23.32%23.48%23.48%22.24%
png8-interlaced_logo.png8.91%46.23%45.99%45.99%39.03%
png8-interlaced_grote-ogen.png1.07%28.15%28.34%28.34%23.52%
png8-interlaced_bril.png1.23%26.48%26.80%26.80%24.47%
png24_wolk.png5.36%7.88%11.24%11.24%61.22%
png24_streepjes.png84.81%84.86%84.86%84.86%84.86%
png24_skyline.png3.81%3.72%4.63%4.87%69.83%
png24_rood.png5.03%5.73%7.78%7.78%63.74%
png24_patroon.png71.60%79.61%79.65%79.65%75.63%
png24_oog.png3.15%6.57%7.32%7.32%59.32%
png24_logo.png46.97%56.44%56.35%56.45%50.60%
png24_grote-ogen.png5.23%6.12%8.19%8.19%66.86%
png24_bril.png3.87%8.24%9.13%9.13%63.05%
png24-interlaced_wolk.png5.67%20.42%23.33%23.33%66.60%
png24-interlaced_streepjes.png86.35%87.59%87.59%87.59%87.59%
png24-interlaced_skyline.png2.85%15.41%16.52%16.52%73.52%
png24-interlaced_rood.png4.63%20.86%22.59%22.59%69.56%
png24-interlaced_patroon.png67.54%80.86%80.90%80.90%77.13%
png24-interlaced_oog.png3.08%20.75%21.39%21.39%65.49%
png24-interlaced_logo.png48.93%69.97%69.92%69.99%65.95%
png24-interlaced_grote-ogen.png4.96%21.93%23.65%23.65%72.44%
png24-interlaced_bril.png3.58%22.50%23.25%23.25%67.87%
jpeg_wolk.jpg15.10%18.88%19.31%73.88%75.75%
jpeg_streepjes.jpg52.08%53.73%57.98%57.98%57.98%
jpeg_skyline.jpg2.06%7.09%8.09%69.39%59.76%
jpeg_rood.jpg5.11%9.64%9.92%72.98%82.24%
jpeg_patroon.jpg7.71%10.99%12.43%45.49%12.43%
jpeg_oog.jpg3.42%7.77%8.41%78.12%73.15%
jpeg_logo.jpg19.79%25.31%27.92%60.80%27.92%
jpeg_grote-ogen.jpg6.01%10.71%11.16%73.96%85.97%
jpeg_bril.jpg8.27%12.32%12.59%55.98%86.46%
jpeg-progressive_wolk.jpgN/A2.54%3.07%68.62%70.87%
jpeg-progressive_streepjes.jpg1.24%4.63%13.40%13.40%13.40%
jpeg-progressive_skyline.jpgN/A0.68%1.75%67.28%56.99%
jpeg-progressive_rood.jpgN/A1.15%1.47%70.44%80.57%
jpeg-progressive_patroon.jpgN/A0.30%1.91%38.95%1.91%
jpeg-progressive_oog.jpgN/A2%2.68%76.75%71.47%
jpeg-progressive_logo.jpgN/A2.09%5.52%48.62%5.52%
jpeg-progressive_grote-ogen.jpgN/A1.51%2.01%71.28%84.52%
jpeg-progressive_bril.jpgN/A1.48%1.79%50.54%84.79%
jpeg-optimised_wolk.jpg1.01%5.41%5.92%69.54%71.73%
jpeg-optimised_streepjes.jpg1.05%4.44%13.23%13.23%13.23%
jpeg-optimised_skyline.jpg0.43%5.54%6.56%68.88%59.09%
jpeg-optimised_rood.jpg0.69%5.43%5.73%71.72%81.41%
jpeg-optimised_patroon.jpg0.44%3.99%5.54%41.20%5.54%
jpeg-optimised_oog.jpg0.63%5.09%5.76%77.48%72.37%
jpeg-optimised_logo.jpg1.68%8.45%11.65%51.96%11.65%
jpeg-optimised_grote-ogen.jpg0.86%5.82%6.29%72.53%85.20%
jpeg-optimised_bril.jpg1.04%5.41%5.70%52.52%85.39%
gif_wolk.gif0.95%9.79%8.85%8.85%76.19%
gif_streepjes.gif31.23%31.23%0.22%0.22%-30.79%
gif_skyline.gif0.83%7.26%6.44%6.44%50.71%
gif_rood.gif1.05%9.46%8.42%8.42%58.86%
gif_patroon.gif6.95%6.95%0.04%0.04%0.16%
gif_oog.gif0.90%7.45%6.55%6.55%64.48%
gif_logo.gif10.68%17.06%6.45%6.45%2.90%
gif_grote-ogen.gif1.26%11.08%9.82%9.82%57.38%
gif_bril.gif1.51%11.35%9.87%9.87%59.99%
gif-interlaced_wolk.gif1.04%1.04%0.01%0.01%73.88%
gif-interlaced_streepjes.gif31.23%31.23%0.22%0.22%-30.79%
gif-interlaced_skyline.gif0.89%0.89%0.01%0.01%47.32%
gif-interlaced_rood.gif1.14%1.14%0.01%0.01%55.08%
gif-interlaced_patroon.gif6.66%9.97%3.28%3.28%3.40%
gif-interlaced_oog.gif0.96%0.96%0.01%0.01%61.99%
gif-interlaced_logo.gif11.41%11.41%0.08%0.08%-3.71%
gif-interlaced_grote-ogen.gif1.40%1.40%0.01%0.01%52.74%
gif-interlaced_bril.gif1.66%1.66%0.01%0.01%55.61%