I did a quick test, here's how it went. Choose an example png(1) but had to redo with png(2) because tinypng.com won't chew a file larger than 5MB. png 2.4MB

I did a quick test, here's how it went. Choose an example png(1) but had to redo with png(2) because tinypng.com won't chew a file larger than 5MB. png 2.4MB ← original png png 2.1MB ← Trimage image compressor jpg 876.6kB ← Converseen image converter jpg 808.2kB ← jpegcrush ← Converseen image converter png 743.0kB ← tinypng.com (impressive!) webp 416.3kB ← Converseen image converter