Very much so. I-JPEG yi-codec efanayo ne-JPG phantsi koluhlu olude — i-DCT efana ne-pipeline, i-quantization table efana ne-quantization table, akukho nto malunga nee-pixels ezitshintsha ngegama lefayili. That determines both the headroom available and whether the saving costs you anything in fidelity.
Yintoni impazamo eqhelekileyo xa uxinzelela JPEG images?