For websites, small size images can help the sites to load faster and with fast loading, many users can feel more convenient about it rather than waiting for websites that consumes time too long for loading because of the contents come with too large image size.

To allow the website to load fast, you should add small sizes images without damaging the image itself and this would be the right time for you to select the best compression options, especially for your JPEG images. There are two basic choices you should know that include the compression/quality of the image and the standard/optimized/progressive formats.

Actually, the both compression and quality will lead to the same result which is the more compression reduces more quality. So, you need to set the proper setting depends on the image quality or file size you desire. For example, the best ratios for proper images for websites are 50% to 85% of image quality.

Moreover, the options between standard (baseline) and optimized (baseline optimized) settings is actually giving the same image quality, the optimization of the format only comes with a 2% to 8% reduction from the actual image file size. On the other hand, although progressive format gives you the same quality as well, it provides another alternative technique like displaying the image during the downloading process.

Besides the abovementioned options, here other more called advanced options that embrace some useful programs like Corel PhotoPaint, Paint Shop Pro, and Irfan View. These programs enable you to choose the type of image subsampling (a.k.a downsampling).

Particularly, the specific ratios of subsampling based on the spec include 4:4:4 for no subsampling, 4:2:2 for standard subsampling, and 4:1:1 for worst quality. The program like Adobe Photoshop envisions this option but the adjustment runs automatically in the accordance to the quality level selected which means it puts on subsampling for both Medium and Low levels and ignore the subsampling in Maximum and High Levels.

For some reasons, the using of standard subsampling can be very sufficient for most images learning that the good ration between image quality and file size come without problems. However, particular situations show that when subsampling is not used, it makes the image quality significantly increased even though the higher compression ratio is applied.

Additionally, the JPEG images compression also meets other big issues like when the image has some portions of fine details such as the text over a uniform background or images with flat colors. It seems like JPEG images compression needs a serious consideration.