Images or photos are very important for visual representation. Whether you're running a website or using social media or running an ecommernce website, end user loves images - no matter which type of device they're using. If a website uses images of large size or its pages takes too long to load because the image files are too big, most of the end users will be immediately turned off. This is typically called as bounce rate. Conversely, quality images that load quickly can enhance a brand's reputation. Therefore, it is important to find a right balance between quality and size.
It is expremely important that you understand the tricks of image sizing and editing. There is no need to be a graphic design expert for achieving the required objective.
What is photo compression? How to compress images?
Photo compression is the process by which you can reduce the space occupied by the photo. The compression process is dependent on the format of the image.
- JPEG Images
JPEG images do not store the original value of the colors. Rather, the values of the colors are divided by a factor. The division factor is stored in a table called quantization table. The details of the quantization table is saved in the jpeg file. During the compression process the values of quantization table i.e. division factor is updated with higher values. This will reduce the value of the color space which needs to be stored. Hence, it will reduce the space of jpeg file.
- PNG Images
Most of the PNG images are 32 bits. During the compression process the bits are reduced from 32 --> 8. This will reduce the amout of data which needs to be stored.
Does photo compression reduce image quality?
Yes. However, the following are important factor to note.
- A decrease in quality does not necessarily means any distinct visual impact. This will be dependent on the usage of photo or image.
- After every compression process it is important to do a visual check.
- Our website uses multiple algorithms to ensure there is no visual impact.
- JPEG format is already compressed.
How to increase image quality?
No. It is not possible to increase the quality of images. This is applicable to any format like jpeg or png or svg. There are many AI solutions, but none of them are good enough.
Can i uncompress a JPEG Image?
No. It will not be possible. JPEG compression is a one way process. Therefore, it is always advised to keep the orginal copy for comparision. You should delete the original copy only after you are sure that the compressed image is ok for further use.