Image Resizer, Compressor

Choose File

Unit:

Width: px

Height: px

Quality:

If you are uploading PNGs, PNG is a lossless format. It completely ignores the Quality parameter.
If you uploads a highly compressed PNG (like a screenshot with flat colors or a transparent background) and our code converts it to a JPEG, the file size can actually increase. JPEG compression is terrible for sharp text and flat graphics, resulting in a larger file than the original PNG.
If your slider value is set to 100 (which turns into 1.0), the browser applies zero JPEG compression artifacts. This almost always results in a file size that is 2x to 3x larger than the original image. For real KB reduction, your quality slider should ideally default between 0.6 and 0.8.
It is good for reducing the size of images other than PNG files from MB to KB!