Shrink JPG/PNG/WebP file size in your browser.
Choose the image, lower the quality value, and pick WebP or JPEG - at the same quality setting, WebP usually gives a smaller file than JPEG. Then download the result.
Enter the target size in KB and choose JPEG or WebP - the tool tries quality levels and keeps the best one under your target. If even the lowest quality is too big, make the image smaller with the Image Resizer first.
No - compression reduces file size, not pixels. To change width and height, use the Image Resizer (linked on this page).
No - compression runs in your browser and the image never leaves your device.