You've got a screenshot or a photo and you only need a corner of it. Cropping is the cheapest edit there is: you throw away the pixels you don't want before you do anything else, which makes every later step — compress, convert, upload — smaller and faster.
Do it where the image already lives. The Image Cropper tool draws a crop box right on the picture; drag to draw, drag inside to move, and lock an aspect ratio like 1:1 or 16:9 if you're making a thumbnail or a social card. Export as PNG, JPEG, or WebP in one click, all in the browser.
Order matters. Crop first, because you're discarding data; then compress, because you're shrinking what's left; then convert if the format is wrong. The Image Compressor and Image Converter tools pick up where the crop leaves off — same private, no-upload loop.
A note on format: PNG keeps crisp edges and transparency, JPEG is smaller for photos, WebP is usually smaller than both for the same look. Pick after you crop so you're not compressing a frame you're about to throw away.
Quick path: open Image Cropper, draw your box (lock the ratio if needed), download, then run Compressor and Converter on the trimmed file.