Resize a photo for YouTube, from banner to thumbnail

The banner is the tricky one

YouTube asks for a 2560 × 1440 channel banner, then shows a different slice of it on every device. A TV displays the whole canvas, a desktop browser shows a wide middle band, and a phone narrows that down to a 1546 × 423 strip in the center. Only that strip is guaranteed to appear everywhere, so your channel name, tagline, and upload schedule belong inside it, with the outer regions reserved for texture and color that can vanish without cost. Crop the full 2560 × 1440 here, but design as if the center strip is the banner.

Thumbnails are judged at postage-stamp size

The 1280 × 720 thumbnail you export gets shrunk to a couple of centimeters wide on a phone screen in the suggested feed. At that scale, busy compositions turn to noise. What survives is one bold subject, a face with a readable expression, strong contrast against the background, and at most three or four large words. Squint at your crop before downloading: if you cannot tell what it is, neither can a viewer scrolling past it. Then give it a matching hook with the free YouTube title generator, since the pair gets judged together.

Profile pictures, Shorts, and where the crop happens

YouTube renders your 800 × 800 profile picture as a circle everywhere it appears, so corners get sliced off and a tightly centered subject wins. Shorts frames use the vertical 1080 × 1920 format, handy for covers you can queue alongside the video in a YouTube Shorts scheduler. And a note on privacy: this tool reads and crops your image entirely inside the browser, nothing is sent to a server, which is why there is no upload wait and no file sitting on someone else's machine.