Why a focal point beats centre-cropping
Most resizers crop from the middle. That works until your subject is not in the middle — and in real photographs it usually is not. A person standing to the left survives a 1080 × 1350 portrait crop and gets sliced out of a 1500 × 500 header, from the same source image, in the same batch.
Setting a focal point fixes that in one step. You mark the part of the image that has to survive — a face, a product, a line of text — and every output is cropped around it. Wide formats keep it centred horizontally, tall formats keep it centred vertically, and when the point sits near an edge the crop slides inward rather than running off the image.
Safe zones: the part nobody warns you about
Several platforms display less of your image than they ask you to upload, and the difference is not small.
| Where | You upload | Guaranteed visible |
|---|---|---|
| YouTube channel art | 2560 × 1440 | Central 1546 × 423 |
| Facebook page cover | 820 × 312 | Central 640 × 312 on mobile |
| LinkedIn banner | 1584 × 396 | Right of the avatar |
| X header | 1500 × 500 | Above the avatar overlap |
| Instagram story | 1080 × 1920 | Between the top and bottom UI |
YouTube channel art is the notorious one. You supply a 2560 × 1440 image, a television shows nearly all of it, a desktop browser shows a wide strip, and a phone shows only the central 1546 × 423. Anything important outside that rectangle is invisible to most of your audience. The overlay in the preview draws that boundary so you can see what actually survives.
The avatar overlaps are worth remembering even away from this tool: on LinkedIn and X, the bottom-left corner of your banner is permanently covered by a profile picture. Putting a logo there is a common and entirely avoidable mistake.
The sizes worth knowing
A handful of dimensions cover most of what anyone posts, and they have been stable for years:
- 1080 × 1080 — the square Instagram post, and a safe default almost anywhere.
- 1080 × 1350 — the 4:5 portrait post, which occupies more vertical space in a feed than a square and generally performs better for it.
- 1080 × 1920 — the 9:16 full-screen format used by stories, reels and TikTok.
- 1280 × 720 — the YouTube thumbnail, and the standard 16:9 shape generally.
- 1200 × 627 — the link-preview shape used by LinkedIn and much of the web.
Start large
Every output here is a crop and a downscale, which costs nothing in perceived quality. Upscaling does cost, and it shows. The largest target is YouTube channel art at 2560 × 1440, so a source at least that wide covers everything else with room to spare. Below that, the tool tells you which sizes would need enlarging rather than quietly producing a soft result.
Output is JPEG at high quality, which is what every platform re-encodes to anyway. Supplying a huge PNG does not survive their processing — it just takes longer to upload.
Photographs, not logos
Cropping suits photographic content, where losing the edges is expected and often improves the framing. It suits logos badly: a mark cropped to a 1500 × 500 header loses its outer shape, and a square logo stretched across a banner leaves an awkward expanse of nothing.
For brand assets, place the logo on a correctly proportioned background first, then export. The resize tool's longest-side mode is the better fit when you need to keep the whole image and simply change its scale.
Everything here runs in your browser. The image is never uploaded, there is no file size limit, and selecting a dozen sizes costs nothing but a few seconds of your own device's time.