Aspect Ratio Crop

READY-TO-USE IMAGE TOOL

YouTube thumbnail size crop tool.

YouTube thumbnail size uses a 1280 × 720 pixel frame (16:9). The calculator and local image crop below are already set to that shape, so you can enter dimensions or choose an image immediately.

Common size as of 2026-09; platform display and upload rules can change. Check the platform before publishing. Your image stays in this browser.

01 / CALCULATE

Find the ratio

Enter your pixel dimensions. Whole-number dimensions reduce to an exact ratio.

REDUCED RATIO16:9

Match a ratio

Set one dimension to find the other without stretching.

Matching height: 720 px
Matching width: enter a height

Calculated values may have fractional pixels. Round to whole pixels when exporting a raster image.

02 / CROP LOCALLY

Frame your image

Choose an image or drop it below. Drag the frame to position your crop; arrow keys move it too.

or drop a file here

No upload. The image never leaves your device; nothing is saved by this site.

03 / WORKED EXAMPLE

Put this frame to work

A 1920 × 1080 screenshot scaled by two thirds becomes 1280 × 720 with its 16:9 framing intact. If the source is square, crop first rather than stretching faces.

Resizing preserves a source image's shape; cropping removes edges to fit a different one. Download the crop as PNG or JPEG above.