Check your image before you upload

Check the size, shape, file type, transparency, safe area, and mobile crop before you upload.

Opens with X/Twitter header

Where will you upload it?

Result

Ready when your image is.

Add an image to see whether it is ready to upload.

Preview

3:1

Add an image to see the safe area and mobile crop.

White frame: safe zoneTeal frame: mobile crop risk

Safe area: keep important content inside the white frame.

Responsive crop: Different screens trim the horizontal edges.

Mobile framing

Add an image to see the mobile crop.

Checks the wide header shape, image size, file type, file size, and whether important content stays clear of mobile cropping and profile overlap.

X/Twitter headers can hide edge content on mobile, and profile/avatar areas may cover parts of the header depending on the screen.

Use the center-safe area for text and logos. The mobile crop overlay shows where header edges may be less reliable.

This helps you catch common X/Twitter header risks, but the exact crop can vary by device, layout, and future platform changes.