X recommends 1500 × 500 pixels for a header image, a wide 3:1 strip. Attach a photo, choose the strip you want to keep, and ToolGPT crops and resizes it for you.
A landscape photo works best, because the header is three times wider than it is tall.
Say 3:1 and which part to keep, or open Custom crop on the crop card and drag the box over the part you want.
ToolGPT writes the header at 1500 × 500 pixels. Download it and upload it in your X profile settings.
The header's 3:1 shape isn't one of the crop card's ready-made tiles, so there are two ways to get it. Ask ToolGPT for a 3:1 crop and say whether to keep the middle, the top or the bottom. Or open Custom crop on the card, where you can drag a box or type its width and height in pixels, such as 3000 × 1000.
Then ToolGPT resizes the strip to exactly 1500 × 500. Because the strip already has the right shape, nothing is stretched.
On X, your profile picture sits over part of the header, so keep faces and words away from the bottom-left corner. Check how it looks on your profile after you upload it.
The header is made in your browser and saved as a new file. Your original photo stays as it was.
X's help page recommends 400 × 400 pixels. Ask ToolGPT to crop the photo square and resize it to 400 × 400.
No. Download the file and upload it on X yourself.
No. Cropping and resizing happen in your browser.
Try it with your own file
Open ToolGPT, attach a file, and type what you want done.