Image Resizer
Resize images to any dimension
100% free. Runs entirely in your browser - your files and data never leave your device and nothing is uploaded to any server.
X Header selected — upload an image to apply it.
Drag & drop files here
or browse to upload
Supports PNG, JPG, WebP up to 20MB
Processed in your browser - your file never leaves this device.
About this tool
The X (formerly Twitter) header is a wide 1500 by 500 banner (3:1) across the top of your profile. Your profile picture overlaps its lower-left area, and phones show a slightly different crop than desktop, so the right two-thirds is where your message is safest. The preset crops to that 3:1 strip; with the profile picture punched into the bottom-left, the right two-thirds is where your message belongs.
How to use this tool
- Plan for the profile pictureLeave the bottom-left area clear - your avatar sits on top of it.
- Position the bannerDrag the image so text and logos sit in the centre-right of the 3:1 frame.
- Upload and check mobileDownload, set it as your header and check the slightly different phone crop.
Layout for the X header
Treat the left third as background that the profile photo may cover, and centre your text slightly right of middle. Keep a margin at the top and bottom, which can be trimmed on some screens. A short tagline, launch date or URL usually works better than a long message.
What to put on an X header
A header works best with one clear idea: your name or brand, a short line about what you do, or a current launch or campaign. Keep it simple, because it is seen at different widths on desktop and phones, and the profile picture always covers the lower-left area.
Update the header for launches, events or seasons - it is the largest image on your profile and the first thing visitors see after your name.
Key features
- Headers sized for X with the avatar overlap in mind.
- Good for personal branding, launches and campaign headers.
Common uses
- Personal brand headers.
- Product launch announcements.
- Event or campaign headers.
Tips for better results
- Keep the lower-left clear.
- Use short text.
- Leave top and bottom margins.
Mistakes to avoid
- Logos hidden by the profile picture.
- Long paragraphs on the banner.
Frequently asked questions
1500 x 500 pixels (3:1).
On the lower-left of the header.
Yes, slightly - keep important content centred.
A 3:1 strip with the profile picture punched into the bottom-left, so the left third is effectively unusable.
Drop it onto this page. The X Header preset is already selected, so it resizes straight to 1500 x 500 pixels and shows the crop before you download.