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 Header size is 1500 x 500 pixels, a landscape 3:1 frame. Drop an image on this page and the preset is already applied - there is nothing to type in. A very wide 3:1 strip - the profile picture overlaps the bottom-left corner, so keep that area clear. A 3:1 strip with the profile picture punched into the bottom-left, so the left third is effectively unusable. The image never leaves your computer - the resize runs in the browser, which also means there is no queue and no file-size cap. Feeding in a different aspect ratio means something gets cut. The preview shows exactly what, so you can reposition instead of discovering it after posting.
How to use this tool
- Drop your image inAny JPG, PNG or WebP. Nothing is uploaded - your browser reads the file directly.
- It resizes to 1500 x 500 pixelsThe X Header preset is already selected on this page, so there is nothing to type in.
- Check the preview and downloadThe preview shows the exact crop. Reposition if you need to, then save as JPG, PNG or WebP.
Key features
- Export as JPG, PNG or WebP, whichever the platform prefers.
- Runs in your browser - no upload, no account, no watermark.
- No limit on how many images you resize.
- Resizes to exactly 1500 x 500 pixels, the current X Header size.
- Live preview, so you see the crop before downloading instead of after.
Common uses
- Setting up an X (Twitter) profile.
- Getting a correctly sized image without opening a full editor for a 30-second job.
- Preparing a batch at 1500 x 500 pixels before a scheduled post.
- Resizing on a phone without installing an editing app.
- Fixing an image a platform rejected for being the wrong dimensions.
Tips for better results
- PNG keeps text and sharp edges crisp at this size; JPG is smaller for photographs.
- Check the result on the platform itself - feed thumbnails are often cropped again from the size you upload.
- A 3:1 strip with the profile picture punched into the bottom-left, so the left third is effectively unusable.
- Crop to 3:1 before resizing when the subject matters - then you choose what is lost rather than the tool.
Mistakes to avoid
- Re-saving the same JPG over and over. Each save loses a little more detail, permanently.
- Putting important detail near the edges of a 3:1 frame. Platforms crop again for thumbnails and previews.
- Scaling a small image up to hit the pixel count. The file gets bigger; the detail does not come back.
- Assuming another platform at the same pixel size behaves identically. A 3:1 strip with the profile picture punched into the bottom-left, so the left third is effectively unusable.
Frequently asked questions
1500 x 500 pixels - a landscape 3:1 frame, 0.8 megapixels.
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.
A 3:1 strip with the profile picture punched into the bottom-left, so the left third is effectively unusable.
JPG for photographs, PNG when there is text or transparency, WebP when the platform accepts it and you want the smallest file.
Yes - free, no signup, no watermark and no limit on how many images you resize. It runs in your browser, so it costs nothing to provide.
No. It keeps the 3:1 ratio and shows what will be cropped, so you can reposition before downloading rather than finding a bad crop afterwards.
No. The resize uses your own device image engine, so files never leave your computer.
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