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 Profile 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 Profile Picture size is 400 x 400 pixels, a square 1:1 frame. Drop an image on this page and the preset is already applied - there is nothing to type in. Displayed as a circle at a small size, so simple images read far better than detailed ones. Displayed small and circular, which is why wordmarks and detailed photos both fail here and simple shapes do not. The image never leaves your computer - the resize runs in the browser, which also means there is no queue and no file-size cap. If your source is a different shape, the tool shows what will be cropped rather than silently squashing it. A 1:1 target always loses something from another ratio - seeing where is the difference between a usable result and a cut-off head.
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 400 x 400 pixelsThe X Profile Picture 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
- No limit on how many images you resize.
- Runs in your browser - no upload, no account, no watermark.
- Export as JPG, PNG or WebP, whichever the platform prefers.
- Resizes to exactly 400 x 400 pixels, the current X Profile Picture size.
- Live preview, so you see the crop before downloading instead of after.
Common uses
- Preparing a batch at 400 x 400 pixels before a scheduled post.
- Fixing an image a platform rejected for being the wrong dimensions.
- Getting a correctly sized image without opening a full editor for a 30-second job.
- Resizing on a phone without installing an editing app.
- Updating an X profile photo.
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.
- Displayed small and circular, which is why wordmarks and detailed photos both fail here and simple shapes do not.
- Crop to 1:1 before resizing when the subject matters - then you choose what is lost rather than the tool.
Mistakes to avoid
- Scaling a small image up to hit the pixel count. The file gets bigger; the detail does not come back.
- Putting important detail near the edges of a 1:1 frame. Platforms crop again for thumbnails and previews.
- Re-saving the same JPG over and over. Each save loses a little more detail, permanently.
- Letting the image stretch instead of keeping the ratio. A squashed face is more obvious than a tight crop.
Frequently asked questions
400 x 400 pixels - a square 1:1 frame, 0.2 megapixels.
Drop it onto this page. The X Profile Picture preset is already selected, so it resizes straight to 400 x 400 pixels and shows the crop before you download.
No. The resize uses your own device image engine, so files never leave your computer.
Yes. It runs in the browser, so it works on iPhone and Android as well as desktop, with no app to install.
Displayed small and circular, which is why wordmarks and detailed photos both fail here and simple shapes do not.
No. It keeps the 1:1 ratio and shows what will be cropped, so you can reposition before downloading rather than finding a bad crop afterwards.
JPG for photographs, PNG when there is text or transparency, WebP when the platform accepts it and you want the smallest file.
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