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.
FB Square 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 Facebook Square Post size is 1080 x 1080 pixels, a square 1:1 frame. Drop an image on this page and the preset is already applied - there is nothing to type in. A square takes more vertical space than a landscape post on a phone, which is where most of the feed is read. A square occupies more vertical space in a phone feed than a landscape post, which is the whole reason to choose it over the 1200x630. No upload and no account. Your browser does the work, so a large batch is as fast as your machine rather than as fast as a server. Cropping to 1:1 from another shape removes part of the image by definition. The preview makes that visible before you download rather than after.
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 1080 x 1080 pixelsThe Facebook Square Post 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
- Live preview, so you see the crop before downloading instead of after.
- No limit on how many images you resize.
- Runs in your browser - no upload, no account, no watermark.
- Resizes to exactly 1080 x 1080 pixels, the current Facebook Square Post size.
- Export as JPG, PNG or WebP, whichever the platform prefers.
Common uses
- Preparing a batch at 1080 x 1080 pixels before a scheduled post.
- Fixing an image a platform rejected for being the wrong dimensions.
- Posting a square image that fills more of a mobile feed.
- Getting a correctly sized image without opening a full editor for a 30-second job.
- Resizing on a phone without installing an editing app.
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.
- Start from the largest original you have. Scaling up to 1080 x 1080 pixels from something smaller looks soft, and nothing undoes that.
- Crop to 1:1 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 1:1 frame. Platforms crop again for thumbnails and previews.
- Assuming another platform at the same pixel size behaves identically. A square occupies more vertical space in a phone feed than a landscape post, which is the whole reason to choose it over the 1200x630.
- Letting the image stretch instead of keeping the ratio. A squashed face is more obvious than a tight crop.
Frequently asked questions
1080 x 1080 pixels - a square 1:1 frame, 1.2 megapixels.
Drop it onto this page. The Facebook Square Post preset is already selected, so it resizes straight to 1080 x 1080 pixels and shows the crop before you download.
No. The resize uses your own device image engine, so files never leave your computer.
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.
JPG for photographs, PNG when there is text or transparency, WebP when the platform accepts it and you want the smallest file.
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.
A square occupies more vertical space in a phone feed than a landscape post, which is the whole reason to choose it over the 1200x630.
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