How to Resize an Image Online

What image resizing means

Resizing changes the pixel dimensions of an image. A 4000 x 3000 photo can be resized to 1200 x 900 for a website, 1080 x 1080 for a square post, or 1280 x 720 for a thumbnail. Smaller dimensions usually reduce file size and make images easier to upload.

Keep aspect ratio when possible

Aspect ratio is the relationship between width and height. If you change only the width and keep the aspect ratio locked, the height updates automatically. This prevents faces, products, and logos from looking stretched.

Recommended workflow

1. Upload your JPG, PNG, or WebP image.
2. Enter the target width or choose a preset.
3. Keep aspect ratio enabled unless you need an exact crop-like size.
4. Choose JPG for photos, PNG for transparent graphics, or WebP for web use.
5. Download the resized image.

Open the image resizer

Common resize targets

Different platforms ask for different dimensions. Square profile images often use 1024 x 1024 or 1080 x 1080. YouTube thumbnails commonly use 1280 x 720. Website images often work well around 1200 pixels wide, depending on the layout. FitMyPic includes presets for several of these repeated tasks.

Resize, crop, or compress?

Resizing changes the number of pixels in the image. Cropping removes part of the image to fit a shape. Compression reduces file size by changing how the image is encoded. If an upload form rejects your image because it is too large, resize first, then adjust quality if the file is still too big.

FAQ

Are images uploaded to FitMyPic?

No. The resizer works locally in your browser for normal use.

What format should I export?

Use JPG for photos, PNG for transparent graphics or screenshots, and WebP for smaller web images when the destination supports it.

Why does my image look stretched?

Stretching usually happens when the original aspect ratio is forced into a different width and height. Keep aspect ratio enabled unless the destination requires exact dimensions.