Image Resizer

Resize any image to exact pixel dimensions or a percentage, free and instantly in your browser.

Upload an Image

Click to browse or drag & drop a JPG, PNG, or WEBP file

.JPG .PNG .WEBP
Resized preview

How to Resize an Image

Get the exact dimensions you need in 3 steps

1. Upload Image

Choose any JPG, PNG, or WEBP image from your device.

2. Set Dimensions

Enter exact pixels or pick a quick percentage preset.

3. Download

Get your resized image instantly in the format you choose.

The Complete Guide to Resizing Images Online

Resizing is different from compressing: compression shrinks file size while keeping the same pixel dimensions, while resizing changes the actual width and height of the image. Both matter for the web, but resizing is what you need when a platform has a strict dimension requirement — a profile picture, a banner ad slot, or a product thumbnail grid.

Aspect Ratio Explained

Aspect ratio is the relationship between width and height. Locking it while resizing prevents your image from looking stretched or squashed — only the overall size changes, not the proportions.

Common Image Size Requirements

  • Social media profile picture: Typically a square, e.g. 400×400px.
  • Website banner: Often a wide format like 1200×400px.
  • E-commerce thumbnail: Commonly a square like 800×800px for consistent product grids.
  • Blog featured image: Frequently 1200×630px, which also matches the ideal social share preview size.

Resizing vs. Cropping

Resizing scales the whole image up or down while keeping every part of it visible. Cropping instead cuts away parts of the image to change its shape or focus. If you need an exact width and height without losing any content, resize; if you need to remove unwanted edges or change to a specific shape, crop first.

Frequently Asked Questions

Shrinking an image rarely causes visible quality loss. Enlarging it significantly beyond its original size can make it look soft or blurry, since no new detail can be created.

Resizing changes pixel dimensions (width/height). Compressing keeps the same dimensions but reduces file size by optimizing the image data.

Yes, in almost all cases, to avoid a stretched or squashed look. Only disable it if a platform specifically requires a non-proportional size.

No, resizing happens entirely in your browser using the canvas API — your image never leaves your device.

Use JPG for photos, PNG if you need transparency, and WEBP for the smallest file size at good quality.