How to resize an image
- Drop a JPG, PNG, WebP, AVIF or GIF into the box above, choose a file, or paste one.
- Type a new width or height. With Keep aspect ratio on, the other side follows.
- Or switch to Percentage to scale by, say, 50%, or pick a preset size.
- Select Download. The file name includes the new size.
Crop, fit or stretch?
When the new size has a different shape from your image, for example a landscape photo into a square, something has to give. Turn off Keep aspect ratio and choose:
- Crop to fill fills the whole frame and trims the edges evenly. Best for social posts.
- Fit inside keeps the whole image and adds padding: transparent for PNG and WebP, white for JPEG.
- Stretch forces the exact size and distorts the image. Rarely what you want.
Common image sizes
| Use | Size in pixels |
|---|---|
| Instagram square post | 1080 × 1080 |
| Instagram portrait post | 1080 × 1350 |
| Instagram story or reel | 1080 × 1920 |
| YouTube thumbnail | 1280 × 720 |
| X (Twitter) header | 1500 × 500 |
| LinkedIn profile background | 1584 × 396 |
| Full HD | 1920 × 1080 |
| 4K Ultra HD | 3840 × 2160 |
Common uses
- Photos for social media posts. Instagram, YouTube and other sites expect particular dimensions. Pick a preset such as Instagram portrait (1080×1350) and the photo is cropped to fill the frame instead of being squashed.
- A website asks for a maximum width. Site builders, forums and online shops often recommend images no wider than a set size, such as 1920 pixels. Type the width, leave Keep aspect ratio on, and the height follows.
- Shrinking a photo to send. A camera photo is far bigger than a phone screen needs. Switch to Percentage and scale it to 50% to halve each side, which also makes the file much smaller to send.
- A form needs an exact size in pixels. Online applications sometimes ask for a photo of an exact size, such as 600×600. Turn off Keep aspect ratio, enter both sides and choose Crop to fill so nothing is stretched.