About the Image Resizer
The Image Resizer changes the dimensions of your photos and graphics without uploading them anywhere. Enter an exact width and height in pixels or drag the scale slider to shrink or enlarge by percentage. With Lock aspect ratio enabled, changing one side updates the other automatically so your image never looks stretched.
Resizing is essential for faster websites (large images slow down pages and hurt SEO), meeting upload limits on job portals, government forms and marketplaces, and preparing images for social media, email newsletters or e-commerce listings. You can also convert the format while resizing, exporting as PNG, JPG or WEBP. High-quality smoothing is used to keep edges crisp.
Common sizes and how to reach them
| Use | Size in pixels |
|---|---|
| Blog or website photo | 1200 wide (height automatic) |
| Instagram square post | 1080 × 1080 |
| Instagram portrait post | 1080 × 1350 |
| YouTube thumbnail | 1280 × 720 |
| Email signature logo | about 300 wide |
| Online store product photo | 1000–2000 square |
Resize without stretching
Keep Lock aspect ratio on and change only the width. If the target shape is different from your photo, for example a wide photo that must become square, crop it first with the Image Cropper and then resize.
Making images bigger
Enlarging cannot add detail that was never captured. Going from 800 to 1000 pixels usually looks fine, but doubling a small image makes it soft. Start from the largest original you have.
Tip: smaller dimensions also mean a smaller file. If you need to hit a size in KB, resize first and then use Compress Image to KB.
How to use the Image Resizer
- Drop an image into the upload area, click to browse, or paste it from your clipboard.
- Type a new width or height, or use the scale slider.
- Choose the output format: PNG, JPG or WEBP.
- Click Download to save the resized image.
Frequently asked questions
Are my images uploaded to a server?
No. Resizing is done with the HTML5 canvas inside your browser, so your photos never leave your device.
Will resizing reduce quality?
Making an image smaller keeps it sharp. Enlarging beyond the original size can look soft because new pixels have to be estimated.
What is the maximum size?
You can output images up to 10,000 pixels on each side, depending on your device memory.
