tool
Image Resizer
Resize JPG, PNG, WebP, GIF, and any other images in seconds. Set custom width and height or resize by percentage while keeping your image proportions.
drag images here, or click to browse
JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, and more
Resize images to exact pixels or by percentage
Upload a JPG, PNG, WebP or other image and change its dimensions in seconds. Drag the slider to scale it down by percentage, or type an exact width and height in pixels for a specific slot, such as a 1200 × 630 social preview or a 1080 × 1080 Instagram post. Keep the aspect ratio locked to avoid distortion, compare the original and resized image side by side, and download the result. Images are processed in your browser and never uploaded.
What can you do?
- 1. Resize by percentage
Scale an image down anywhere from 1% to 100% of its original size with a slider, and see the resulting pixel dimensions update as you drag. - 2. Resize to exact dimensions
Enter a width and height in pixels to fit a specific requirement for a website, marketplace listing, form upload or social platform. - 3. Lock or unlock the aspect ratio
With the ratio locked, changing the width updates the height automatically so the image keeps its shape. Unlock it only when you deliberately want to stretch the image. - 4. Keeps your file format
JPG images stay JPG (saved at 92% quality) and PNG and WebP images keep their format, so transparency in PNG and WebP files is preserved. - 5. Before and after comparison
See the original and resized dimensions and file sizes side by side before you download.
Why resize images before uploading them?
Photos from phones and cameras are often 4000 pixels wide or more, far larger than any web page, email or form needs. Uploading them as-is slows down your website, eats into hosting and email limits, and can be rejected by upload forms with size restrictions.
Resizing to the size the image will actually be displayed at is the single most effective way to shrink an image file, because the file size drops roughly in proportion to the number of pixels. Halving both width and height leaves only a quarter of the pixels.
How to resize an image online
- 1. Upload your image
Drag and drop a file or click to browse. One image is processed at a time. - 2. Choose a size
Use the percentage slider for a quick reduction, or type an exact width or height in pixels. - 3. Keep the aspect ratio locked
Leave the lock on unless you need exact dimensions with a different shape. For a different shape without stretching, crop first. - 4. Resize and download
Click resize, check the preview and file size, then download. The file is saved with -resized added to its original name.
Common image sizes for web and social media
Use these as starting points. Platforms update their recommendations from time to time, so check their help pages for anything critical.
| Use | Recommended size (px) | Aspect ratio |
|---|---|---|
| Open Graph / link preview (Facebook, LinkedIn, WhatsApp) | 1200 × 630 | 1.91:1 |
| Instagram square post | 1080 × 1080 | 1:1 |
| Instagram portrait post | 1080 × 1350 | 4:5 |
| Instagram Story / Reels / WhatsApp Status | 1080 × 1920 | 9:16 |
| YouTube thumbnail | 1280 × 720 | 16:9 |
| Full-width website hero image | 1920 wide | Varies |
| Blog content image | 1200–1600 wide | Varies |
| Profile picture | 400 × 400 or larger | 1:1 |
If your image has a different shape from the target, use the image cropper first to cut it to the right aspect ratio, then resize it here so nothing gets stretched.
Resizing vs cropping vs compressing
| Action | What changes | Use it when |
|---|---|---|
| Resize | The pixel dimensions of the whole image | The image is simply too big for where it's displayed |
| Crop | Which part of the image is kept | You need a different shape or want to remove edges |
| Convert / compress | How the pixels are stored | The dimensions are right but the file is still heavy |
For the smallest files, combine them: crop, resize, then convert to WebP with the WebP converter.
Frequently asked questions
Will resizing reduce image quality?
Making an image smaller keeps it sharp, because high-quality smoothing is used when pixels are combined. Making an image larger than its original can't add detail that isn't there, so enlarged images look softer.
Can I make an image bigger?
Yes, by typing a width or height larger than the original. The percentage slider only scales down (up to 100%), since enlarging reduces sharpness.
How do I reduce an image's file size in KB?
Reduce the dimensions first: a 50% resize leaves only a quarter of the pixels. If the file is still too large, convert it to WebP, which is usually much smaller than PNG for the same image.
Does resizing keep EXIF data like location?
No. The image is redrawn in the browser, so camera metadata such as GPS location and camera model isn't copied to the resized file. That's a privacy bonus when sharing photos online.
What happens to animated GIFs?
Only the first frame is resized, so the animation is lost. Use the resizer for still images.
Are my images uploaded to a server?
No. Resizing happens in your browser, and your images are never sent to Buggerspot or stored anywhere.
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