About the Image Resizer
Resize one image or a whole batch to an exact width, height, percentage or bounding box while keeping the aspect ratio. Images are processed in your browser and never uploaded.
Key features
- Resize by width, height, percentage, exact size or fit-in-box
- Keeps the aspect ratio unless you choose exact size
- Batch resize many images at once
- High-quality multi-step downscaling
- Save as JPG, PNG or WebP with adjustable quality
- Private: images never leave your device
Resize images in seconds
Make photos the right size for websites, email, social media, online forms or printing. Drop one or many images, choose how to resize them, and download the results individually or as a ZIP.
Resize modes
| Mode | What it does | Example |
|---|---|---|
| Width | Sets the width, height follows | 4000 × 3000 → 1200 × 900 |
| Height | Sets the height, width follows | 4000 × 3000 → 1600 × 1200 at 1200 px high |
| Percentage | Scales both sides | 50% of 4000 × 3000 → 2000 × 1500 |
| Fit inside box | Largest size that fits within W × H | 1080 × 1080 box → 1080 × 810 |
| Exact | Forces both sizes (may stretch) | → 800 × 800 |
Recommended sizes
| Where | Size (px) |
|---|---|
| Website hero image | 1920 wide |
| Blog post image | 1200 × 630 |
| Instagram post | 1080 × 1080 or 1080 × 1350 |
| Instagram / TikTok story | 1080 × 1920 |
| X (Twitter) post | 1600 × 900 |
| YouTube thumbnail | 1280 × 720 |
| Email attachment | 1024–1600 wide |
| Passport photo (US) | 600 × 600 |
Smaller files
Resizing is the most effective way to shrink a photo: halving the width and height cuts the pixel count by 75%. For even smaller files, follow up with the Image Compressor or save as WebP.
Related tools
Crop an image to change its framing, rotate or flip it, or convert formats with JPG to WebP.
How to use the Image Resizer
- Drag and drop your files into the upload area, or click Choose files.
- Set any options, such as quality, page size or page ranges.
- Click the convert button. Processing happens right in your browser.
- Download each result individually, or all of them as a ZIP.