Resize Image to Exact Pixels
Set an exact width and height in pixels, tap a preset for common sizes like 1920×1080 or 1080×1080, or scale down by percentage. The aspect ratio stays locked by default, so nothing gets stretched. It runs in your browser, so nothing is uploaded.
Common image sizes
The most-used image dimensions for social media, web, phone wallpaper, and passport photos. Upload your image above, then tap a preset or type any exact size — the tool crops to the pixels you choose. Sizes with their own page let you resize to that exact target in one step.
| Use | Dimensions | Aspect ratio |
|---|---|---|
| Instagram square | 1080 × 1080 px | 1:1 |
| Instagram portrait | 1080 × 1350 px | 4:5 |
| Story / Reel / TikTok | 1080 × 1920 px | 9:16 |
| Facebook / LinkedIn share | 1200 × 630 px | ~1.91:1 |
| Full HD / video | 1920 × 1080 px | 16:9 |
| HD / YouTube thumbnail | 1280 × 720 px | 16:9 |
| 4K desktop wallpaper | 3840 × 2160 px | 16:9 |
| Phone wallpaper (Android) | 1080 × 2400 px | 20:9 |
| Phone wallpaper (iPhone) | 1170 × 2532 px | ~19.5:9 |
| US passport / square | 600 × 600 px | 1:1 |
| Passport 35 × 45 mm | 413 × 531 px | ~7:9 |
Phone wallpaper sizes vary by model — 1170 × 2532 fits the iPhone 13 and 14, while iPhone Pro models are 1179 × 2556 and many Android phones use 1080 × 2400. Social platforms adjust their sizes occasionally too. When a size must match an exact ratio, untick "Keep the original shape" so the image fills the full target.
How to resize an image
- Upload your image (JPG, PNG, or WebP).
- Type the width you want in pixels — the height fills in automatically to keep the shape.
- Or tap a common-size preset (Instagram, Full HD, passport) or scale down by 75%, 50%, or 25%.
- Click Resize, then download your image at the new size.
Resize Image — FAQ
How do I resize an image to exact pixels?
Upload your image, type the width you want in pixels, and the height fills in automatically to keep the original shape. Then click Resize and download the result. If you need a specific height instead, type that and the width adjusts.
How do I resize an image without stretching it?
Leave the 'Keep the original shape' box ticked. Changing the width updates the height automatically so the proportions stay the same. Untick it only if you deliberately want to stretch or squash the image.
How do I resize an image to 1920x1080 or 1080x1080?
Upload your image and tap the matching preset — Full HD for 1920×1080, Instagram square for 1080×1080 — or type the exact width and height. Untick 'Keep the original shape' if your image is a different ratio and you want it to fill the exact size.
Does resizing reduce the file size too?
Usually yes — fewer pixels means a smaller file. But resizing targets dimensions, not file size. If a form asks for an exact KB limit, resize first, then use the compress tool to hit the exact number.
What image formats can I resize?
JPG, PNG, and WebP. The output keeps your original format, so a transparent PNG stays transparent. iPhone HEIC files aren't supported here yet — convert them to JPG first.
Is my image uploaded to a server?
No. This tool runs entirely inside your browser. Your image never leaves your device, so nothing is uploaded anywhere.
Need an exact file size instead?
Resizing changes the pixel dimensions. If a form asks for an exact file size — under 50 KB, for example — use the compress toolafter resizing. For a specific exam's photo specs, the exam photo guides set both at once.