Drag & drop an image here
or
PNG, JPG or WEBP — resized locally on your device
Resizing without distortion
Guide last reviewed: 28 September 2026
Every digital photo has a fixed aspect ratio — the proportion between its width and height. Change one dimension without adjusting the other to match, and the image looks visibly stretched or squashed. This tool's 🔗 lock (on by default) handles that automatically: type a new width, and the height recalculates to preserve the original proportions, and vice versa. Unlock it only if you specifically need a non-proportional size, such as fitting an exact banner or thumbnail slot that doesn't match your photo's natural ratio.
How to resize an image
- Add the image you want to resize by dragging it in or clicking to browse for it (PNG, JPG, or WEBP).
- Type an exact width or height in pixels, or click one of the 25% / 50% / 75% / 100% preset buttons to scale relative to the original.
- With the lock enabled, the other dimension updates automatically — check the live preview to confirm it looks right.
- Download the resized image in its original format.
Tips for resizing well
- Only downscaling looks reliably sharp. Making an image smaller than its original size (any of the percentage presets) always looks clean. Making it larger than its original pixel dimensions stretches existing pixels rather than adding real detail — for that, our Image Upscaler uses sharpening and noise reduction specifically to make an enlargement look better than a plain stretch.
- Know your target dimensions before you start — a social media profile photo, a website banner, or a print size each has different pixel requirements; resizing to the exact number avoids the platform doing its own (often lower-quality) resize afterward.
- Keep the aspect lock on unless you have a specific reason not to — an unintentionally stretched photo is one of the most common and most visible image mistakes.
- Resizing and cropping solve different problems. Resizing scales the whole image; it doesn't remove any content. If you need to change what's in frame — cut out a border, focus tighter on a subject — use our Image Cropper instead, or first.
Common uses
People use this to meet an upload platform's exact pixel requirements (profile photos, marketplace listings, ad creative), shrink a photo before compressing it further, prepare images for a specific print size, or simply make an oversized photo more manageable. Since resizing alone doesn't reduce file size as much as re-compressing does, pair this with our Image Compressor if your main goal is a smaller file rather than specific dimensions.
Frequently asked questions
What happens to a PNG's transparency when I resize it?
It's preserved exactly — resizing only changes the pixel grid, not the format or the alpha channel, so a transparent PNG stays transparent after resizing.
Can I resize to a size larger than the original?
You can type any number, but note that resizing up doesn't add real detail — it just stretches existing pixels to fill more space, which usually looks soft. For a genuinely sharper enlargement, use our Image Upscaler, which adds denoising and sharpening on top of the resize.
Does resizing reduce file size?
Usually, yes — fewer pixels generally means a smaller file — but the exact amount also depends on the image's content and format. If file size is your main goal rather than specific dimensions, our Image Compressor gives you more direct control over that trade-off.
Will the output keep the same file format as my upload?
Yes — a JPG stays a JPG, a PNG stays a PNG, and a WEBP stays a WEBP; only the pixel dimensions change.