Exactly the size you want. Set width and height directly or scale while keeping the ratio, then save as JPG, PNG, or WebP.
Click to choose a file Drag an image here
JPG, PNG, WebP, HEIC, and more
How to use it
- 1Drag in a JPG, PNG, or WebP image, or click to upload it.
- 2Enter the width (px) and height (px) you want. With “Lock aspect ratio” on, filling one side sets the other automatically.
- 3Pick the format to save in (JPG, PNG, or WebP); for JPG and WebP you can also set the quality.
- 4Hit Convert and download to save — that’s it!
Handy tips
- Keeping the aspect ratio locked stops the photo from looking squashed — enter just the width or just the height and the other follows.
- Enlarging past the original size can look blurry. When scaling up, go a step at a time and check the preview.
- For the web, shrink the width to fit the screen first, then save as WebP for a much lighter file.
What a pixel is, and why enlarging blurs it
A digital photo is a dense grid of tiny colored dots called pixels. A 1200px-wide image simply has 1200 dots across. Shrinking it merges several dots into one, so there's information to spare and the result stays crisp — which is why scaling down costs almost no quality.
Enlarging past the original does the opposite: the tool has to invent dots that were never captured, and it can only guess by blending neighboring colors. That guessing softens edges and makes things look fuzzy — the reason a 300px photo stretched to 1000px ends up smeared. For that kind of upscaling, an AI upscale tool is the better fit than a plain resize.
What are you resizing for — sizes by purpose
For in-article web photos, 1200–1600px wide is plenty. Screens may be larger, but the content column usually isn't, so going bigger just adds file weight. List thumbnails do fine at 300–600px, and most profile pictures want a square around 400px.
Print follows a different rule. On screen the width alone matters, but print depends on physical size and resolution (usually 300dpi) together — printing at about 10cm wide needs roughly 1200px or more. When in doubt, "save a touch bigger than the slot you'll use" fails least often.
Locked ratio vs. free dimensions — when to use each
Keep the aspect ratio locked by default. Fill in just the width or just the height and the other follows the original proportions, so the photo never ends up squashed. For most resizing this is all you need and the least error-prone way to work.
Turn the lock off only for the special case where both width and height must be exact — say, a banner slot fixed at 1920×600 that you have to hit regardless of the source ratio. Since mismatched proportions stretch or squash the image, it's best to crop to the target ratio first and resize afterward.
Frequently asked questions
No, your original stays as is. You just download a new resized copy, so there’s nothing to worry about. And since everything runs in your browser, the original never leaves your device.
You can upload JPG, PNG, and WebP and choose any of them when saving. Formats like HEIC are read for you too if you drop them in.
You can set width and height independently. But entering values that don’t match the original ratio can stretch or squash the photo, so only turn it off when that’s what you want.
For now it handles one at a time. For multiple images, save one and then upload the next, repeating the same steps.
Unfortunately, making an image bigger than the original can't recreate detail that was never there, so it gets blurrier the more you stretch it. If you're only going up a little, set the quality to 90% or higher and check the preview. To sharpen a low-resolution photo as it grows, an AI upscale tool gives a much more natural result.
Process them one at a time, entering the same width (px) for each. With the aspect ratio locked, photos of different heights all share a matching width, so a gallery lines up neatly. Note your size value and reuse it on the next file to move quickly.