FREE · NO SIGNUP · NO UPLOAD
Resize an image
The right dimensions, without guesswork. Resize a picture in pixels and keep its proportions intact.
Your image
LOCAL PROCESSINGLive preview
Choose your crop
Drag on the preview for a custom crop. The shaded edges will be removed.
Set the pixel dimensions
Dimensions are shared with the download controls below.
Presets set the longest edge. Unlocking the ratio can stretch the image.
Say something
With Text selected, drag on the picture to position your caption.
Give it an edge
Frames are drawn inside the output size. PNG or WebP keeps any transparent corners.
Remove a background colour
Best for plain backdrops. Connected removal starts at the picked pixel, or image corners. Use the brush for other areas.
Orientation & tone
Choose the file that fits
Use JPG or WebP quality to reduce file size. PNG is lossless. The actual file size appears after you download.
A conversion does not recover detail already lost from the source. Transparent pixels become white in JPG.
Compare JPG, PNG and WebP →THREE SMALL STEPS
How to resize an image.
- Open a JPG, PNG or WebP image.
- Enter a width or height, or choose a longest-edge preset.
- Keep the ratio lock enabled and download your resized file.
Fit the space. Keep the proportions.
Pixel dimensions describe how many pixels make up an image. Reducing them can make a photograph easier to share or help it fit a website layout. This editor shows both the original dimensions and the dimensions of the file you will download.
The ratio lock changes the other dimension automatically. A 1,200 × 800 image becomes 600 × 400 when its width is halved. Unlocking the ratio allows a different shape, but stretches the image; use crop or padding when you want a different shape without distortion.
Enlarging an image increases its pixel count without recovering additional real detail. For large uploads the editor creates a bounded working copy to keep the browser responsive and tells you its size. The exported file can be up to 4,096 pixels on either side.
A FEW USEFUL DETAILS
Before you download.
Does resizing reduce file size? +
It often does, but the final size also depends on format and quality. The download message reports the actual generated file size.
Can I keep the entire image in a square? +
Yes. Use Fit without cropping to add blur, colour, mirror or transparent padding.
Will enlarging make a photo sharper? +
No. This browser tool resamples pixels; it does not invent new detail or use AI upscaling.
ANOTHER WAY TO WORK
Keep creating.
BUILD SOMETHING BIGGER
Like the name?
uncrop.si is available for acquisition.