Resize Image
Change image dimensions in pixels or by percentage — keep proportions, crop to an exact size, or stretch. Batch resize in your browser; nothing is uploaded.
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🔒 Your images are resized on your own device. They are never uploaded to any server.
How to resize an image
- Drop your images into the box above, or tap Choose images.
- Choose Pixels and type a width, a height or both — or pick a common size. Choose Percentage to scale everything by 25%, 50% or any amount.
- Pick how to fit: Keep proportions, Crop to fill for an exact size, or Stretch. Then download each image or all of them as a ZIP.
Keep proportions, crop or stretch?
Keep proportions fits the image inside the size you enter without distorting it. Enter only a width (for example 1200) and the height is calculated for you.
Crop to fill gives exactly the size you asked for: the image is scaled to cover the frame and the edges are trimmed evenly. Use it for profile pictures, thumbnails and anything that must be an exact size, such as 1080×1080 for Instagram.
Stretch forces the exact size and can distort the picture. It is rarely what you want for photos.
Resize for a file-size limit
Making an image smaller in pixels also makes the file smaller. If a form limits the file size in KB rather than the dimensions, use the image compressor, which can hit an exact size such as 200 KB.
What the common sizes are for
The size buttons above fill in the width and height for you. These are the sizes people ask for most often:
| Size (pixels) | Shape | Typical use |
|---|---|---|
| 1080 × 1080 | Square, 1:1 | Square social posts and many profile pictures |
| 1080 × 1350 | Portrait, 4:5 | Tall social posts that take up more of a phone screen |
| 1920 × 1080 | Landscape, 16:9 | Full HD: video thumbnails, slides, desktop backgrounds |
| 1200 × 630 | Landscape, about 1.91:1 | The preview image shown when a link is shared |
| 512 × 512 | Square, 1:1 | Avatars, app icons and small profile images |
Platforms change their recommendations from time to time. If a site states its own size, use that number — type it into the width and height boxes.
Changing the shape: what “Crop to fill” cuts off
A photo from a phone camera is usually 4:3 (for example 4032 × 3024) or 16:9. If you ask for a square, the shapes do not match, so something has to give. “Keep proportions” keeps the whole picture and returns a smaller size than you asked for on one side — a 4:3 photo resized to fit 1080 × 1080 comes out as 1080 × 810. “Crop to fill” returns exactly 1080 × 1080 and trims the extra width equally from the left and right.
Because the crop is always taken from the center, frame the subject in the middle of the photo, or crop it yourself first if the important part is near an edge. “Stretch” keeps everything but squeezes it to fit, which makes faces and circles look wrong.
Pixels, print size and dpi
Pixel dimensions are what matter on screens. For printing, the print size depends on how many pixels are spread over each inch. At 300 dpi, which is the usual target for sharp photo prints, the print size in inches is the pixel width divided by 300:
- 1200 × 1800 pixels prints at 4 × 6 inches (10 × 15 cm) at 300 dpi.
- 1500 × 2100 pixels prints at 5 × 7 inches at 300 dpi.
- 2400 × 3000 pixels prints at 8 × 10 inches at 300 dpi.
- A 2 × 2 inch photo needs 600 × 600 pixels at 300 dpi.
- A 35 × 45 mm photo needs about 413 × 531 pixels at 300 dpi.
To work out the pixels for any print size, multiply the size in inches by the dpi (2 in × 300 = 600 px). For millimetres, divide by 25.4 first: 35 mm ÷ 25.4 × 300 ≈ 413 px, and 45 mm ÷ 25.4 × 300 ≈ 531 px. Round to the nearest whole pixel.
Resizing here changes the pixels only; it does not write a dpi value into the file. Most print shops and forms only look at the pixel dimensions anyway. If you need more pixels than the original has, enlarging will not add real detail — it is better to start from a larger original.
Limits worth knowing
Very large outputs are capped: the longest side is limited to 10,000 pixels and the total to 16 million pixels, because phone browsers cannot draw larger images. If your settings go over that, the image is reduced to fit and the row shows a note. When you choose “Same as original”, PNG stays PNG and WebP stays WebP; HEIC, AVIF, GIF and BMP files are saved as JPG, since those formats are not practical to share as they are. Saving to WebP is not available in some versions of Safari.
Frequently asked questions
How do I resize an image without losing quality?
Make it smaller rather than bigger, keep proportions, and save as PNG (lossless) or JPG at quality 90 or higher. Enlarging a photo cannot add detail that was not there.
Can I resize many images at once?
Yes. Add as many as you like; every image uses the same settings, and you can download them all as a ZIP.
How do I make an image an exact size, like 1080×1080?
Enter both the width and height (or tap a common size) and choose “Crop to fill”. The image is scaled and trimmed from the center to exactly that size.
Are my images uploaded?
No. Resizing runs in your browser on your own device.
Which formats are supported?
JPG, PNG, WebP, iPhone HEIC, AVIF, GIF (first frame) and BMP. Choose “Same as original” to keep the format, or save as JPG, PNG or WebP.
Why is my resized image not the exact size I typed?
With “Keep proportions”, the image is fitted inside the box you entered, so one side can be smaller when the shapes differ. Choose “Crop to fill” to get exactly that width and height.
Does resizing make the file smaller?
Usually, yes — fewer pixels means less data. If you need to meet a limit in KB rather than pixels, use the image compressor, which aims for a target file size.
How do I resize a photo to 2×2 inches?
At 300 dpi, 2 × 2 inches is 600 × 600 pixels (2 × 300 = 600). Type 600 into both the width and height boxes and choose “Crop to fill”, so a photo that is not square is trimmed to a square from the centre. The tool changes the pixels only and does not write a dpi value, so set the print size to 2 × 2 inches when you print. Rules for passport and visa photos, such as head size and background colour, differ by country — check the official page of the office that will receive the photo.
Can I make a small image bigger?
You can enter a larger size or a percentage above 100, but the result will look soft because new pixels are estimated from existing ones. Enlarging cannot recover detail.