Resize Image
Set a new width and height in pixels, or scale by percentage. The aspect ratio stays locked unless you unlock it.
100% Private · No uploads 100% Private: Your Photos Never Leave Your Device
How to resize an image
Change the width and height of one photo or a whole batch, either to exact pixel sizes or by a percentage. The aspect ratio stays locked unless you choose otherwise, so nothing ends up stretched, and the resizing happens right in your browser.
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Step 1
Add your images
Drag photos onto the box or browse for them. The width and height fields fill in with the size of your first image.
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Step 2
Choose pixels or percentage
Type a new width or height in pixels, or switch to Percentage and drag the slider, for example to 50% to halve every image.
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Step 3
Keep or unlock the ratio
Leave “Keep aspect ratio” ticked to scale in proportion. Untick it only when you need an exact size and don’t mind the picture being squashed.
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Step 4
Resize and save
Press Resize. Each card shows the new dimensions and file size. Download single images or all of them as a ZIP.
Pixels or percentage: which should I use?
Use pixels when something specific asks for a size: a website theme that wants 1200-pixel-wide images, a marketplace that recommends 2000 × 2000, or an email newsletter column that is 600 pixels wide. Type the one dimension you care about and leave the other empty; it’s worked out for you.
Use percentage when you just want everything smaller (or bigger) by the same amount, for example shrinking a folder of 4000-pixel phone photos to 25% for quick sharing. Every image keeps its own shape, whatever its starting size.
How batch resizing treats different shapes
Real photo collections mix landscape, portrait and square pictures. With the ratio kept and both a width and a height filled in, each image is scaled to fit inside that box. A 1200 × 1200 box turns a landscape photo into 1200 × 900 and a portrait one into 900 × 1200, so nothing is cropped or distorted.
If you need every image to be exactly the same size, resize to fit first and then use Crop Image with a fixed ratio, or crop first and resize second. Cropping removes the excess edges instead of squeezing the picture.
Can I make a small image bigger?
Yes: percentages above 100% and pixel sizes larger than the original both enlarge the image. The tool uses smooth, high-quality resampling, but it can’t invent detail that was never captured, so a big enlargement of a small picture will look soft. Doubling the size is usually fine for screens; beyond that, expect blur.
Shrinking is where resizing shines. Halving the width and height cuts the number of pixels to a quarter, and the file size usually drops by a similar amount. We reduce large images in stages rather than in one jump, which avoids the jagged edges that quick downscaling can produce.
Quality, formats and privacy
Resized images keep their original format: a JPG stays a JPG and a PNG stays a PNG, with transparency intact. JPG and WebP results are saved at 92% quality, which is visually identical to the original for nearly every photo. iPhone HEIC photos are saved as JPG, because browsers can’t write HEIC files. If you also need a smaller file, run the result through Compress Image afterwards.
Your photos stay on your device throughout. They’re read, scaled and saved by your own browser, and nothing is uploaded. Sideways phone photos are straightened automatically before resizing, so the width you type is the width you see.
Frequently asked questions
How do I resize an image without stretching it?
Keep the “Keep aspect ratio” box ticked and type only the width or only the height. The other side is calculated to match, so the picture keeps its proportions.
Can I resize many photos to the same width at once?
Yes. Add all your photos, type the width you want and leave the height empty. Every image gets that width, and each height follows its own proportions.
What happens if I fill in both width and height?
With the ratio kept, each image is scaled to fit inside that width and height without distortion. Untick the ratio box if you want every image forced to that exact size.
Will resizing reduce the file size?
Shrinking an image almost always makes the file much smaller, because there are fewer pixels to store. Enlarging it makes the file bigger.
Does resizing lose quality?
Making an image smaller keeps it sharp at its new size. Making it larger cannot add real detail, so big enlargements look soft. Results are saved at high quality to avoid visible compression.
What is the largest size I can resize to?
Up to 32,767 pixels on a side in most browsers. On iPhone and iPad, Safari limits images to about 16.7 megapixels in total, so very large results are scaled down to fit and the tool tells you.
Are my images uploaded anywhere?
No. Resizing runs entirely in your web browser, so your photos never leave your device.