Resize Image

Resizing an image scales it down to the pixel dimensions you actually need — a 6000-pixel camera photo is wasted on a website that displays it at 1920. Enter the longest side you want, add up to 20 images, and each one is scaled to fit while keeping its proportions exactly. Images are never enlarged, because upscaling cannot add detail that was never captured. The format is preserved, so a PNG comes back a PNG and a JPG a JPG, and every file is re-encoded once at high quality as part of the resize. The work happens inside your browser, so nothing is uploaded.

How to use it

1. Add your JPG, PNG or WebP images.
2. Enter the longest side in pixels — 1920 suits most web uses.
3. Resize, then download the image or the zip of resized images.
4. Always resize from the original file rather than from a copy you resized earlier — each pass through a lossy format costs a little quality that cannot be recovered.

Examples

• A 6000×4000 photo at longest side 1920 becomes 1920×1280.
• A batch of portrait and landscape photos all fit within 1080 pixels, each keeping its own shape.
• A portrait 4000×6000 at longest side 1920 becomes 1280×1920 — the longest side is whichever one is longer, not the width.
• A file already smaller than the size you enter keeps its dimensions, but it is still re-encoded, so the result is not byte-identical to the original.

Frequently asked questions

Will resizing distort my image?

No. The image scales so its longest side fits the size you enter and the other side follows in proportion, so nothing is stretched or squashed — a landscape photo stays landscape and a portrait stays portrait. It is also why there is no field for width and height separately: any tool that lets you type two independent numbers has to either squash the picture or crop part of it away, and this one does neither. If you need an exact frame — a square profile picture out of a rectangular photo — that is a crop, not a resize.

Can I make an image bigger?

No — this tool only scales down. Enlarging a photo cannot add detail that was never captured; it produces a larger, softer file in which the extra pixels are a guess about what was probably there. If an image is already within the size you enter, its dimensions are left alone, though it is still re-encoded — so keep the original if you may need it untouched.

What size should I pick?

1920 pixels suits full-width website images and presentations; 1080 works for social posts; 800 or less suits email and thumbnails. When in doubt, go with the size the destination asks for — forms and platforms usually state their limit.

Are my images uploaded to a server?

No. The scaling is done by your browser's own image engine on your device, so the photos never leave your computer or phone. Even very large images are processed locally.

Does resizing lose quality permanently?

Yes, and there is no undo hidden inside the file. Scaling down discards pixels — several are averaged into one — and that detail cannot be recovered by scaling back up afterwards. JPG and WebP are lossy on top of that, so each re-encode costs a little more. The practical rule is to keep the original somewhere and always resize from it rather than resizing a resize: one pass from the source is far better than three passes from copies.

My upload form wants 300 DPI — what size is that?

DPI on its own is not a size. It is a note stored in the file about how large the picture should print, and it changes nothing about the pixels. What matters is the pixel count: a 4×6 inch print at 300 DPI needs 1200×1800 pixels, and an image with those pixels prints identically whether its DPI tag reads 72 or 300. Work out the print size in inches, multiply each side by 300, and enter the larger of the two numbers here.

Why is my resized file still large?

Because dimensions and file size are different problems. Removing pixels usually shrinks a file a great deal, but the format is preserved here — and PNG is lossless, so a photograph saved as a PNG stays heavy however small you make it. If file size is what you are chasing, compress the image or convert it to JPG or WebP. Where there is a hard limit such as 100 KB, the compress-to-size tool aims at the number directly instead of leaving you to guess.