Resize JPG Images
A JPG from your phone or camera is too big for the form you are filling in, the page you are building or the email you are about to send. This resizer changes the pixel size of your JPG files and gives you a JPG back. Nothing is converted and nothing leaves your device, so private photos stay private.
How to resize JPG images
- Add your JPG files by dropping them, clicking the drop zone or pasting.
- Choose the new size: a percentage, a maximum width and height, or an exact size. The quick sizes fill in common values.
- Press Resize and compare the old and new size of each file. The file type stays the same.
- Download each file or all of them as a ZIP.
When to resize, and when not to
- An upload form, shop or email service rejects the photo because it is too large or too many pixels wide.
- You want every photo in a set at the same maximum width, such as for a gallery or a product page.
- You need a small preview of a big photo and want to keep the original untouched.
- Do not enlarge a small JPG to make it look sharper. More pixels cannot bring back detail that was never captured.
What changes
- The file stays a JPG. The resizer never changes the file type; for a different format use the Image Converter.
- Every resize writes the picture out again, so JPG compression is applied one more time. Keep the quality slider high when the picture matters.
- Phone photos with a rotation tag are turned the right way up, and the tag itself is not kept.
- Camera details, location and other metadata are not written to the new file.
- Results are saved as the original name plus the new size, such as photo-1280x720.jpg, so the original is never replaced.
Resizing a JPG without making it look worse
JPG is a lossy format: each time a picture is saved, a little fine detail is thrown away. Resizing means the picture is decoded, scaled and saved again, so it gets one more round of that loss. For most photos the difference is hard to see, and shrinking helps because the small blocky marks of compression are squeezed into fewer pixels and become less visible.
The quality slider is your control over that trade. It starts at 80 and can go from 1 to 100. Raise it when the photo is important or will be viewed large, lower it when you only need a small preview. Very low settings give blocky, blurry results, so check one file before you do a whole batch.
Staying under a size limit in kilobytes
Many forms do not care about pixels at all; they cap the file size. Switch on Aim for a file size, type the limit, and the tool searches for the highest quality that still fits. If the photo is so large that even a low quality does not fit, it also reduces the pixels, and the note under the result tells you exactly what happened.
Pixels and kilobytes are related but not the same. A photo of a clear sky and a photo of a busy street can have the same width and height and very different file sizes.
Percent, maximum size or exact size for photos
Percent is the fastest way to halve a photo or shrink it to a quarter. Max size is the safest for a mixed batch, because it keeps proportions, only ever shrinks and ignores pictures that already fit. Exact size is for a fixed slot, like a square tile or a banner.
A JPG cannot be transparent, so with Exact size and Fit inside the empty bars take your background colour. White is the default, and you can pick any colour that suits the page. Fill and crop avoids bars by trimming the edges, which is often the better choice for faces near the middle of the frame.
Privacy: your files stay on your device
- The tool decodes, resizes and encodes your pictures with your browser. The files are never sent to a server.
Frequently asked questions
Will my JPG stay a JPG?
Yes. You get a JPG back with the new size. If you want PNG, WebP or another type, use the Image Converter instead.
Why does the resized photo look slightly softer?
Scaling blends neighbouring pixels, and saving as JPG again adds a little compression. A higher quality setting keeps more detail.
Can I make a JPG larger?
Yes, with Percent above 100 or Exact size. The picture will be bigger but not sharper, because the extra pixels are blended copies of the existing ones.
How do I get a JPG under a size limit?
Turn on Aim for a file size, enter the limit in KB and resize. The tool picks the best quality that fits and shrinks the pixels only if it must.
What colour are the bars with Fit inside?
Your chosen background colour, white by default, because a JPG has no transparency to leave the bars empty.