Example: an 11-megapixel camera photo at 50 KB
A 3719 × 3056 harbour photo from a Sony DSLR (public domain, Wikimedia Commons), with File size set to 50 KB.
Three photos at 50 KB
| Photo | Before | After | Pixels | Score |
|---|---|---|---|---|
| Harbour (DSLR, 3719 × 3056) | 4.97 MB | 49.3 KB | 1555 × 1278 | 61 |
| City at night (iPhone, 3024 × 4032) | 7.37 MB | 49.4 KB | 756 × 1008 | 62 |
| Rocky coast (4008 × 2015) | 1.71 MB | 48.6 KB | 1226 × 616 | 61 |
Public-domain photos from Wikimedia Commons. The score compares each result with the original at the same size: 80 looks the same at normal viewing, 60 shows small flaws up close.
When you need 50 KB
50 KB is a common limit for application photos, ID cards and profile pictures on government and university portals. A photo that size still fills a phone screen: here 1008 to 1555 pixels on the long side.
If the form also asks for exact dimensions, such as 200 × 230 pixels, crop the photo to the right shape and resize it to those pixels in a photo editor first. A photo that small usually fits well under 50 KB, so it keeps full quality instead of being squeezed to fill the limit.
How to compress an image to 50 KB
- Drop your photos above, or choose them, up to 30 at a time. File size is already set to 50 KB.
- Check each result's file size. If an image can't get under 50 KB, PicoDiet shows the smallest result it found and tells you. Open any image to compare it with the original, zoomed in.
- Download one, or all of them as a ZIP. To try another limit, pick it above the results.
PicoDiet lowers the quality first and reduces the dimensions only when a full-size image would look blotchy. Photos come out as JPEG, which most upload forms accept; images with transparency stay PNG and GIFs stay GIF. How PicoDiet picks the size
What happens to your images
Uploaded over HTTPS to the nearest of our servers, processed automatically, and deleted within 3 minutes after you finish. Never shared, sold or used for training. No account needed. Privacy policy
Questions about 50 KB
Will the file be exactly 50 KB?
A little under, usually within 3% of 50,000 bytes. That also passes forms that count a kilobyte as 1024 bytes. If the image already looks the same as the original in less, you get the smaller file.
Why did my photo get fewer pixels?
At 50 KB a full-size photo would look blotchy, so PicoDiet makes it smaller and keeps the largest size that still looks clean. The harbour photo became 1555 × 1278 at score 61.
Can I choose another size?
Yes. Pick another size above the results, or type your own under Custom, in KB or MB (such as 1.5 MB). You can also give one image a size of its own.
Does it work for PNG, HEIC and screenshots?
Yes. Photos become JPEG, including iPhone HEIC photos. Screenshots and graphics keep their format; a PNG gets fewer colours before it gets fewer pixels.
Are my images private?
Yes. Images are uploaded over an encrypted connection to the nearest of our servers, optimized, and deleted within 3 minutes after you finish. They are never shared, sold or used for training, and there is no account to sign up for. Details are in the privacy policy.