Compress a JPEG to 50 KB
A tighter JPEG-specific size target for forms and small attachments.
- Private by defaultDeleted within an hour
- Super FastProcess in seconds
- No Sign-upStart instantly
How it works
Add your images
Drag and drop, paste, or pick files. They upload over an encrypted connection.
Pick a quality or a target size
Use the quality slider, or tell it exactly how many KB or MB you need.
Download
Save each file, or grab them all at once as a ZIP.
50 KB is tight enough that this tool will often need to shrink the photo's dimensions a little, in addition to lowering quality, especially if the original came from a modern phone camera. The output stays in JPEG format throughout, which generally gives the best visual result at this size for ordinary photos.
A tightly cropped subject, such as a face for an ID-style photo, reaches 50 KB with noticeably better clarity than a busy, detailed scene, since there is less detail to preserve or throw away.
Your photo is sent over an encrypted connection and deleted within one hour, and with no sign-up needed, trying a tighter crop and recompressing to compare results is effectively free. For passport-style or ID-style photos specifically, cropping close to just the head and shoulders before compressing reaches 50 KB far more cleanly than compressing a wider, full-body frame. It also helps to know that metadata like camera details and location data is removed automatically during compression, which is generally a good thing before sharing publicly.
Pixel sizes that sit well in a 50 KB JPEG
Official photo sizes are given in millimetres, and a JPEG is measured in pixels. The link between them is the print resolution, normally 300 dots per inch. A 35 by 45 millimetre photo, the size most of Europe uses, is then 413 by 531 pixels. A two-inch square, the American size, is 600 by 600. Both fit in 50 KB as a JPEG at a quality in the high eighties, with skin and hair looking natural.
At 1000 pixels on the long side, 50 KB is still enough for a decent picture. Past that, the encoder has to work at qualities where blocks start to show.
Let the Resize panel do the arithmetic
You do not have to convert millimetres by hand. The Resize panel has a third unit next to pixels and percent, called Print. Enter the width and height in millimetres, centimetres or inches, set the resolution, and the pixel size is worked out for you, with the resolution recorded in the file. Set the fit to Fill and crop so the photo takes exactly the shape requested. The 50 KB search then runs on that final picture, which is the order you want.
Check the file the way the form will
Before uploading, look at three things in the download. The size: your file manager should report 50 KB or less. The name: it arrives as your original name with -min added, and some portals want a particular file name, so rename it if the instructions say so. The ending: it is .jpg, and if a form lists only .jpeg you can change the ending by hand without touching the content, because the two are the same format.
Frequently asked questions
Will my photo need resizing to hit 50 KB?
Often, yes, if the original is large; this tool handles that automatically when quality alone isn't enough.
Is JPEG the right format for a small size target?
Generally yes, for ordinary photos it compresses smaller than PNG at a similar visual quality.
Can I see exactly what size was reached?
Yes, the finished row always shows the final size, even if the exact target couldn't be hit.
Does cropping help reach 50 KB?
Yes, a tighter crop around the subject usually reaches small targets with better clarity.
What quality does a 50 KB JPEG end up at?
It depends on the dimensions. A 413 by 531 pixel portrait lands near 90. A 1200 by 900 photo lands around 50, where fine detail is noticeably softer.
Can I also set a minimum, such as 20 to 50 KB?
There is no minimum setting. The search already returns the largest file that fits under 50 KB, so a normal photo ends close to the top of that range.