Compress an image to 75 KB
A weight that keeps pages light for readers on slow mobile connections.
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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.
75 KB is a size to choose when you are thinking about the person at the other end, on a train, in a basement or in a region with slow mobile data. A picture of this weight arrives in a second or two on a poor connection.
The compressor lowers quality in small steps and keeps the best setting that fits under 75,000 bytes. If the original is large it also reduces the pixels, because most phone screens cannot show more than a thousand across anyway.
Pages built for slow connections treat every kilobyte as a cost. A picture is worth its weight only if the reader can tell what it shows, so crop to the subject and drop what does not help.
What the reader pays for a picture
On a connection that delivers 50 KB each second, a 75 KB picture takes about a second and a half. A phone original of four megabytes takes more than a minute. Readers on pay-as-you-go data also pay in money, and a lighter page is a kindness to them.
Pixels for the phone in the hand
Most phone screens are between 360 and 430 points wide. A picture of 800 pixels across fills them with a sharp image even on a dense display. Set that width in Resize, then compress to 75 KB and the picture will look crisp where it matters.
Photos with a lot of sky or wall
Large calm areas cost very little, so landscapes with sky and wide plain walls reach 75 KB at high pixel sizes. A forest or a crowd uses the same budget on a much smaller canvas. The tool reports the final dimensions so you can see which case you have.
Using the leftover bytes well
When a simple picture finishes at 40 KB, you have room to spare. Increase the width in Resize by a quarter and compress again. The extra pixels will be spent on edges and texture, which is where a viewer notices sharpness.
Checking on a real connection
Open the compressed picture on your phone with wifi switched off and see how long it takes to appear. If it feels slow, the page has other weight that needs attention, such as scripts and fonts.
Lighter pages beyond pictures
A picture is only part of the weight of a page. Fonts, scripts and tracking code add to it as well. Once your pictures sit at 75 KB, measure the whole page with your browser's network panel, and look for the largest item. It is often not a picture.
When 75 KB is too little
Pictures that fill a whole screen need more. A photograph across a desktop monitor shows grain at 75 KB, so give it 200 KB or more and let small thumbnails stay at 75 KB.
Two tiers often work better than one size for everything.
Frequently asked questions
Is 75 KB too small for a photo gallery?
For thumbnails it is comfortable. For a full-screen view, offer a larger version when the visitor taps.
What format is best for slow connections?
WebP is usually smaller than JPEG at the same look. Keep JPEG as a fallback where you need older software to work.
Can I choose 75 KB for a PNG?
You can, but PNG of a photograph is large. The tool will have to reduce the pixels a lot to reach it.
Will the result be exactly 75 KB?
It will be at or just under 75,000 bytes.
Does removing metadata save much?
A few kilobytes at most, but at this size that is a visible share, and it is done for you.