Compress an image to 35 KB
A middle size for photos where 30 KB is slightly too tight and 50 KB too loose.
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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.
Some forms pick 35 KB as a cap, and some people aim for it because 30 KB looked too soft. Either way the goal is the same: the sharpest picture that still fits under the line.
The tool searches for the highest quality that keeps the file at or below 35,000 bytes. It only reduces the pixel dimensions if no quality setting can reach the target on its own.
If you can choose the picture, pick one with a plain background and even light. Those compress further, and the saving is spent as extra sharpness on the subject.
What fits in 35 KB
Thirty-five kilobytes is 280,000 bits. For a calm photo that supports a square of about 530 pixels, or a portrait of 480 by 580. Complicated scenes manage less, so a crowd shot may need to fall to 350 pixels a side.
Why you might choose 35 KB on purpose
A target just below the limit leaves a safety margin. Some upload pages count in kibibytes or add a few bytes of their own, and a file that is 49,900 bytes against a 50 KB cap can be rejected. Setting 35 KB where 40 KB is allowed avoids that surprise.
Checking before you upload
Look at the size in the result row and the dimensions beside it. Download the file and open its properties on your computer if the form is fussy. The number there should match what you saw on this page.
Product thumbnails and small catalogue pictures
Outside of forms, 35 KB is a reasonable weight for a product thumbnail in a catalogue or a shop listing. Pages with dozens of such pictures load quickly when each one stays near this size. Export at the largest width the thumbnail is ever shown, not at the camera original.
For products on a white background, WebP at 35 KB often looks cleaner than JPEG, because the flat white costs almost nothing and the edges stay crisp.
Choosing between two close targets
If a form says 40 KB and you are unsure whether 35 KB will look noticeably worse, try both. Run 35 KB, save the file, then run 40 KB and compare. For most portraits the gap is hard to see, and the smaller file leaves a safety margin.
Choosing between two close targets
If a form says 40 KB and you doubt that 35 KB will look much worse, try both. Run 35 KB, save the file, then run 40 KB and compare. For most portraits the gap is hard to see, and the smaller file leaves a safety margin.
That way a rejection over a few bytes never reaches you, and you still send a clean picture.
Frequently asked questions
Is 35 KB much better than 30 KB?
Five kilobytes is about 17 percent more data, which shows as smoother skin and cleaner edges on a portrait.
Can I set 35 KB for a PNG?
Yes, but PNG is lossless, so the tool can only reach the target by shrinking the pixel size. JPEG gives a gentler result for photos.
Is there a limit on tries?
No. Compress as many times as you like and compare the results.
Where is my file stored?
Uploads are processed and deleted. A result you ask to keep as a link is removed after one hour.
How do I know whether quality or size was cut?
The result row lists the final width and height. If they match your original, only quality was lowered.
Can I use this for animated pictures?
This page is for still images. Animated GIFs have their own compressor, which keeps the animation.