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Compress Image to 35 KB
Compress an image to 35 KB or less, free and unlimited, entirely on your own device. No signup and no upload.
No account · No daily limit · No card · Nothing to cancel
Full pixel size keptRe-encodes only if the file gets smaller Nothing is ever made bigger
The encoder works at a quality that does not show, and stops there. You do not pick a number.Your images are processed by your own browser. Nothing is uploaded, there is no account, and there is no daily limit.
Compress to another size
Every limit is different. These run on the same engine, so switching is instant.
The trade you are making at 35 KB
35 KB sits between two familiar ceilings: the 30 KB that exam forms often ask for and the 40 KB that ID photo fields prefer. Some forms state it outright.
It is also the point where cropping starts to matter more than compression. Below about 35 KB, the difference between an acceptable portrait and a poor one is usually how much of the frame was background.
Forms that stop at 35 KB
- A form that states a 35 KB limit
- Exam and registration photo fields slightly larger than 30 KB
- ID photos where you want a little more detail than 30 KB gives
- Signatures and small graphics with a 35 KB cap
Why 35 KB turns up as a ceiling
Ceilings in the tens of kilobytes are usually old limits that were never raised: a system built when a 28.8k modem was normal, or a template sized for a thumbnail that is now shown larger. They are common on scholarship portals, job application forms and government paperwork. Because the limit is fixed and usually checked automatically, the sensible approach is to decide what kind of image you have before choosing a format. A scan or a signature has large areas of one colour and slips under 35 KB comfortably. A photograph does not, and needs its width and height reduced to get there.
Photographs, scans and signatures at 35 KB
Acceptable for a tight head-and-shoulders crop, soft for a full-frame portrait. Cropping closer before you compress is the single biggest improvement available at this size.
The difference between a good and a bad result at this size is nearly always the crop, not the encoder. Fill the frame with your subject and the same 35 KB buys you far more detail than it does for a wide shot with wasted background.
How it works
- Add your imageDrop it above, or choose a file from your device.
- Choose howSmallest file keeps the best quality and takes no number, or set the exact size your form asks for. Nothing is compressed until you press Compress.
- Compress and downloadPress Compress, and the finished size is shown before you save, so there are no surprises.
Questions
How do I compress an image to 35 KB?
Drop your image into the box above, check that the target reads 35 KB, and press Compress. The finished size is shown before you download, so you can see that it fits before you save it.
Can a photograph keep its full size at 35 KB?
Normally no. Getting a full-resolution photograph under 35 KB means dropping the quality far enough to look damaged, so the tool reduces the width and height instead — a smaller picture that still looks sharp beats a big soft one.
Is 35 KB enough for a scanned document?
For a signature, a stamp or a single line of print, yes. For a full page of dense text it is tight: text is high-contrast detail, which costs bytes, so keep the scan at its full dimensions and accept slight softening of the strokes.
Will compressing to 35 KB ruin the quality?
Acceptable for a tight head-and-shoulders crop, soft for a full-frame portrait. Cropping closer before you compress is the single biggest improvement available at this size.
What is the difference between a 30 KB and a 35 KB result?
Very little on screen, and that is the point of choosing 35: those extra five kilobytes go into the smooth gradients of a face, so skin stops showing steps of colour. If you are between two limits, take the larger.
Which format should I choose — JPG, PNG or WebP?
Photos: JPG or WebP, because they are built for photographs. Logos, signatures, screenshots and anything with flat colour: PNG, so the sharp edges stay sharp. If you are not sure, leave it on “keep original format”.
What does “35 KB or less” mean here?
The tool aims just below your number, never above it. If the image is already smaller than 35 KB it is left untouched rather than re-encoded and degraded.
Is this free? What is the catch?
There isn’t one. The compression runs inside your browser using technology already built in, so there is no server doing the work and nothing to charge for. This page shows ads, and that is the whole business model.
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