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Compress Image to 10 KB
Compress an image to 10 KB or less, right in your browser. No account, no upload, no limit on how many files you do.
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.
What 10 KB does to a picture
10 KB is the classic ceiling for a signature upload. A signature is a dark pen stroke on white paper: two tones, long smooth curves and a lot of blank space, which is close to the best case for any image encoder.
The same is true of a thumbprint and of a scanned acknowledgement. Keep the dimensions the form asks for and the result will look like the ink it came from.
When a form insists on 10 KB
- A signature upload field capped at 10 KB
- Thumbprint and acknowledgement scans on application forms
- Small monochrome logos and watermarks
- Icon files where the image is displayed at a few dozen pixels across
Where a limit this small comes from
Limits this low are almost always about storage, not about you: a form that expects thousands of passport photos, exam applications or ID pictures has to keep every upload somewhere, and 20 KB at a time is what that budget allows. The limits are usually written as a hard maximum with no appeal, so the only useful question is what kind of picture can actually live inside it. Line art and signatures are comfortable. A photograph is not — not because the compressor is weak, but because smooth photographic detail costs bytes and there are very few of them here.
What survives at 10 KB
Invisible loss on a signature: the stroke is dark and the paper is white, so there is almost no detail for compression to damage. For a photograph, 10 KB means a thumbnail, not a portrait.
If you are working with a photograph at this size, crop before you compress. The fewer pixels you ask the encoder to describe, the more of each one it can keep, and a tight crop of a face at 20 KB looks better than a whole street at the same 20 KB.
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 10 KB?
Drop your image into the box above, check that the target reads 10 KB, and press Compress. The finished size is shown before you download, so you can see that it fits before you save it.
Does a photograph still look right at 10 KB?
Soft, yes. At 10 KB the pixel dimensions have to come down as well as the quality — no encoder can hold a full-resolution photograph in this many bytes — so expect a smaller, slightly softer picture rather than a faithful copy.
Will my signature or stamp fit in 10 KB?
Almost always, and without visible damage. A signature or stamp is dark strokes on a plain background, which is the cheapest kind of image to store. Compress it at full size rather than shrinking it first.
Will compressing to 10 KB ruin the quality?
Invisible loss on a signature: the stroke is dark and the paper is white, so there is almost no detail for compression to damage. For a photograph, 10 KB means a thumbnail, not a portrait.
Is 10 KB meant for a signature rather than a photo?
Usually, yes. A pen stroke on white paper is the cheapest thing there is to store, so 10 KB holds a signature perfectly. A photograph at 10 KB has to give up nearly all of its detail to fit.
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 “10 KB or less” mean here?
The tool aims just below your number, never above it. If the image is already smaller than 10 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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