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Compress Image to 600 KB
Compress an image to 600 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.
At 600 KB you are hardly squeezing anything
600 KB is a size for collections rather than single pictures. When you are uploading a set of photographs and the platform caps each file, consistency matters more than squeezing any one image to the smallest possible size.
Photographs at 600 KB hold up to almost any on-screen use, so this is the setting to leave in place while you work through a batch.
Generous caps, and when you meet them
- Photo galleries and portfolios that cap each file
- Uploading a set of product or property photographs
- Family photo archives being moved to a new service
- Any batch where you want one predictable ceiling
Why a limit would sit this high
A ceiling of several hundred kilobytes is a courtesy limit, not a constraint. Print services, estate agents and camera-friendly platforms set it to stop someone uploading a 40 MB file over a phone connection, while still accepting a photograph with enough detail to work with. Files in this range are usually re-encoded once at high quality rather than compressed in any meaningful sense, and the metadata a camera writes into them — lens, location, timestamps, an embedded preview — is a large part of what disappears.
The result at 600 KB
Visually lossless for on-screen use across this whole range. At 600 KB the encoder is removing redundancy, not recognisable detail.
Expect the result to be visually indistinguishable from your original. If your file is already under 600 KB, the tool hands it straight back rather than re-encoding it and losing quality for nothing.
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 600 KB?
Drop your image into the box above, check that the target reads 600 KB, and press Compress. The finished size is shown before you download, so you can see that it fits before you save it.
Is 600 KB going to noticeably degrade my photo?
No. At this size you are inside the range where a single high-quality re-encode is invisible at normal viewing size, and much of what you save is camera metadata rather than picture detail.
Why compress at all if the limit is this generous?
Because the limit is still a limit. A modern phone photo can exceed 600 KB easily, and platforms that state a maximum reject anything above it rather than shrinking it for you.
Will compressing to 600 KB ruin the quality?
Visually lossless for on-screen use across this whole range. At 600 KB the encoder is removing redundancy, not recognisable detail.
Is 600 KB a good ceiling for a photo library?
Yes, and it is a common choice for galleries where consistency matters more than ultimate size. Every image lands in a predictable band, which keeps a collection of thousands looking even.
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 “600 KB or less” mean here?
The tool aims just below your number, never above it. If the image is already smaller than 600 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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