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Compress Image to 150 KB
Compress an image to 150 KB or less, right in your browser. No signup, no queue, 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.
What 150 KB leaves alone
150 KB is roughly where fine texture comes back. Below about 100 KB the encoder starts smoothing small repeating detail — leaves, gravel, woven fabric, distant tiles — because that is the most expensive kind of information to store.
At 150 KB those patterns usually survive. It is a good general-purpose size for a photograph that will be looked at properly rather than glanced at.
When a form allows 150 KB
- A form or gallery with a 150 KB limit
- Photographs with detailed textures you want to keep
- Portfolio and CV images viewed on a screen larger than a phone
- Documents with photographs that must stay convincing
Caps in the hundreds of kilobytes
Once a limit reaches the hundreds of kilobytes it has stopped being about saving space and started being about keeping uploads sane. Advertising portals, print shops and listing sites use this range because it comfortably holds a detailed photograph while still being small enough to move around a network without thought. In practice you will often not need the tool at all here — plenty of camera photos arrive under 350 KB on their own. When you do need it, the change is one careful re-encode rather than a squeeze.
How a file at 150 KB looks
Close to the original at normal viewing size, texture included. The remaining saving is in the least noticeable parts of the image.
A file that lands here usually keeps its original pixel dimensions and looks like the original at any normal viewing size. If your source is already under the target, the honest answer is that there is nothing to gain and the tool will say so instead of re-encoding for the sake of it.
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 150 KB?
Drop your image into the box above, check that the target reads 150 KB, and press Compress. The finished size is shown before you download, so you can see that it fits before you save it.
Will 150 KB change how my photo looks?
Barely. At this size the encoder can usually keep the full pixel dimensions and still fit inside the limit, so what changes is the file, not the picture.
Is 150 KB enough for a photo I might print?
For a small print, yes; for a large one, be careful. Printing magnifies the fine detail that compression removes first, so if you plan to print, a target in megabytes is the safer choice.
Will compressing to 150 KB ruin the quality?
Close to the original at normal viewing size, texture included. The remaining saving is in the least noticeable parts of the image.
Does 150 KB keep fine detail like leaves or fabric?
Largely, yes. This is the point in the range where texture stops being the first casualty: at 150 KB you keep most of the fine pattern that a 50 KB version would smooth away.
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 “150 KB or less” mean here?
The tool aims just below your number, never above it. If the image is already smaller than 150 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.
More free tools
More everyday tools, built the same way — free, no signup, nothing uploaded.