Compress JPG to 500KB
Set the size, drop your files, get them back under the limit. Everything happens on your device — nothing is uploaded.
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Why 500 KB?
At half a megabyte, compression stops being a compromise. A full-resolution phone photo reaches 500 KB at a quality level where the difference from the original is genuinely hard to see, which makes it the right target when you want a smaller file without thinking hard about what you are giving up. It is also a common ceiling for forum attachments and blog uploads.
Where this limit comes up
- Blog and article images, where page weight matters but quality still counts
- Forum and community platform attachments
- Email attachments, keeping a set of photos under a mailbox limit
- Archiving a phone camera roll at a fraction of its original size
How the exact size is reached
Most tools give you a quality slider and leave you to guess. We search instead: encode, measure, adjust, repeat — usually landing within three passes and never more than eight. The result is accepted once it sits between 92% and 100% of your target, so you get a file that is comfortably under the limit rather than one balanced exactly on it.
When quality alone cannot get there — and for the smallest targets it cannot — the image dimensions are reduced as well, and you are told exactly what the final size became. A target that is genuinely unreachable returns the closest result we managed, clearly labelled, rather than a silent failure or an oversized file.
Frequently asked questions
Will I be able to tell the difference at 500KB?
On a screen, almost certainly not. A 12 MP photo typically reaches 500 KB somewhere in the 80s on the quality scale, above the point where JPEG artifacts become visible at normal viewing distance. Printing large, or cropping in heavily, is where you would notice.
Is this a good target for archiving my photos?
It is a reasonable compromise if storage is the constraint, but understand the trade: compression is permanent, and re-compressing later compounds the loss. If these are your only copies, keep the originals and treat the 500 KB versions as convenience copies.
What if my photo cannot reach the target?
You get the closest result we can produce, clearly labelled, plus a one-tap option to allow resizing so it can go further. You never get a silent failure or a file that quietly exceeds the limit. Physics applies: a 12 MP photo cannot become 20 KB at full resolution, so very small targets mean reducing the dimensions too.
Are my photos uploaded?
No. The compression runs entirely inside your browser, so your files never leave your device. You can check that yourself in your browser’s Network tab, and the page keeps working with your network disconnected.
Nothing is uploaded — and you can check
Conversion happens on your own device, inside this browser tab. There is no server to receive your files, which is a stronger guarantee than a promise not to look at them. Open your browser's developer tools, switch to the Network tab, and convert something: you will see no request carrying your image. The page keeps working with your network disconnected.