Compress JPG images
Shrink JPG files right here in this tab. Nothing is uploaded, there is no account, and you see the saving on every file before you download it.
- Nothing leaves your device
- No account, no email
- Free, and no watermark
Drop your files here
Tap to pick your photos
or
Choose filesUp to 30 files at a time · 60 MB per file
What compressing a JPG actually does
Compressing a JPG means decoding it and writing it out again at a lower quality setting, which throws away detail the eye is least likely to miss. The saving is usually dramatic — a photo from a phone or camera often halves at 85% quality with nothing visible lost. The one rule worth remembering is not to do it repeatedly to the same file: JPEG loss is cumulative, and after several rounds you will start seeing blocky edges and muddy colour that no amount of quality can bring back.
How to compress a JPG
- Drop your JPG files into the box above, or click to pick them.
- Pick a quality. 85% is a good default — most photos look identical and the file roughly halves.
- Hit compress. Each file is re-encoded inside your browser.
- Check the saving shown next to each file, then download it.
Compress other formats
Frequently asked questions
Are my photos uploaded anywhere?
No. The conversion runs entirely in your browser using WebAssembly and the Canvas API. Your images are never sent over the network, never touch a server, and are dropped from memory as soon as you close the tab.
How much smaller will the file get?
It depends entirely on the original. A photo straight from a camera often loses half its weight at 85% quality with no visible difference. An image that was already compressed hard has little left to give, and may barely shrink at all.
Does compressing lose quality?
Yes — JPG is a lossy format, so re-encoding discards some detail. At 85% that is invisible on screen for most images. What you should avoid is compressing the same file over and over, because the loss stacks up each time.
Is there a limit or a cost?
It is free and there is no account. The only limits are practical: 30 files at a time and 60 MB per file, so that the tab does not run out of memory on a phone.
Can I convert several files at once?
Yes — drop in up to 30 files and they are processed one after another, then downloaded individually or as a single ZIP.
Does it work on a phone?
Yes, on iOS and Android. Large batches are slower on a phone because the decoding happens on the device, so stick to smaller groups if things feel sluggish.
JPG — Joint Photographic Experts Group
JPEG has been the default photo format for more than thirty years, and that longevity is the entire point: there is no device, browser, printer or application that cannot open one. It discards detail your eye is unlikely to miss, which keeps files small — but it repeats that loss every single time you re-save.
Other conversions
Same tool, different formats.