Compress a JPG Without Losing Quality
Short answer
You cannot compress a JPG with zero loss — it is lossy by design. You can lose nothing visible: at 85–92% quality the file shrinks with no on-screen difference.
Drop a JPG here
or drop your file here.
Nothing is uploaded — it stays on your device.
Runs in your browser — your file is never uploaded.
Add an image, then press "Compress image".
The honest answer first: JPEG is a lossy format, so there is no setting that compresses one with literally zero loss. Any tool promising that is either converting you to a different format or simply not telling you what it discarded.
The useful answer is that visible loss and measurable loss are not the same thing. Between roughly 85% and 92% quality, JPEG discards detail that human vision is genuinely poor at noticing — fine high-frequency variation in busy areas — while still cutting the file substantially. On a screen, at normal viewing size, the result is indistinguishable from the original.
So pick the High quality or Maximum preset if the photo matters, and Balanced if it is headed for the web. Keep your original file either way: the discarded detail is gone permanently, and if you later need to print or crop in tightly, you will want the untouched version. If you truly need lossless, PNG and WebP-lossless exist — at several times the file size.
How to compress a JPG with no visible quality loss
- 1Add the JPG. Drop it in — it never leaves your device.
- 2Pick High quality. Choose the High quality or Maximum preset.
- 3Compress. Compare the preview against the size saved.
- 4Keep the original. Save the smaller copy; archive your original.
Frequently asked questions
Is there a truly lossless way to shrink a JPG?+
Not while it stays a JPEG at a different quality. Lossless JPEG optimisers exist that re-pack the same data without re-encoding, but the savings are small — usually a few percent.
What quality counts as visually lossless?+
For most photographs, 85–92%. Below about 80% you start to see softening in detailed areas, and below 60% blocking artefacts become obvious around edges.