Compress JPEG images
Shrink JPG/JPEG file size with an adjustable quality slider — right in your browser.
How compressing JPEG works
- 1
Add a JPEG
Drag & drop or browse — JPG/JPEG images.
- 2
Set a quality
Pick a preset or fine-tune the quality slider.
- 3
Compress on-device
Real lossy re-encoding — nothing is sent anywhere.
- 4
Download
Save the compressed JPEG, one at a time or all together.
Quality vs. file size
JPEG compression is lossy — the quality slider directly trades image detail for a smaller file. Higher settings look closer to the original; lower settings shrink the file further but discard more detail. Where that balance lands depends on the image and how it will be used.
When to compress JPEGs
Common reasons: staying under an email or upload size limit, speeding up a website, or fitting more photos into limited storage. Batches of photos, in particular, often benefit from a consistent quality preset across the whole set.
Compress JPEG FAQ
How does JPEG compression actually work here?
JPEG supports real lossy re-encoding at a chosen quality level, so lowering the slider genuinely shrinks the file by discarding some image detail.
Will the compressed file always be smaller?
In most cases, yes, since lowering JPEG quality reduces data. An already heavily-compressed JPEG may not shrink much further — we always show the real before/after size, not a fabricated saving.
Will I notice a quality difference?
It depends on the setting. Higher quality (closer to 100%) keeps detail closer to the original; lower quality trades detail for a smaller file. Try the Balanced preset as a starting point.
Can I compress several JPEGs at once?
Yes — add multiple images, set a preset or per-image quality, then use Compress All and Download All.