Compress JPEG Online
Reduce JPG file size with an adjustable quality slider and optional resize — free, in your browser, with nothing uploaded.
How JPEG compression works
JPEG is a lossy format, which means you can trade a tiny, usually invisible amount of detail for a much smaller file. Two levers do the work: the quality setting (how aggressively to compress) and the dimensions (a 6000px photo displayed at 1500px is wasting bandwidth). Combine both and a multi-megabyte JPG often drops to a few hundred kilobytes with no visible difference.
Tips for the best result
- Start at quality 75–80 and only raise it if you spot artifacts.
- Resize to the largest size you actually display — for product photos, ~2000px is plenty.
- Compare the before/after size shown after compressing to confirm the saving.
How to compress a JPEG
- Open the image compressor.
- Drop in your JPG.
- Adjust the quality slider and, if needed, set a max size.
- Click Compress and download the smaller file.
Frequently asked questions
How do I reduce JPG size without losing quality?
Lower quality slightly (75–85 is usually invisible) and resize to the dimensions you actually display. Together that can cut size 60%+ with no noticeable change.
What quality setting should I use?
Around 75–80 for photos. Higher for hero images, lower for thumbnails.
Does it upload my files?
No — it compresses entirely in your browser. Free, no sign-up, nothing uploaded.