Compress JPG Images
Shrink JPG files in your browser — nothing uploaded, nothing watermarked.
Your images stay on your device. Nothing is uploaded.
JPG is the workhorse of photographic images on the web, but cameras and phones produce JPGs that are 5–15× larger than they need to be. Image-Compressor.uk re-encodes your JPGs in the browser, stripping wasted bytes while preserving the parts of the image your eyes actually notice.
Drop a JPG (or hundreds) below to start. Files never leave your device — everything happens locally with the Canvas API. Adjust the quality slider for a stronger or gentler reduction, or pick a preset for a specific workflow.
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Frequently asked questions
- How do I compress a JPG image?
- Drag and drop your JPG file (or click to select) and the compressor reduces its size automatically using the pre-tuned settings on this page. Adjust the quality slider, max dimension, or output format for a stronger or gentler compression. Everything runs in your browser — your file never leaves your device.
- Does compressing a JPG reduce quality?
- JPEG is a lossy format, so any re-encoding involves some quality trade-off. The default quality of 80% is the sweet spot — visually identical for most photographs at a fraction of the original size. You can preview before downloading and tune the quality slider until the size and quality balance feels right.
- Is the JPG compressor free?
- Yes. Image Compressor is free, requires no signup, and has no upload limits. For batches, use the bulk compressor.
- Are my JPG files uploaded to a server?
- No. Compression happens entirely in your browser using the Canvas API. Files never touch our servers — that is what makes the tool both private and fast.
- What is the largest JPG I can compress?
- Single uploads are capped at 25 MB to keep the tool responsive in the browser. Very large files may be slower because compression uses your device's memory and CPU rather than a server.
Ready to compress your JPG files?
Drop them in. Compression is free, instant, and never leaves your device.
Start compressing