Image tool
Compress JPG Images Online
Shrink a JPEG to a target percent of its original bytes. The slider is file size, not a quality label. Processing stays on your device.
- Free to use
- Processed on your device
- No account needed
The slider is a file-size target, not JPEG quality. 50% means we aim for about half the original bytes, without going over.
Compressing JPEG without a quality myth
Many tools expose a “quality 60” slider and leave you guessing how large the file will be. Here the control is the output size as a percent of the original bytes. That matches how upload errors are written (“max 500 KB”) more closely than abstract quality scores.
Start with 50–70% of the original size for web photos. If you still miss a hard kilobyte limit, switch to the 100 KB or 200 KB tools, or resize the long edge first. Re-compressing the same JPG repeatedly stacks artifacts; prefer one careful export from a larger master.
A worked example and help
Need a portal limit? Start with the exact byte cap and check minimum dimensions too. Our generated 733,759-byte JPG reached 99,526 bytes at 1200 × 800 in the measured Chrome run; that result is source-specific and uses lossy quality 15.
Related tools
Stay in the browser for the next step — convert, compress, crop, or strip metadata.
- Compress PNGShrink PNG images by writing a smaller JPG or WebP in your browser.
- JPG to WebPConvert JPG images to WebP in your browser. WebP is often smaller at a similar visual quality. Encoding uses your browser; if it cannot encode WebP you will see an error instead of an upload.
- Image ResizerResize images to exact pixel dimensions without uploading them.
- Remove Image MetadataStrip EXIF and other metadata by re-encoding the image locally. The original file is not uploaded.
FAQ
Does 50% mean quality 50?
No. 50% means we aim for half the original file size, without going over. Encoding quality is searched automatically.
Can I keep JPG output?
Yes. This page starts with JPEG output. Switch to WebP if you want a smaller file the destination can open.
PNG photos?
This page expects a JPG. Use the general compressor for PNG or WebP, or convert PNG to JPG first.
Frequently asked questions