🗜️ Compress Image Online
Reduce image file size to 20KB, 50KB or any custom target. Supports JPG, PNG, WebP. Free & instant.
Drop your image here
Supports JPG, PNG, WebP, GIF — up to 20MB
Original: —
Compressed: —
Saved: —
How to Compress an Image
- Click "Choose Image" or drag & drop your file
- Select compression mode: by quality % or target size in KB
- Choose output format (JPG recommended for photos)
- Click "Compress Now" and download your optimized image
Frequently Asked Questions
How to compress image to 20KB?
Select "By Target Size" mode, enter 20 in the KB field, and click Compress. The tool will automatically find the right quality level.
Is my image uploaded to a server?
No. All compression happens directly in your browser using the Canvas API. Your images never leave your device.
Which format gives the smallest file size?
WebP typically gives 25–35% smaller files than JPG at the same quality. Use JPG for maximum compatibility.
Can I compress PNG without losing transparency?
Yes, select PNG as output format. Note that PNG compression is lossless so size reduction is limited.