Free Online Image Compressor
Free online image compressor, no registration or login required, images processed locally without uploading to server. Supports JPG/JPEG, PNG, WebP, GIF, AVIF format output, suitable for website speed optimization, e-commerce image optimization and social media publishing.
Everything stays on your device
Every compression runs locally in your browser — no uploads, no sign-up.
Multiple Formats
Supports JPEG, PNG, WebP, GIF, RAW (ARW/CR2/CR3/NEF/DNG), BMP and AVIF formats for different usage scenarios
High Compression
Advanced compression algorithms to achieve maximum compression while maintaining image quality
Local Processing
All compression is done locally, no server upload required, ensuring your image security
Can you tell the difference?
Drag the slider to see the compression effect
Before
2.95 MB
After
247 KB
Compression ratio: 91.82%
Size saved: 2.71 MB
Drag to compare
FAQ
How's the quality after compression?
We use smart compression algorithms to significantly reduce file size while maintaining visual quality. You can adjust compression quality to balance size and quality.
Why does the compressed image have a larger file size?
The increased file size after compression is usually due to the original image being highly compressed, which can lead to an increase in size when compressed again. We recommend using the original image for compression.
Is there a size limit for compression?
Since compression is done locally, file size is mainly limited by your browser's memory. We recommend files under 50MB.