Drop an image here or
How to use the Image Compressor
- Drop or select an image (JPEG, PNG, or WebP).
- Choose the output format and adjust the quality slider.
- Click Compress & Download: the compression ratio is shown before you download.
How image compression works
Lossy compression (JPEG, WebP) permanently discards image data that the human eye is least sensitive to, fine high-frequency details, subtle color transitions. This produces much smaller files at the cost of some quality. The quality slider controls how aggressively data is discarded.
Lossless compression (PNG) reduces file size without discarding any data. The decompressed image is bit-for-bit identical to the original. PNG files are generally larger than JPEG at the same visual quality, but they never degrade through repeated saves.
Recommended quality settings
| Use case | Recommended quality |
|---|---|
| Web photos (blog, social) | 75-85% |
| E-commerce product images | 80-90% |
| Print-quality archival | 90-95% |
| Thumbnails and previews | 60-75% |
JPEG vs WebP for compression
WebP typically achieves 25-35% smaller file sizes than JPEG at equivalent perceptual quality. If your target audience uses modern browsers (Chrome, Firefox, Safari, Edge), WebP is the better choice. For maximum compatibility with older systems or email clients, stick with JPEG.
Common use cases
- Web performance: reduce image weight to improve LCP (Largest Contentful Paint) and page load speed
- Upload limits: compress photos to fit under size limits for profile pictures, attachments, or form uploads
- Storage savings: compress large photo libraries before archiving or backing up
- Email attachments: reduce image size before attaching to emails
Privacy
All compression runs in your browser using the Canvas API. No images are uploaded to any server.