Image Compressor
Online image compressor to reduce file size without losing quality. Compress JPEG, PNG, WebP images directly in your browser—free, no uploads.
Drag & drop an image
or click to browse • Max 50MB
Features
- Quality control slider (10-100%)
- Target file size limit option
- Automatic dimension resize for large images
- Format conversion (JPEG, PNG, WebP)
- EXIF metadata preservation option
- Real-time compression preview and stats
Common Use Cases
- Reduce image file sizes for faster websites
- Meet file size limits for uploads
- Optimize images for email attachments
- Compress photos for mobile apps
- Batch optimize for web galleries
Image Compression Techniques
Image compression reduces file size by removing redundant or less noticeable data. This speeds up websites, saves bandwidth, and reduces storage costs.
Compression types:
- Lossy - Removes data permanently (JPEG, WebP). Smaller files, some quality loss
- Lossless - No data loss (PNG). Larger files, perfect quality
- Quality setting - Balance between file size and visual quality (80-90% is sweet spot)
Format selection:
- JPEG - Best for photos, gradients, complex images (lossy, no transparency)
- PNG - Best for logos, text, transparency needed (lossless or lossy-lite)
- WebP - Modern format, 25-35% smaller than JPEG/PNG with same quality
- AVIF - Newest format, even smaller but limited browser support
Quality vs file size: At 90% quality, most users can't detect compression. At 60-70%, slight artifacts appear. Below 50%, noticeable degradation occurs.
Best practice: Use 80-85% quality for web images, preserve originals at 100%, and choose WebP for best size/quality ratio with JPEG fallback.
Frequently Asked Questions
80-90% is the sweet spot for web images. At 90%, compression is nearly invisible. At 85%, you get good savings with minimal quality loss. Below 70%, artifacts become noticeable. Test on your specific images!
Use WebP when possible (modern browsers support it). Fallback to JPEG for photos and PNG for logos/graphics with transparency. WebP offers 25-35% better compression than JPEG/PNG at the same quality.
Lossy compression (JPEG, WebP) removes some data, but at 80-90% quality, the loss is imperceptible to most users. Lossless compression (PNG) reduces file size without any quality loss. Always keep high-quality originals!
EXIF is camera/photo data (date, location, camera settings). Remove it for web use (privacy + smaller file size). Preserve it for archival photos or when metadata is needed (e.g., copyright).
No! Each lossy compression degrades quality further. Compress once from the original high-quality source. If you need to re-compress, go back to the original, don't compress an already compressed image.
💡 Tips
- Use 85% quality for a good balance of size and quality
- Convert to WebP for 25-35% better compression than JPEG
- Remove EXIF metadata to reduce file size and protect privacy
- Compress from originals—never re-compress already compressed images