Compress and optimize images entirely in your browser. Since there are no uploads, your files never leave your device.
Key Features of Image Compressor
- Quality Compression Slider Adjust and fine-tune compression levels to balance size and visual fidelity.
- Split-Screen Preview Compare original and compressed images side-by-side in real-time.
- Real-Time Savings Count View kilobyte reductions and percentage savings instantly.
Image Compressor Examples
Compress photography JPG
Shrink a high-res photo from a DSLR camera for web previewing.
Input
photo.jpg (4.5 MB)Output
photo.jpg (980 KB)Optimize PNG screenshot
Compress a web design screen capture to share with clients.
Input
desktop.png (2.1 MB)Output
desktop.png (610 KB)How to Use Image Compressor
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1. Upload Your Image
Drop a JPEG, PNG, WEBP, or SVG file onto the drop zone, or click Browse Files. You can compress multiple images in sequence.
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2. Adjust Quality Settings
Use the quality slider to balance file size against visual fidelity. For SVGs, toggle specific SVGO optimizations to control what gets stripped.
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3. Download the Compressed File
The compressed output and size savings percentage appear instantly. Click Download to save the optimized file.
Common Use Cases for Image Compressor
- Faster Web Loads Reducing high-res photography sizes for rapid site loading speeds.
- Email Limits Squeezing document scans to fit within strict email attachment limits.
- Local Disk Space Optimizing personal photo libraries to free up local disk space.
The Technical Details
Leverages the Canvas toBlob compression parameters to downscale raster footprints in real-time inside local memory loops.
Frequently Asked Questions
How much can the file size be reduced?
Results vary by image. JPEGs at quality 75–80 typically lose 40–70% of their original size with minimal visible difference. SVG compression can be even higher for complex files.
Is compression lossless or lossy?
JPEG and WEBP compression is lossy — lower quality means smaller files but more artifacts. PNG and SVG compression uses lossless or structure-only optimizations.
Which formats are supported?
JPEG, PNG, WEBP, and SVG. Each format uses format-appropriate compression: Canvas re-encoding for raster images and SVGO for vector files.
Are my images uploaded to a server?
No. All compression runs in your browser. JPEG, PNG, and WEBP use the HTML5 Canvas API; SVG uses the SVGO library loaded locally. Nothing leaves your device.