Image Compressor
Compress images without uploading them. All processing happens 100% in your browser—your images never leave your device, guaranteeing total privacy.
Compress JPG, PNG, and WebP images to reduce file size while maintaining visual quality — all in your browser with SolveBar's Image Compressor. See the size reduction percentage in real time. Your images never leave your device.
How image compression works
JPEG and WebP compression uses lossy algorithms that discard imperceptible visual data. At quality 80-85%, most images lose only a tiny fraction of visual quality while reducing file size by 50-70%. PNG compression is lossless — typically achieving 20-30% reduction.
Choosing the right quality level
Quality 85-90: near-lossless, for professional photography. Quality 70-80: the sweet spot for web — significant size reduction with barely perceptible quality loss. Quality 50-65: noticeably lower quality, suitable for thumbnails. Below 50: visible artifacts, only for very bandwidth-constrained contexts.
Format conversion for compression
Converting PNG to WebP often achieves 25-35% smaller files. Converting JPEG to WebP at equivalent quality produces 25-34% smaller files. WebP is supported by all modern browsers.
Frequently Asked Questions
Will compression damage my original file?
No. The original file is never modified. You download the compressed version separately, leaving your original intact.
What is the maximum file size I can compress?
No hard limit is enforced, but very large files (50MB+) may be slow to process in the browser due to memory constraints.
How much smaller will my image be?
Depends on original image content and format. A large PNG photograph might shrink 60-80% when converted to WebP. The tool shows the exact size reduction after processing.