Utilz
Image Compressor
Reduce image file size without losing quality
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Want to learn more? Read our guide: Complete Guide to Image Compression
Why Use This Tool?
- Reduce image file size for faster website loading without visible quality loss.
- Optimize images for email attachments that have file size limits.
- Save storage space on your device by compressing photos while keeping them clear.
- Improve page speed scores and Core Web Vitals for better SEO rankings.
Compression Formula
JPEG quality parameter (0-1) controls the compression ratio. A quality of 0.75 typically reduces file size by 50-70% while maintaining visual clarity.
How to Use
- Upload an image (JPG, PNG, WebP)
- Adjust the quality slider (1–100)
- Compare original and compressed file sizes
- Click "Download" to save the compressed image
FAQ
How much can I reduce the file size?
Typically 50–80% size reduction at quality 60–80. The exact savings depend on the image content and original format.
Does compression affect image quality?
At quality 70+, the difference is usually imperceptible. Lower quality values produce smaller files but may show artifacts.
What quality setting should I use for web images?
A quality of 70-80 is ideal for most web images, providing a good balance between file size and visual quality. For photos, 75 is a popular sweet spot.
Can I compress PNG images?
Yes, but PNG uses lossless compression, so the quality slider has less impact. For maximum size reduction, consider converting to JPEG or WebP format instead.
What is the best image format for compression?
WebP offers the best compression ratios, typically 25-35% smaller than JPEG at equivalent quality. JPEG is good for photos, while PNG is best when you need lossless quality or transparency.