Free Image Optimizer
Compress and convert images to WebP, JPEG, or PNG. Reduce file size by up to 80% while maintaining visual quality.
Drop an image here, or click to browse
Supports JPEG, PNG, WebP, GIF. Max 10MB.
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Frequently Asked Questions
What is the best image format for the web?
WebP is the best format for most web images. It provides 25-34% better compression than JPEG and supports transparency like PNG. All modern browsers support WebP. Use AVIF for even better compression where supported, and JPEG as a fallback for older browsers.
How much can I compress images without losing quality?
Quality 75-80 (Medium compression) gives the best balance. Most users cannot distinguish between quality 80 and quality 100, but the file size difference can be 50-70%. For hero images, use quality 85-90. For thumbnails and decorative images, quality 60-70 is fine.
Does image size affect page speed?
Yes, significantly. Images are typically the heaviest resources on a web page, accounting for 50%+ of total page weight. Unoptimized images are one of the easiest performance wins. Serving properly sized, compressed images in modern formats can improve LCP by seconds.
Should I resize images before uploading to my site?
Absolutely. Never serve a 4000px wide image when it displays at 800px. Use srcset to serve different sizes for different viewports. A good rule: serve images at 2x the display size for retina screens (e.g., 1600px image for an 800px display slot).