Free Online Image Compressor — Reduce JPG, PNG & WebP File Size

Large image files slow down your website, increase bounce rates, and hurt your Google PageSpeed score. This free image compressor reduces file size by adjusting the compression quality level — helping you find the perfect balance between file size and visual quality.

How Image Compression Works

JPEG and WebP compression is lossy — it discards some image data to reduce file size. At quality 75–85%, most people cannot see any difference from the original. PNG uses lossless compression, so quality level has less impact on size but still reduces metadata overhead.

Recommended Quality Settings

• 90–100% — Near-original quality, minimal compression. Use for printing.
• 75–85% — Excellent quality with significant size reduction. Best for web images.
• 50–70% — Noticeable compression, much smaller files. Good for thumbnails and previews.
• Below 50% — Heavy compression artifacts visible. Use only for very small thumbnails.

Why Compress Images for the Web?

Google's Core Web Vitals include Largest Contentful Paint (LCP) — large uncompressed images are the #1 cause of slow LCP scores, which directly impacts SEO rankings. Compressing images to under 200KB for hero images and under 100KB for thumbnails is a best practice.