Image Compressor
Compress PNG, JPEG, and WebP images up to 80% smaller. 100% in-browser — your images never leave your device.
Drop images here or click to browse
Supports PNG, JPEG, WebP, GIF, BMP — Max 20 MB per image
Why Compress Images?
Images account for 50-80% of a typical web page's total size. Unoptimized images slow down page load times, increase bandwidth costs, and hurt SEO rankings. Google's Core Web Vitals specifically measure Largest Contentful Paint (LCP), which is directly impacted by image sizes.
Key Features
- Adjustable quality — Fine-tune the quality slider from 1-100%. For most photos, 70-80% quality is visually identical to the original but 50-70% smaller
- Format conversion — Convert PNG to WebP for 25-35% smaller files, or JPEG to WebP for modern browsers
- Resize on compress — Optionally limit max width to 1920px, 1280px, 800px, or 640px for web-optimized images
- Batch processing — Compress multiple images at once with a single download for all
- Privacy-first — Zero server uploads. Everything runs via Canvas API in your browser
Recommended Quality Settings
- 85-95% — High quality. Best for portfolio sites and photography. ~20-40% file size reduction
- 70-85% — Balanced. Ideal for blog posts, e-commerce product images. ~40-60% reduction
- 50-70% — Aggressive. Good for thumbnails, social media, email images. ~60-80% reduction
- Below 50% — Maximum compression. Visible quality loss but good for previews and placeholders
WebP vs JPEG vs PNG
- WebP — Best overall format for web. 25-35% smaller than JPEG at same quality. Supported by all modern browsers (Chrome, Firefox, Safari 14+, Edge)
- JPEG — Best for photographs and complex images. Lossy compression. No transparency support. Universal compatibility
- PNG — Best for graphics, logos, and images requiring transparency. Lossless but larger file sizes. Use PNG-8 for simple graphics
Why Some Images Don't Get Smaller
If a file shows "Already optimal", it means the original is already well-compressed and re-encoding it would actually increase the file size. This is common with:
- Optimized PNGs — PNG is a lossless format, so the quality slider has no effect. Tools like TinyPNG or Photoshop's "Export for Web" already apply advanced PNG compression (palette reduction, DEFLATE tuning) that the browser's Canvas API cannot replicate
- Small images — Very small images or icons have little redundancy to compress further
- Pre-compressed files — Images already processed by other optimization tools
Tip: To reduce PNG file sizes, try converting to WebP or JPEG using the Output format dropdown — this typically saves 25-70% even on already-optimized PNGs.