A single unoptimized hero image can add a second to your page load time. For a business site that might mean lost visitors. Here are the best free ways to fix it.
What to look for in a compressor
The best tools give you a live preview, let you pick the output format, and — critically — process files locally so your images never leave your device.
Our pick: toolsforfree Compress Image
Our free image compressor runs entirely in your browser. Drag an image in, move the quality slider, and download the result. No uploads, no queues, no account.
Format matters more than tool
JPEG is great for photos, WebP is even smaller for web use, and PNG is only for graphics with transparency. Choosing the right format is often a bigger win than any compression setting.
A simple benchmark
A 2.4 MB JPEG photo compressed to quality 70 typically lands around 350 KB — an 85% reduction with barely visible differences on screen. That's the kind of win every webmaster should take.