Compress Images Online — Free, No Signup

An image compressor is a free browser-based tool that reduces JPG, PNG, and WebP file sizes by up to 80% without visible quality loss. Your images never leave your device — all processing happens locally.

How does image compression work?

Image compression reduces file size by removing redundant pixel data while keeping visual quality intact. When you upload an image here, the compression runs directly in your browser using JavaScript. Lossy compression — the kind used for JPG and WebP — removes data your eyes are unlikely to notice. PNG compression is lossless, optimizing how pixel data is stored without discarding anything. The quality slider lets you control the trade-off between file size and image quality.

What image formats can I compress?

This tool supports JPG, PNG, and WebP formats — the three most common image formats on the web. JPG is best for photographs, PNG for graphics with transparency, and WebP for modern web use with smaller file sizes. Simply drag and drop your image or click to upload, adjust the quality slider, and download the compressed result.

Is my data safe?

Yes. All compression happens in your browser. Your images never leave your device and are never uploaded to any server. There are no accounts, no signups, and no data collection beyond basic anonymous analytics. Once you close the page, your images are gone from memory.

How does this compare to TinyPNG?

Unlike TinyPNG, this tool processes images entirely in your browser — your files are never uploaded to any server. There's no 20-file limit or 5MB size cap. You can compress unlimited images of any size, completely free. TinyPNG uploads your files to their servers for processing, which raises privacy concerns for sensitive images. This tool keeps everything on your device.

What's the difference between lossy and lossless compression?

Lossy compression permanently removes some image data to achieve smaller files. At high quality settings (70-90%), the difference is usually invisible to the human eye. Lossless compression reduces file size by optimizing how data is encoded without removing anything — the output is pixel-identical to the original. JPG and WebP use lossy compression by default. PNG uses lossless compression.