Will WebP keep my PNG's transparency?
Yes. WebP supports alpha transparency just like PNG. Logos, icons, and any image with transparent areas convert cleanly.
How much smaller will WebP be vs PNG?
Typically 25–50% smaller for photographic content, and 50–80% smaller for UI / illustration content compared to a smart-quantized PNG. The exact ratio depends on image content.
Should I use WebP for every PNG?
Almost always for web/email/social media. Stick with PNG only when you need pixel-perfect lossless or when the receiving platform doesn't accept WebP (rare in 2026).
Are my images uploaded to your server?
No. All images are processed locally in your browser using JavaScript and WebAssembly. Your files never leave your device, and we have no infrastructure that could receive them.
Can I compress multiple images?
Yes. You can drop a batch of images (or an entire folder) and download the compressed results as a single ZIP file with the original folder structure preserved.
Which formats are supported?
JPG, PNG, WebP and AVIF are supported when available in your browser. The Auto mode picks the smallest modern format your browser can encode.
Can I compress images to a specific size?
Yes. Use the
Compress to KB tool to target 100KB, 200KB, 500KB, 1MB or any custom size.
Do I need an account?
No. There is no signup, no login, and no payment. The tool works as soon as the page loads.