Does compression reduce JPG quality?
Yes — JPG is lossy by nature. The Best Quality preset (~92%) keeps photos visually identical for most viewers. Balanced (~78%) is the standard web setting. Small File (~55%) prioritizes file size with visible artifacts only on close inspection.
Is my image quality the same as desktop apps?
JPG encoding here uses the browser's built-in encoder (Chromium and Safari ship mozjpeg-quality encoders). For most photos the result is indistinguishable from Photoshop's Save for Web at the same quality.
Can I keep camera metadata (EXIF)?
Yes. Toggle off Strip metadata in the settings panel and EXIF (camera, lens, GPS, timestamp) is preserved on JPG output via piexifjs. EXIF is stripped by default for privacy.
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.