When to use it
For photos you'll post on a blog, screenshots to email, or images for social — where it needs to look the same but be lighter. Drop several at once; processing runs in this page.
Quality vs. size
The quality slider controls compression. PNG keeps the visuals untouched and just reorganizes file structure — usually 10–30% lighter.
Local processing
No upload / download round-trips. When you drop a file, compression runs in this page and the result is returned locally. Up to two images are processed in parallel.
When not to use it
- You need to preserve original quality — for print, exhibition, or archival, don't compress here. Keep the originals.
- Animated GIFs — only the first frame survives; animation is lost. Use a dedicated tool.
- iPhone photos (HEIC) — browsers can't read this format. Export to JPG first.
- Print-ready images — print shops want the original high resolution. This tool is for web uploads only.
Customer photos are not uploaded
WASM codecs (mozjpeg · oxipng · libwebp) compress in your browser directly. Hidden EXIF metadata (GPS, camera model) is stripped automatically and never carried into the output.