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; everything 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. The moment 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.
Where do your images go?
Nothing is uploaded. Compression happens in your browser, and hidden photo metadata (location, camera info) is stripped automatically. Close the tab and both the source and result are gone.