Processed in your browser. Your file is not uploaded.
Need advanced optimization or multiple output formats?
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Choose the format you need — the conversion happens on your device.
Convert images between common web formats directly on your device.
How it works
JPG for photos, PNG for transparency, WebP for the web.
JPG, PNG and WebP are read directly by your browser.
JPG is the smallest for photographs, PNG keeps transparency and exact pixels, WebP usually beats both in size.
The old and new size are shown side by side.
More free browser tools on Nano Banana Lab.
Photographs: JPG or WebP. Logos, screenshots and anything with sharp edges or transparency: PNG or WebP. For a website, WebP is usually the smallest of the three.
No. A conversion can only keep or lose detail, never add it back. Converting a JPG to PNG makes the file bigger without making it sharper.
PNG and WebP keep it. JPG cannot store transparency at all, so transparent areas are filled with the background colour you choose.
No. Everything happens in your browser, with no account and no credits.