Which format should I pick?
- JPG: the most widely used format for photos. It trades a little quality for a much smaller file and cannot store transparency. A safe choice for forms, email and messaging.
- PNG: lossless, so it suits text, logos, screenshots and transparent backgrounds. Photos saved as PNG get large.
- WebP: a format from Google, which says lossy WebP is 25–34% smaller than comparable JPG and lossless WebP 26% smaller than PNG. It supports transparency, but some older apps cannot open it.
How the conversion works
Your browser draws each image onto a canvas and saves it again in the format you choose. Nothing is uploaded to a server, so your photos stay on your device and it works quickly even on a slow connection. Add several images to convert them one after another, then download each one or everything as a single ZIP file.
Phone photos are saved upright, using their orientation data. Because the image is re-saved, camera details such as device and location are not carried over.
Good to know
- For JPG or WebP, a quality around 90% usually looks the same to the eye while saving a lot of space.
- iPhone HEIC photos can only be converted if your browser can open them. If not, set Settings → Camera → Formats to “Most Compatible”, or share the photo as JPG.
- Some browsers, such as Safari, cannot save WebP, so the WebP option may be turned off.
- Animated GIFs are saved as their first frame only.
FAQ
Are my photos uploaded?
No. Conversion happens inside this browser and files are not sent or stored anywhere. It even works offline once the page is open.
What happens to transparency when I convert PNG to JPG?
JPG cannot store transparency, so those areas are filled with the background color you choose (white by default). Pick PNG or WebP to keep it.
How many images can I convert at once?
There is no fixed limit; it depends on your device’s memory. On a phone, split very large batches of high-resolution photos.