Image Converter

For photographs on a website, WebP is usually best: typically 25–35% smaller than JPG at the same quality, and every modern browser supports it. JPG is the compatibility choice — email attachments, older software, some marketplaces. PNG is lossless and keeps transparency, so it suits logos, screenshots with text and graphics — but photo PNGs are huge, so convert those to WebP or JPG instead.

Converting to JPG or WebP re-encodes the picture, and at the default 85% quality the difference is invisible in normal use while the file shrinks a lot. Converting to PNG is lossless — the pixels are preserved exactly — but the file will usually grow. Converting from JPG to PNG cannot restore detail the JPG already threw away; it just stops further loss from that point on.

Yes for PNG and WebP outputs: transparent areas of the original stay transparent. JPG has no transparency at all, so transparent pixels are placed on a white background when you convert to JPG — the standard behaviour for logos and cut-outs being prepared for print or older platforms.

There is no account, quota or watermark. You can convert batches of images in one go; the practical limit is your device's memory, so very large batches of huge camera photos may be faster in two or three runs. Files are processed one at a time on your device — nothing is queued on a server.