Image Format Converter
Original
Converted
Picking the right format
- JPG — photographs. Small files, no transparency, slight loss each time it is saved.
- PNG — logos, screenshots, diagrams and anything with transparency or crisp edges. Lossless, but large for photos.
- WEBP — the web default now. Usually the smallest of the three and it keeps transparency.
What actually changes
The picture is decoded and re-encoded in the new format. Pixel dimensions stay the same; what changes is how those pixels are stored, which is why the file size can move so much. Converting a transparent PNG to JPG is the one conversion that alters what you see, because the transparent areas must be filled with a solid colour.
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Free to use, no sign-up, works on any phone.
Frequently Asked Questions
JPG cannot store transparency, so the see-through areas have to be filled. You choose the colour — white by default. Convert to WEBP instead if you need the transparency kept and a small file.
JPG or WEBP. A photograph in PNG is often five to ten times larger for no visible gain, because PNG is built for flat colour and sharp edges rather than continuous tone.
Yes. Every current browser reads it, including Safari since 2020. It is usually 25 to 35 per cent smaller than JPG at the same visual quality, which is why sites use it.
Going to PNG or WEBP-lossless does not. Going to JPG re-encodes the picture, so each save loses a little — convert from the original rather than from a JPG you have already saved several times.
Only if your browser can open HEIC, which Safari on Apple devices can and most others cannot. If it will not open, ask your phone to share the photo as JPG and convert that.