Convert Images — PNG, JPG & WebP

Picking the right target format

• PNG — lossless and supports transparency. Correct for logos, icons, diagrams and screenshots of text, where a lossy format would smear the sharp edges. Wrong for photographs: a photo saved as PNG is often several times larger than the same photo as JPG with no visible benefit.
• JPG — the universal photo format. Every device, printer and upload form on earth accepts it. No transparency support, and every re-save degrades it slightly.
• WebP — smaller than both at equivalent quality, handles transparency and animation, and is supported by every current browser. The default choice for anything going on a website. The main reason not to use it is software outside the browser: some older desktop applications and print workflows still refuse it.

What happens to transparency

Converting a transparent PNG to JPG destroys the transparency, because the format simply has no channel to store it. Something must fill those pixels, and this tool lets you choose what — white by default, which is what you usually want. Some converters silently fill with black instead, which is how you end up with a logo that looks fine on the preview and terrible on the page.

Going the other way, JPG to PNG, does not restore anything. You get a lossless copy of an already-lossy image, typically at several times the file size. Do it only when a system demands a PNG.

Conversion cannot undo compression

This is the single most common misunderstanding. Converting a heavily compressed JPG to PNG or WebP does not recover lost detail — the information was discarded when the JPG was first saved and there is nothing to bring back. You are making a faithful copy of a damaged file.

The practical rule: convert from the highest-quality original you have, once. Every lossy re-save compounds. If you converted a photo to WebP and then need a JPG, go back to the original rather than converting the WebP.

About HEIC photos from iPhone

Photos taken on a modern iPhone are saved as HEIC, which Windows and many websites still will not open. This tool relies on the browser's own decoder, and only Safari has one for HEIC: in Chrome, Firefox or Edge the file is rejected with an error. The HEIC to JPG converter brings its own decoder, so it works in every browser; use that one for iPhone photos.

To stop the problem at the source, the setting is on the phone: Settings → Camera → Formats → Most Compatible makes the camera shoot JPG from then on.

Last updated October 21, 2026