Convert any image to PNG

What PNG is for

PNG stores every pixel exactly as it was handed over. Nothing is approximated, nothing is thrown away, and saving the same file fifty times changes nothing. It also carries a real alpha channel, so a cut-out logo keeps its transparent corners instead of acquiring a white box. Those two properties are the whole reason to convert into PNG, and they are why it is the default for screenshots, diagrams, icons, UI assets and anything that will be edited again later.

This page accepts anything your browser can decode — JPG, WebP, AVIF, GIF, BMP, SVG, and HEIC on Safari — identifies it from its first bytes rather than its extension, and writes a standard 8-bit PNG. Several files at a time, each with its own download, and a ZIP once there is more than one.

Converting a JPG to PNG does not repair it

This is the single most common misunderstanding about this conversion, so it is worth being blunt. JPEG compression is lossy and permanent. The blocky edges around text, the mottling in a blue sky, the coloured fringes around a dark line on white — those are baked into the pixels. PNG will preserve them perfectly and faithfully, at three to ten times the file size. It cannot reconstruct what the JPEG encoder discarded, and neither can anything else.

So converting JPG to PNG is worth doing when the file is about to be edited repeatedly, pasted into a document that will mangle it further, or handed to a tool that refuses JPEG. It is not worth doing to “improve quality”, and it is a bad idea for storing photographs: a folder of holiday pictures converted to PNG will be many gigabytes for no visible gain.

Size, and the only dial you have

PNG has no quality setting. Its compression is lossless, so the only way to make the output smaller is to hand it fewer or simpler pixels. That is what the longest-side control does, and it is a genuine resample with smoothing, not a display trick.

How much the file grows depends entirely on the content. Screenshots, flat-colour graphics and line art often come out smaller than the JPEG they came from, because PNG compresses large runs of identical colour extremely well. Photographs go the other way — grass, skin and sky have no repeating patterns to exploit, so a 2 MB HEIC or a 1 MB JPEG can easily become 20 MB. If that number is a problem, either scale down first or stay with JPG.

Transparency, animation and the odd corner cases

Alpha is preserved by default: a transparent WebP, AVIF or GIF comes out as a transparent PNG. The flatten options exist for the occasional upload form or print workflow that rejects an alpha channel outright, and for the case where an image is mostly empty and filling it makes the file much smaller.

Animated sources produce one still frame. PNG's animated cousin, APNG, is not what browsers give you from a canvas, so there is no honest way to offer it here — if the movement matters, keep the original or convert it to GIF instead. SVG is rasterised at the size written into the file; if you want to choose the export width precisely, SVG to PNG is built for exactly that. And as with every conversion on this site, EXIF does not survive: the output is pixels, not camera history.