What this does
Re-saves JPG and JPEG photos as PNG files, entirely inside your browser.
It exists for the situations where something downstream insists on
.png: an app-store listing, a design tool's import dialog, a
document template, a sprite pipeline, or a form with a narrow allow-list.
Up to 20 files per batch, 50 MB each; each output is the original filename
with .png on the end. No file is uploaded at any point.
Does converting JPG to PNG make the image better quality?
No, and it is worth being blunt about this because the question comes up a lot. JPG compression threw away fine detail when the photo was first saved — that is how it gets photos so small. Converting to PNG stores the pixels that remain exactly, and from then on nothing further is lost no matter how many times the file is opened and re-saved. It freezes the current state; it cannot recover detail that no longer exists. The PNG will look identical to the JPG, not sharper.
Why is there no quality slider?
Because PNG is lossless, there is nothing to trade off. The browser's PNG encoder writes every pixel it was given, and the compression it applies (deflate, the same algorithm as ZIP) changes the file size but never the picture. The lossy variants of this tool — PNG to JPG, for instance — show a 10-to-100 slider; this page does not need one.
How do I convert JPG to PNG?
- Drop
.jpgor.jpegfiles above, or click to pick them. Each row shows the dimensions and size once decoded. - Click Convert to PNG.
- Download each file from its row; the button shows the PNG's size. Files over 20 MB get a "may be slow" note, and anything over 50 MB is refused.
Why is the PNG so much bigger than the JPG?
Expect five to ten times the size for a photograph. JPG was designed in 1992 around how eyes perceive photos — it discards what you will not notice — while PNG, from 1996, was designed for graphics with flat colour and hard edges and refuses to discard anything. On a smooth-gradient photo there is little for PNG to compress, so the file balloons. A 2 MB JPG becoming a 15 MB PNG is normal. If the receiving system has a size limit, shrink the dimensions first with the image resizer, then convert.
Will the PNG have a transparent background?
Only if you add one. A JPG has no alpha channel, so every pixel is opaque and the PNG comes out fully opaque too, even though the format could hold transparency. To actually cut out a subject, run the photo through the background remover, which outputs a transparent PNG directly. Output is 8-bit RGBA and capped at 8192 pixels per side.
What happens to EXIF and location data?
It is dropped. The PNG is encoded from the pixels on a canvas, so camera model, capture date, GPS coordinates and colour profile embedded in the JPG do not travel with it. That is often a welcome side effect before posting a photo publicly; if you want to see what the original contains first, the EXIF viewer reads it. Either way, the whole conversion runs on your device, so the metadata is never seen by a server.