png → jpg
PNG to JPG, with the size you choose
PNG files are frequently enormous for what they contain. For a photograph, JPEG stores the same picture at a fraction of the size, and this lets you pick where on that trade to land.
Files are processed on your device · nothing is uploaded, stored or logged
How it works
Pick your file. The browser opens it straight from disk. There is no upload, so there is nothing to wait for.
Nothing is downloaded first. Unlike the video tools, image conversion uses what is already built into your browser. It starts instantly.
Your machine does the work. The image is drawn to a canvas and written out in the new format, which takes a fraction of a second.
Save the result. The file goes straight to your downloads folder and the original is untouched.
Which format suits which picture
PNG stores every pixel exactly and never discards anything. That is precisely right for screenshots, logos, diagrams and anything with sharp edges or flat colour, where JPEG artefacts would be obvious.
It is precisely wrong for photographs. A photo has no flat areas and no crisp edges, so PNG's lossless approach buys you nothing visible while multiplying the file size several times over.
The rule that holds nearly always: photographs go to JPEG, everything with text or hard edges stays PNG. A screenshot converted to JPEG develops a faint halo around every letter.
Transparency does not survive
JPEG has no alpha channel, so anything transparent in the PNG has to become something. This fills it with white, which is the right answer far more often than black. If the transparency matters, the destination for this image is not JPEG.
Common questions
Will quality drop?
JPEG discards some detail by design. At the High setting the difference is invisible in normal viewing; at Small you will see it if you look closely at fine texture.
What happened to the transparent background?
It became white. JPEG cannot store transparency at all.
Should I convert screenshots?
Usually not. Text and sharp edges are what JPEG handles worst — screenshots are better left as PNG.
Does the file get uploaded?
No, it stays on your device throughout.