PNG to JPG Converter

Transparency has to go somewhere

JPEG has no alpha channel, so every transparent pixel must be filled with something. Most converters silently use black, which produces the classic ruined logo on a dark rectangle. Choosing white matches most page backgrounds; choosing the actual background colour of where the image will sit is better still. Decide before converting rather than discovering it afterwards.

The size win is real

For a photograph, JPEG is typically five to fifteen times smaller than the equivalent PNG at visually identical quality. PNG stores every pixel exactly, which is wasted precision on photographic content where the eye cannot detect the difference. This is the main reason to convert.

The conversion is one-way

JPEG is lossy, so the moment you convert, information is discarded permanently. Converting back to PNG restores the file format and none of the data. Keep the PNG if the image is a working master you will edit again.

Quality setting

Around 80 is the sweet spot for photographs: visually indistinguishable from 100 at a fraction of the size. Above 90 the file grows steeply for no visible gain.

Do not convert screenshots or logos

JPEG compresses by discarding high-frequency detail, which is exactly what sharp edges and text are made of. A screenshot converted to JPEG develops visible fringing around every letter and looks dirty. Keep those as PNG, or use WebP, which handles both content types well.

Consider WebP instead

WebP is typically 25 to 35 percent smaller than JPEG at equivalent quality, supports transparency so the flattening problem disappears entirely, and is supported in every current browser.