WebP to JPG converter
Your images never leave this device
JPG is the format nothing refuses. Converting a WebP to JPG re-encodes one lossy format as another, which costs a little quality and gives you a file you can email, print, hand to a photo lab or open in software from twenty years ago. Two things change on the way: transparency is replaced with white, and the file usually gets bigger.
How to convert WebP to JPG
The file growing surprises people, and it is the entire reason WebP exists. At the same visible quality WebP holds a photograph in roughly a quarter to a third fewer bytes than JPEG does. Re-encoding one as the other hands that saving back. If size is what you are after, this is the wrong direction; if compatibility is, it is the right one and the extra bytes are what it costs.
JPEG has no alpha channel, so a WebP with a transparent background needs something behind it, and this tool paints white before drawing. That step is not cosmetic. Without a matte, a canvas encodes transparent pixels as black, which is where the black rectangle behind a converted logo comes from in other converters. White suits most images and is wrong for a logo destined for a dark page, in which case the file should stay a WebP or become a PNG.
Both formats are lossy, so this stacks a second round of quantisation on the first. At quality 90 that is invisible at normal viewing sizes. Below about 70 it starts to show where JPEG always shows first: in a gradient across a sky, and in flat areas of a single colour, where the eight-by-eight block structure begins to appear as faint squares.
What people use it for
- Attaching a downloaded image to an email that has to open at the other end
- Sending a picture to a print shop or a photo lab
- Getting an image onto a TV, a photo frame or a camera that only reads JPG
- Flattening a transparent WebP onto white deliberately rather than by accident
- Filling in a form that accepts JPG and nothing else
Questions
It is filled with white before the image is drawn. JPG cannot store transparency at all, and without a matte those pixels would encode as black.
Usually a little bigger. WebP compresses more efficiently than JPG at the same visible quality, so the same picture takes more room as a JPG.
Slightly, because it is re-encoded. At quality 90 you will not see it unless you zoom in and compare the two directly.
90 is a good default. 80 is fine for email. Below 70, skies and flat colour start to show the block structure JPEG works in.
Yes, as many as you like. There is no limit because there is no server; your own device does the work.
No. The output is written from a canvas, which holds pixels and nothing else, so camera data and any GPS coordinates are dropped.
Yes. The three-letter extension is a leftover from MS-DOS filename limits. The files are identical.