How do I convert JPEG to JPG?

Add your .jpeg files above. The output is already set to JPG and Fast mode, so each file is simply handed back with a .jpg ending.

Is there any difference between JPEG and JPG?

Only the spelling of the ending. Both name the same image format, which is why this page does not need to re-encode anything.

Can I just rename .jpeg to .jpg myself?

Yes. The format is the same, so a hand-made rename works just as well. What this page adds is speed with many files: sign in free and up to 20 go in one batch, and on Fast the file contents stay untouched.

Will my photo lose quality?

Not with Fast: the picture data is not touched. Quality only drops if you pick Compact, which trades a little detail for a smaller file.

Can I turn a JPG back into .jpeg here?

No. With JPG as the output, it always writes .jpg, never .jpeg. If a site specifically wants .jpeg, rename the file yourself; the content does not need to change.

Does it work on a phone?

Yes. It runs in a mobile browser just as it does on a computer, and the files stay on the phone.

JPEG to JPG — Same Photo, Just the .jpg Ending

JPEG to JPG: one format, two file endings

The Library of Congress format description for JFIF (“JFIF, JPEG File Interchange Format, Version 1.02”, fdd000018, page last updated 8 May 2024, checked 11 November 2026) lists jpg, jpeg and jpe, among other endings, as filename extensions for this format, and adds: “The extension jpg is most frequently used.” That also answers which one to use: .jpg is the usual choice, and .jpeg only matters where a site asks for it by name. Nothing inside the file depends on which ending it carries, so a site that accepts only .jpg no longer turns the picture away because of its ending, and the image itself is left exactly as it was. Upload forms may still check other things, such as file size or pixel dimensions.

Fast keeps camera details; Compact drops them only if it saves a smaller copy

We tested a 443.6 KB photo carrying camera and GPS location data. With Fast, the .jpg was byte-for-byte the original, location included. With Compact (quality 58) it shrank to 176.8 KB, 60% smaller, and the camera and location details were gone. In a second test, a 31.3 KB .jpeg already saved at low quality would have grown when re-saved, so Compact handed back the original file, GPS still inside, and the result line read “Already JPG — kept as is”. To post a photo without its location, choose Compact and look at that line: a size drop means the details are gone, “kept as is” means they are still there.

Capital letters, and names that already end in .jpg

A capitalised .JPEG is handled like a lower-case one: our test file UPPER.JPEG came back as UPPER.jpg with nothing else changed. The starting mode is picked for each file from its own ending when it is added. A .jpeg starts on Fast, because renaming is all it needs. A file whose name already ends in .jpg has nothing to rename, so it starts on Compact and is re-saved smaller, losing its camera and location details if the smaller copy is kept. “Already JPG” describes the picture data, not the name, so it shows up whenever the original is handed back. Mixing both kinds in one batch? The Mode in the settings panel (Fast unless you change it) applies to the whole batch: before “Convert all” runs, every file whose own mode differs from it is listed, ticked to switch, and you can untick any file to keep its own mode; to rename only, leave the .jpg files out.