What happens when you convert JPEG to JPG
- JPEG and JPG are the same format with different extensions, so nothing is re-encoded. The file is copied byte for byte and saved with a .jpg extension.
- Because the bytes are identical, the JPG has exactly the same quality, dimensions and size as the JPEG.
How to convert JPEG to JPG online
- Press "Choose JPEG files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
- Adjust the settings if you need to. Lower quality gives a smaller file.
- Press "Convert to JPG". Images convert in a second or two each.
- Save each JPG with its download button. Close the tab and every trace of the files is gone from memory.
Why convert JPEG to JPG?
JPEG files usually come from camera photos, scanned documents and web images. People convert them to JPG because JPG opens everywhere and keeps photos small, which is why upload forms and email favour it.
In short, JPEG is good at what it was made for, and JPG is the more practical choice when the file has to open, upload or print somewhere else. JPEG opens in every browser and image viewer, while JPG opens in every browser and image viewer.
How to convert JPEG to JPG on Windows, Mac, iPhone and Android
On Windows
Open this page in Chrome, Edge or Firefox, drag your JPEG files in from File Explorer, and press Convert. Each JPG is saved to your Downloads folder. Paint can also re-save an image as JPG with Save as, provided Windows can open the JPEG in the first place.
On a Mac
Safari, Chrome and Firefox all work. Drag the JPEG files from Finder onto the drop zone and the JPG files land in Downloads. Preview can do single images too: open the file, choose File, then Export, and pick JPEG.
On iPhone and iPad
Open the page in Safari and tap Choose JPEG files. You can pick from Photos or from the Files app. The converted JPG appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Image.
On Android
Open the page in Chrome, tap Choose JPEG files and pick them from Files or your gallery. The JPG is saved to the Download folder, where any file manager can find it.
JPEG vs JPG: the differences
| JPEG | JPG | |
|---|---|---|
| Full name | Joint Photographic Experts Group image | Joint Photographic Experts Group image |
| Type | image | image |
| Created by | the Joint Photographic Experts Group | the Joint Photographic Experts Group |
| First released | 1992 | 1992 |
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Vector or raster | Raster | Raster |
| Colour | 24-bit colour, 16.7 million colours | 24-bit colour, 16.7 million colours |
| In a browser | opens in every browser and image viewer | opens in every browser and image viewer |
| Common uses | camera photos, scanned documents and web images | camera photos, web images and email attachments |
| MIME type | image/jpeg | image/jpeg |
About JPEG and JPG files
What is a JPEG file?
JPEG and JPG are the same format. The three-letter extension dates from old Windows systems that only allowed three characters after the dot, and both names are still in use.
What is a JPG file?
JPG discards fine detail the eye is least sensitive to, which is why a photo shrinks to a tenth of its raw size but text and sharp edges pick up blocky artefacts. Every re-save at a lossy setting throws away a little more.
JPEG to JPG not working? Common problems
- Colours look slightly different. Browsers convert images to the standard sRGB colour space when they decode them, so wide-gamut and CMYK images can shift a little.
- A phone photo comes out upright even though it looked sideways elsewhere. That is correct: the rotation stored in the photo is applied during conversion, so the JPG is always the right way up.
- The file is bigger than expected. It is not: the JPG is the same size as the JPEG, byte for byte.
Convert JPEG to JPG from the command line
If you work in a terminal, ImageMagick converts JPEG to JPG in one line:
magick input.jpeg -quality 90 output.jpgTo convert every JPEG in a folder at once, use magick mogrify -format jpg *.jpeg. The converter on this page does the same job without installing anything.
JPEG to JPG converter FAQ
Will I lose quality converting JPEG to JPG?
No. JPEG and JPG are the same format, and the file is copied without being re-encoded.
Why is the JPG a different size from the JPEG?
It is not: the JPG is the same size as the JPEG, byte for byte.
Are my JPEG files uploaded anywhere?
No. The conversion runs inside this browser tab using your browser's own image decoder, so your files stay on your device. You can disconnect from the internet after the page has loaded and it still works.
Can I convert several JPEG files to JPG at once?
Yes. Select or drop as many files as you like; they are converted one after another and each gets its own download button.
How do I open a JPG file?
JPG opens in every browser and image viewer. JPG is common for camera photos, web images and email attachments.
Is this JPEG to JPG converter free?
Yes. There is no sign-up, no watermark and no limit on how many files you convert. The site is paid for by advertising, and because conversions run on your device there is no server cost per file.
Can I convert JPEG to JPG on my phone?
Yes. The converter works in Safari on iPhone and iPad and in Chrome on Android. Converted files are saved to the Downloads folder.