JPEG to JPG, same picture, shorter name.

A JPEG to JPG converter changes the end of a file name from .jpeg to .jpg. For a real JPEG picture that is all there is to it, because JPEG and JPG are the same format. This tool does the rename without touching the picture: it reads the first bytes of each file to be sure it is a JPEG, copies the data as it is, and shows a checksum of the data before and after so you can see nothing changed. No new compression is applied, so there is no loss in quality, and the photo details stored inside the file stay where they are.

How to convert JPEG to JPG

1. Drop your files on Drop JPEG files here, or click to choose, or paste a picture. You can add many at once.
2. Leave Save as on .jpg. Pick Capitals under Letters only if you need .JPG.
3. Check the row. A green Real JPEG label means the file was only renamed.
4. Click Download on a row, or Download all as a ZIP when you added more than one file.
5. To do more, click Add more files. Start over clears the list.

Is there a difference between JPEG and JPG?

No. The data inside is identical. Both endings are listed for the image/jpeg type in the IANA media type registry (checked 27 Oct 2026). That page does not say why there are two, so this page does not either.

The byte count in the table is an example with a 1600 x 1200 photo: it has 78,816 bytes before the rename and 78,816 after. The tool shows the same kind of check for your own file, as the first six bytes of a SHA-256 checksum of the data.

When a rename is not enough

Some files end in .jpeg but are not JPEGs. A screenshot saved as PNG and then renamed is a common case. Renaming such a file does not change what is inside, and a program that looks at the contents will still see a PNG. The tool tells these apart by their first bytes. By default it draws the picture onto a white page and saves a real JPEG. The row then says so, with the new size.

• Transparent areas become white, since JPEG has no transparency.
• The new JPEG is compressed once, so choose High, 95 or Good, 92 under Quality of re-saved pictures when the picture matters.
• Turn off Save other pictures as a real JPEG if you only want real JPEG files to be renamed. The others are then left out with a note.

What the checksum on each row means

A SHA-256 checksum is a short fingerprint worked out from every byte of a file. Change one byte and the fingerprint changes completely. The tool works it out on your original and again on the file it hands back, and shows the first six bytes of it in the row. When the two match, the data is the same, and the only thing that moved is the name. It is a check you can repeat with any tool that shows SHA-256.

Worked example: a mixed batch

Drop three files: trip.jpeg, logo.jpeg and scan.jpeg. The first is a real JPEG, so it becomes trip.jpg with the same size in bytes. The second turns out to be a PNG with a transparent background, so the row says PNG, re-saved. It becomes logo.jpg on a white background, saved once at the chosen quality. The third is a real JPEG again. The summary above the list then reads three files ready, two only needed a new name, one had to be re-saved. Click Download all as a ZIP to take them together.

Choosing the quality of a re-saved picture

The quality choice only matters for files that were not JPEGs. Real JPEGs never go through it.

Compressing a JPEG again always costs a little, so if you still have the original PNG, save from that rather than from a copy that was already re-saved.

Common problems

• A website still refuses the file. Some forms read the contents, not the name. Check the row label. If it says Real JPEG and the form still refuses it, the limit is probably size or pixels, not the name.
• An iPhone photo ends in .heic. That is not a JPEG. Use HEIC to JPG.
• Two files have the same name. The second one gets (2) in its new name, so nothing is overwritten in the ZIP.
• A picture will not open. The file may be damaged or cut short. The tool can still rename it, because it only checks the first bytes.

To make a JPEG smaller instead, use the image compressor. To turn a screenshot into a JPEG with a chosen quality, try PNG to JPG.