Convert JPEG to JPG

The honest version: these are the same format, so the right operation is a rename, not a re-encode. Your files pass through byte for byte, which means zero quality loss. Runs in your browser, nothing uploaded.

Your files never leave your browser

Worth knowing: .jpeg and .jpg are the same format

There is no real conversion to do. The two extensions describe identical files — .jpg exists only because early Windows allowed just three characters. This tool renames your files without re-encoding them, so no quality is lost at all. Any tool that claims to "convert" between them and re-compresses is making your image worse for nothing.

Drop JPEG files here, or click to select

Up to 20 files, 50 MB each

Why two extensions exist at all

The format is JPEG, named after the Joint Photographic Experts Group who standardised it in 1992. MS-DOS and early Windows only allowed three-character file extensions, so.jpeg was truncated to.jpg on those systems. Both spellings survived, and today they are completely interchangeable. Every image viewer, browser and editor treats them identically, because both contain exactly the same bytes.

Why re-encoding here would be a mistake

JPEG is lossy: every time an image is decoded and saved again, a little detail is thrown away permanently, and repeated saves visibly degrade edges and flat colour. So a tool that "converts" JPEG to JPG by re-compressing costs you quality and returns nothing, since the output format is the one you started in. If you actually want a smaller file, that is a different job — use the image compressor, where the tradeoff is deliberate and you control it.

Frequently Asked Questions

What is the difference between JPEG and JPG?

Nothing. They are the same file format with two spellings of the same extension. JPEG is the name of the standard and its committee, the Joint Photographic Experts Group. The three-letter .jpg exists only because early versions of Windows limited extensions to three characters, and the habit stuck.

Does converting JPEG to JPG lose quality?

It should not, and here it does not. Because the formats are identical, the correct operation is a rename, which leaves every byte untouched. Tools that decode and re-encode the image during this "conversion" discard real detail for no benefit, since JPEG is lossy every time it is saved.

Why does my software only accept .jpg?

Some upload forms and older applications match on the literal three-letter extension rather than reading the file header. The file is already valid, so simply changing the extension satisfies them. That is exactly what this tool does.

Can I just rename the file myself?

Yes, and you should feel free to. Editing the extension in your file manager achieves the same result. This tool is convenient for batches, and it checks the file header first so you find out if something labelled .jpeg is secretly a PNG.

What if my file is not really a JPEG?

The tool reads the first bytes of each file rather than trusting the name. If it finds a PNG or WebP wearing a .jpeg extension, it says so instead of renaming it, because a mislabelled file breaks in software that does check the header. Use the image converter to change the format for real.

Related tools