.jpeg

What is a .jpeg file?

JPEG is the full-length extension for JPG files — three extra characters, zero difference.

Safe format
Type Image
By Joint Photographic Experts Group
MIME image/jpeg

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What is it

You have a file with a .jpeg extension instead of .jpg. They are the same format, the same compression, the same everything. The only reason both extensions exist is that early versions of Windows and DOS limited file extensions to three characters. The three-letter .jpg became standard, but .jpeg (the full name) has always been equally valid.

Some cameras, particularly older digital cameras and some smartphones, save photos with the .jpeg extension. macOS tends to use .jpeg in some contexts. Web servers and image editors handle both identically. No application on earth treats .jpg and .jpeg differently — they share the same MIME type (image/jpeg) and the same file structure.

Every image viewer, every browser, and every operating system handles .jpeg files. If an upload form or application rejects .jpeg, rename to .jpg — but this is extremely rare with modern software. For compression, <a href="https://fwip.app/tools/compress-image/">fwip</a> handles .jpeg files exactly like .jpg.

Technical details
Full Name
JPEG Image
MIME Type
image/jpeg
Developer
Joint Photographic Experts Group
Magic Bytes
FF D8 FF
Safety
.jpeg is a known, safe format.
What opens it
Every image viewer
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FAQ
Is there any difference between .jpg and .jpeg?
No. They are the same format. The three-letter .jpg extension exists because early Windows/DOS only supported three-character extensions. .jpeg is the full name. Every application treats them identically.
Should I use .jpg or .jpeg for my website?
Either works. Convention leans toward .jpg because it's shorter. The file content, quality, browser handling, and MIME type are identical regardless of which extension you use.
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