JPEG Converter
FileFlip converts JPEG files into 58 other formats entirely inside your browser, using ImageMagick, MuPDF and Pandoc compiled to WebAssembly. The JPEG file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert a JPEG file?#
- Drop your JPEG file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert JPEG files online?#
Yes, because nothing is uploaded. FileFlip converts JPEG files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a JPEG file#
FileFlip converts JPEG into 58 formats with ImageMagick, MuPDF and Pandoc, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | Image Files |
|---|---|
| File extension | .jpeg |
| FileFlip support | Read and written |
| Conversions available | 58 |
| Engines | ImageMagick, MuPDF and Pandoc |
| Downloaded to your browser | 14.1 MB on the first conversion, then cached |
What is a JPEG file?#
.jpeg and .jpg are the same JPEG-compressed image format under two different extension spellings, a split that dates to the three-character extension limit of MS-DOS and early Windows.
Save an image as .jpeg over .jpg when a system, script, or personal convention specifically expects the full four-letter extension; the image data itself doesn't care which one is used.
Rename or export as .jpg instead of .jpeg when a target system, upload form, or older piece of software only recognizes the three-letter extension, which is the more common expectation today.
The JPEG file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
JPEG questions people ask#
What's the difference between .jpeg and .jpg?
There is no difference in the image data. Both extensions point to the same JPEG-compressed file format; the file's pixels, compression, and quality are identical either way, only the name on the extension changes.
Why does JPEG have two spellings of its extension?
MS-DOS and early Windows used the FAT filesystem's 8.3 naming rule, which limited every file extension to three characters, so the four-letter '.jpeg' wouldn't fit. Software on those systems saved files as '.jpg' instead, while Unix and early Macintosh systems, which had no such limit, kept the full '.jpeg' spelling the JPEG committee had used in its own 1992 documentation.
Why do people still use .jpg if the 8.3 limit is gone?
Windows removed the three-character extension limit in 1995 with long filename support in Windows 95, but by then .jpg was already the default on the world's most common desktop operating system. Habit, existing software defaults, and camera firmware kept it the more common spelling even after the technical reason for it disappeared.
Does renaming a .jpeg file to .jpg change anything?
No. Renaming the extension only changes the filename, not the bytes inside the file, so a .jpeg renamed to .jpg opens and displays exactly the same image. Any image viewer or editor that reads one extension reads the other.
Which extension should I use, .jpg or .jpeg?
.jpg is the safer default because a few older tools and upload forms still only recognize three-letter extensions, but .jpeg works everywhere modern. Pick whichever a target platform expects, or default to .jpg since it's the more widely assumed spelling.