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JPG · PNG · WEBP · AVIF · GIF · HEIC
Convert JPEG to JPG
JPEG and JPG are the same format — the three-letter spelling is a relic of MS-DOS, which allowed only three characters after the dot, and both extensions have coexisted ever since.
How to convert JPEG to JPG
Drop your JPEG files onto the panel above and press Convert. A whole folder at once is fine, and the JPG files download individually or as a single ZIP.
Quality is the one setting worth a glance, and 85 or above is visually indistinguishable from the original for photographs. Conversion here runs at maximum quality by default, so you only need to touch it if a smaller file matters more than fidelity — and if it does, compressing afterwards gives you finer control.
Nothing is uploaded. The decoders and encoders run as WebAssembly inside this page, which is why there is no file-size limit, no queue, and no copy of your image on anyone's server.
Why convert JPEG to JPG?
JPEG and JPG are the same format — the three-letter spelling is a relic of MS-DOS, which allowed only three characters after the dot, and both extensions have coexisted ever since.
The problem is software that doesn't know that: strict upload forms, asset pipelines, and legacy systems sometimes accept only .jpg. Converting here writes a standard .jpg file that satisfies all of them.
| JPEG | JPG | |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Support | Universal — every browser, OS, app, and print service | Universal — every browser, OS, app, and print service |
| Best for | Photographs, and anything that has to open everywhere | Photographs, and anything that has to open everywhere |
What JPG does to file size
Essentially unchanged.
The image is re-encoded at maximum quality with MozJPEG, so the output is occasionally a little smaller than the input — but this is a naming fix, not a compression pass.
Because the formats are identical, no pixel-level change is needed — the point of the exercise is the extension and a cleanly written file. If you also want the file smaller, run it through the JPG compressor instead.
Frequently asked questions
How do I convert JPEG to JPG?
Drop your JPEG files above, choose JPG as the output, and press Convert. The files are decoded and re-encoded at maximum quality inside your browser, then download individually or as a ZIP — no upload, no account, no watermark.
JPEG or JPG: what is the difference?
Nothing, technically — both are the JPEG format, named for the Joint Photographic Experts Group that standardised it in 1992. The .jpg spelling exists because MS-DOS limited extensions to three letters, and it stuck. Any software that can open one can open the other; only rigid upload validators pretend otherwise.
Does converting JPEG to JPG lose quality?
JPG is a lossy format, so the image is re-encoded — at maximum quality, where the difference is imperceptible for photographs. Because the formats are identical, no pixel-level change is needed — the point of the exercise is the extension and a cleanly written file. If you also want the file smaller, run it through the JPG compressor instead.
Can I just rename the file to .jpg?
Yes — and unlike most format pairs, it genuinely works: JPEG and JPG are the same format, so file.jpeg renamed to file.jpg is a perfectly valid JPG. Use this tool when renaming is awkward (a whole folder at once), when a picky system still rejects the file, or when you want the metadata stripped in the process.
Related conversions
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