Image tool
Convert JPEG to JPG
Here is the part nobody tells you: .jpeg and .jpg are the same format. There is nothing to convert. This tool renames the extension and hands the file straight back — byte for byte identical, no quality lost, and it never leaves your browser.
- 100% free
- No signup
- Never uploaded
Drop your files here
or click to browse from your device
Supports JPG · Max 100 MB per file · Up to 500 pages
- Secure & privateYour files are never shared
- Lightning fastMost images in under a second
- High qualitymozjpeg and libvips under the hood
- Works everywhereAny device, any browser
Output quality
Identical to the input, in the strictest possible sense: this is a byte-for-byte copy with a different filename. No decoder ever opens the image, so there is no re-compression, no colour shift, no chroma subsampling change, and no loss of EXIF, ICC profile or orientation flag. That is worth stating plainly because it is unusual for this search term — a great many tools ranking for "jpeg to jpg" pass your photo through a full decode and re-encode, which visibly degrades it, and they do it to solve a problem that does not exist. The only thing this changes is three characters in the filename. We do check the file really is a JPEG inside before renaming it, because renaming a mislabelled PNG would create a file that lies about itself, which is the exact kind of trouble you came here to escape.
See what this tool actually did to real files — median size change, speed and sample size, published whichever way the numbers fall.
Privacy: this tool does not upload your file
The file is never sent anywhere
This tool is JavaScript running in your tab. Your document is read from your disk into browser memory and never transmitted — not to us, not to anyone. It handles files up to 100 MB and 500 pages.
You can check this yourself
Load this page, turn off your internet connection, and run the tool. It still works. That is not a promise about our conduct — it is something you can verify in ten seconds.
Nothing to delete afterwards
There is no upload, no job record and no copy on any server, so there is no retention period. Close the tab and the working copy is gone with it.
No third parties involved
The PDF engine and its fonts are served from this domain rather than a public CDN, so no outside company sees that you used this page, or when.
Input, output and limits
Every figure below is read from the same configuration the server enforces, so this page cannot promise a limit the system will refuse.
- Input formats
- JPGWhat is JPG?
- Output format
- JPGWhat is JPG?
- Maximum file size
- 100 MB per file
- Maximum pages
- 500 per run
- Multiple files
- Yes — several files at once
- Price
- Free, with no account and no watermark
- Processing
- Inside your browser — the file is never uploaded
- Engine
- pdf-lib, running inside your browser
- File retention
- None — nothing is uploaded, so there is nothing to keep or delete
Common use cases
An upload form that only accepts .jpg
Old portals and print shops sometimes check the extension rather than the file. This gets you past that in seconds.
A folder of photos from a camera or phone
Some devices write .jpeg by default. Rename the whole batch at once instead of one at a time.
Keeping a library consistent
Mixed extensions make sorting and scripting awkward, even though the files are identical.
Working on a device where you cannot rename files
Phones and locked-down work machines often hide extensions entirely.
Troubleshooting
- It says my file is not actually a JPEG
- The contents do not match the name — it is most likely a PNG or HEIC that was given a .jpeg extension somewhere along the way. Renaming it would make the mismatch harder to spot, so use a real converter like PNG to JPG instead.
- The system still rejects my file
- Then it was not the extension. Check the file size limit and the pixel dimensions — those are the two other things upload forms silently refuse on.
- I wanted the file to be smaller
- Renaming cannot change the size, because it does not change the image. Use Compress JPG for that.
Something else went wrong? Tell us what happened — a person reads every report, and that is how this list gets longer.
Frequently asked questions
Browse image toolsWait — is there really no difference?
None at all. The two are the same file format; only the extension differs. The three-letter version is left over from MS-DOS, which allowed filenames of eight characters plus a three-character extension, so "jpeg" had to be shortened to "jpg". Both have meant exactly the same thing ever since. Open a .jpeg in any image viewer and it works, because the program reads the contents, not the name.
Then why does this tool exist?
Because plenty of systems still insist on one spelling. Old upload forms, some print shops, certain school submission portals and a few pieces of enterprise software check the extension rather than the file. That is their bug, not yours, but you still need the file accepted today. So this gives you the renamed file — and tells you the truth while it does.
Does the image lose quality?
No, and this is where we differ from most tools serving this search. JPEG is a lossy format, so every decode-and-re-encode cycle throws away a little more detail. Many "JPEG to JPG converters" do exactly that — degrading your photo to solve a problem that does not exist. We never decode the image. The bytes you get back are identical to the bytes you put in, EXIF and all.
Could I just rename the file myself?
Yes, and if you are comfortable doing that, please do — it takes two seconds and no website. This is here for people on phones, on locked-down work computers where file extensions are hidden, or with a folder of two hundred files to do at once.
Is my photo uploaded?
No. This runs entirely in your browser tab. Given the tool does nothing but rename, sending your photo to a server for it would be absurd — and we would still have to ask you to trust us with it.
Where does my file go when I use this tool?
Nowhere. This tool is JavaScript that runs inside your browser tab, so the file is read straight from your disk into memory on your own device and never sent to us. There is no upload, no job record and no copy to delete afterwards — close the tab and the working copy goes with it. You can confirm this yourself: load the page, disconnect from the internet, and the tool still works. It handles files up to 100 MB and 500 pages, and those limits come from what one browser tab can hold rather than from anything on our side.