JPS to GIF87 Converter
FileFlip converts JPS to GIF87 entirely inside your browser, using ImageMagick compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert a JPS file to GIF87?#
- Drop your JPS file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to GIF87 and the conversion starts on its own. FileFlip downloads 14.1 MB of WebAssembly the first time and nothing after that, then runs ImageMagick on your own machine.
- Save the GIF87 file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting JPS to GIF87 lose quality?#
GIF87 is a lossless format, so nothing further is lost here, but nothing is recovered either. Whatever the JPS encoder already threw away is gone, and the GIF87 file will usually be several times larger for exactly the same content.
Is it safe to convert JPS files online?#
Yes, because nothing is uploaded. FileFlip converts JPS 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 JPS to GIF87 actually does to the file#
Converting JPS to GIF87 runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, writes a lossless file that cannot recover what the source already discarded, and drops EXIF metadata and ICC colour profile.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: JPS → GIF87 |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Lossless output, but nothing is recovered |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| EXIF metadata | Dropped | The target format has nowhere to put it. |
| ICC colour profile | Dropped | The target format has nowhere to put it. |
Worth knowing before you start:
- the target holds at most 256 colours, so a full-colour image is quantised to a palette
What is a JPS file?#
A JPS file is an ordinary JPEG photograph that holds two views of the same scene side by side, one for each eye, flagged as a stereo pair by an APP3 marker that most software simply ignores.
Save a stereo pair as JPS when the destination software, such as StereoPhoto Maker or an anaglyph viewer, reads the APP3 stereo marker and the pair needs to travel as one file.
Convert JPS to a plain JPG when only the flat side-by-side image matters, or split it into two separate JPGs when software needs the left and right views on their own.
What is a GIF87 file?#
A GIF87 file follows the original 1987 Graphics Interchange Format specification that CompuServe published two years before GIF89a added transparency and animation, so it stores a single, fully opaque image using the same LZW compression and 256-color palette as any other GIF.
There's essentially no reason to target GIF87 today; write a plain GIF, which is GIF89a, instead unless a specific tool or test needs the older header.
Convert to GIF89a or PNG when the image needs transparency or animation, since GIF87 supports neither.
JPS to GIF87 questions people ask#
What is a JPS file?
A JPS file is a standard JPEG image containing two side-by-side views of the same scene, one per eye, for stereoscopic 3D viewing. An APP3 marker inside the file identifies it as a stereo pair, but the underlying image data is ordinary JPEG.
How do I view a JPS file in 3D?
Open a JPS file in stereo-aware software like StereoPhoto Maker, which reads the APP3 marker and can display the pair as an anaglyph, a cross-eyed or parallel side-by-side view, or feed it to a 3D display. Most JPS files on the internet use the cross-eyed arrangement, with the right-eye view stored on the left.
Can I open a JPS file like a normal JPEG?
Yes. Because a JPS file is a valid JPEG, any JPEG viewer opens it, but it will show the uncropped double-wide pair as a single flat photo rather than a 3D image, since ordinary viewers don't read the APP3 stereo marker.
What is a GIF87 file?
A GIF87 file follows the original 1987 Graphics Interchange Format specification that CompuServe published before adding transparency and animation in 1989's GIF89a. It stores a single, fully opaque static image.