JPS to DocBook Converter
FileFlip converts JPS to DocBook entirely inside your browser, using ImageMagick, MuPDF and Pandoc 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 DocBook?#
- 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 DocBook and the conversion starts on its own. FileFlip downloads 79.9 MB of WebAssembly the first time and nothing after that, then runs ImageMagick, MuPDF and Pandoc on your own machine.
- Save the DocBook file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting JPS to DocBook lose quality?#
No. The JPS picture is placed into the DocBook document at its full resolution, so every pixel reaches it intact. What you give up is that it becomes a picture inside a document rather than text.
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 DocBook actually does to the file#
Converting JPS to DocBook runs on ImageMagick, MuPDF and Pandoc, downloads 79.9 MB of WebAssembly the first time and nothing after that, places the picture into the document at full resolution, and drops EXIF metadata and ICC colour profile.
| Engine | ImageMagick, MuPDF and Pandoc |
|---|---|
| Conversion path | 3 steps: JPS → PNG → HTML → DocBook |
| Downloaded to your browser | 79.9 MB, once, then cached by your browser |
| Quality | Pixels preserved |
| 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 picture is placed in the document as a picture; no text is recognised out of it
- the file passes through HTML on the way, so anything HTML cannot express does not survive
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 DocBook file?#
A DBK file is a DocBook document, XML markup that describes a technical document's structure and meaning, such as chapters, sections, and code listings, rather than its visual layout, so one source can be styled into a printed book or a web page.
Write in DocBook when producing technical documentation that has to publish to multiple outputs, such as print, web, and help, from one validated source.
Convert DocBook to another format when the reader only needs the finished document and doesn't need to maintain the structured XML source.
JPS to DocBook 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 opens a .dbk file?
A .dbk file is DocBook XML, which is plain text, so any text or XML editor opens it, though tools like Oxygen XML Editor or Visual Studio Code with an XML extension add validation and structure awareness. Converting it to HTML or PDF is the usual way to read it as a finished document.