BibTeX to JNG Converter
FileFlip converts BibTeX to JNG entirely inside your browser, using Pandoc, MuPDF and 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 BibTeX file to JNG?#
- Drop your BibTeX 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 JNG and the conversion starts on its own. FileFlip downloads 79.9 MB of WebAssembly the first time and nothing after that, then runs Pandoc, MuPDF and ImageMagick on your own machine.
- Save the JNG file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting BibTeX to JNG lose quality?#
Yes, in the sense that text stops being text. Each BibTeX page is rendered to pixels and handed to JNG, so the result looks right and can no longer be selected, searched, or reflowed.
Is it safe to convert BibTeX files online?#
Yes, because nothing is uploaded. FileFlip converts BibTeX 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 BibTeX to JNG actually does to the file#
Converting BibTeX to JNG runs on Pandoc, MuPDF and ImageMagick, downloads 79.9 MB of WebAssembly the first time and nothing after that, renders each page to pixels, keeps page layout, and drops selectable text and transparency.
| Engine | Pandoc, MuPDF and ImageMagick |
|---|---|
| Conversion path | 3 steps: BibTeX → HTML → PNG → JNG |
| Downloaded to your browser | 79.9 MB, once, then cached by your browser |
| Quality | Text becomes pixels |
| You get back | One image per page, zipped when the source has several |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| Selectable text | Dropped | The target format has nowhere to put it. |
| Page layout | Kept | Carried through into the converted file. |
| Transparency | Dropped | The target format has nowhere to put it. |
Worth knowing before you start:
- pages render at twice their point size in opaque RGB, roughly 144 DPI, with no transparency
- reflowable input is laid out on a fixed 595x842pt page at 11pt before anything else happens
- the file passes through HTML on the way, so anything HTML cannot express does not survive
What is a BibTeX file?#
A BIB file is a BibTeX bibliography database, plain text listing typed reference entries such as @article and @book that the bibtex program formats into a document's citations and reference list.
Keep a bibliography as BibTeX when it's cited from a LaTeX document, since bibtex and biblatex read the format natively.
Convert BibTeX to RIS when moving citations into a reference manager or database that doesn't read BibTeX directly.
What is a JNG file?#
A JNG file holds a single still image whose colour data is compressed as baseline or progressive JPEG inside the same chunk-based container PNG uses, with an optional PNG- or JPEG-encoded alpha channel for transparency.
There's little reason to create a new JNG file today; the format only makes sense inside an existing MNG animation that already mixes JPEG and PNG frames.
Convert JNG to JPG or PNG for anything meant to display in a browser, since none of the major browsers render JNG natively.
BibTeX to JNG questions people ask#
What program opens a .bib file?
A .bib file is plain text, so it opens in any editor, but reference managers like JabRef, Zotero and Mendeley open it as a structured bibliography with fields for author, title and year rather than raw text.
What's the difference between BibTeX and RIS?
BibTeX is the citation format LaTeX documents cite against, with entries typed as @article or @book. RIS is a tagged format built for reference manager interoperability rather than any one typesetting system. Most reference managers convert between the two on import and export.
Can I edit a .bib file in a plain text editor?
Yes. A BibTeX file is human-readable text, and each entry's fields, author, title, year, journal, are plain key-value pairs, so editing one directly is common and doesn't require special software.
What's the difference between BibTeX and BibLaTeX?
BibTeX is the original 1985 citation processor and its .bib file format. BibLaTeX is a newer LaTeX package that reads the same .bib files but does the citation formatting inside LaTeX itself, usually paired with the biber backend instead of bibtex, which handles Unicode and more fields correctly.