twineconvert

free · in-browser · no upload

EndNote XML to CSL-JSON
Converter

Drop your EndNote XML file. We'll convert it to CSL-JSON right here in your browser, your file never leaves your device.

or drop your file

Select your file here to get started

or drop your file here.

Accepts .xml

nothing uploaded no file size cap no signup

How it works

Three steps. No upload, no signup.

  1. 1

    Drop your file

    Click the dropzone above or drag a EndNote XML from your desktop. Files of any size, there's no upload, so there's no upload limit.

  2. 2

    Convert in your browser

    The conversion runs entirely in this tab using JavaScript and WebAssembly. Your file never touches our servers, we don't have any.

  3. 3

    Download

    Get your CSL-JSON the moment the conversion finishes. Convert another, or close the tab.

Files stay on your device

Your file is never uploaded. The entire conversion runs in your browser using WebAssembly. We can't see what you convert because we have no server to see it.

No file size limit

Server converters cap free users at 1-2 GB and gate larger files behind a paid plan. Since nothing uploads, our limit is whatever your browser can handle.

Free, no signup, no ads on conversions

No account required. No watermark on the output. No queue. Drop a file, get a converted file.

Why convert EndNote XML → CSL-JSON

What this conversion is actually for

EndNote XML is EndNote's XML library export; CSL-JSON is the Citation Style Language JSON that Zotero, pandoc, and citeproc speak. This converts one to the other through a shared bibliographic model, so every field that round-trips (title, authors, year, journal, volume, pages, DOI) carries across without re-keying. Runs entirely in your browser, no upload.

A real example

You have an EndNote library exported as XML and your next tool wants CSL-JSON. Drop the file here and get a clean CSL-JSON file back in one step.

Troubleshooting

Some references are missing fields after conversion.

Fields only carry across if the source EndNote XML actually contained them. Open the source and confirm the field is populated; CSL-JSON cannot add data that was not there.

Formats involved

About EndNote XML and CSL-JSON

EndNote XML, EndNote XML export

EndNote XML is the structured XML format used by EndNote (Clarivate's reference manager) for backups and interchange. Each <record> wraps contributors, titles, dates, and identifiers with explicit semantic tagging, much richer than RIS or BibTeX. Useful when you want to preserve EndNote's full data model (custom fields, attached files, ratings).

How to open

EndNote (paid). Zotero and Mendeley import EndNote XML cleanly. Any text editor for inspection.

CSL-JSON, Citation Style Language JSON

CSL-JSON is the modern interop format for citation metadata. Zotero exports it natively (right-click a collection → Export → CSL JSON). Pandoc consumes it as `--bibliography file.json` for reference rendering. Every major reference manager (Zotero, Mendeley, Citavi, Papers, Bookends) reads or writes it. Defined by the Citation Style Language project; covers ~100 fields across journals, books, chapters, theses, software, datasets, and more. The de-facto replacement for BibTeX in modern academic toolchains.

How to open

Any JSON viewer or text editor. Zotero imports via File → Import → CSL JSON. Pandoc references it as bibliography input. JabRef, Citavi, and Bookends all accept CSL-JSON drop-ins.

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FAQ

Common questions

Is this EndNote XML → CSL-JSON converter really free?

Yes. No signup, no watermark, no daily file count limit. Every conversion runs in your browser, your file never touches our servers because there are no servers.

Where does my file go when I convert it?

Nowhere. The conversion runs entirely in your browser using JavaScript and WebAssembly. Your file is never uploaded to our servers. We don't have any servers handling files, there's nothing for us to log, store, or accidentally leak.

What's the maximum file size?

Whatever your browser can hold in memory. Practically, this means a few hundred MB on most computers, significantly larger than the 1-2 GB caps that server-upload converters charge for. Very large files (multi-GB) may require closing other browser tabs first.

Why convert EndNote XML to CSL-JSON?

EndNote backup; cross-platform reference-manager migration. Cross-tool bibliography exchange between reference managers. The most common reason to convert is compatibility, CSL-JSON works in places where EndNote XML doesn't, or vice versa.

How do I open a EndNote XML file in the first place?

EndNote (paid). Zotero and Mendeley import EndNote XML cleanly. Any text editor for inspection.

Does this work offline?

Once the page is loaded, the conversion itself runs entirely offline. The first time you use a tool, your browser downloads the conversion library (a one-time cache). If you reload while offline, the page won't load, but you can install the site as a Progressive Web App for full offline use.

Can I convert multiple files at once?

Single file at a time for now. Batch conversion is on the roadmap, for now, drop one file, download the result, then convert the next.