twineconvert

free · in-browser · no upload

Web of Science to NBIB
Converter

Drop your WOS file. We'll convert it to NBIB 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 .txt, .ciw, .isi

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 WOS 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 NBIB 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 Web of Science → NBIB

What this conversion is actually for

Web of Science (Clarivate) and the older ISI export references as a tagged plain-text file, the format VOSviewer, bibliometrix, and CiteSpace read. This converts that export to NBIB so you can load the records into a PubMed-style citation manager. Title, authors, year, source, volume, issue, pages, DOI, and keywords all carry across. Runs in your browser, nothing is uploaded.

A real example

You ran a Web of Science search, chose Export then Plain Text, and need the records in NBIB for a PubMed-style citation manager. Drop the savedrecs.txt here and get NBIB back.

Troubleshooting

The file is not recognized.

Export from Web of Science as Plain Text (the tagged format starting with FN and PT lines), not as Tab-delimited or BibTeX. Each record must end with an ER line.

Formats involved

About WOS and NBIB

WOS, WOS

WOS is a file format we support converting. Detailed format information is being added, for now, drop your file in the converter above and you'll get the conversion you came for.

How to open

Most operating systems open this format with a default application; if not, search for a free reader/viewer for the format.

NBIB, PubMed citation format

NBIB is the National Library of Medicine's citation format for PubMed exports. Structurally identical to RIS with a different tag dictionary (PMID, FAU, JT, AID instead of ID, AU, JO, DO). Reference managers treat .nbib files as RIS-flavored with PubMed-specific extensions. The format ships with PubMed downloads and the major systematic-review tools (Covidence, Rayyan).

How to open

Zotero, Mendeley, EndNote, Papers, all read NBIB natively. Plain text in any editor.

You may also need

More tools people use alongside this one

Related tools

Convert other files to NBIB

Convert your WOS to other formats

FAQ

Common questions

Is this Web of Science → NBIB 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 WOS to NBIB?

File interchange. PubMed citation export; systematic review imports. The most common reason to convert is compatibility, NBIB works in places where WOS doesn't, or vice versa.

How do I open a WOS file in the first place?

Most operating systems open this format with a default application; if not, search for a free reader/viewer for the format.

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.