The tools on this page are meant to help research integrity specialists and other sleuths do a quick spot-check of suspected hijacked journals. While they use the Crossref API to gather metadata about journals, publishers, and individual works, they are not a replacement for the API. Please do not try to use this website for large-scale investigations; Crossref has many options for retrieving metadata at scale

Click here to learn more about the motivations for this project. If you are a research integrity specialist and have suggestions for how to improve these tools, please reach out to me on bluesky or by email cnsodano@gmail.com

If there are any bugs, let me know and I'll fix them

Hijacked Journal Detection Toolbox

It seems like javascript is disabled in your browser. Here are the instructions how to enable JavaScript in your web browser, which will allow you to use the interactive tools below.

Type a journal title search query to search for duplicate journal titles (often signs of hijacking) registered in Crossref's database. The tool will show only up to the first 30 duplicate listings (double click submit to try a different query. May take a while to load). This is not a comprehensive tool. For example, not all journals register DOIs through Crossref. If your query is overly broad ("Science", e.g.) it's possible it will fail to detect due to technical reasons¹. This will be solved soon.

Input a DOI to find the Crossref Member that Submitted it:

Failed to find member, either because the query you submitted was not a DOI or had an invalid prefix. To check if the DOI is registered through crossref, try: https://api.crossref.org/works/{doi}/agency

Input a valid Crossref Member ID to find all the journals it publishes. A maximum of 100 journals will be displayed. (may take a few seconds to load for high-volume publishers):

Loading...this can sometimes take up to 10 seconds or more

Input a publisher ID and find all of its registered journals that have already been registered (possible hijacked journals):

Footnotes

Currently I am not using cursors as I expected users to have a particular journal in mind. If none of the first 30 results for the query match exactly, it will not (as of 4/8/25) search the next page of results. This will be fixed. The most up-to-date code will be available here ↩︎