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Look Up Journal Impact Factor & Quartiles (JCR / CAS)

TL;DR Three steps to look up any journal:

  • 🔧 Click the PaperPop icon in your browser toolbar
  • ⌨️ Type the journal full name or abbreviation (e.g. Nature, JMLR, N ENGL J MED)
  • 🔍 Click Search or press Enter — see impact factor, JCR quartile, CAS partition, Peking Core, etc.
  • 💡 Fuzzy matching + case-insensitive; "The / A / An" are auto-stripped
  • ❌ No results? Likely a new journal, conference proceedings, or unrecognized abbreviation — try the full name instead

Feature Introduction

You can directly search for journal's ranking, journal quartiles, CAS rankings, and other key information within the PaperPop extension.

Search Steps



Step 1: Open Search Interface

  1. Click the PaperPop icon in your browser toolbar 🔧
  2. Find the journal search section in the settings panel

Step 2: Enter Journal Information

Enter journal information in the search box, supporting multiple formats:

Full Journal Name Examples:

  • Nature
  • Science
  • Cell
  • The Lancet
  • Journal of Machine Learning Research

Journal Abbreviation Examples:

  • JMLR (Journal of Machine Learning Research)
  • PNAS (Proceedings of the National Academy of Sciences)
  • N ENGL J MED (New England Journal of Medicine)
  1. After entering the journal name, click the "Search" button 🔍
  2. Or press Enter for quick search

Step 4: View Results

After a successful search, detailed journal information will be displayed

Search Tips 💡

Input Tips

  1. Fuzzy Matching Support: No need to enter the complete exact journal name
  2. Case Insensitive: nature and Nature have the same effect
  3. Automatic Stop Word Processing: Automatically ignores words like The, A, An
  4. Full Name Priority: If journal abbreviations don't yield results, try using the full journal name.

Search Results Explanation

No Results Message

If "No results found" is displayed, possible reasons:

  • Incorrect journal name input
  • Journal not in database (e.g., newly established journals)
  • Journal is a conference proceedings, not within journal database scope

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