Short answer: Knowing how to check journal indexing directly in Web of Science, Scopus, and PubMed is essential for authors to ensure their manuscript is published in a verified, legitimate venue.
How to Check Journal Indexing in Web of Science and Scopus
Journal websites sometimes list databases they are “indexed in” that are inaccurate, outdated, or refer to low-credibility directories rather than major citation databases. Verifying indexing directly through the source database takes a few minutes and removes any ambiguity — this matters most when evaluating an unfamiliar journal, as covered in our predatory journal guide.
Step-by-Step: Checking Web of Science Indexing
- Go to Clarivate’s Master Journal List search tool
- Search by exact journal title or ISSN
- Confirm which specific index the journal appears in — Science Citation Index Expanded (SCIE), Social Sciences Citation Index (SSCI), Emerging Sources Citation Index (ESCI), or Arts & Humanities Citation Index (AHCI)
- Note that ESCI-only journals do not currently receive a Journal Impact Factor, unlike SCIE/SSCI journals — see our Journal Impact Factor explainer for what “citable” indexing actually requires
Step-by-Step: Checking Scopus Indexing
- Go to the Scopus Source List, available as a downloadable spreadsheet or through the Scopus search interface
- Search by title or ISSN
- Check the subject category and confirm active/current indexing status — some journals are discontinued or suspended from Scopus after coverage began
- Note the CiteScore value if available, and compare with our Scopus vs Web of Science guide to understand what that number represents
Step-by-Step: Checking PubMed / MEDLINE Indexing
- Search the NLM Catalog, not PubMed itself, since the catalog specifically shows indexing status
- Distinguish between three tiers: journals in MEDLINE (fully indexed, MeSH-tagged), journals in PubMed Central only (full-text archive, not necessarily MEDLINE-indexed), and journals merely linked from PubMed search results without formal indexing
- Confirm current status, since some journals are added to MEDLINE only after a review period — earlier issues may not be indexed retroactively
Red Flags That Suggest a Journal Is Misrepresenting Its Indexing
- Indexing claims that link to the journal’s own PDF certificate instead of the database’s official site
- Listing indexing in databases with no real citation impact or vague names designed to resemble legitimate ones
- No verifiable ISSN, or an ISSN that doesn’t match records in the indexing database
- Vague claims like “indexed internationally” without naming a specific, checkable database
Quick Verification Checklist
- Searched the journal directly on the official database tool (not the journal’s own claims page)
- Confirmed the specific index tier (e.g., SCIE vs ESCI, MEDLINE vs PMC-only)
- Checked that the ISSN matches across the journal site and the database record
- Verified indexing is current, not historical or discontinued
Key Takeaways
- Always verify indexing through the database’s own official search tool, not the journal’s website
- Web of Science, Scopus, and PubMed each have different tiers of coverage that carry different weight
- ESCI and PMC-only listings are real but do not carry the same status as SCIE/SSCI or MEDLINE indexing
- Cross-check ISSNs and current status to catch misrepresented or discontinued listings
Looking to verify an official score? Use our Journal Impact Factor Lookup Tool to check verified metrics directly.