Methodology

This website is built around structured journal records. Each record may contain a journal title, abbreviation, print ISSN, electronic ISSN, publisher, metric year and a selection of citation-related fields. Not every journal has every field, so the site is designed to leave unavailable values blank or mark them as unavailable rather than inventing a replacement.

Journal matching

ISSN and eISSN are used wherever possible because identifiers are more reliable than title text alone. Title and abbreviation searches are also supported. When a journal has changed its name or publisher, users should confirm the current official record before relying on historical information.

Metric fields

Journal Impact Factor, five-year JIF, Journal Citation Indicator, quartile and category rank are stored as separate fields. They are not interchangeable. In particular, a JCI value is not used as a substitute when a JIF is missing.

Missing and placeholder values

Imported datasets may contain empty fields or placeholders. Search tools are configured to avoid treating common placeholder values such as zero or “N/A” as meaningful JIF values when filtering journals.

Updates and corrections

Journal data can change from one annual release to another. Metric year is therefore important. When the site receives a documented correction, the relevant record may be updated while preserving the principle that formal metric verification belongs with the original provider.