JPI (Jurnal Pustaka Indonesia) is a peer-reviewed journal publishing original research and critical scholarship in Language Studies, including theoretical linguistics, applied linguistics, language education, and language-based literary and discourse studies. The journal welcomes manuscripts addressing any language (e.g., Indonesian, English, Arabic, local and indigenous languages, and other world languages) and encourages comparative, cross-linguistic, and interdisciplinary perspectives.

The journal covers to:

1. Core/Theoretical Linguistics: phonetics & phonology; morphology; syntax; semantics; pragmatics; typology; historical linguistics.
2. Sociolinguistics & Language in Society: multilingualism; language variation; language policy and planning; linguistic landscape; language and identity; discourse in digital media.
3. Psycholinguistics & Language Acquisition: first/second language acquisition; bilingualism; cognitive aspects of language processing.
4. Discourse, Text, and Communication: discourse analysis; conversation analysis; rhetoric; genre studies; pragmatics in interaction; media discourse.
5. Corpus & Computational Approaches: corpus linguistics; digital linguistics; computational linguistics/NLP applications when grounded in language research questions.
6. Applied Linguistics & Language Education: language teaching methodology; curriculum and materials development; language assessment and evaluation; classroom discourse; ESP/EAP; technology-enhanced language learning.
7. Literature and Cultural Studies (Language-Centered): stylistics; narratology; literary discourse; comparative literature; translation studies; critical theory with explicit language/textual analysis.
8. Philology and Manuscript Studies: textual criticism, editing, and interpretation of manuscripts across traditions/languages.

Out of scope: manuscripts focusing purely on general education management, non-language pedagogy, or non-linguistic studies without a clear language/text/discourse contribution.