What is APC and why are some journals free for authors?

APC (Article Processing Charge) is a fee some open-access journals charge authors to cover publication costs. "Diamond Open Access" journals charge neither authors nor readers — funding comes from institutions or grants. All 507 journals on Tadqiq.uz have zero APC for authors.

Do articles in free journals count for academic certification in Uzbekistan?

Yes, if the journal is on the OAK (HAC) list for Uzbekistan. Many free DOAJ journals are also Scopus-indexed. Always verify a journal's OAK status on Tadqiq.uz before submitting.

How do I tell a legitimate free journal from a predatory one?

All journals in Tadqiq.uz's database are DOAJ-verified — DOAJ is an authoritative directory of legitimate open-access journals with quality checks. Use Tadqiq.uz's journal checker to confirm any journal's status across Scopus, DOAJ, and the OAK database.

No APC — free publication

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