Overall, and is fully compliant with the national curriculum. 4.2 Accessibility & Technical Performance | Platform | Download Process | File Size (average) | Mobile‑friendly? | Accessibility (WCAG 2.1 AA) | |----------|------------------|---------------------|------------------|-----------------------------| | DepEd OER portal | 2‑click (search → download) | 8‑12 MB per book | Yes (responsive UI) | Good – PDFs tagged, alt‑text for images | | Phil IRI website | Registration → “My Resources” → download | 9‑13 MB | Yes – but registration adds friction | Very Good – PDFs include bookmarks, language‑switch (English/Filipino) | | NLP Digital Collections | Browse → “PDF” icon → download | 7‑10 MB | Yes – minimal UI | Fair – some PDFs lack proper tagging; screen‑reader users may need a conversion tool |
– Average download time on a 4 Mbps connection: 15‑25 seconds per file.
(All URLs accessed on 12 April 2026; information reflects the state of the resources as of that date.)