The PDF creating application needs to ensure that the document is accessible. Adobe Reader (on desktop) does support reflow [0]. Adobe Reader on Android also

The PDF creating application needs to ensure that the document is accessible. Adobe Reader (on desktop) does support reflow [0]. Adobe Reader on Android also supports reflow [1]. [0] https://helpx.adobe.com/acrobat/using/reading-pdfs-reflow-accessibility-features.html https://helpx.adobe.com/acrobat/using/reading-pdfs-reflow-ac... [1] https://www.quora.com/Whats-the-best-free-PDF-reader-on-Android-that-can-reflow-and-zoom-text-at-the-same-time-So-far-Ive-evaluated-Adobe-Reader-Polaris-Office-and-Qoppa-among-others https://www.quora.com/Whats-the-best-free-PDF-reader-on-Andr...