PDFtuning Mate for Kindle and E-readers – Optimize PDFs for e-ink reading with smart cropping and reflow

Summary: PDFtuning Mate is a macOS app designed to optimize PDFs specifically for e-ink readers like Kindle and tablets by applying smart cropping, table of contents generation, text reflow, image grayscale adjustment, and file compression to improve readability and navigation.

What it does

The app trims margins and redundant headers, creates clickable tables of contents, converts multi-column layouts into single-column or pure text formats, optimizes images for 256-level grayscale with enhanced contrast, and compresses files by adjusting PPI and removing hidden elements. It also provides live previews for over 30 e-reader models to ensure accurate display before export.

Who it's for

It targets users who read and annotate PDFs extensively on e-ink devices, including those handling academic papers, technical documents, and long reports on Kindles, Kobo, and similar readers.

Why it matters

It addresses the difficulty of reading complex PDFs on e-readers by improving layout, navigation, and file size, reducing the need for constant zooming and swiping while maintaining annotation alignment.