PDF Tuner for E-Readers

Make papers, textbooks, professional documents and presentation PDFs easier to read on e-readers.

Wide margins, tiny text, missing navigation or gray scan backgrounds? PDF Tuner helps you prepare a more comfortable reading copy on your Mac.

Add a PDF → Choose an optimization → Check the preview → Start
Built-in presets keep setup simple. Feature search helps you find the setting you need.

FIVE TOOLS FOR BETTER READING

• Auto Crop
Automatically chooses text or pixel detection for each page, finds the content area and removes excess margins to make better use of small screens.

• Table of Contents & Outline Navigation
Detects headings in text-based PDFs and creates clickable outline bookmarks with up to three levels. Multilingual heading detection reduces interference from headers, footers and page numbers.

• Grayscale & Scanned Black-and-White
Grayscale preserves existing searchable text and tonal detail. Scanned black-and-white processing reduces gray backgrounds, with adjustable contrast, stroke preservation and resolution. Optional photo detection keeps grayscale in detected photo areas. A new 150 DPI option lets you trade fine detail for smaller black-and-white output.

• Text Reflow
Turn supported text PDFs into a single-column layout with Standard, Large or Extra large text to reduce horizontal panning. A text-only option leaves out images.

• Flexible Compression
Choose Clarity First, Balanced or Size First, or keep images at their original resolution. Optimize images and fonts and optionally remove attachments and other non-reading data to balance clarity and file size.

PREVIEW, PROCESS & EXPORT

Check layouts with 30+ e-reader screen profiles. Compare original and optimized crop or image-processing previews, then inspect the generated file. Process multiple PDFs, export results, reveal them in Finder or open them in another app.

Optional watermark cleanup is also available. If Send to Kindle is installed, use “Send to…” to hand off your PDF for delivery.

LOCAL PROCESSING. CORE FEATURES FREE.

All analysis, previews and optimization run locally on your Mac. Documents are never uploaded to a server. Results are saved as separate reading copies, keeping your originals intact.

Core optimization features remain free to use. An optional one-time Pro upgrade removes upgrade prompts and supports continued development.

TERMS OF USE (EULA)
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/