Always improving the reading copy

What’s New

From the first release to the latest improvements, follow PDF Tuner’s progress.

LATEST RELEASE

2.3.0

This update improves PDF readability, compression, and previews.

Clearer image processing: Improved grayscale conversion preserves searchable text and graphic details. Enhanced scanned black-and-white mode offers stroke preservation and resolution controls, with automatic photo detection to retain grayscale detail.

More flexible compression: Choose Clarity First, Balanced, or Size First to balance readability and file size, with improved compression for some scanned and image-rich PDFs.

Easier preview comparisons: Switch between the original and the crop or image-processing preview. Improved consistency between previews and exported files, with more accurate processing progress.

Better table of contents: Improved multilingual heading detection reduces interference from headers, footers, and generic page labels. Fixed issues with refreshing the outline preview.

Simpler file actions: File actions are now grouped in the More menu. Fixed blank previews for some PDFs, page count display issues, and file-switching behavior.

2.1.6

This update focuses on clearer scanned PDFs, improved contrast and watermark removal, and a more reliable preview experience.

Added a Pure Black & White mode for clearer gray or faded scanned documents

Added black sensitivity control to help preserve faint and blurry text

Expanded contrast and watermark-removal controls with improved protection for text, charts, and scanned backgrounds

Simplified grayscale, Pure B&W, and contrast settings to prevent conflicting options

Fixed an issue where grayscale or Pure B&W preview was not applied immediately after adding a file

Improved smart detection and recommended settings for scanned PDFs

Refined the preview toolbar to leave more room for multi-digit page numbers

Updated localized descriptions and user guidance

2.0.1

Added batch multi-file processing. Select multiple PDFs via CMD/Shift to crop, compress and reflow in bulk; shortcut keys, copy and batch export are now available.

Improved preview switching performance for large PDFs.

Bug fixes and general performance optimizations.

1.2.2

Known Issue Fixes & Performance Improvements

1.2.0

This update brings significant improvements to the PDF generation workflow and overall user experience:

Optimized File Workflow: Files are now generated immediately upon starting. You are no longer restricted to saving in the original file's directory, effectively eliminating redundant macOS permission (Sandbox) prompts.

Enhanced Export Actions: Support for Saving, Copying, Exporting, and Bulk-Exporting optimized files to any user-specified directory.

Quick Menu & Shortcut Support: Fully integrated keyboard shortcuts for the file list—Start Tuning (↩), Export to... (⌘A), Preview (Space), and Copy (⌘C).

New List View Style: Card sizes are now adjustable, including a new compact "List" view style for better high-density management.

Keyboard Navigation: Effortlessly navigate through your file list using arrow keys for faster and smoother selection.

1.0.9

Improved handling of table of contents after automatic physical PDF cropping.

Fixed known issues, optimized performance, and simplified names and functions.

1.0.8

UX Improvements: Streamlined first-time file access permissions on macOS; updated quick-start tour.

Smart Crop: Enhanced physical cropping for better content removal & storage reduction; improved recognition of more header/footer styles.

TOC/Outline: Advanced extraction of abstracts and figure lists for large PDFs; auto-calibrated page numbers.

Bug Fixes:

Resolved restricted functionality prompts for password-protected PDFs.

Fixed cropping position reset after additional optimizations.

Eliminated mask backgrounds in previews/grayscale outputs caused by special PDF elements.

Corrected enabled "Start Tuning" button for password-protected PDFs.

Minor bug fixes for known issues.

1.0.5

Improved Outline creation to better support academic papers and documents with TOC pages.

Added support for Supernote series e-readers. PDF optimization preview is now available for 35 mainstream e-readers.

Fixed known issues and improved performance.

1.0.3

Fixed PDF export permission issues and general improvements.

1.0.2

No release notes were provided for this version on the App Store.

Release history from the App Store, retrieved 2026-09-23. Dates shown in UTC.

View on the App Store →