PDF4QT Free PDF Editor Releases & Changelog

Bug Fixes

• Fixed file associations in the Windows MSI installer to more reliably associate system PDF open permissions.

New Features

• Added Traditional Chinese (zh_TW) language translation support.
• Embedded online update information configurations for Linux AppImage packages.

Bug Fixes

• Fixed application crashes triggered when importing JPEG or PNG images as electronic signatures in the digital signature component.
• Corrected incorrect system font rendering issues on specific Linux platforms.
• Fixed lost child bookmarks when dragging to reorder nested bookmarks.

Improvements

• Optimized drag-and-drop reordering for text sticky notes to be smoother.
• Allowed users to configure and hide the "external link" options within the interface.

New Features

• Compiled based on Qt 6.9.1 dependency environment, adding corresponding simple Docker quick-build scripts.
• Added physical redaction annotation support in the CLI component PdfTool.
• Introduced cross-file persistent preference settings for page layouts (single/dual page modes) so users do not have to reconfigure them every time.

Improvements

• Optimized interactive operations for clearing recent file history.
• DocPage Organizer now defaults to using PDF filenames instead of outline titles during multi-document merging.

New Features

• License Change: Changed core code open-source license to the more permissive MIT license.
• Added user settings to toggle forced light or dark modes.
• Added helper settings to hide the crosshair pointer when adding annotations and lines.

Bug Fixes

• Fixed broken "Invert Page Selection" button in the Page Master component.

New Features

• Major Engine Upgrade: Fully migrated and refactored the project to C++20 standard and Qt 6 rendering framework, yielding huge performance gains.
• Added opacity adjustments and wider color palettes for highlights.

Bug Fixes

• Fixed missing PDF outlines/tables of contents during document merging after deleting pages in the PageMaster component.
• Fixed bug preventing importing of specific image formats into PDF pages.

New Features

• Launched PDF4QT Diff: Officially introduced the side-by-side PDF comparison utility with synchronized scrolling and difference highlights.
• Multi-threaded Rendering: Optimized rendering speed of large, high-resolution drawing files in Viewer for smoother page flipping.

New Features

• Project Debut: Released the first public beta version of PDF4QT Viewer and C++ PDF library, officially open-sourcing the project.