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In accordance with our rebranding policy effective from May, 2022, "Right PDF" has replaced Gaaiho as the brand name.
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Release Notes

Right PDF Reader (PC)

* Right PDF is the new brand name (version 6 and above) in place of Gaaiho PDF (version 5 and earlier).
Release Note 6.2 (2023/12/05)
Bug Fixes and Improvements:
• Improved the initial position of arrow when dragging "Callout" annotations.
• Fixed content display issues for certain documents.
• Fixed the blurry issue after applying transparency to stamp.
• Fixed "Scaling" settings malfunction in the properties of Right PDF virtual printer.
• Fixed the issue of not being able to add a handwritten signature to a signature field in a protected document which allows signing.
• Fixed the cursor flickering issues when clicking the date field.
• Fixed pop-up note not showing up after adding a Replace Text markup.
• Updated certain icons.
• Fixed minor resource inaccuracies.
• Various bug fixes.
Release Note 6.1 (2022/08/24)
Bug Fixes and Improvements:
• Fixed binary vulnerabilities in the software.
• Fixed minor resource inaccuracies.
• Fixed form submitting issue after password protection is applied.
• Opening XFDF files no longer closes the program.
• Fixed the issue of users unable to create stamps by right-clicking after selecting an area.
• Disabled insecure ActiveX components, eliminating the threats of remote file download and execution.
Release Note 6.0 (2022/05/23)
Major Changes:
• Rebranding: "Gaaiho" has been changed to "Right PDF" starting from version 6. Following the change, “Gaaiho PDF Reader” becomes “Right PDF Reader,” and so on.
• Optimized UI and redesigned icons.
Functionality Changes:
• Open multiple files that are marked as favorite at the same time.
• Added Size to Stamps > Create Custom Dynamic Stamp so that you can configure size or size unit; added size unit to Stamp > Create from an Image.
• Improved Handwritten Signature:
○ Smoother lines.
○ Change the signature’s color when it is placed.
○ Retain signature text after saving (it becomes an image in the previous version).
• Custom shortcut keys.
• Added duplex printing option (if the printer model supports it). Now available in Print dialog box.
• Added portrait/landscape printing option. Now available in Print dialog box.
• Supported batch printing. Use File > Batch Print to add multiple documents for printing.
• Added Print Dialog Presets to Document Properties > Advanced.
• Added CSV format option to Form > Export Data.
• Supported setting text font in the pop-up annotation box.
• Added Read Article feature; added Articles panel to sidebar navigation pane.
• Improved AutoScroll: added speed, direction and pause controls.
Release Note 5.4 (2021/03/04)
Gaaiho PDF Reader 5.4
• Updated PDF portfolio and multimedia in response to Adobe and Microsoft discontinuing the support of Flash Player.
Release Note 5.3 (2020/06/10)
Gaaiho PDF Reader 5.3
• The design of Gaaiho PDF Reader 5.3 inherited our flagship Gaaiho PDF Suite 5. In this new version, you'll find useful features like view, comment, protect, share, search, bookmark, as well as various improvements such as tabbed document interface and faster launch speed -- and most importantly, a better experience with PDF documents.
Release Note 4.2 (2018/03/30)
Bug Fixes and Improvements:
• Fixed rendering issues of certain documents.
Release Note 4.1 (2018/03/20)
Bug Fixes and Improvements:
• Fixed null pointer reference vulnerability, stack overflow vulnerability, buffer overrun vulnerability and memory corruption vulnerability in software and eliminated security threats.
Release Note 4.0 (2016/09/14)
New Features:
• New UI design which supports high-resolution display.
• Added touch mode and enhanced UI for touch-enabled devices.
• Added online PDF conversion service that supports PDF-to-Word, Word-to-PDF, Excel-to-PDF, PPT-to-PDF, PDF-to-JPG, and JPG-to-PDF, etc.
• Added Find feature for searching specific tools on the Ribbon toolbar.
• Added Index feature which supports embedding index in the current document and creating indexes for PDF files in a specified folder.
• Added Form feature which supports Reset Form Field and Import/Export Form Data.
• Added Save to DMS feature which supports check-in/check-out PDF files from SharePoint.
• Added Save All Images feature to the right-click menu of Hand Tool.
• Supported XMP which makes it possible to display more metadata.
• Added a new message bar which shows information of Signatures, Highlight Form Fields, etc.
• New Portfolio UI design.
• Added the option to disable JavaScript.
• Added Open/ Minimize All Pop-ups to the right-click menu of Comment.
• Supported Windows 10.
Improvement：
• Improved Recent Documents. Nonexistent documents will be removed from the list upon clicking.
• Improved uninstall process by adding an option to let user clear related registry records and user data.
• Added new signature status messages to make digital signing more user-friendly.
• Enhanced keyboard functionality.
• Improved preview quality for PDF Manager.
• Improved line types in Draw Tools.
• Fixed UI display issues when using high contrast colors.
• Various bug fixes.
Release Note 3.0 (2015/01/30)
New Features:
• Redesigned Gaaiho Reader UI with all-new icons.
• Added PDF Manager which enables finding and managing all PDF files in the computer.
• Added Read Out Loud feature.
• Added annotation tools such as comments, typewriter and shapes.
• Added stamp feature.
• Added attachment feature.
• Added measure tools.
• Added viewing tools, including rulers, grid, zoom in/out, multi-window and multi-page display.
• Added sub-bookmark feature.
• Added handwritten signature tool.
• Supported securing PDF with open password.
• Supported printing bookmarked pages.
• Supported sending PDF to Evernote and syncing PDF to Dropbox.
• Added laser pointers and continuous view to full-screen mode for enhancing presentation effectiveness.
• Supported changing colors for text and document background.
• Added reverting to last view position when re-opening document.
• Supported setting how many items the recent file list shows.
Improvement：
• Various bug fixes.
Release Note 1.0 (2012/11/30)
• Gaaiho Reader officially release!
* Right PDF is the new brand name (version 6 and above) in place of Gaaiho PDF (version 5 and earlier).
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