Right PDF Reader4.2.0 - App Store

Right PDF Reader goes beyond a free PDF reader app. Created by a team of professionals in the PDF software business since 1993, Right PDF Reader has a simple UI that is easy to navigate and more features than average free readers.

PDF Viewing
- Fast document open speed
- Browse lets you view PDFs in the device or iCloud
- Supported thumbnail view
- View PDF portfolio, comment, attachment and protected document
- Single page view or continuous view available
- Fit page width or whole page are also available under single page view
- Use Day/Night mode to adjust brightness
- After tapping page number, you can enter a number and jump to that page directly.
- Quickly add and edit Bookmarks and Marks
- Search document

Note and Comments
- Use highlight, cross-out and underline to annotate PDF with customizable color and opacity
- Note lets you to add text comment anywhere in PDF
- Use Draw Tools to mark up PDF with color, thickness and opacity of your choice. Move and undo are also supported
- Batch remove comments

Document Management
- Create folder to organize PDFs better
- Move or copy multiple documents to a folder
- Compress multiple documents or folders, or extract any package quickly
- Rename document
- Attach one or multiple PDFs to an e-mail
- Select and delete multiple documents

Online Sharing
- Get documents in and out of Dropbox
- Add WebDAV servers to upload/download documents easily
- Access documents in Gaaiho PDF online or upload documents directly to the app (permissions required), breaking the barrier between computer and your iPhone/iPad

Handwritten signature
- You can create a handwritten signature by drawing, using an image, or taking a photo
- Sign anywhere in document

Other Features
- Fill a form
- Use “open in” to share PDF files with other applications
- Auto-memorize the point you quitted reading last time
- Protect PDF with an open password
- Print document

Version History 1. Updated Dropbox SDK to improve integration security.
2. Adapted to the windowing system of iPadOS 26.
3. Various bug fixes. 4.2.0 10/10/2025 OneDrive support: you can now open PDF files in linked accounts and keep the changes in sync.
Improved sync for Dropbox and WebDAV file .
Fixed crash issue when clicking "Pencil" tool in iPadOS 16.1. 4.1.0 03/05/2024 1. Added Scan feature: you can now scan documents/pictures directly or select images, and use edit tools to create high-quality PDF files.
2. Added OCR feature: you can now run OCR on scanned documents so as to search and reuse its contents.
3. Various bug fixes 4.0.0 12/27/2022 **Rebranding: “Gaaiho” has been changed to “Right PDF” starting from version 3.0.

1. Added handwritten signature.
2. Added form filling feature.
3. Redesigned color palette and line thickness UI.
4. Added Browse to Document tab for you to view documents in the device or iCloud.
5. Added thumbnail feature.
6. Improved Bookmarks: (1) Outlines renamed as Bookmarks. Bookmarks created in the Windows version will be shown here, but are read-only; (2) Bookmarks renamed as Marks. Marks created on the device will be shown here, and you can edit or delete them. Also note that Mark data are stored in the device instead of PDF.
7. iOS 15 compatible.
8. Various bug fixes. 3.0.0 05/23/2022 1. Updated installer to make it compatible with both iPhone and iPad.
2. Added Handwritten signature.
3. Supported iPhone 12. 2.0.0 02/05/2021 1. Supported iOS 14. 1.9.3 09/23/2020 Full screen mode adapted to iPhone X display. 1.9.1 12/04/2018 Updated Dropbox API
Fixed issue: failed to return to the previous page after closing and opening the file or adjusting page layout 1.9.0 07/12/2017 Supported iOS 9.3.3
Fixed certain fonts that are incorrectly displayed
Fixed crash issues when printing certain special files
Various bug fixes 1.8.0 08/19/2016 Fixed display errors for certain fonts in iOS 8.2 and above. 1.7.1 05/01/2015 Supported iOS 8
Supported iPhone 6 and iPhone 6 Plus
Improved certain UI details
Various bug fixes 1.7.0 02/18/2015 ---New Features---
Brightness Control
Screen brightness lock
Manual save button
Annotation List displays annotation count for each page and full document

---Improvements---
The color of the icon in Annotation List corresponds to actual color
Fixed oversized icon issue when zooming in page
Improved default cross-out line color
Improved positioning imprecision when marking a certain special characters with highlight, cross-out or underline
Set current page number as bookmark name when adding new bookmark

---Fixed Issues---
Fixed crash issue after using Freehand Pen intensively
Fixed failure to download and open files in WebDAV in Synology NAS environment
Various bug fixes 1.6.0 07/13/2014 Full iOS7 compatibility
Streamlined UI
Various bug fixes 1.1.0 11/06/2013 1.0.0 09/13/2013