﻿2025/06/09 Version 5.0.4.4
-Fixed : Crash on Android 15+ devices.

2024/12/10 Version 5.0.4.3
-Fixed : Upgrade Android API version
-Notification : PerfectViewer is no longer under development, but a brand-new cross-platform version, PerfectViewerX, is currently in development. It is expected to run on Windows, Linux, macOS, and Android, with the first version anticipated to be released next year. Please stay tuned!

2023/04/20 Version 5.0.4.2
-Modified : Long tap magnifier now is support in the ebook mode.
-Fixed : Some EPUB file layout.
-Fixed : Using quick bar while viewing PDF file and may cause force close.

2022/12/09 Version 5.0.4.1
-Fixed : Some force close issues.

2022/12/06 Version 5.0.4
-Added : Forward/Backward 1 page action. This action will ignore the dual page setting.
-Modified : page margin settings for EBook is increase to 500.
-Fixed : Book filter issue in bookshelf.
-Fixed : Restore settings issue in preferences management.
-Fixed : Could not open ebook file on Android 13 devices.
-Fixed : Some force close issues.

2022/05/20 Version 5.0.3
-Added : 12-hour clock option.
-Added : Open Next/Previous book button on last/first page message.
-Fixed : Read mark issue.

2022/03/09 Version 5.0.2.4
-Fixed : Access to /storage/emulated/0/Android/data or /sdcard/Android/data on Android 11 or above.
-Fixed : Some EPUB file layout.
-Fixed : Other minor issue.

2022/02/11 Version 5.0.2.3
-Modified : Some EPUB file layout.

2022/02/02 Version 5.0.2.2
-Fixed : "Open File" function not work.
-Fixed : Could not access OPDS server.

2021/11/23 Version 5.0.2.1
-Fixed : "Quick bar customize" remove function and move function order issue.

2021/11/13 Version 5.0.2
-Added : Now will require the manage all file permission for Android 11.
-Added : "Viewer margin" option for Vertical / Horizontal scroll mode.
-Fixed : Maybe crash on enabling "Auto detect page border" when viewing the PDF files.
-Fixed : Not save image thumbnails data to database.

2021/07/11 Version 5.0.1.3
-Fixed : Could not turn the read mark to finished
-Fixed : Dual page layout issue.

2021/06/28 Version 5.0.1.2
-Fixed : Some EPUB file parse issue.
-Fixed : Some force close issues.

2021/06/15 Version 5.0.1.1
-Fixed : May not load last read file when resume from sleep
-Fixed : Other minor issue.

2021/06/08 Version 5.0.1
-Added : Keep the image zoom and scroll position before exit or switching the app
-Added : Show more EXIF tags
-Changed : Now can do auto border detect after manual crop
-Tweaked : Bookshelf performance
-Modified : UI theme for E-Ink devices
-Fixed : Other minor issue.

2021/04/07 Version 5.0.0.4
-Fixed : Screen flicker during the Page transition animation
-Fixed : Download manager & Archive extract function
-Fixed : Other minor issue.

2021/03/31 Version 5.0.0.3
-Fixed : Show duplicate books in bookshelf

2021/03/26 Version 5.0.0.2
-Fixed : Page transition effect performance.
-Fixed : Bookshelf performance.
-Fixed : Some force close issues.

2021/03/15 Version 5.0.0.1
-Fixed : Open E-book files on 32bit CPU devices will cause force close
-Fixed : Some force close issues.

2021/03/04 Version 5.0
-Modified : Migrate from appcompat to androidx, Now requires minimum version of Android 4.0.
-Modified : Re-architect theme system.
-Modified : Display option for file browser and bookshelf.
-Modified : Read progress now use the relative path to identify the file.
-Added : "Cover" option for image fit.
-Added : "Light gray" theme.
-Fixed : Page transition effect
-Fixed : OPDS http connection

2021/01/18 Version 4.7.1.4
-Fixed : Bookshelf files display incorrect.

2021/01/07 Version 4.7.1.3
-Added : "Swipe to delete" option could disable swipe to delete gesture.
-Fixed : Bookshelf files counter on folder is incorrect issue.

2020/12/02 Version 4.7.1.2
-Fixed : File browser scrolling issue.
-Fixed : Could not display some PNG files.

2020/11/16 Version 4.7.1.1
-Fixed : Open files from 3rd party application.
-Fixed : Other minor issue.

2020/11/10 Version 4.7.1
-Added : "Device use E-Ink screen" option.
-Fixed : Network file cache issue.
-Fixed : PDF file outline issue.
-Fixed : Other minor issue.

2020/10/08 Version 4.7.0.1
-Modified : Some EPUB file layout.
-Fixed : Some force close issues.

2020/09/29 Version 4.7
-Added : Move all image filters to new Filter management page.
-Added : Gauss blur filter
-Added : "Force apps to ignore notch space" option. Could make Perfect Viewer use notch space
-Added : Support mouse wheel control
-Modified : Quick bar buttons management.
-Modified : Most list activity implemented swipe to remove, e.g., History, Bookmark, Download etc.

2020/08/10 Version 4.6.0.2
-Fixed : Image get blurred
-Fixed : Aozora bunko tags parse issue

2020/08/06 Version 4.6.0.1
-Fixed : Could not work with File Source Plugin.
-Fixed : Other minor issue.

2020/07/29 Version 4.6
-Added : "Highlight and enable links" option.
-Added : Page link support for PDF (Need PDF plugin 1.7.4+) & eBook files.
-Added : "Return to the previous page" action for quick bar and touch zone.
-Added : Long tap on quick bar icon to change quick bar action.
-Added : Require USE_BIOMETRIC permission for fingerprint. Fingerprint use new Biometric API.
-Fixed : Screen orientation switch issue.
-Fixed : Other minor issue.

2020/06/08 Version 4.5.2
-Modified : Online Backup/Restore now use Perfect Viewer Source Plugin. And now support Google Drive, OneDrive and DropBox cloud storage. (Need Perfect Viewer Source Plugin at least version 1.3.3).
-Fixed : Crash when open some djvu files.
-Fixed : Raname folder/file issue.
-Fixed : Handling very long folder/file name in archive.

2020/04/22 Version 4.5.1.2
-Modified : Bookshelf folder read progress now follow "Show read mark" option.
-Fixed : Bookshelf folder read progress issue.
-Fixed : Vertical / Horizontal scroll mode could not open password protected files.
-Fixed : Other minor issue.

2020/04/06 Version 4.5.1.1
-Fixed : Bookshelf not show read progress for image files.
-Fixed : Other minor issue.

2020/03/27 Version 4.5.1
-Added : Bookshelf now can show up the folder read progress.
-Fixed : Some EPUB file parse issue.
-Fixed : Some force close issues.

2020/02/03 Version 4.5.0.1
-Fixed : Open files from 3rd party application.
-Fixed : Other minor issue.

2020/01/17 Version 4.5
-Added : Select text feature. EBook files only. PDF files isn't supported.
-Copy, Google search, Google translate, Search dictionary behavior is supported after text selected.
-Search dictionary support MDict, StarDict and EPWING format of dictionary file.
-Added : PDF text reflow option in EBook settings. Need PDF plugin version 1.7.3+
-Fixed : Other minor issue.

2019/11/15 Version 4.4.2
-Added : Support ZIPX format. Only support BZip, LZMA, PPMD, XZ compress method. "Best method" is not support.
-Added : "Browse" function in "File browser". It can list files in archive.
-Added : "Select all" function in "File browser" and "Bookshelf"
-Modified : Some EPUB file layout
-Fixed : Other minor issue

2019/10/07 Version 4.4.1.5
-Fixed : Random crash when switch page
-Fixed : Load last read file issue

2019/09/18 Version 4.4.1.4
-Fixed : Compatible issue for older Android 4.x devices
-Fixed : Backup/Restore settings issue

2019/09/16 Version 4.4.1.3
-Fixed : Resume application not load last read file
-Fixed : May crash when use table of content on zip files
-Modified : folder sort method inside archive files

2019/09/04 Version 4.4.1.2
-Fixed : Unable browse external storage on Android Q
-Fixed : Backup/Restore settings issue

2019/08/30 Version 4.4.1.1
-Fixed : SMB share folder list issue

2019/08/27 Version 4.4.1
-Modified : Speed up SMB and FTP protocol speed
-Added : List view for bookshelf
-Added : Folders in archive will list in table of contents
-Fixed : Quick bar button mismatch issues
-Fixed : Other minor issue

2019/07/09 Version 4.4
-Added : Display options for bookshelf
-Added : Sort option for bookshelf
-Added : Display options for filebrowser
-Overhaul : Touch regions management also add 2 kind of touch regions
-Changed : Bookshelf folder add method
-Fixed : Some force close issues

2019/05/23 Version 4.3.2.4
-Fixed : Some force close issues

2019/05/09 Version 4.3.2.3
-Fixed : Bookshelf widget not work

2019/05/06 Version 4.3.2.2
-Fixed : A force close issues

2019/05/02 Version 4.3.2.1
-Fixed : A force close issues

2019/04/29 Version 4.3.2
-Changed : Folder in bookshelf now show multiple cover instead of folder image
-Modified : Collate multi-language localization strings files
-Fixed : Some force close issues

2019/03/27 Version 4.3.1.2
-Fixed : Memory leaks issue in vertical/horizontal scroll mode
-Fixed : Some force close issues

2019/03/15 Version 4.3.1.1
-Fixed : Slow load image speed on some devices
-Fixed : Restore backup setting issue

2019/03/12 Version 4.3.1
-Added : Blue light filter
-Added : Now can change text align for clock, page header and page footer
-Added : Main menu button and balloon magnifier usage tips.
-Added : Double tap on main menu button to show touch zone information.
-Modified : Some UI element
-Fixed : Some force close issues

2019/01/28 Version 4.3
-Added : Support more types of ebook. Include PDB, PRC, MOBI, FB2, AZW3.
-Added : Book cover size in bookshelf is changeable.
-Modified : In balloon magnifier mode. Tap on zoomed balloon will clear the balloon.
-Modified : Increase the number of image cache.
-Modified : If both image and archive files in a folder. Bookshelf will recognize as folder instead of book.

2018/12/21 Version 4.2.2.3
-Fixed : Force close on parsing some EPub/HTML files
-Fixed : EBook not show some symbols if use CJK vertical mode

2018/12/19 Version 4.2.2.2
-Fixed : Some force close issues

2018/12/13 Version 4.2.2.1
-Fixed : Maybe Force close on parsing some EPub files
-Fixed : Maybe Force close on switch screen orientation

2018/11/30 Version 4.2.2
-Added : Added "Set as e-book background" function
-Added : Added "Set as bookshelf background" function
-Added : Auto rotate in page layout now have 90° and 270°
-Modified : Pinch zoom behavior in page mode
-Fixed : Now UTF-32 charset is support in EBook mode
-Fixed : Chapter parsing issue on some EPub files
-Fixed : Fast scroller on outline menu

2018/10/18 Version 4.2.1.4
-Fixed : SMB and FTP protocol issue again
-Fixed : A file source plugin issue

2018/10/15 Version 4.2.1.3
-Fixed : SMB and FTP protocol issue
-Fixed : Other minor issue

2018/10/09 Version 4.2.1.2
-Fixed : Some UI issue

2018/10/04 Version 4.2.1.1
-Fixed : SMB protocol issue
-Fixed : Some UI issue

2018/09/19 Version 4.2.1
-Added : New "Book filter" function added to bookshelf
-Added : Startup password could use fingerprint (Android 6.0+)
-Changed : Fullscreen mode could choose hide the status bar or navigation bar
-Changed : Multi-select mode behavior
-Fixed : Other minor issue

2018/07/27 Version 4.2.0.2
-Fixed : Continuance show restart message

2018/07/25 Version 4.2.0.1
-Changed : Some UI element
-Fixed : Extract function, other minor issue

2018/07/19 Version 4.2
-Changed : Function name "Open file" rename to "File browser"
-Added : New "Open file" function using system built-in file picker
-Added : New "Folder shortcuts" section in "File browser" could add local or network folder into here
-Added : "File browser" and "Boolshelf" now have single select mode (default) and multi-select mode
-Added : "Deblock filter" to remove block artifacts on low quality jpeg file
-Added : Support Android 8.0+ external storage access
-Added : Support Android 7.1+ APP shortcut. Long tap APP icon on home screen will show the shortcut
-Fixed : Share function, ChromeCast and other minor issue

2018/06/15 Version 4.1.0.3
-Fixed : Fail to backup settings to local storage
-Fixed : Parse toc incorrect on some EPUB files
-Fixed : Screen rotate may cause display incorrect

2018/06/12 Version 4.1.0.2
-Fixed : Next/Previous book maybe ignore book sometimes
-Fixed : Text size option not work in EBook mode
-Fixed : Some force close issues

2018/06/04 Version 4.1.0.1
-Fixed bug: Some force close issues

2018/05/29 Version 4.1
-Quick setup now changed to Setup Wizard
-Added "Forward x pages" and "Back x pages" feature.
-Added "Open page 1" feature in file browser & bookshelf.
-"Share" and "Balloon magnifier" now is available in vertical/horizontal scroll mode
-Fixed bug: Page header and footer display issue in vertical/horizontal scroll mode
-Fixed bug: GPS information parse issue in EXIF
-Fixed bug: Some force close issues

2018/04/09 Version 4.0.0.4
-Fixed bug: Some EPUB file parse issue.

2018/04/03 Version 4.0.0.3
-Fixed bug: Last page issue in Vertical scroll mode.
-Fixed bug: Some EPUB file parse issue.
-Fixed bug: "Swipe bottom edge of screen" function not work.
-Fixed bug: "Set as wallpaper" function is disappear.

2018/03/22 Version 4.0.0.2
-Fixed bug: Some options may cause "File not found" issue
-Fixed bug: Image not fit the screen on some devices
-Fixed bug: Some force close issues

2018/03/15 Version 4.0.0.1
-Fixed bug: Some force close issues

2018/03/09 Version 4.0
-Added vertical scroll mode (PDF viewer,webtoon like) and horizontal scroll mode.
-Added extract files from archive feature.
-Rewrite appwidget framework.
-Add show EXIF information feature
-Startup screen added History, Bookmark and Favorite Manager.
-Support chapter from text file (Chinese or Japanese).

2017/12/18 Version 3.8.0.2
-Fixed application icon is missing on Android 7.1

2017/12/14 Version 3.8.0.1
-Changed some UI element
-Fixed some force close issues

2017/12/11 Version 3.8
-Added OPDS protocol support in network section (Not support in bookshelf)
-Rewrite FTP protocol. Now support FTPS (Implicit only) and SFTP
-Added print to printer feature (Need Android OS 4.4+)
-Redesigned side menu
-Added black UI theme

2017/10/26 Version 3.7.1
-Improved LAN access speed.

2017/10/11 Version 3.7.0.8
-Fixed unable to access some NAS by LAN

2017/10/06 Version 3.7.0.7
-Main menu added "Page transition effect" option
-Tweaked LAN access settings

2017/10/03 Version 3.7.0.6
-Fixed unable to access some NAS by LAN

2017/09/20 Version 3.7.0.5
-Fixed unable to access LAN at sometimes

2017/09/18 Version 3.7.0.4
-Try to fix bookshelf issues
-Fixed home widget issues
-Fixed some LAN access issues

2017/09/13 Version 3.7.0.3
-Fixed bookshelf issue on some devices
-Fixed some force close issues

2017/09/11 Version 3.7.0.2
-Fixed change page issue on EPUB files
-Fixed other minor issues

2017/09/06 Version 3.7.0.1
-Fixed few FTP issues
-Fixed SMB issue on Windows 8+

2017/08/31 Version 3.7
-Support SMB2 protocol
-Merge LAN and FTP into Network section
-External image format plugin interface is ready (BPG & FLIF Image Format Plugin will release later)
-Better support for transparent image
-Changed most icon from bitmap to vector
-Fixed change page issue in Chromecast
-Fixed some eBook issue

2017/06/16 Version 3.6.0.2
-Fixed image effect not apply on GIF files
-Fixed some memory leaks 
  
2017/06/11 Version 3.6.0.1
-Fixed unable to load some PNG files
-Fixed some force close issue
  
2017/06/09 Version 3.6
-Added support animated GIF, PNG, WebP
-EBook reader mode support read ahead cache
-EBook reader mode support drag to change page
-Fixed slideshow in EBook reader mode
  
2017/05/04 Version 3.5.1.1
-Fixed Google drive problem
  
2017/04/28 Version 3.5.1
-Added back pinch to zoom will stop at 100% temporary
-Native library support 64bit CPU
-Fixed memory leaks in E-book reader mode
-Fixed ChromeCast problem
-Fixed PDF & DJVU files not show thumbnail images

2017/03/24 Version 3.5.0.4
-Fixed some force close issue

2017/03/18 Version 3.5.0.3
-Fixed some force close issue

2017/03/17 Version 3.5.0.2
-Fixed may crash on some EPUB files

2017/03/16 Version 3.5.0.1
-Fixed some force close issue

2017/03/13 Version 3.5
-Rewrite touch screen control and added double tap control(Default off)
-Rewrite pinch to zoom feature
-Added double tap to zoom and one hand to zoom gesture
-Now can add bookshelf APP widget to home screen
   
2017/01/25 Version 3.4.1.1
-Fixed not scan DJVU files in bookshelf 
-Fixed PDF plugin not work on Android 7.0+
-Fixed text search on EPUB files
    
2017/01/20 Version 3.4.1
-Added support DJVU & XPS files (Need install PDF plugin. Network file is not support) 
-Auto color now will apply on B/W or grayscale images  
-EBook support auto open next/previous book
-Changed some UI element
-Fixed some HTML parse issue for EPUB files
