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.
2022/02/11 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.
2021/04/07 Version 5.0.0.4
-Fixed : Screen flicker during the Page transition animation
-Fixed : Download manager & Archive extract function
-Fixed : Other minor issue.
2021/03/04 Version 5.0
-Modified : Migrate from appcompat to androidx, Now requires minimum version of Android 4.0.
-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.
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.
2020/11/10 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
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.
2020/06/08 Version 4.5.2
-Modify : 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.
2020/03/27 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
2020/04/06 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
2019/05/23 Version 4.3.2.4
-Fixed : Some 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
2019/03/12 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
2018/10/09 Version 4.2.1.2
-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
2018/06/15 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
2018/05/29 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
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
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.
2018/07/27 Version 4.2.0.2
-Fixed : Continuance show restart message
2018/07/19 Version 4.2
Changed:"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"
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 7.1+ APP shortcut.
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
2018/11/30 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
2018/10/18 Version 4.2.1.4
-Fixed : SMB and FTP protocol issue again
-Fixed : A file source plugin 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
-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
2018/04/09 Version 4.0.0.4
-Fixed bug: Some EPUB file parse issue.
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).
2017/10/26 Version 3.7.1-Improved LAN access speed.
2017/10/11 Version 3.7.0.8-Fixed unable to access some NAS by LAN2017/08/31 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
2017/06/11 Version 3.6.0.1-Fixed unable to load some PNG files-Fixed some force close issue2017/06/09 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
2017/12/18 Version 3.8.0.2-Fixed application icon is missing on Android 7.12017/12/11 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
2017/12/18 Version 3.8.0.2-Fixed application icon is missing on Android 7.12017/12/11 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
Perfect Viewer is a very fast image/comics/ebook viewer.
*Turn black/white image into 4 colorize image(Only available for donated users. Need install Perfect Viewer donation application).
*Page layout: Auto single page, Auto dual page, Auto switch by screen orientation
*Support eEook file format: EPUB, HTML, TXT
*Support image file format: JPEG, PNG, GIF, BMP, WebP, TIFF
*Support archive file format: CBZ/ZIP, CBR/RAR, 7Z/CB7, LZH, CBT/TAR
*Support PDF, XPS & DJVU file after install the PDF plugin
*Open file from network file sharing(CIFS/SAMBA), FTP, SFTP, FTPS, OPDS
*Require internet permission for CIFS/SAMBA support.
*Support open files from Google Drive, Dropbox, OneDrive after install the source plugin
*Require "GET_ACCOUNTS" and "USE_CREDENTIALS" permission for Google Drive support
*Support 3 viewer mode: Page mode, Vertical scroll mode (PDF viewer,webtoon like) and Horizontal scroll mode.
*Smooth filters: Averaging, Bilinear, Bicubic, Lanczos3;
*Five view mode: Full size, Fit Screen, Fit Width, Fit Height, Fixed size, Stretch;
*Support Left-to-right & right-to-left reading
*Set image as wallpaper
*Browse image in folder/archive as thumbnail
*Bookshelf function
*Support pinch to zoom & fling gesture
*Simple bookmark function
*My favorites management
*Cache next and previous page
*Simple file management(delete, rename)
*Slideshow
*Support extract files from archive
*Adjust image brightness,contrast & gamma
*Auto cut off white border.
*Support Google Chromecast
*Balloon magnifier