Description
An image viewer that allows you to browse images in folders and
compressed files like a book. Powerful customization is available.
- Supported image format (bmp, jpg, gif, tiff, png, ico, WIC
image)
- Compressed file support (zip, rar, 7z, lzh, cbr, cbz, cb7, …)
- Recursive compressed file support
- PDF support
- Video play support
- Touch operation supported
- Mouse gesture supported
- Key customization, gesture setting
- Movement, rotation, scaling by dragging
- Loupe mode
- Facing mode
- Full screen mode
- Slide show
- Susie plugin support
- Image drop from web browser
- Command extension by scripts
System Requirements
- Windows 10 64bit or higher
About ZIP Version
Portable package.
- No installation required, just extract the Zip and run
“NeeView.exe”.
- User data such as configuration files are stored in the “Profile”
folder.
- Uninstallation is simply a matter of deleting the file.
Note
Explorer-related settings use the registry. These settings do not
disappear even if the application is deleted, so please turn them off in
the settings before deleting.
Portal Site
Create your issue on GitHub.
Or comment on our blog.
License
MIT License
Copyright (c) 2016-2026 Ito Mitsuhiro (nee)
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
“Software”), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Third-Party Licenses
7-Zip
DLL: 7z.dll
SevenZipSharp
DLL: SevenZipSharpNE.dll
Material design icons
ICON: ic_help_24px, etc…
WPFDragAndDropSample
Code-in:
PDFium
DLL: pdfium.dll
PdfiumViewer
DLL: PdfiumViewer.dll
MagicScaler
DLL: PhotoSauce.MagicScaler.dll
.NET corefx
DLL: System.Buffers.dll, etc…
- Copyright (c) .NET Foundation and Contributors
- URL: .NET
- License: MIT
License
Icon Fonts
ICON: pushpin, etc…
SharpVectors
DLL: SharpVectors.*.dll
ProcessJobObject
Code-in:
- Copyright (c) Microsoft Corporation. All rights reserved.
- URL: VSTest
- License: MIT
License
Microsoft.Xaml.Behaviors.Wpf
DLL: Microsoft.Xaml.Behaviors.dll
Jint
DLL: Jint.dll
DLL: Acornima.dll
DLL: MetadataExtractor.dll
DLL: XmpCore.dll
- Copyright (c) 2009, Adobe Systems Incorporated All rights
reserved.
- Copyright 2015-2017, Yakov Danila, Nathanael Jones, Drew Noakes
- URL: xmp-core-dotnet
- License: BSD
3-Clause License
DLL: MediaInfo.dll
Vlc.DotNet
AnimatedImage
DLL: AnimatedImage.dll, AnimatedImage.Wpf.dll
NetBeauty 2
VirtualizingWrapPanel
DLL: VirtualizingWrapPanel.dll
libwebp
DLL: libwebp.dll, libsharpyuv.dll, libwebpdemux.dll
Generator.Equals
Code-in:
DLL: CommunityToolkit.Mvvm.dll
H.NotifyIcon
DLL: H.NotifyIcon.dll, H.NotifyIcon.Wpf.dll,
H.GeneratedIcons.System.Drawing.dll
kanaxs C# 拡張版 1.0.2
Changelog
46.2
(2026-08-02)
Fixed
- Suppressed the OS‑level confirmation dialog when deleting files (#1977)
- Fixed an issue where unselected effect settings were not carried
over from older versions (#1978)
- Fixed an issue where filename formatting was not applied when using
the “Save” command (#1979)
- Fixed an issue where disabled effects were still applied during
image saving and printing (#1980)
46.1
(2026-07-27)
Fixed
- Fixed an issue where the language setting was not saved (#1974)
- Fixed an issue where effect parameters were not carried over when
updating the version (#1973)
- Fixed an issue where multiple items were selected when the Shift‑key
shortcut was assigned to book navigation (#1971)
- Fixed an issue where color properties of effects could not be set
via script (#1970)
46.0
(2026-07-19)
Effects
Enhanced effect-related features.
- Added support for Effect Profiles, allowing batch
switching of all settings in the Effects panel (#689)
- Implemented the commands “Set effect profile”, “Next effect
profile”, and “Previous effect profile” (#689)
- Book settings can now store the selected effect profile. The default
is “Continue”, preserving previous behavior (#1339)
- Image effects now support multiple layers (#377)
- Added a “+” button to add effect layers
- Added a Colorize effect, which applies color based
on luminance (#1716)
- In the Levels effect, changing Black/White values now preserves the
Center ratio (#1194)
Slideshow
Enhanced slideshow functionality. Most options are available under
Settings → Slideshow.
- Added slideshow UI to the address bar and navigator panel (#882)
- Added command settings for slideshow page navigation (#716)
- Added settings for selecting end-of-book behavior during slideshow
(#1934)
- Added auto-scroll settings for slideshow (#1531)
- Added option to wait for animations during slideshow (#1770)
- Added timer-reset operation settings (#1939)
Settings File Optimization
Reduced the size of the settings file by omitting default
values.
Various save-data formats were also optimized, and some data structures
may differ from previous versions.
- Omit default values from the settings file (#848)
- Separated Quick Access file storage (#1902)
When a bookmark is registered inside a bookmark folder, it can now be
displayed as a tag in the Bookshelf.
Items inside bookmark folders show both ★ and the tag.
Items registered directly under the root continue to show ★ only.
- Display bookmark folders as tags in bookshelf items (#1851)
- Panel settings allow toggling tag visibility per display mode
- Tag colors can be configured from the bookmark folder’s context menu
→ Properties
- Default tag color is defined by the theme key “Tag.Background”
- Added ability to open the corresponding bookmark folder from the
bookshelf context menu
Full Desktop Mode
Added a Full Desktop Mode that expands across all
monitors. C Note: Does not work correctly in multi-DPI multi-monitor
environments.
- Added Full Desktop mode to window modes (#1848)
- Added “Toggle full desktop” command (Shift+F11)
Task Tray Resident Mode
Added a task-tray resident mode for faster startup.
- Implemented task-tray resident functionality (#446)
- Holding Shift while exiting the app also terminates the resident
process
Expanded the Book menu.
- Added “Open book in explorer” command (#1678)
- Added “Open book in external app” command (#1678)
- Added “Cut book” and “Copy book” commands (#1678)
- Added “Copy book to folder” and “Move book to folder” commands (#1678)
- Added “Export book” command. Outputs the current book to a folder or
file (#758)
- Added “Rename book” command. Renames the current book’s file (#1837)
Table of Contents in Page
List
Added Table of Contents to the page list.
Displayed via the “Contents” button in the Page List panel.
Shows archive folder hierarchy or PDF outlines as a tree.
- Added Table of Contents to the page list (#1201)
- Added TOC support for playlist books (#655)
- Added “Open as book” to TOC tree item menu (#655)
Standard page navigation
direction
The default book opening direction is now set at first launch or when
initializing commands.
Page-navigation shortcuts are initialized based on this direction.
- Added page-direction settings to command presets (#1870)
Added
- System: Added option to delete only invalid thumbnail cache entries
(#879)
- App Settings: Added “SoftwareRendering” flag to settings.json (#1896)
- Theme: Added item for coloring critical-action buttons red (#1904)
- Command: Added “Preset scroll” command. Scrolls to a position
specified by parameters (#1277)
- Command: Added “Rewind video” and “Fast forward video” commands (#1882)
- Book: Added Sort by Type (Sort by Extension) to
page sorting (#708)
- Book: Added book-page initialization mode for end-of-book navigation
(#1644)
- View: Improved Movement Constraints under “View
operation”.
“Snap” keeps the view centered when possible (#1645)
- View: Added setting for initial horizontal alignment based on book
opening direction
- View: Added ratio setting for initial center alignment (#1760)
- Slider: Added mouse-wheel behavior settings for page slider and
filmstrip (#449)
- Bookmark: Added option to restore bookmark-folder location at
startup (#1919)
- Bookshelf: Added item for moving to parent folder (#1015)
- Script: Added “@argsDescription” doc comment for
script arguments (#1846)
- Script: Added multi-line support for script doc comments (#1938)
Changed
- System: Unified placeholder format from “$Name” to C#-style “{Name}”
(#1905)
- System: When expanding archive entries, duplicate filenames are now
placed in subdirectories (#1808)
- System: Playlist and bookmark link-broken flags are now saved (#1871)
- System: Added “.cbt” to standard archive extensions (#1921)
- System: Suppressed automatic syncing of book settings and panel
layout settings (#1884)
- System: Book-thumbnail priority filename now uses regular
expressions (#1949)
- System: Added filename format options when saving images (#1477)
- Command: “Move to folder” now updates bookmark paths and similar
items (#1873)
- Command: Added toggle-mode settings to toggle-type command
parameters (#1718)
- Book: When sorting pages by name, sorting is now performed per
directory hierarchy (#1918)
- Book: End-of-book dialog now closes when it becomes inactive (#1860)
- Book: Applied “Static two pages” correction to the “Prev/Next x
pages” command (#1191)
- Window: Added setting for activating window on file drop (#1954)
- Window: Main window is now activated when closing a subwindow (#1143)
- UI: Updated scrollbar style (#1099)
- UI: Added auto-hide setting for scrollbars (#1901)
- UI: Improved behavior of auto-hide panels and show/hide commands (#1499)
- UI: Version dialog can now be closed with ESC (#1924)
- UI: Wheel scroll amount now reflects OS settings (#1941)
- UI: Improved color picker; color button now opens edit popup (#1956)
- View: Other operations are now allowed during auto-scroll (#1910)
- View: Added “Scroll” and “Fade” options for page transitions when
not in panorama mode (#1883)
- View: Removed “Scaling (horizontal slide,
centered)” from mouse operations; replaced by “Snap” in
Movement Constraints
- Panel: Smoothed thumbnail popup switching (#1346)
- Panel: Added icon overlay settings for thumbnail display (#1946)
- Panel: Added wrap-around support for left/right keys in thumbnail
view (#1832)
- Bookshelf: Added ability to register multiple bookmarks at once (#1923)
- Bookshelf: When auto-syncing folder tree, selection is not changed
if the tree already has focus (#1161)
- Bookshelf: Multiple exclusion patterns can now be stored (#1877)
- Bookshelf: Subfolder loading settings now propagate to child folders
(#673)
- Bookshelf: Moved thumbnail assignment to the top of the context
menu; added menu shortcuts (#1950)
- History: Added confirmation dialog when deleting history (#935)
- Navigator: Auto-rotation is now reflected in navigator thumbnails
(#1641)
- Bookmark: Added “Last Updated” timestamp to bookmark folders (#1928)
Fixed
- System: Fixed issue where closing the settings window via the
settings button did not trigger save processing (#1897)
- System: Fixed issue where settings might not update when NeeView is
launched via external commands (#1915)
- System: Fixed issue where closed-book state was not saved (#1927)
- Book: Improved issue where toggling “Show first/last page alone” did
not update display (#1937)
- UI: Fixed issue where system accent color could be difficult to see
(#1917)
- View: Fixed incorrect behavior of 1:1 display when trimming or
splitting pages
- View: Fixed blurring under certain conditions when resize filter was
ON (#1911)
- View: Fixed page-movement issue in panorama mode when the reference
position was not centered (#1914)
- Playlist: Fixed path-following issues (#1893)
- Playlist: Fixed issue where non-default playlists were not
registered for file tracking (#1888)
- Playlist: Fixed issue where playlists could fail to update under
multiple instances (#1887)
- Playlist: Fixed issue where underscores in destination playlist
names were omitted in item menu (#1944)
- Script: Fixed occasional failures in long-running
CopyPage() operations (#1862)
Please see here
for the previous change log.