## 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

- NeeView Portal Site

## Support Contact

Create your issue on GitHub.

- NeeView (GitHub)

Or comment on our blog.

- ヨクアルナニカ

## License

MIT License

Copyright (c) 2016-2025 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

- Copyright (C) 1999-2018 Igor Pavlov.
- URL: 7-Zip
- License: GNU LGPL + BSD 3-clause License + unRAR restriction

### SevenZipSharp

DLL: SevenZipSharpNE.dll

- Copyright (C) Markovtsev Vadim 2009, 2010
- URL: SevenZipSharp - Home
- License: GNU LGPL
- Changed:
  - VS 2015 project: Project Page
  - RAR5 Support: Project Page

### Material design icons

ICON: ic_help_24px, etc…

- Google (C)
- URL: Google Fonts
- License: Apache License 2.0

### WPFDragAndDropSample

Code-in:

- Copyright (c) 2016 takanemu
- URL: WPFDragAndDropSample
- License: MIT License

### PDFium

DLL: pdfium.dll

- Copyright 2014 PDFium Authors. All rights reserved.
- URL: PDFium
- License: 3-Clause BSD License, Apache License 2.0

### PdfiumViewer

DLL: PdfiumViewer.dll

- Copyright (c) Pieter van Ginkel, Bluegrams
- URL: PdfiumViewer
- License: Apache License 2.0

### MagicScaler

DLL: PhotoSauce.MagicScaler.dll

- Copyright (c) 2015-2020 Clinton Ingram and Contributors
- URL: PhotoSauce (GitHub)
- License: MIT License

### .NET corefx

DLL: System.Buffers.dll, etc…

- Copyright (c) .NET Foundation and Contributors
- URL: .NET
- License: MIT License

### Icon Fonts

ICON: pushpin, etc…

- OnlineWebFonts.COM (C)
- URL: Icon Fonts
- License: CC BY 3.0

### VirtualizingWrapPanel

- URL: uhimaniavwp
- License: MS-PL

### SharpVectors

DLL: SharpVectors.*.dll

- Copyright (c) 2010 - 2018, Elinam LLC All rights reserved.
- URL: SharpVectors
- License: 3-Clause BSD License

### ProcessJobObject

Code-in:

- Copyright (c) Microsoft Corporation. All rights reserved.
- URL: VSTest
- License: MIT License

### Microsoft.Xaml.Behaviors.Wpf

DLL: Microsoft.Xaml.Behaviors.dll

- Copyright (c) 2015 Microsoft
- URL: XamlBehaviors for WPF
- License: MIT License

### Jint

DLL: Jint.dll

- Copyright (c) 2013, Sebastien Ros All rights reserved.
- URL: Jint
- License: BSD 2-Clause License

DLL: Esprima.dll

- Copyright (c) Sebastien Ros. All rights reserved.
- URL: Esprima .NET
- License: BSD 3-Clause License

### MetadataExtractor

DLL: MetadataExtractor.dll

- Copyright 2002-2019 Drew Noakes and contributors, 2014 Imazen LLC (initial conversion from Java to C#)
- URL: MetadataExtractor
- License: Apache License 2.0

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

### MediaInfo

DLL: MediaInfo.dll

- Copyright (c) 2002-2023 MediaArea.net SARL. All rights reserved.
- URL: MediaInfo
- License: BSD-style license

### Vlc.DotNet

- Copyright (c) 2014 ZeBobo5
- URL: Vlc.DotNet
- License: MIT License
- Changed:
  - Custom for NeeView: Project Page

### AnimatedImage

DLL: AnimatedImage.dll, AnimatedImage.Wpf.dll

- Copyright 2019 Thomas Levesque
- URL: AnimatedImage
- URL: WPF Animated GIF
- License: Apache-2.0 license
- Copyright (c) 2020 Jose M. Piñeiro and others
- URL: WebP-wrapper-animatedWebP
- URL: WebP-wrapper
- License: MIT License

### NetBeauty 2

- Copyright (C) 2022 nulastudio
- URL: NetBeauty2
- License: MIT License

### VirtualizingWrapPanel

DLL: VirtualizingWrapPanel.dll

- Copyright (c) 2019 S. Bäumlisberger
- URL: VirtualizingWrapPanel
- License: MIT License

### libwebp

DLL: libwebp.dll, libsharpyuv.dll, libwebpdemux.dll

- Copyright (c) 2010, Google Inc. All rights reserved.
- URL: libwebp
- License: BSD 3-Clause License

### kanaxs C# 拡張版 1.0.2

- Copyright (c) 2011, DOBON!
- URL: DoboWiki
- License: New BSD License

## Changelog

### 45.2

(2026-03-02)

#### 不具合修正

- History: Fixed an issue with the update timing of the registration order for items registered in the history (#1881)

### 45.1

(2026-02-23)

#### Fixed

- System: Fixed TAB key navigation (#1880)
- Panel: Fixed an issue where wheel scrolling in thumbnail view did not function properly (#1878)
- Setting: Fixed an issue where the “Explorer” page might not display (#1875)

### 45.0

(2026-02-16)

##### Important changes

> Important

> Installer version: The installation type has been changed to Per-User.

The installation type has been changed to per-user, and administrator privileges are no longer required for installation.
The previous per-machine installation cannot coexist and must be uninstalled first. If an older version is already installed, a dialog box prompting you to uninstall will be displayed and the installation process will be aborted. User data will remain even after uninstallation, so it will be carried over, but we recommend backing it up by exporting it just in case.
Context menu registration to Explorer is done in the settings window, just like the ZIP version.

##### Added

- Language: Added Spanish (#1820)
- System: Automatically update broken links such as bookmarks to the same NTFS local drive. This also applies to changes made when the app is not running. (#1784)
- Views: Added WebP animation support (#1798)
- View: Added hover scroll sensitivity setting (Settings > Mouse Settings > Hover Scroll Sensitivity) (#1804)
- View: Added a setting to keep the main view window on top (Preferences > Main view > MainView window stays on top when possible) (#1706)
- View: Add time priority setting to slideshow (Settings > Slideshow > Prioritize time) (#1843)
- View: Added a setting to set the magnification of the loupe to the original size (Settings > Loupe > Magnification is based on the original size) (#1347)
- Address bar: Add a settings button to the address bar (#1788)
- Address bar: Added setting to show bookmark dialog in address bar (Settings > Menu bar) (#1824)
- Settings: Added file association settings. Icons can also be changed. Only available in the ZIP and installer versions. (Settings > Explorer) (#1697, #1717)
- Bookshelf: Added “Automatically synchronize the folder tree” to Bookshelf settings (Settings > Bookshelf) (#1295)
- Bookshelf: Added a preferred image filename setting for book thumbnails. By default, it is set to “folder.jpg” (Settings > Book > Preferred image filename for book thumbnail) (#1853)
- Bookshelf: Allows individual book thumbnails to be specified (Bookshelf item context menu) (#389)
- Bookshelf: Bookshelf sorting and thumbnail settings are now saved in Folders.json.

##### Changed

- System: Changed to .NET 10 based. (#1839)
- System: Prevent duplicate entries in history etc. due to differences in case of UNC paths (#1778)
- System: Changed the path of the thumbnail cache for symbolic links to the path of the symbolic link itself (#1803)
- Books: Change page exclusion patterns to regular expressions (#1844)
- Books: Fix to not reopen a book when opening a page of the same book in a playlist (#1775)
- Book: Support for deleting and renaming pages in playlist books (#1805)
- View: Optimized resize filter application timing (#1799)
- View: Reduced playback delay when moving video position (#1774)
- View: Apply EXIF ​​Orientation to RAW images (#1813)
- Filmstrip: Changed the centering of the filmstrip to always center the view (#1845)
- Panel: Number of items and search box display for each panel can now be configured from the respective detail menus (#1835)
- Bookmarks: Added confirmation dialog when deleting invalid bookmarks (#1854, #1857)
- Playlist: Added confirmation dialog when deleting disabled playlist items (#1854, #1857)
- History: For books with only one page, the history is now registered when you try to move beyond the page (#1776)
- Settings: Preset options are now card-like (#1789)
- Settings: Added “Page read order” to welcome dialog

##### Fixed

- System: Fixed a bug where the menu shortcut display did not change when switching commands with the slider direction (#1828)
- Book: Fixed a bug where deleted pages could reappear (#1807)
- Book: Fixed a bug that prevented symbolic link images from being displayed in the playlist book.
- Views: WebP with alpha now displays correctly (#1822)
- View: Prevent the main view window from momentarily appearing in front when restored (#1815)
- View: Fixed bug where Unsharp Mask slider operation was not reflected immediately (#1830)
- View: Fixed a bug in detecting semi-transparent images (#1825)
- View: Fixed a bug where resize filters were not working for some image formats (#1809)
- View: Fixed a bug (#1821) where a white line would sometimes appear on the edge when changing from full screen to maximized window.
- Panel: Fixed HOME/END key behavior when panel thumbnails are displayed (#1817)
- Bookshelf: Fixed an issue where the quick list in the Home button menu might not display fully (#1869)
- Bookmarks: Fixed a bug where renaming in the bookmark panel was sometimes not possible. Renaming in the bookmark panel no longer opens a book (#1811)
- PageList: Fixed a bug where page list thumbnails sometimes did not load (#1816)
- PageList: Fixed an issue where folders and compressed files were not distinguished (#1868)
- History: Fixed a bug where history information was not updated when opening a book from history (#1818)

Please see here for the previous change log.