Paint.NET是一個圖像和照片處理軟件，它由華盛頓州立大學的學生開發和維護，使用C#語言開發，並由微軟公司提供項目指導。早期定位於MS Paint的免費替代軟件，現在逐漸發展為一個功能強大且易用的的圖像和照片處理軟件。這次新版Paint.NET改進用戶界面、調整了菜單欄/狀態欄等功能，其次也對軟件性能優化以及bug修復。

Paint.NET原生支持64位Windows平台，內置圖層、無限制的歷史記錄、特效等多項實用工具，並且開放源代碼，完全免費，支持多國語言。如果你的電腦使用photoshop很卡，如果你想要一個啟動迅速並且小巧的圖片修飾軟件，Paint.net是一個非常不錯的選擇！

Language（語言支持）： English, Chinese (Simplified), Chinese (Traditional),Czech, Danish, Dutch, Finnish, French, German, Hindi, Hungarian, Italian, Japanese, Korean, Lithuanian, Persian, Polish, Portuguese (Brazil) , Portuguese (Portugal), Russian, Spanish, Swedish

System（系統支持）：Windows 7 SP1 or newer (including Windows 8, Windows 8.1 and Windows 10 )

Paint.net圖片編輯器的特點和功能：

1、它擁有ps一樣的操作界面。是的，它的操作界面和photoshop一模一樣。並且它還有自己的特色，在右上角它會用縮略圖的形式顯示你打開的所有圖片，一些側邊的工具欄你也可以隨便拖動到任何位置。

2、擁有ps大多數的工具。你可以在左側找到熟悉的魔術棒，橡皮，填充，畫筆，漸變，取色，克隆，矩形等很多工具。並且還能更改它們的大小，形狀和填充樣式。我想這些也夠用了。

3、擁有7大類強大的圖像處理修飾濾鏡。包括變形，風格化、模糊、相片、渲染、藝術、雜化。這其中有拍照後非常需要的去紅眼濾鏡，也有十分有趣的素描濾鏡。

4、擁有“圖層”功能，和gimp和sumo一樣，中文、免費、開源，體積上是精簡版的ps 功能上擁有ps的大部分功能的Paint.net也擁有強大的圖層工具，可以看出其不是一般的圖片處理軟件，已經十分的專業了。利用圖層功能，你可以方便的修改圖片的任何一部分，而不用擔心失誤會搞糟整張圖片。

5、它可以調整圖片的亮度對比度等功能，如果你是一個ps達人，那麼一定經常使用ps中強大的曲線工具，這個軟件也有這個工具哦！並且它也帶有“標尺”功能，如果你要製作網頁模板，那麼Paint.net是一個非常不錯的圖片切割工具，因為標尺功能可以很方便的讓你計算圖片的大小。

6、帶有無限撤銷功能，這個功能就不用再說了，任何人都需要後悔藥的。

7、軟件十分的小巧。Paint.net小到什麼程度？安裝包只有3M不到！你沒有聽錯，是的，它就是那麼小，但卻共有ps中所有我們常用的功能，把它稱作是一個mini版的photoshop也不為過哦！

paint.net 4.2.1 – August 7th, 2019
This update addes JPEG XR file type support and fixes several important issues and crashes.

• New: JPEG XR file type support (Windows 8.1+ required)
• Fixed: Holding Ctrl when dragging a selection with Move Selected Pixels will again leave a copy behind (but only with the mouse)
• Fixed crashes when saving DDS images
• Fixed VTF file type plugin. It was not working in 4.2 except for images that were an exact power-of-2 size on each dimension.
• Fixed: .BMP files can be opened even if they’re not actually BMP images (they still need to be a valid WIC-supported file type such as PNG, JPEG, etc.)
• Fixed very bad performance when opening large images with embedded rotation metadata
• Fixed various crashes, such as when using File->New or Image->Resize, that sometimes happened if the previous update needed a reboot but either 1) it didn’t tell you that, or 2) it did but you didn’t reboot
• Fixed the problem that was causing the need for the aforementioned reboot in the first place (string resources file was locked by the thumbnail provider shell extension)
• Fixed: Text tool will no longer draw tiny text when an image uses dots-per-centimeter instead of dots-per-inch
• Fixed menu ordering of effect plugins that have duplicate names
• Fixed: The mouse wheel may now be used to scroll the Palettes menu in the Colors window (thanks @AndrewDavid for the suggestion and @toe_head2001 for the fix!)
• Fixed metadata handling that was preventing some images with EXIF tag 330 from being able to load
• Fixed metadata preservation for old images that pad EXIF string values with null terminators
• Fixed title bar text color when using certain custom accent colors in Windows 10
• Fixed title bar accent color when Tablet Mode is enabled

paint.net 4.2 – July 13th, 2019
This is a big update that focus on adding HEIC file format support, fixing performance with very large images, and upgrading and modernizing the functionality of many existing file types (JPEG, PNG, BMP, GIF, and TIFF). Many other quality of life issues have also been addressed or fixed.

• New: Support for loading and saving HEIC images (Windows 10 v1809+ and codec installation is required). Please note that the “Quality” slider when saving is limited to a value of 90 (out of 100) while Microsoft investigates and fixes a crash in their codec.
• New: Keyboard shortcuts for changing the current layer. You can see these in the Layers menu with the “Go to …” commands. Alt+PgUp/PgDown will go to the layer above/below, and Ctrl+Alt+PgUp/PgDown will go to the top/bottom layer.
• Fixed: Optimized rendering engine to remove huge lag spikes (30+ seconds) when zooming or panning very large images (eg 32K x 32K pixels).
• Improved: BMP now supports saving in 32-bit (with alpha!) and 8-bit indexed.
• Improved: Added DIB and RLE file extensions to the BMP file type.
• Improved: PNG, JPEG, and TIFF now support loading and saving of much larger images.
• New: PNGs can now be saved as “interlaced”.
• Improved: JPEG now has configuration for the chroma subsampling mode (4:4:4, 4:2:2, and 4:2:0). The default is now 4:2:2 instead of the unconfigurable 4:2:0 of older versions. This may result in larger file sizes, but higher quality, as compared to previous versions.
• Improved: TIFF now supports saving at 24-bit and 8-bit color depths.
• Improved performance of saving for file types where “Auto” bit-depth is supported but is not the current choice.
• Improved temporary memory usage when saving images at 8-bit color depth.
• Improved: TGA images now load about 4x faster (thanks @null54!)
• Fixed: 8-bit TGA images should now load correctly (thanks @null54 for the fix!)
• Fixed: Some 32-bit TGA images were showing up as completely transparent due to their use of an obscure alpha channel type (thanks @null54 for the fix!)
• Improved: Added error reporting to the Save Configuration dialog. Instead of just saying “Preview: (error)”, you’ll also get the standard error dialog that includes the exception which can used for troubleshooting.
• Fixed a number of performance issues in the Save Configuration dialog. Especially with large images, it should now be much faster to change options and to click OK/Cancel.
• Fixed flickering in the Save Configuration dialog when changing options.
• Fixed: Windows Explorer thumbnails for some image types (PDN, DDS, TGA) were not rendering their alpha (transparency) correctly, resulting in color skew. You may not see the effect of this fix for a particular image until that image is resaved or you clear Explorer’s thumbnail cache.
• Fixed: Mouse cursors now scale appropriately for non-integer UI scales (eg 125% or 175%)
• Fixed: AltGr should now work correctly with the Text tool. It will not trigger shortcuts like File->Save All, or Edit->Paste into New Image. (thanks @Bruce Bowyer-Smyth for the fix!)
• Changed: Image->Resize supports Super Sampling again, and favors this over Fant when using Best Quality. Fant is still available, but is no longer chosen automatically.
• Changed: Holding Ctrl when starting to move a selection with the Move Selected Pixels tool will no longer leave behind a copy of the selected area
• Fixed: Bicubic resampling in the Move Selected Pixels tool was not correctly handling the alpha channel in some cases. This fix has required a reduction in performance.
• Improved: When using Edit->Copy, a 32-bit BGRA bitmap in the DIBV5 format is now placed onto the clipboard so that other apps can read the alpha channel.
• Improved: When using Edit->Paste, DIBV5’s are now supported if they have an alpha channel. If they don’t, then the regular DIB loader is used which has some heuristics for detecting an incorrectly defined alpha channel and correcting for it.
• Improved: When using Edit->Paste, PNG is now the highest priority format. This maximizes the ability to maintain alpha/transparency, but it does mean that images coming from Microsoft Office apps will appear larger than they used to. This is either a bug or a feature of Microsoft Office. For some reason it places PNGs on the clipboard that are 25%+ larger than the DIB/DIBV5 bitmap that it also places on the clipboard (but which don’t have alpha/transparency).
• Fixed: DIBV5 bitmaps should now work with Edit->Paste, which improves alpha channel handling. (thanks @null54 for the fix!)
• Fixed: Top-down DIBs should now work correctly with Edit->Paste. (thanks @null54 for the fix!)
• Improved CPU usage for thumbnail updates (layers and image tabs) in many cases.
• Improved: Slightly increased the size of the Settings dialog to reduce the need for scrolling in a few important situations
• Fixed: Simple message boxes can now be closed with the ESC key
• Fixed: Magic Wand now works on very large images (eg 65535 x 65535 pixels) without an error.
• New: Plugins that use IndirectUI can now use a UriProperty with a LinkLabel control (thanks @null54!)
• New: Effect plugins can now more easily make use of the clipboard via the IClipboardService. It will handle all of the tricky clipboard issues such as threading, native data marshaling, and avoiding security vulnerabilities that exist in the standard WinForms and WPF clipboard APIs.
• New: FileType plugins can now specify separate lists of extensions for loading and saving.
• Blocked the WebP FileType v1.1.0.0 plugin due to instability. An update is already available.
• Blocked the ImAgif FileType v0.12.0.1084 plugin due to incompatibility. An update will hopefully soon be available.

官網地址： https://www.getpaint.net/

官網更新記錄： https://www.getpaint.net/roadmap.html

軟件下載地址：

官網最新版：https://www.dotpdn.com/files/paint.net.4.2.1.install.zip