Paint.NET

[Camel1965]

paint.net 5.1.5​

Mar 4, 2025

• New: JPEG XL (*.jxl) images are now supported by way of bundling @null54's JpegXLFileType plugin
• Fixed the Levels adjustment not honoring the active selection.
• Fixed some more mouse cursor issues when completing certain actions with certain tools.
• Fixed some keyboard shortcuts in the Adjustments menu not working reliably.
• Fixed most cases of tooltips blinking on/off when drawn near the bottom of the screen (thanks @toe_head2001!).
• Fixed some new high-DPI scaling issues in toolbar dropdowns.
• Improved quantization quality for Effects->Color-Quantize and when saving an image at 8-bit depth and below. This was done by merging octree node colors in linear gamma space.
• Fixed some incorrect background text color rendering in the status bar.
• Updated the bundled AvifFileType plugin to v3.12.0, which improves conversion from HDR images utilizing the Rec. 2020 PQ color space (thanks @null54!).
• Updated the bundled WebpFileType plugin to v1.5.0 (thanks @null54!).

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[Camel1965]

paint.net 5.1.5 (5.105.9201.27421)​

Mar 11, 2025

• New: JPEG XL (*.jxl) images are now supported by way of bundling @null54's JpegXLFileType plugin
• Fixed the Levels adjustment not honoring the active selection.
• Fixed some more mouse cursor issues when completing certain actions with certain tools.
• Fixed some keyboard shortcuts in the Adjustments menu not working reliably.
• Fixed most cases of tooltips blinking on/off when drawn near the bottom of the screen (thanks @toe_head2001!).
• Fixed some new high-DPI scaling issues in toolbar dropdowns.
• Improved quantization quality for Effects->Color-Quantize and when saving an image at 8-bit depth and below. This was done by merging octree node colors in linear gamma space.
• Fixed some incorrect background text color rendering in the status bar.
• Updated the bundled AvifFileType plugin to v3.12.1, which improves conversion from HDR images utilizing the Rec. 2020 PQ color space (thanks @null54!).
• Updated the bundled WebpFileType plugin to v1.5.0 (thanks @null54!).

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[Ircus]

paint.net 5.1.6 (5.106.9203.27857)​

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[Camel1965]

Paint.NET 5.1.7​

Paint.NET 5.1.7 - released on March 22nd, 2025
This is a hotfix for brush rendering to not occasionally have segments that are drawn twice.

• Fixed a bug in the UI system that was causing the brush tools to occasionally process pointer input events twice.
• Updated the bundled JpegXLFileType plugin to v1.1.3 (thanks @null54!).

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[Ircus]

Paint.NET 5.1.8​

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[Ircus]

Paint.NET 5.1.9​

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[Camel1965]

Paint.NET 5.1.11​

Paint.NET 5.1.11 - released on November 9th, 2025
This is a hotfix for 5.1.10 that fixes the DxgiAdapterService, which is used by plugins that initialize DirectX using their own interop.

• Fixed the DxgiAdapterService not implementing IDxgiAdapterService2 due to a bad merge conflict

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[Ircus]

Paint.NET 5.1.12​

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[Camel1965]

Paint.NET 5.2​

Paint.NET 5.2 -

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on November 10th, 2026
This is a major update that includes many performance improvements, quality of life fixes, 8 new effects, a rewritten layer rendering engine, and a completely new and modernized FileType plugin system. Much of the work has gone into preparing the app for the features and functionality that will be coming in the big 6.0 version that will be coming later (starting with new blend modes and layer folders). There are also 8 new effects and experimental support for running on Wine .

• Updated to use .NET 11. Note that on Intel/AMD, having a CPU with SSE4.2 is now a hard requirement.
• Added experimental Wine support which enables Paint.NET to run on Linux and Mac. You can download builds on
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  .
• New translation: Uzbek (uz)
• New:
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  NuGet package. You no longer need to manually add assembly references with paths that are hardcoded for your local system.
• New modernized FileType plugin system
• • Support for a wide variety of pixel formats. The classic BGRA32 is of course available, as well as RGBA64, CMYK, or even HDR formats like RGBA FP16.
  • Plugins can provide image data in HDR formats, which will be automatically tone-mapped and converted to BGRA32. Future versions of Paint.NET will support HDR natively and plugins will not need to be updated.
• Added CICP support for AVIF, JPEG XL, and PNG image files. This is also available for FileType plugins to make use of.
• Added HDR tone mapping support for AVIF, HEIC, JPEG XL, JPEG XR, and PNG. If the image file being opened is HDR then it will be converted to SDR in an appropriate manner. Eventually Paint.NET will have native support for HDR editing and this conversion process will be unnecessary.
• Rewritten and extensively optimized layer rendering engine
• • Precision is significantly improved by using 32-bit floating point (FP32) instead of 8-bit integer (UI8). This eliminates certain types of artifacts and incorrect colors that can happen in the old renderer with multiple layers.
  • Fully optimized for AVX2 and AVX512. Significant performance gains on systems with AVX512 support due to a high compute:memory ratio.
• Renamed Edit -> Copy Merged to Edit -> Copy Flattened.
• Significantly optimized the performance of copy-to-clipboard (Edit -> Copy and Edit -> Copy Flattened) by up to 95%
• Reduced temporary memory usage by 50% for Edit -> Paste into New Image.
• New: Paint Bucket and Color Picker now support holding Ctrl as a shortcut key for specifying Image sampling mode (aka "sample all layers").
• New: The Eraser tool now supports selecting a Fill pattern in the toolbar.
• Improved: When using Image->Resize and "Maintain aspect ratio", the rounding has been improved to reduce the aspect ratio error.
• Fixed a bug in the Move tools where shift-clicking on a side handle (north/south/east/west) would sometimes cause it to move on its own by 1-2 pixels.
• Fixed: The Colors window will no longer erase the hex field if an invalid character is typed.
• Fixed the tooltips in the File -> Open Recent menu by removing them (WinForms is just very buggy here). The directory paths are now shown on a second line of text instead.
• Renamed the "Move Selected Pixels" tool to "Move Pixels."
• New: Added a "Nearest Neighbor (Antialiased)" resampling mode to the Move Pixels tool.
• Substantial performance improvements for larger images. Fluidity of zooming and scrolling is significantly better. A lot of lag, hitching, and even pausing has been entirely eliminated.
• Optimized the performance of the canvas when the zoom level is >100% so that it only requires 1 rendering pass. This will mostly help to reduce power usage on laptops.
• Improved the latency of the brush tool's "preview cursor" by 1 frame.
• Added some extra digits past the decimal place for the zoom level in the status bar.
• Fixed a rare crash with the brush tools when adjusting the brush size. This crash could only be reproduced with external automation (e.g. macro record/playback with AutoHotKey).
• Fixed an issue when drawing a selection using the intersect combine mode that would make the selection disappear and cause other weird issues with history (undo/redo).
• Fixed a rare crash that could happen while switching tools while also changing the color
• Changed: The Move Selection and Move Pixels tools will now behave more intuitively when using constrained resizing (when holding shift). The aspect ratio that was used for a constrained resize used to be "locked in" when the selection was first drawn. The aspect ratio is now picked up when you start a constrained resize, and remembered until a non-constrained resize is performed.
• Renamed the Save Configuration dialog to Save Options.
• Fixed some cases of metadata not being preserved correctly.
• New: PNG tEXt/iTXt metadata is now preserved, which includes prompt and parameter information for images generated by Stable Diffusion et. al.
• Expanded and improved the imaging framework for plugins.
• • Added Rgb64, Rgb64Half, and Rgb128Float pixel formats.
  • Better support for a wider variety of color management transforms.
  • New interpolation modes for bitmap scalers (BitmapInterpolationMode2).
  • Channel extraction and channel replacement. This makes it easier to work with a variety of non-standard pixel formats (e.g. Gray+Alpha) that do not have direct support in the imaging framework.
  • Support for generic 2-channel pixel formats (ColorGenericXY[16, 32, 32Half, 64Float]). These are meant to be used with the aforementioned channel extraction and replacement support.
  • Support for alpha formats beyond 8-bits: 16-bit integer, as well as 16- and 32-bit floating point.
  • Better CMYK pixel format support, which enables importing CMYK32, CMYKA40, CMYK64, and CMYKA80 images.
• Improved reliability of some GPU effects/adjustments on certain older or low-end systems.
• Fixed some RNG in the Frosted Glass effect
• Fixed: Circles and ellipses drawn with the Shapes tool, with a 1 pixel brush size, and without antialiasing, are now rendered symmetrically.
• Optimized the Median Blur effect by 10-50% depending on the selected quality value.
• Optimized histogram calculation for Levels and Auto-Levels by about 20%.
• The "classic" (aka legacy) effect plugin system is now fully deprecated. Old plugins will still continue to work forever, but new ones can no longer be compiled.
• The "classic" (now legacy) FileType plugin system is now at the first stage of deprecation. You can still compile old FileType plugins but you will see a warning at compile time. The next major app update will turn the warning into an error.
• Added ControlInfoPropertyNames.AutoPopulateFileTypes, which when set to true on a FileChooser-typed property will cause it to be auto-populated with all FileTypes (built-ins and plugins) (thanks @toe_head2001!)
• Adjustments to the install and update workflow so that it only requests UAC elevation when it's actually necessary.
• Updated bundled AVIF FileType plugin to use the new FileType plugin system.
• Updated bundled DDS FileType Plus plugin to use the new FileType plugin system.
• • The Save Options dialog will now remember the original file's settings for the DDS format, mipmaps, and cubemaps.
• Updated bundled JPEG XL FileType plugin to use the new FileType plugin system.
• Updated bundled WebP FileType plugin to use the new FileType plugin system.
• Converted the SetupDownloader EXE from C# to C++, thus eliminating the last dependency on .NET Framework 4.8. This executable is used for the small "Any CPU" / "Web" installer.
• Fixed a scaling issue with the "compass" mouse cursor used by various tools (Move, Shapes).
• Fixed an
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  when the selection quality is set to "pixelated"
• Fixed an ultra-rare hang that could happen after opening an image or when the "Committing changes" progress bar was at 70%.

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