This is a hotfix for brush rendering to not occasionally have segments that are drawn twice.

The 5.1.6 update was a hotfix for a memory leak, and also updated the bundled JPEG XL plugin to fix a crash on ARM64.

The 5.1.5 update added JPEG XL (*.jxl) support, improved quantization color quality, updated AVIF loading to better handle mapping HDR images to SDR, and fixed some bugs.

Get the Update

There are two releases of Paint.NET:

• Microsoft Store release (recommended)

  • You can purchase it here. This helps fund development and is an alternative or supplement to sending in a donation. In addition, updates happen automatically in the background when you’re not using the app.
  • If you already have it installed, the update should happen automatically once Microsoft certifies the update, usually within the next day or so. To get the update immediately (once it’s certified), you can follow the instructions listed here.
• Classic Desktop release
  • Download the installer from the website. This is the recommended download if you don’t have Paint.NET installed. It can also be used to update the app.
  • If you already have it installed, you should be offered the update automatically within the next few days, but you can also get it immediately by going to ⚙ Settings -> Updates -> Check Now.
  • Offline Installers and Portable ZIPs are available over on GitHub.

Change Log

Changes since 5.1.6:

• 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!).

Changes since 5.1.5:

• Fixed a memory leak when flattening an image and then undoing that change.
• Updated the bundled JpegXLFileType plugin to v1.1.2 to fix a crash on ARM64 (thanks @null54!).

Changes since 5.1.4:

• 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!).