4.2.15 is now available

This is a small update that improves some quality-of-life issues, and fixes some important crashes due to mishandling of some non-fatal DirectX errors.

If you’re using the Windows Store release, you should get the update automatically within the next 24 hours. You can also force an update check by following these instructions.

For the Classic release, you should be offered the update automatically within the next week or so. You can get the update sooner by going to ⚙ Settings → Updates → Check Now. You can also download and install it directly from the website.

List of changes since 4.2.14:

  • New: "Tolerance Alpha Mode" toggle button added to the toolbar for the Magic Wand, Paint Bucket, and Recolor tools. This permits switching the algorithm for color comparison between premultiplied (default) and straight. "Straight" will distinguish between transparent pixels with different color values, whereas premultiplied will see them as equivalent.
  • New: Holding Ctrl while using the Color Picker tool will sample from the merged image (vs. just the current layer)
  • New: The file name in the title bar will now have a prepended asterisk when it has unsaved changes
  • Changed: The image close ‘X’ button can now be clicked for images that are not currently active
  • Changed: In the Text tool, Ctrl+(Backspace, Delete, Arrow Keys) has been improved to work more like Microsoft Word. Thanks to @Bruce Bowyer-Smyth for the patch!
  • Fixed: The Rectangle Select tool, when used to draw a constrained, fixed ratio, or fixed size selection, will now correctly clamp the rectangle to be within the canvas
  • Fixed: Layers -> Move Layer Up/Down/Top/Bottom was not working for images with fewer than 3 layers
  • Fixed: Edit -> Erase Selection will now fill with transparent black (#00000000) instead of transparent white (#00FFFFFF)
  • Fixed: Custom Shapes will now be displayed in a consistently sorted order
  • Fixed: ".pdnSave" ghost files should no longer linger when saving to the desktop. This was due to a bug in Windows and File Explorer.
  • Fixed crashes due to DXGI/Direct3D "lost device" or "device removed" errors that can happen for various reasons (duck/undock, driver update, low memory, etc.)
  • New: Plugins can now use the IArrayPoolService, a wrapper around .NET’s ArrayPool, to optimize their array allocations
  • Updated bundled AVIF FileType Plus to v1.1.6. See the pdn-avif releases page on GitHub ( for more information.



12 thoughts on “ 4.2.15 is now available

  1. Jason says:

    Good morning,

    I came across a couple of bugs in 4.2.12 where one appears to have been fixed in 4.2.15 but the other has not. I’m using a different PC with 4.2.15 and different images so I can’t be certain if the one issue has been fixed or if it’s just not occurring at this time – I do not see a mention of it in the list of “Fixed” items above.
    In each test I had 3 images open where I had increased the width of the canvas with the original image centered such that both sides had vertical margins of a couple of inches wide or so.

    Issue #1: If I selected a color and then filled the empty spaces on the left & right sides of the original image these would not appear in the thumbnail at the top of the application (they would still appear white). This appears to be working OK in 4.2.15.

    Issue #2: If I filled the outer edges of the first image in blue and then went to the second image and filled the left outer edge in blue but filled the right outer edge in red, if I then returned to the first image the right outer edge would be filled in red as though the two regions in two different images were somehow related. I had not filled this region in red – it should have still been blue. This is still occurring in 4.2.15 but, what’s interesting, is that while the thumbnail refresh appears to be working OK in this build (Issue #1), the thumbnail of the 1st image does not update to reflect the right outer edge being colored red (which of course it shouldn’t have been).

    Please let me know if any additional info is beneficial.



  2. Martin says:

    Dear Rick,

    can we get a “Delete” / “Move to Recycle Bin” option inside the recently introduced top image toolbar’s context menu?

    I’m using PDN as a full image viewer replacement, i. e. no Photos app installed anymore, hence e. g. images which are attached instead to of embedded in an e-mail are opened with PDN, but won’t be delete upon closing it again.

    Thanks in advance & stay healthy these days,

  3. darthvitrial says:

    Out of curiosity, is there any way to change the eraser to be square instead of circular? It feels like that would make neatening up drawings easier.

  4. DW says:

    Sent a 100 bones via paypal. PDN rocks! The windows store however sucks big time – please keep the zip installer download available for those who always remove the win store app & related.

    • Rick Brewster says:

      Thanks! I really appreciate it 🙂 I don’t really have plans to discontinue the classic/zip version, although eventually Win7/8 will be dropped. Probably around the time Chrome/Firefox announce they’re doing the same.

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