This is a pretty straightforward update, adding WebP (*.webp) support and fixing a few important bugs (like copy-paste from Firefox).
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.
Changes since 4.2.4:
- New: WebP images are now supported due to bundling @null54‘s excellent WebPFileType plugin (v1.3.0.0)
- Fixed: Pasting images from Firefox’s "Take a Screenshot" feature was resulting in swapped red and blue channels due to mishandling of DIB_V5 clipboard data using the BI_RGB value for bV5Compression (thanks @null54 for the fix!)
- Fixed crash at startup (for both app and installer) on Windows "N" editions due to missing mfplat.dll (Media Foundation Platform)
- Updated bundled DDSFileTypePlus plugin to v1.9.7.0
Enjoy!
paint.net blog 
please add .ai (Adobe Illustrator) file support?
Just download the plugin https://forums.getpaint.net/topic/28078-postscript-filetype-plugin-ps-eps-ai/
thanks but it does not work even with earlier Ghostscript versions
Okay well then talk with the plugin author to try and get it fixed
Add support for DDS BCn formats!
That was added in 4.2.2 https://blog.getpaint.net/2019/09/18/paint-net-4-2-2-is-now-available/
Thank you for your continued efforts on this excellent program. I learned a lot of photo editing techniques by using Paint.Net.
If this ever turns into a paying gig, you may want to bring @null54 along with you!
is there an auto-recovery system that saves your last session when paint.net unexpectedly closes?
No, there currently is not
Can you please add it? 🙂
When it’s possible to do so, sure. It’s not exactly a small work item. It’s an extremely large amount of work.
Looks like need just add function “save every [n] seconds” in options (same as MS Word) 🙂
It’s not that simple. There is major foundational work that needs to be completed to ensure the feature works well and isn’t just a nuisance. There’s nothing easy about it.
Thanks for the WebP support ^_^
My friend recommend Paint.Net to me 5 years ago and i cannot leave it anymore. Great application. Thank you for your effort!