WebP Support

[Henry]

When the Pinta will start to support format WebP?

[grofaty (grofaty)]

It looks like there is a WebP plugin in development at https://github.com/PintaProject/WebPAddin but don't know if it is finished yet. I can't see any binary file, so it probably means it has to be compiled. I also see this plug-in is not available in Add-ins | Add-ins Manager | Gallery tab | | Repository: All repositories | File Formats.

I hope project maintainers can write some additional info.

[Nico (nicohood)]

What is the status of this. Since webp now becomes more mainstream (for example wordpress support), it makes sense to also add it to pinta.

[Cameron White (cameronwhite91)]

I think that WebP addin is available on Linux, although IIRC it relies on having libwebp installed on the system.

Built-in support could be something to think about for the GTK3 branch, where we could potentially use any WebP packages that are on Nuget, and that might simplify having to build & bundle libwebp with Pinta on other platforms.

I don't think Gdk.Pixbuf has gained any built-in support for webp images, or else that would already be working in Pinta :)

[Cameron White (cameronwhite91)]

I found https://github.com/aruiz/webp-pixbuf-loader which if installed would probably enable webp support without any changes in Pinta. It's not in a ton of distros yet though

[Cameron White (cameronwhite91)]

I've now tested the webp-pixbuf-loader on Manjaro (where it's already available in the repos), and it works great
I'd say this seems like the best approach to take since it's just a matter of packaging and doesn't require any extra maintenance in Pinta itself.

This could be included in the snap / flatpak packages.
For the Windows / Mac installers we'd have to be bundling libwebp anyways, so also including webp-pixbuf-loader is hopefully not a problem...

[Cameron White (cameronwhite91)]

webp-pixbuf-loader is now bundled with the macOS installer, and is noted as a suggested dependency for Linux packagers.
A remaining TODO would be to figure out how to package this with the Windows installer, but I don't think that needs to be a blocker as I'd like to do a Pinta 2.1 release in the near future