Batch resize - add option to convert to avif

[CHerSun]

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Recently I've started migrating to Obsidian for PKMS, sharing it for both mobile & desktop usage, syncing the vault. Image size becomes critical for both syncing and mobile usage, so I've rediscovered AVIF format, which gives huge savings.

Currently PicView allows to save individual files as AVIF, but there's no option in batch resize to use AVIF. For notes conversion - there loads and loads of images, it's annoying to convert each one separately. I can do that from CLI using avif tools, but I'd really love the option in PicView GUI.

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Add AVIF conversion option to batch resize dialog.

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libjxl cjxl

libavif

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[Ruben2776]

With the recent release of preview 6, the batch resize function has been restored, along with the options for .avif, .heic, and .jxl formats.

I'm planning on further improving the user interface of the batch resize window, but that will be in the future, after the other missing features have been reimplemented, and PicView has a full release.

[CHerSun]

Cool! Thank you!