Pixiv Toolkit от Leo Ding

Convert ugoira to gif or/and webm, pack manga for downloading and download novel on Pixiv.
Convert the ugoira on Pixiv to GIF or WebM file, and pack the images of manga to download and download novel. The extension can also save your ugoira/manga visit history(Up to 10K items).

Notice:
This extension will work properly after you login to Pixiv.

Github:
https://github.com/leoding86/webextension-pixiv-toolkit
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Please report bugs and tell me what you need. Thanks!