Pixiv Tookit is a webextension for Pixiv users. You can download animation, manga, illusion and novel from Pixiv with using this.
If you are using Chrome, you can download it from Chrome web store.
If you are using Firefox, you can download it from Firefox Add-ons.
If you are not using Chrome or Firefox, you can try clone the project to your local machine, and build the extension by yourself.
To build the extension, you need these tools below:
After you install these, run commands step by step:
npm run build # build for Chrome
npm run build:firefox # or build for Firefox
Then you can install the extension manually.
There is a layer with a arrow will appear at the center bottom of the page if the page has available content. Click the arrow to active the action panel, then enjoy.
Please feel free to submit a issue if you have trouble with using this.