Bookwalker Cover Grabber
Book Walker's often very large volume covers can be very useful for use in making character images or banners, or simply to have a very high quality cover you can immediately upload to the website for the XL cover feature.
Make a new bookmark and paste the following JavaScript in the Address/URL field:
javascript:(function(a){var b=document.createElement("textarea"),c=document.getSelection();b.textContent=a,document.body.prepend(b),b.style.position='fixed'}("https://c.bookwalker.jp/coverImage_" + (parseInt($('meta[property="og:image"]').attr('content').split("/")[3].split("").reverse().join(""))-1) + ".jpg"))()
Find the volume you want to use the cover of and press the bookmark
Example: 紺田照の合法レシピ(1)
A box will pop up containing a direct link to the larger image which you can paste into a new tab to access and save. Example: https://c.bookwalker.jp/coverImage_1936781.jpg
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