book-links

A Violentmonkey userscript that shows where else you can get a book while you're browsing one — Anna's Archive and Waterstones — as a small floating widget in the corner of the page.

Install

1. Install Violentmonkey (Chrome, Firefox, Edge).
2. Install the script from the raw file: book-links.user.js — Violentmonkey will prompt to install it.

The script auto-updates itself from this repo (via @updateURL), so you don't need to reinstall it when it changes.

What it does

On a book page on Bookshop.org, Amazon (.fr/.com), or Waterstones, it:

1. Extracts the book's ISBN (from the URL or page content) and, as a fallback, title/author.
2. Checks whether the book is available on:
   • Waterstones — skipped if you're already on Waterstones
   • Anna's Archive
3. Shows a small widget in the bottom-right corner with a ✓ link if found, a ✗ if confirmed not found, or a ? link if it couldn't be verified (e.g. JS-rendered search results) — closeable with the × button.

Supported sites

• bookshop.org/p/books/*
• waterstones.com/book/*
• amazon.fr and amazon.com product pages (/dp/*)

Notes

• Uses GM_xmlhttpRequest to query Anna's Archive and Waterstones directly from the page, bypassing CORS.
• Availability checks are best-effort text matching against search results, not an official API — the ? state means "couldn't confirm either way, here's the search link."

License

MIT — see LICENSE.