Examine source code of Redirectify-CERN

{
  "manifest_version": 2,
  "name": "Redirectify-CERN",
  "version": "0.2.0",
  "description": "Redirects requests for PDFs of papers at some popular sites to their corresponding HTML index pages. This is a CERN-specific fork.",
  "homepage_url": "https://github.com/dguest/redirectify",
  "permissions": [
    "*://*.arxiv.org/pdf/*",
    "*://xxx.lanl.gov/pdf/*",
    "*://arxiv-export-lb.library.cornell.edu/pdf/*",
    "*://*.openreview.net/pdf*",
    "*://proceedings.mlr.press/*.pdf",
    "*://*.jmlr.org/papers/*.pdf",
    "*://jmlr.csail.mit.edu/papers/*.pdf",
    "*://delivery.acm.org/*",
    "*://papers.nips.cc/*.pdf",
    "*://pdfs.semanticscholar.org/*",
    "*://*.biorxiv.org/content*",
    "*://indico.cern.ch/event/*/attachments/*.pdf",
    "*://cds.cern.ch/record/*/files/*.pdf",
    "*://*.m.wikipedia.org/*",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "redirectify.js"
    ]
  }
}