Is DjVu.js Viewer safe?

Low risk

DjVu.js Viewer lets any website trigger extension-privileged DjVu loading and render cross-origin documents into the page.

DjVu.js Viewer scans all websites for embedded DjVu files and injects its viewer scripts when it finds one. A page can supply the DjVu document URL, causing the extension to fetch that document with its privileges and render the result back into the page DOM.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

RussCoderv0.10.0.0Firefox Add-ons
20Risk
Who publishes it

RussCoder - no other listings under this identity, 1 shared hostname

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
RussCoder

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

djvu.js.org
Also called by 1 other listing: DV

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.10.0.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

  • Add items to the right-click menu

    contextMenus

Updated 30 September 2026amo-971176