Is FlashPlayer - SWF to HTML safe?

Low risk

FlashPlayer - SWF to HTML lets rendered SWF content request any website through the extension's network access.

When an SWF makes fetch or XMLHttpRequest calls, the player iframe forwards the requested URL to the parent extension page. The parent page fetches that URL using the extension's all-sites host permission and sends the response bytes back to the iframe without validating the requester or destination.

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

Chandler Stimsonv0.3.2Firefox Add-ons
17Risk
Who publishes it

Chandler Stimson - no other listings under this identity, 7 shared hostnames

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

Publisher
Chandler Stimson

Shared hosts - 7 hostnames

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.

armorgames.com
Also called by 1 other listing
chuckecheese.com
Also called by 1 other listing: FlashPlayer - SWF to HTML
meninasjogos.com.br
Also called by 1 other listing: FlashPlayer - SWF to HTML
nekogames.jp
Also called by 1 other listing: FlashPlayer - SWF to HTML
permadi.com
Also called by 1 other listing
revision.madrevision.com
Also called by 1 other listing
swf2js.wordpress.com
Also called by 1 other listing: FlashPlayer - SWF to HTML

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 0.3.2. 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

    *://*/*

  • Store data in your browser

    storage

  • Act on the current tab, but only after you click the extension

    activeTab

  • Run its own code inside the pages you visit

    scripting

  • Add items to the right-click menu

    contextMenus

  • Show you desktop notifications

    notifications

Updated 2 November 2026amo-2701746