Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of FlashPlayer - SWF to HTML

FlashPlayer - SWF to HTML by Chandler Stimson

Open SWF links of Adobe Animate (Flash) in a pure sandboxed JavaScript emulator

3.9 (18 reviews)3.9 (18 reviews)
4,139 Users4,139 Users
You'll need Firefox to use this extension
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Usage Preview:
https://www.youtube.com/watch?v=80RWHX9_ZlQ

This extension plays SWF objects of Adobe Animate (Flash) in a pure JS emulator without the need to have a native Flash plug-in like Adobe FlashPlayer. The extension uses the open-source swf2js library as its emulation engine. By default, the extension does not play Flash objects instead, the user presses the toolbar button for the extension to find all available Flash objects or links in the current webpage. It will offer the user to select the proper SWF object and then send the link to a stand-alone emulator window. This way Flash objects are only functioning when there is a request. For Flash links, the extension adds a context menu item to these links so you can directly emulate an SWF link.

Features:
Runs a pure JavaScript-based Flash emulator
Does not require any native plug-ins
Run in a private sandboxed window to protect the user privacy
Use two different engines: Ruffle (https://ruffle.rs/) and SWF2JS (https://swf2js.com/)
Optionally emulate all embedded flash objects inside the page (use action's right-click context menu)

Notes:
This extension uses two open-source emulator engines. The SWF2JS library still does not support all methods available so some SWF objects may crash the engine.
The extension always tries to open the emulation window the same size as the actual Flash object, however, you can resize the window to the proper size anytime.
Rated 3.9 by 18 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
12
4
0
3
1
2
2
1
3
Read all 18 reviews
Permissions and dataLearn more

Required permissions:

  • Display notifications to you
  • Access your data for all web sites

Optional permissions:

  • Access your data for all web sites
More information
Add-on Links
  • Homepage
  • Support site
Version
0.3.1
Size
9.44 MB
Last updated
4 months ago (20 Apr 2025)
Related Categories
  • Web Development
  • Privacy & Security
Licence
Mozilla Public Licence 2.0
Version History
  • See all versions
Add to collection
Report this add-on
Support this developer

The developer of this extension asks that you help support its continued development by making a small contribution.

Contribute now

More extensions by Chandler Stimson
  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike Licence v3.0 or any later version.