Open SWF links of Adobe Animate (Flash) in a pure sandboxed JavaScript emulator
- By:
- Chandler Stimson
- Daily users:
- 4,350 -57
- Rating:
- 3.89 (18)
- Version:
- 0.3.1 Last updated: 2025-04-20
- Version code:
- 5933605
- Creation date:
- 2021-05-17
- Risk:
- Moderate risk impact Moderate risk likelihood
- Permissions:
- storage
- activeTab
- scripting
- contextMenus
- notifications
- storage
- Host permissions:
- *://*/*
- *://*/*
- Size:
- 9.44MB
- URLs:
- Website
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-14
Ranking
User reviews
Pros
- Allows playing SWF/Flash content within Firefox.
- Generally works well with many SWF files and Flash games.
- Includes a feature to convert SWF to JavaScript (SWD2JS engine).
- Enjoyed for enabling playback of Flash games and animations despite Flash's discontinuation.
Cons
- Does not automatically play embedded SWF files; requires manual activation.
- Incomplete support: does not work for all Flash games, especially those on certain sites like Kongregate and pet sites.
- The SWD2JS engine is a clone of the Ruffle engine and lacks ActionScript 3 support.
- Some SWF files (like those on specific websites) fail to load or display properly.
Recent reviews
by 远离*****, 2025-03-26
by 远离*****, 2025-02-13
by wu*****, 2024-11-04
Extension safety
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk
impact extension cannot do much harms, whereas a high risk impact extension can do a lot of
damage like stealing your password, bypassing your security settings, and accessing your
personal data. High risk impact extensions are not necessarily malicious. However, if they
do turn malicious, they can be very harmful.
FlashPlayer - SWF to HTML requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
- Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious.
This is determined by the publisher and the Firefox add-on reputation on
Firefox Browser Add-ons, the amount of time the Firefox add-on has been
around, and other signals about the
Firefox add-on. Our algorithms are not perfect, and are subject to change
as we discover new ways to detect malicious extensions. We recommend that you always
exercise caution when installing a Firefox add-on.
FlashPlayer - SWF to HTML is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare FlashPlayer - SWF to HTML vs Flash Player 2021
- Compare FlashPlayer - SWF to HTML vs Flash Player Emulator 2025
- Compare FlashPlayer - SWF to HTML vs Flash Player
Similar add-ons
Here are some Firefox add-ons that are similar to FlashPlayer - SWF to HTML:

Flash Player 2021
17029170

Flash Player Emulator 2025
Casino QQ88

Flash Player
Vanchi Flash

Flash Player 2022
ModernKit.one

Ruffle - Flash Emulator
Ruffle

Flash Debugger
O-Minds

No CORS for swf
名無し。

flashvideotohtml5
Firefox user 12598792

Flash Player Forever
ClintonHall
Popular extensions / apps
Here are some popular extensions / apps that you might be interested in:
Nu
Nu

uBlock Origin
Raymond Hill
RoboForm Password Manager
https://www.roboform.com/
DeepL: translate and write with AI
DeepL SE
uBlock Origin Lite
Raymond Hill (gorhill)
StayFocusd - Block Distracting Websites & Web Analytics
https://stayfocusd.com

Ghostery – Privacy Ad Blocker
Ghostery
WOT: Website Security & Safety Checker
https://mywot.com
AdBlock — block ads across the web
http://getadblock.com/
Spider Fighter 3: Action Game
Starplay DMCC
Block Blast!
HungryStudio
Google Family Link
Google LLC