Convert .swf to html5

With Adobes flash on the decline, there is a definite need for alternative technologies such as html5.

Currently I am studying for the CWNA, Cisco Wireless Network Administrator Certification. I purchased the study guide and test certificate online while it was on sale.

The creators were kind enough to offer a cd with practice tests and flash cards included. Wanting to cover all forms of technology they included a Flash version of flash cards, a Pocket PC version and a Palm Os version. While, I appreciate the gesture, Pocket PCs and Palms are dead. That leaves Flash which won’t run on my iPad, iPhone or my Mac because I refuse to install flash on my computer. The only way I can interact with them is with Chrome since it includes its own sandboxed version of flash.

I found and alternative. Google has been working on a converter for flash content called Swiffy. It is in beta, as with practically all google applications. It promises to take a flash .swf file and convert it into a html5 document. Sounds sweet.

It does require that you have adobe extension manager installed.

If you want to try it out, you can download it from google’s site.



This doesn’t work if the flash file is protected. You will get an error: Can not open a protected movie


In order to bypass this step, you must unencrypted it. The proper way to go about it is to contact the developer and request or purchase a copy of the .fla file.

If you have a circumstance where the developer is unavailable or out of business, the only option is to decrypt it. I can not promote decrypting code you do not own.

Suppose you wrote the program yourself, and you want to see how secure your own code is, you could try out a site such as


As always, I am open to feedback. Feel free to offer your solution or suggestions in the comments below.


About spuder
spuder is a "super computer" support engineer by day, and tinkerer / hobbyist by night.

One Response to Convert .swf to html5

  1. Hey There. I found your blog using msn. This is an extremely well written article.
    I’ll be sure to bookmark it and come back to read more of your useful info. Thanks for the post. I will definitely return.

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