swf2js.js is a JavaScript FlashPlayer emulator that analyzes SWF files of Adobe Animate (Flash) in real time and converts them to HTML.

Background

Basic usage

Options

Examples

Known problems

Information

This version of swf2js is an adaption based on swf2js.js version 0.7.8 from https://github.com/swf2js/swf2js.com/blob/master/assets/js/swf2js.js

swf2js.min.js is the minified version created with [Google Closure Compiler)(https://developers.google.com/closure/compiler).

Added support for sounds and soundstreams

• Sounds : mp3, raw (wave), ADPCM, NellyMoser.
• Soundstreams : mp3, raw (wave), ADPCM.

Warning : no support for Actionscript 3 which is introduced in Flash Player 9 (initially called 8.5).

Newer swf-files (version 9 and up) will probably still work, if you didn't useActionscript 3

If you have (or can find) Flash MX 2004 or Flash (Professional) 8, you can stil create sfw-files and use them with swf2js.js

Licenses for Adobe Flash can be found on https://helpx.adobe.com/en/x-productkb/policy-pricing/macromedia-legacy-activation-error.html

See https://github.com/swf2js/swf2js and https://swf2js.com/en/ for a commercial version that supports Actionscript 3.

<script type="text/javascript" src="swf2js.min.js"></script>
<script type="text/javascript">
    swf2js.load('SET SWF PATH');
</script>  

Example usage of options.

function informMe(arg) {  alert("informMe : swf-file loaded"); }

swf2js.load('tiger.swf', {tagId: "swf_instance", width: "320", height: "320", callback : informMe, bgcolor: "black"});

See example_options.html

Examples

Animated music

• More than one swf-file in a page does not work properly.
• Obviously Adobe FlashPlayer knows the exact frame size, even if bigger than the specified framesize in the header.
  See examples : mogura and PlayPauseStop5
• Video (mp4 and flv) not supported.

See also https://swf2js.com/en/#skills for the differences between the free and the commercial version.

SWF FILE FORMAT SPECIFICATION VERSION 19 at https://www.adobe.com/content/dam/acom/en/devnet/pdf/swf-file-format-spec.pdf

This gives information on the internal format of swf-files, but no information how Adobe FlashPlayer uses (was using) it to display the content.