I’ve just released PDFObject 2.0. Read more on my blog:
I received a question from Bob (no, really), who wrote:
I have a question about the newest version of Flash and its HTML publishing option using CreateJS. What do you think of that approach going forward?
I started to write an email response but figured I should probably post it here.
I haven’t been paying much attention to Flash, so I don’t know what the ‘HTML export’ is capable of these days. In general, I’m very wary of converting Flash-based projects to HTML. When Adobe Captivate first released a “publish to HTML5” feature, all it did was convert the SWF animation to a video file, losing all interactivity along the way.
The limitations of the browsers and the HTML5 spec mean you can’t expect a fully 1:1 conversion from Flash to HTML, regardless of libraries like CreateJS. Some of the features found in Flash are still not quite supported in browsers, or might not work quite the way you’d expect. For example, CSS transitions, CSS gradients, and SVG/Canvas support vary widely from browser to browser (though it’s getting better, and there are workarounds aka “polyfills”). Streaming video, which is a breeze in Flash, is not part of the HTML5 Video spec (yet) and is unsupported in browsers. Video and audio codec support is inconsistent. In some cases, devices add new limitations — last time I checked, iOS devices wouldn’t autoplay audio or video in Safari. ‘Play’ couldn’t be scripted, it required the user to press a button.
If you continue to use Flash as an HTML development tool, temper expectations and test widely, as some things might not work the way you expect when converted to HTML.
And regardless of whether you publish to Flash or HTML, always test the accessibility of your project. Just because it’s HTML doesn’t mean it’s accessible; HTML by nature is more accessible than Flash, but libraries like CreateJS add a lot of complexity to the page, which can easily impact accessibility.
Back in 2011, I mentioned that Microsoft was about to halt development of the Silverlight plugin, that Flash mobile was being discontinued, and that Adobe recommended HTML5 for enterprise RIA development instead of Flex, which was being open-sourced. My post was a little long-winded, but the short version was: whoa, the times-are-a-changin’, it’s getting dangerous to rely on browser plugins.
Over the last year, the situation has evolved in an interesting way — browser support for plugins (especially Flash Player) has been considerably restricted by browser vendors due to repeated security vulnerabilities in Flash Player and Java.
Automatically disabling Flash Player
In May 2012, Apple’s Safari browser began automatically disabling outdated versions of Flash Player: “Out-of-date versions of Adobe Flash Player do not include the latest security updates and will be disabled to help keep your Mac secure.” If a webpage contains a SWF but the installed edition of Flash Player is deemed out of date, Safari will display a “blocked plugin” message and inform the user they need to download the latest edition of Flash Player at adobe.com. This change came with Adobe’s blessing.
In January 2013, Mozilla introduced a global “click to play” mechanism that disables ALL plugins in Firefox by default, except the latest edition of Flash Player: “Our plan is to enable Click to Play for all versions of all plugins except the current version of Flash.”
To Adobe’s credit, Flash Player updates are being released at a fast clip to address known security vulnerabilities. Unfortunately, this has a nasty side effect: you’re very likely to have an outdated edition of Flash Player when you try to view Flash content on a website. (By my unofficial count, there have been at least 13 updates over the past calendar year, averaging about once a month.)
At a recent job, I managed a small network of Macs in classrooms. The Macs were set up to use Adobe’s ‘automatic updates’ feature for Flash Player, but they never seemed to update fast enough — we received numerous complaints from classroom users who couldn’t view Flash content because Safari blocked it.
Internet Explorer’s on-again, off-again relationship with Flash Player
I previously mentioned that Microsoft’s Windows 8 ‘Metro’ mode disabled all plugins, including Flash Player; Microsoft said Internet Explorer in Windows 8 Metro mode “provides an add-on–free experience, so browser plugins don’t load and dependent content isn’t displayed“.
In May 2012 Microsoft changed their minds and enabled Flash in Metro mode. BUT… Microsoft will ship Flash Player as a component of IE 10 (much like Google Chrome does), and will restrict which sites are allowed to run Flash! “While any site can play Flash content in IE10 on the Windows desktop, only sites that are on the Compatibility View (CV) list can play Flash content within Metro style IE.”
In other words, if you don’t have Microsoft’s blessing, your Flash site will not work when viewed in Metro mode.
Update: @chris_sage pointed me to a post by Microsoft written just three days ago where they apparently changed their minds again — almost a year after saying they’d require a whitelist, they now say they support Flash Player by default in Metro mode without requiring sites to be whitelisted.
What it boils down to…
If you develop Flash-based content, it will be more and more of a challenge to provide a smooth, problem-free user experience. For e-learning developers, one of the original lures of Flash was the ubiquity of Flash Player; Flash made it easy to provide the same e-learning experience across browsers and platforms. Due to fragmentation in Flash support, this no longer appears possible.
- Adobe says: No Flash Player for mobile devices.
- Microsoft says:
No Flash Player on Surface tablets (or other Windows 8/RT tablets) unless the user switches to desktop mode OR gets on our whitelist for Metro mode.We love us some Flash! But we’ll manage the security updates ourselves, thank-you.
- Mozilla says: Only the latest edition of Flash Player for Firefox.
- Apple says: No Flash Player on Apple iOS devices, and only the latest edition of Flash Player for desktop Safari.
- Opera says: Flash Player on desktop editions of Opera? No problem. Flash Player in Opera Mobile? Don’t get mad at us, Adobe stopped providing Flash Player for mobile devices!
- Google says: We control Flash Player for Chrome (desktop) ourselves. No worries. Flash Player in Chrome on mobile devices? Don’t get mad at us, Adobe stopped providing Flash Player for mobile devices!
The browser vendors are enforcing their will. You don’t have to be a Flash-hater to see that building Flash-dependent sites is a minefield.
For those of you in e-learning who depend almost completely on Flash-based courseware, it’s a good idea to start looking for alternatives.
Now, I’m happy to report I’ve created a replacement for the RightClick.js utility, creatively named SWFRightClick. It uses the same approach to handling right-clicks, but does it with a completely new codebase and a few extra goodies. SWFRightClick is compatible with every edition of SWFObject, and is free to use (MIT license).
Check it out on GitHub. I plan to fold it in to my Captivate publishing templates very soon.
What a busy week.
Flash is dead. Sort of, but not really.
In case you haven’t heard, Adobe formally announced the discontinuation of Flash Player for mobile devices (“Flash to Focus on PC Browsing and Mobile Apps; Adobe to More Aggressively Contribute to HTML5“). Adobe employees struggled to come to grips with what has undoubtedly been a tough week for them — aside from the product news, they were also informed of massive layoffs (around Adobe 750 employees). Regardless of your feelings about Flash, your heart must go out to the families affected by a sudden job loss.
Flash critics were quick to declare Flash dead. But in the immortal words of Monty Python’s Eric Idle, “I’m not quite dead yet.”
Yes, Adobe is scaling back on Flash to focus more energy on so-called HTML5 technologies (“so-called” because many of the technologies involved are not actually part of the HTML5 spec.) However, their public announcement was that mobile Flash is dead, and Flash on the desktop will continue to thrive.
Flex is being abandoned
Then the “Official Flex Team Blog” dropped a bombshell: Adobe Flex is going open-source:
Yes. We know Flex provides a unique set of benefits for enterprise application developers. We also know that the technology landscape for application development is rapidly changing and our customers want more direct control over the underlying technologies they use. Given this, we are planning to contribute the Flex SDK to an open source foundation in the same way we contributed PhoneGap to the Apache Foundation when we acquired Nitobi.
Okay. Flex is being open-sourced. To be honest, this isn’t really shocking news to me since Flex has mingled with Eclipse for a long time and has had its toes in open source for ages. The part that made my jaw drop was in the next section:
Does Adobe recommend we use Flex or HTML5 for our enterprise application development?
In the long-term, we believe HTML5 will be the best technology for enterprise application development. We also know that, currently, Flex has clear benefits for large-scale client projects typically associated with desktop application profiles.
Given our experiences innovating on Flex, we are extremely well positioned to positively contribute to the advancement of HTML5 development, starting with mobile applications. In fact, many of the engineers and product managers who worked on Flex SDK will be moving to work on our HTML efforts. We will continue making significant contributions to open web technologies like WebKit & jQuery, advance the development of PhoneGap and create new tools that solve the challenges developers face when building applications with HTML5.
In the long-term, we believe HTML5 will be the best technology for enterprise application development. For those of you unfamiliar with Flex, it’s Adobe’s ‘enterprise-level’ Flash development path. Designers use Flash Professional and the timeline, while programmers use Flex and its pure ActionScript/MXML environment. This line is basically saying “see ya, Flex, was nice knowing you. We’re putting our best guys — the ones who weren’t laid off — on the ‘HTML5’ train.”
By extension, if Adobe is wiping its hands of Flex, it means they’re seriously scaling back support for the entire Flash ecosystem.
Whoa. The anti-Flash crowd really does have reason to celebrate. But not so quick, my friends: Support for the HTML5 environment is nowhere near Flash’s level of ubiquity, it will take a couple of years to get there, and even then, I doubt it will have the full capabilities Flash offers today.
But does it matter? Let me come back to that in a minute.
Silverlight is dead. Sort of, but not really
For now, lets turn our attention to our friends in Redmond, WA. While Adobe created this week’s loudest thunder, Microsoft made a few waves itself. If you recall, about a year ago one of Microsoft’s presidents (yes, they have more than one) caused a stir when he said “HTML is the only true cross platform solution for everything, including (Apple’s) iOS platform”. Microsoft quickly issued a statement backtracking from the implication that Silverlight was on its way out, and stressed their commitment to Silverlight.
A year later, the circus is back in town. According to some industry sources, Microsoft is planning to stop development of future editions of Silverlight; version 5 may be the last hurrah, except for security updates. Stop me if this sounds familiar.
However, this time around, the rumor sounds much more feasible because of Internet Explorer 10.
Microsoft’s Internet Explorer, that grand ol’ browser, is going through a major metamorphosis. In general, Internet Explorer 10 will behave less like its ancestors and more like Firefox and Webkit (Safari/Chrome). For example, IE 10 will not support Microsoft’s long-standing conditional comments. This is a big deal for web developers, as conditional comments have become a major crutch when dealing with Internet Explorer. But the biggest news I’ve heard about IE 10 thus far is that it will not support plugins — Flash, Silverlight, Quicktime, etc. — when running in “Metro” mode. Microsoft’s Windows 8 team believes that removing plugins from IE will result in improvements across-the-board: security, reliability, privacy, battery life in mobile devices, etc.
For the web to move forward and for consumers to get the most out of touch-first browsing, the Metro style browser in Windows 8 is as HTML5-only as possible, and plug-in free. The experience that plug-ins provide today is not a good match with Metro style browsing and the modern HTML5 web.
Running Metro style IE plug-in free improves battery life as well as security, reliability, and privacy for consumers. Plug-ins were important early on in the web’s history. But the web has come a long way since then with HTML5. Providing compatibility with legacy plug-in technologies would detract from, rather than improve, the consumer experience of browsing in the Metro style UI.
Plugins will still be supported in the non-Metro environment, but it appears Microsoft’s way of the future is Metro, and Metro is HTML5-based, with no plugins allowed, just like Apple iOS. Microsoft is clearly serious about leaving plugins behind, including its own Silverlight Player.
Flash and Silverlight are not dead, but are being minimized by their owners. If you read the articles closely, you’ll see a pattern: both Adobe and Microsoft hope to port some of the technology from their plugins to the open web, aka the “HTML5 ecosystem”.
As it currently stands, browser technology and HTML5 ubiquity will take a number of years to catch up to the baseline capabilities of Flash and Silverlight. Even then, I doubt browsers will have some of the advanced capabilities Flash offers today.
The thing is, I don’t think most Flash developers take full advantage of Flash’s capabilities; they seem to use the same basics they’ve been using for years. The cutting-edge stuff is nowhere near as common as the mundane: video players, slideshows, and simple games.
The vast majority of Flash usage appears to be for serving streaming video. HTML5’s video support is not quite ready to replace Flash in this regard, but it’s getting pretty close. The codec wars are the biggest stumbling block, followed by support for DRM and perhaps a handful of advanced features. If you have a simple video that doesn’t need DRM and can be served via two codecs (H264 and OGG or WebM), you can proceed directly to Go, collect $200.
Flash-based gaming is another strong user base. My kids have been using NeoPets and similar sites for years, so I understand just how far and deep Flash gaming goes in our community. But some of these games are deceptively simple with their graphics, and I wouldn’t be surprised if Adobe’s HTML5 tools soon enable Flash game developers to port their games to the HTML5 ecosystem.
If you’re reading this blog, chances are good that you’re an e-learning developer. You probably also know that most major e-learning rapid development software outputs Flash SWFs. I can’t think of any industry aside from online gaming that is so utterly dependent on Flash at the moment. This has worried me for years — I’ve long preached that e-learning developers should be less reliant on Flash.
When Apple’s iPad was released without Flash support, the outcry from the e-learning industry was fierce. I also feel it was misplaced — it clearly showed the industry’s reliance on a plugin, and rather than focus on removing the Flash requirement barrier, many people chose to plant their feet in the ground and buy non-Apple devices as a form of protest. Some vendors, to their credit, modified their products (Raptivity, Lectora, Rapid Intake, etc.) to take steps away from plugin requirements and towards modern HTML5 experiences. (I admit I haven’t tried the HTML5 editions of these products yet, so I can’t speak to their quality.)
Don’t get me wrong, I’m not anti-Flash — anyone who follows this blog knows that I work with ActionScript and am a member of the SWFObject project team — I just think browsers plugins should be used sparingly, with decent fallbacks in place for people who don’t have Flash, such as video transcripts for people who can’t see the video.
Hopefully this week’s news about Adobe and Microsoft shifting gears away from plugins will help the more hard-headed among us in the e-learning industry to take a more active role in moving away from Flash and towards a true native web experience.
The pipwerks CaptivateController now includes a
By popular demand, I've updated my CaptivateController to work with Adobe Captivate 5 (CP5). Since this is an open-source project, there's no upgrade fee. (What? "Adobe" and "no upgrade fee" in the same paragraph?!) I kid, I kid... I'm a kidder.
Setty's line "Smart people want to give their best" seems to be something of a passing thought in his post. I'd like to give it more attention, because I believe conscientious experienced folks have a fear of giving bad advice.
I'm always surprised how little people talk about cheating in e-learning; maybe it's a fear of revealing just how easy it can be. The fact is, SCORM -- the most common communication standard in e-learning -- is fairly easy to hack. I've whipped up a proof-of-concept bookmarklet that when clicked will set your SCORM course to complete with a score of 100 (works with both SCORM 1.2 and 2004).